mirror of
https://github.com/eddyem/STM8_samples.git
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Added software I2C on timer TIM2
This commit is contained in:
eddyem
parent
4345cedd6e
commit
99a2c601cc
34
si7005_softi2c/Makefile
Normal file
34
si7005_softi2c/Makefile
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@ -0,0 +1,34 @@
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NAME=si7005
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SDCC=sdcc
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CCFLAGS=-DSTM8S105 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx
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LDFLAGS= -mstm8 --out-fmt-ihx -lstm8
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FLASHFLAGS=-cstlinkv2 -pstm8s105
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SRC=$(wildcard *.c)
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OBJ=$(SRC:%.c=%.rel)
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TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
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TRASH+=$(SRC:%.c=%.sym) $(NAME).lk $(NAME).map
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INDEPENDENT_HEADERS=../stm8l.h ports_definition.h Makefile
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all: $(NAME).ihx
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#$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
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# @touch $@
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#
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#%.h: ;
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clean:
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rm -f $(TRASH)
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load: $(NAME).ihx
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stm8flash $(FLASHFLAGS) -w $(NAME).ihx
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%.rel: %.c
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$(SDCC) $(CCFLAGS) -c $<
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$(NAME).ihx: $(OBJ)
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$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
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.PHONY: all
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BIN
si7005_softi2c/client
Executable file
BIN
si7005_softi2c/client
Executable file
Binary file not shown.
194
si7005_softi2c/interrupts.c
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194
si7005_softi2c/interrupts.c
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@ -0,0 +1,194 @@
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/*
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* interrupts.c
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*
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* Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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||||
*
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||||
* You should have received a copy of the GNU General Public License
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||||
* along with this program; if not, write to the Free Software
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||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "ports_definition.h"
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#include "uart.h"
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// Top Level Interrupt
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INTERRUPT_HANDLER(TLI_IRQHandler, 0){}
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// Auto Wake Up Interrupt
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INTERRUPT_HANDLER(AWU_IRQHandler, 1){}
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// Clock Controller Interrupt
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INTERRUPT_HANDLER(CLK_IRQHandler, 2){}
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// External Interrupt PORTA
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INTERRUPT_HANDLER(EXTI_PORTA_IRQHandler, 3){}
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// External Interrupt PORTB
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INTERRUPT_HANDLER(EXTI_PORTB_IRQHandler, 4){}
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// External Interrupt PORTC
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INTERRUPT_HANDLER(EXTI_PORTC_IRQHandler, 5){
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}
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// External Interrupt PORTD
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INTERRUPT_HANDLER(EXTI_PORTD_IRQHandler, 6){
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}
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// External Interrupt PORTE
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INTERRUPT_HANDLER(EXTI_PORTE_IRQHandler, 7){}
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#ifdef STM8S903
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// External Interrupt PORTF
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INTERRUPT_HANDLER(EXTI_PORTF_IRQHandler, 8){}
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#endif // STM8S903
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#if defined (STM8S208) || defined (STM8AF52Ax)
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// CAN RX Interrupt routine.
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INTERRUPT_HANDLER(CAN_RX_IRQHandler, 8){}
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// CAN TX Interrupt routine.
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INTERRUPT_HANDLER(CAN_TX_IRQHandler, 9){}
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#endif // STM8S208 || STM8AF52Ax
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// SPI Interrupt routine.
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INTERRUPT_HANDLER(SPI_IRQHandler, 10){}
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// Timer1 Update/Overflow/Trigger/Break Interrupt
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INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11){
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}
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// Timer1 Capture/Compare Interrupt routine.
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INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12){}
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#ifdef STM8S903
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// Timer5 Update/Overflow/Break/Trigger Interrupt
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INTERRUPT_HANDLER(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13){}
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// Timer5 Capture/Compare Interrupt
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INTERRUPT_HANDLER(TIM5_CAP_COM_IRQHandler, 14){}
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#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
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// Timer2 Update/Overflow/Break Interrupt
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INTERRUPT_HANDLER(TIM2_UPD_OVF_BRK_IRQHandler, 13){
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}
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// Timer2 Capture/Compare Interrupt
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// manage with sending/receiving
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INTERRUPT_HANDLER(TIM2_CAP_COM_IRQHandler, 14){
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/* TIM2_SR1 &= ~TIM_SR1_CC1IF;
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onewire_gotlen = TIM2_CCR1H << 8;
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onewire_gotlen |= TIM2_CCR1L;
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if(onewire_tick_ctr){ // there's some more data to transmit / receive
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--onewire_tick_ctr;
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if(is_receiver){// receive bits
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ow_data >>= 1;
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if(onewire_gotlen < ONE_ZERO_BARRIER){ // this is 1
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ow_data |= 0x80; // LSbit first!
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}
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// in receiver mode we don't need to send byte after ctr is zero!
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if(onewire_tick_ctr == 0){
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TIM2_CR1 &= ~TIM_CR1_CEN;
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}
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}else{// transmit bits
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// update CCR2 registers with new values
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if(ow_data & 1){ // transmit 1
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TIM2REG(CCR2, BIT_ONE_P);
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}else{ // transmit 0
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TIM2REG(CCR2, BIT_ZERO_P);
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}
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ow_data >>= 1;
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}
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}else{ // end: turn off timer
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TIM2_CR1 &= ~TIM_CR1_CEN;
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}*/
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}
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#endif // STM8S903
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#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
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defined(STM8S005) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
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// Timer3 Update/Overflow/Break Interrupt
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INTERRUPT_HANDLER(TIM3_UPD_OVF_BRK_IRQHandler, 15){}
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// Timer3 Capture/Compare Interrupt
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INTERRUPT_HANDLER(TIM3_CAP_COM_IRQHandler, 16){}
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#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
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#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
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defined(STM8S003) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
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// UART1 TX Interrupt
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INTERRUPT_HANDLER(UART1_TX_IRQHandler, 17){}
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// UART1 RX Interrupt
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INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18){}
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#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
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/*
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// I2C Interrupt
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INTERRUPT_HANDLER(I2C_IRQHandler, 19){}
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*/
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#if defined(STM8S105) || defined(STM8S005) || defined (STM8AF626x)
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// UART2 TX interrupt
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INTERRUPT_HANDLER(UART2_TX_IRQHandler, 20){}
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// UART2 RX interrupt
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INTERRUPT_HANDLER(UART2_RX_IRQHandler, 21){
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U8 rb;
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if(UART2_SR & UART_SR_RXNE){ // data received
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rb = UART2_DR; // read received byte & clear RXNE flag
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while(!(UART2_SR & UART_SR_TXE));
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UART2_DR = rb; // echo received symbol
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UART_rx[UART_rx_cur_i++] = rb; // put received byte into cycled buffer
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if(UART_rx_cur_i == UART_rx_start_i){ // Oops: buffer overflow! Just forget old data
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UART_rx_start_i++;
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check_UART_pointer(UART_rx_start_i);
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}
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check_UART_pointer(UART_rx_cur_i);
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}
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}
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#endif // STM8S105 or STM8AF626x
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#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
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// UART3 TX interrupt
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INTERRUPT_HANDLER(UART3_TX_IRQHandler, 20){}
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// UART3 RX interrupt
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INTERRUPT_HANDLER(UART3_RX_IRQHandler, 21){}
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#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
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#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
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// ADC2 interrupt
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INTERRUPT_HANDLER(ADC2_IRQHandler, 22){}
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#else
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// ADC1 interrupt
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INTERRUPT_HANDLER(ADC1_IRQHandler, 22){
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}
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#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
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#ifdef STM8S903
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// Timer6 Update/Overflow/Trigger Interrupt
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INTERRUPT_HANDLER(TIM6_UPD_OVF_TRG_IRQHandler, 23){}
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#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
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// Timer4 Update/Overflow Interrupt
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INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23){
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if(TIM4_SR & TIM_SR1_UIF){ // update interrupt
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Global_time++; // increase timer
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}
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TIM4_SR = 0; // clear all interrupt flags
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}
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#endif // STM8S903
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// Eeprom EEC Interrupt
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INTERRUPT_HANDLER(EEPROM_EEC_IRQHandler, 24){}
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144
si7005_softi2c/interrupts.h
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144
si7005_softi2c/interrupts.h
Normal file
@ -0,0 +1,144 @@
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/*
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* interrupts.h
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*
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* Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
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||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
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||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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||||
* MA 02110-1301, USA.
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*/
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#pragma once
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#ifndef __INTERRUPTS_H__
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#define __INTERRUPTS_H__
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#include "stm8l.h"
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// Top Level Interrupt
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INTERRUPT_DEFINITION(TLI_IRQHandler, 0);
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// Auto Wake Up Interrupt
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INTERRUPT_DEFINITION(AWU_IRQHandler, 1);
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// Clock Controller Interrupt
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INTERRUPT_DEFINITION(CLK_IRQHandler, 2);
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// External Interrupt PORTA
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INTERRUPT_DEFINITION(EXTI_PORTA_IRQHandler, 3);
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// External Interrupt PORTB
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INTERRUPT_DEFINITION(EXTI_PORTB_IRQHandler, 4);
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// External Interrupt PORTC
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INTERRUPT_DEFINITION(EXTI_PORTC_IRQHandler, 5);
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// External Interrupt PORTD
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INTERRUPT_DEFINITION(EXTI_PORTD_IRQHandler, 6);
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// External Interrupt PORTE
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INTERRUPT_DEFINITION(EXTI_PORTE_IRQHandler, 7);
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#ifdef STM8S903
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// External Interrupt PORTF
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INTERRUPT_DEFINITION(EXTI_PORTF_IRQHandler, 8);
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#endif // STM8S903
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#if defined (STM8S208) || defined (STM8AF52Ax)
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// CAN RX Interrupt routine.
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INTERRUPT_DEFINITION(CAN_RX_IRQHandler, 8);
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// CAN TX Interrupt routine.
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INTERRUPT_DEFINITION(CAN_TX_IRQHandler, 9);
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#endif // STM8S208 || STM8AF52Ax
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// SPI Interrupt routine.
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INTERRUPT_DEFINITION(SPI_IRQHandler, 10);
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// Timer1 Update/Overflow/Trigger/Break Interrupt
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INTERRUPT_DEFINITION(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11);
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// Timer1 Capture/Compare Interrupt routine.
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INTERRUPT_DEFINITION(TIM1_CAP_COM_IRQHandler, 12);
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#ifdef STM8S903
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// Timer5 Update/Overflow/Break/Trigger Interrupt
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INTERRUPT_DEFINITION(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13);
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// Timer5 Capture/Compare Interrupt
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INTERRUPT_DEFINITION(TIM5_CAP_COM_IRQHandler, 14);
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#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
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// Timer2 Update/Overflow/Break Interrupt
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INTERRUPT_DEFINITION(TIM2_UPD_OVF_BRK_IRQHandler, 13);
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// Timer2 Capture/Compare Interrupt
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INTERRUPT_DEFINITION(TIM2_CAP_COM_IRQHandler, 14);
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#endif // STM8S903
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#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
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defined(STM8S005) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
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// Timer3 Update/Overflow/Break Interrupt
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INTERRUPT_DEFINITION(TIM3_UPD_OVF_BRK_IRQHandler, 15);
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// Timer3 Capture/Compare Interrupt
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INTERRUPT_DEFINITION(TIM3_CAP_COM_IRQHandler, 16);
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#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
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#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
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defined(STM8S003) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
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// UART1 TX Interrupt
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INTERRUPT_DEFINITION(UART1_TX_IRQHandler, 17);
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// UART1 RX Interrupt
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INTERRUPT_DEFINITION(UART1_RX_IRQHandler, 18);
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#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
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// I2C Interrupt
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INTERRUPT_DEFINITION(I2C_IRQHandler, 19);
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#if defined(STM8S105) || defined(STM8S005) || defined (STM8AF626x)
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// UART2 TX interrupt
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INTERRUPT_DEFINITION(UART2_TX_IRQHandler, 20);
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// UART2 RX interrupt
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INTERRUPT_DEFINITION(UART2_RX_IRQHandler, 21);
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#endif // STM8S105 or STM8AF626x
|
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|
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#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
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// UART3 TX interrupt
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INTERRUPT_DEFINITION(UART3_TX_IRQHandler, 20);
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// UART3 RX interrupt
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INTERRUPT_DEFINITION(UART3_RX_IRQHandler, 21);
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#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
|
||||
|
||||
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
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// ADC2 interrupt
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INTERRUPT_DEFINITION(ADC2_IRQHandler, 22);
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#else // STM8S105, STM8S103 or STM8S903 or STM8AF626x
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// ADC1 interrupt
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INTERRUPT_DEFINITION(ADC1_IRQHandler, 22);
|
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#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
|
||||
|
||||
#ifdef STM8S903
|
||||
// Timer6 Update/Overflow/Trigger Interrupt
|
||||
INTERRUPT_DEFINITION(TIM6_UPD_OVF_TRG_IRQHandler, 23);
|
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#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
|
||||
// Timer4 Update/Overflow Interrupt
|
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INTERRUPT_DEFINITION(TIM4_UPD_OVF_IRQHandler, 23);
|
||||
#endif // STM8S903
|
||||
|
||||
// Eeprom EEC Interrupt
|
||||
INTERRUPT_DEFINITION(EEPROM_EEC_IRQHandler, 24);
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||||
|
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#endif // __INTERRUPTS_H__
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100
si7005_softi2c/main.c
Normal file
100
si7005_softi2c/main.c
Normal file
@ -0,0 +1,100 @@
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/*
|
||||
* blinky.c
|
||||
*
|
||||
* Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
#include "ports_definition.h"
|
||||
#include "interrupts.h"
|
||||
#include "uart.h"
|
||||
#include "si7005.h"
|
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|
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volatile unsigned long Global_time = 0L; // global time in ms
|
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U16 paused_val = 500; // interval between LED flashing
|
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int main() {
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unsigned long T = 0L, siT = 0L;
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U8 rb;
|
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CFG_GCR |= 1; // disable SWIM
|
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// Configure clocking
|
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CLK_CKDIVR = 0; // F_HSI = 16MHz, f_CPU = 16MHz
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// Timer 4 (8 bit) used as system tick timer
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// prescaler == 128 (2^7), Tfreq = 125kHz
|
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// period = 1ms, so ARR = 125
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TIM4_PSCR = 7;
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TIM4_ARR = 125;
|
||||
// interrupts: update
|
||||
TIM4_IER = TIM_IER_UIE;
|
||||
// auto-reload + interrupt on overflow + enable
|
||||
TIM4_CR1 = TIM_CR1_APRE | TIM_CR1_URS | TIM_CR1_CEN;
|
||||
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||||
// PC2 - PP output (on-board LED)
|
||||
PORT(LED_PORT, DDR) |= LED_PIN;
|
||||
PORT(LED_PORT, CR1) |= LED_PIN;
|
||||
|
||||
uart_init();
|
||||
|
||||
si7005_setup();
|
||||
|
||||
// enable all interrupts
|
||||
enableInterrupts();
|
||||
|
||||
// Loop
|
||||
do{
|
||||
if((Global_time - T > paused_val) || (T > Global_time)){
|
||||
T = Global_time;
|
||||
PORT(LED_PORT, ODR) ^= LED_PIN; // blink on-board LED
|
||||
}
|
||||
if(UART_read_byte(&rb)){ // buffer isn't empty
|
||||
switch(rb){
|
||||
case 'h': // help
|
||||
uart_write("\nPROTO:\n+/-\tLED period\n"
|
||||
"I\tread Si7005 device id\n"
|
||||
"T\tread themperature\n"
|
||||
"H\tread humidity\n"
|
||||
//"O\tread OPT"
|
||||
);
|
||||
break;
|
||||
case '+':
|
||||
paused_val += 100;
|
||||
if(paused_val > 10000)
|
||||
paused_val = 500; // but not more than 10s
|
||||
break;
|
||||
case '-':
|
||||
paused_val -= 100;
|
||||
if(paused_val < 500) // but not less than 0.5s
|
||||
paused_val = 500;
|
||||
break;
|
||||
case 'I':
|
||||
si7005_read_ID();
|
||||
break;
|
||||
case 'T':
|
||||
si7005_read_T();
|
||||
break;
|
||||
case 'H':
|
||||
si7005_read_H();
|
||||
break;
|
||||
}
|
||||
}
|
||||
if(Global_time != siT){
|
||||
siT = Global_time;
|
||||
si7005_process();
|
||||
}
|
||||
}while(1);
|
||||
}
|
||||
|
||||
|
||||
46
si7005_softi2c/ports_definition.h
Normal file
46
si7005_softi2c/ports_definition.h
Normal file
@ -0,0 +1,46 @@
|
||||
/*
|
||||
* ports_definition.h - definition of ports pins & so on
|
||||
*
|
||||
* Copyright 2014 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
#ifndef __PORTS_DEFINITION_H__
|
||||
#define __PORTS_DEFINITION_H__
|
||||
|
||||
#include "stm8l.h"
|
||||
|
||||
// macro for using in port constructions like PORT(LED_PORT, ODR) = xx
|
||||
#define CONCAT(a, b) a ## _ ## b
|
||||
#define PORT(a, b) CONCAT(a , b)
|
||||
|
||||
// on-board LED
|
||||
#define LED_PORT PC
|
||||
#define LED_PIN GPIO_PIN2
|
||||
|
||||
// UART2_TX
|
||||
#define UART_PORT PD
|
||||
#define UART_TX_PIN GPIO_PIN5
|
||||
|
||||
//soft I2C
|
||||
#define I2C_SDA_PORT PB
|
||||
#define I2C_SDA_PIN GPIO_PIN4
|
||||
#define I2C_SCL_PORT PB
|
||||
#define I2C_SCL_PIN GPIO_PIN5
|
||||
|
||||
#endif // __PORTS_DEFINITION_H__
|
||||
152
si7005_softi2c/si7005.c
Normal file
152
si7005_softi2c/si7005.c
Normal file
@ -0,0 +1,152 @@
|
||||
/*
|
||||
* si7005.c
|
||||
*
|
||||
* Copyright 2015 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#include "soft_i2c.h"
|
||||
#include "uart.h"
|
||||
#include "si7005.h"
|
||||
|
||||
#define DEVID (0x40)
|
||||
|
||||
typedef enum{
|
||||
RELAX = 0,
|
||||
WAITFORT,
|
||||
WAITFORP
|
||||
}si7005_state;
|
||||
|
||||
static si7005_state state = RELAX;
|
||||
|
||||
void si7005_setup(){
|
||||
i2c_setup();
|
||||
i2c_set_addr7(DEVID);
|
||||
}
|
||||
|
||||
/*
|
||||
* read device ID
|
||||
*/
|
||||
void si7005_read_ID(){
|
||||
U8 ID;
|
||||
i2c_status st = I2C_OK;
|
||||
if(state != RELAX){
|
||||
error_msg("measurements are in process");
|
||||
return;
|
||||
}
|
||||
if((st = i2c_7bit_send_onebyte(0x11, 0)) == I2C_OK){
|
||||
if((st = i2c_7bit_receive_onebyte(&ID,0)) == I2C_OK){
|
||||
uart_write("got ID: ");
|
||||
printUHEX(ID);
|
||||
UART_send_byte('\n');
|
||||
}
|
||||
}
|
||||
if(st != I2C_OK){
|
||||
uart_write("can't read ID, errcode: ");
|
||||
printUHEX(st); UART_send_byte('\n');
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* start themperature reading
|
||||
*/
|
||||
void si7005_read_T(){
|
||||
const U8 cmd[2] = {0x03, 0x11};
|
||||
i2c_status st = I2C_OK;
|
||||
if(state != RELAX){
|
||||
error_msg("measurements are in process");
|
||||
return;
|
||||
}
|
||||
st = i2c_7bit_send(cmd, 2, 1);
|
||||
if(st != I2C_OK){
|
||||
error_msg("can't send read sequence, err: ");
|
||||
printUHEX(st);UART_send_byte('\n');
|
||||
return;
|
||||
}
|
||||
state = WAITFORT;
|
||||
}
|
||||
|
||||
/*
|
||||
* start pressure reading
|
||||
*/
|
||||
void si7005_read_P(){
|
||||
const U8 cmd[2] = {0x03, 0x01};
|
||||
i2c_status st = I2C_OK;
|
||||
if(state != RELAX){
|
||||
error_msg("measurements are in process");
|
||||
return;
|
||||
}
|
||||
st = i2c_7bit_send(cmd, 2, 1);
|
||||
if(st != I2C_OK){
|
||||
error_msg("can't send read sequence, err: ");
|
||||
printUHEX(st);UART_send_byte('\n');
|
||||
return;
|
||||
}
|
||||
state = WAITFORP;
|
||||
}
|
||||
|
||||
/*
|
||||
* display readed value in tenths
|
||||
*/
|
||||
static void display_data(U8 *d){
|
||||
U16 udata = *((int *)d);
|
||||
long idata = 0L;
|
||||
switch (state){
|
||||
case WAITFORP: // display pressure
|
||||
udata >>=4; // get 12 bit data
|
||||
idata = (udata*10L)/16L - 240L;
|
||||
uart_write("P*10=");
|
||||
break;
|
||||
case WAITFORT: // display themperature
|
||||
udata >>=2; // get 14 bit data
|
||||
idata = (udata*100L)/32L - 5000L;
|
||||
uart_write("T*100=");
|
||||
break;
|
||||
default:
|
||||
return;
|
||||
}
|
||||
print_long(idata);
|
||||
UART_send_byte('\n');
|
||||
}
|
||||
|
||||
/*
|
||||
* process state machine
|
||||
*/
|
||||
void si7005_process(){
|
||||
U8 T[2], b;
|
||||
i2c_status st;
|
||||
if(state == RELAX) return;
|
||||
if(state == WAITFORP || state == WAITFORT){ // poll RDY
|
||||
if((st = i2c_7bit_send_onebyte(0, 0)) == I2C_OK){
|
||||
if(i2c_7bit_receive_onebyte(&b,0) == I2C_OK){
|
||||
if(b) return; // !RDY
|
||||
if((st = i2c_7bit_send_onebyte(1, 0)) == I2C_OK)
|
||||
if((st = i2c_7bit_receive_twobyte(T,0)) == I2C_OK)
|
||||
display_data(T);
|
||||
state = RELAX;
|
||||
if(st){
|
||||
uart_write("can't read value, err: ");
|
||||
printUHEX(st); UART_send_byte('\n');
|
||||
}
|
||||
}
|
||||
}else{
|
||||
error_msg("can't poll !RDY, err: ");
|
||||
printUHEX(st); UART_send_byte('\n');
|
||||
state = RELAX;
|
||||
}
|
||||
}
|
||||
}
|
||||
32
si7005_softi2c/si7005.h
Normal file
32
si7005_softi2c/si7005.h
Normal file
@ -0,0 +1,32 @@
|
||||
/*
|
||||
* si7005.h
|
||||
*
|
||||
* Copyright 2015 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
#ifndef __SI7005_H__
|
||||
#define __SI7005_H__
|
||||
|
||||
void si7005_setup();
|
||||
void si7005_read_ID();
|
||||
void si7005_read_T();
|
||||
void si7005_read_P();
|
||||
void si7005_process();
|
||||
|
||||
#endif // __SI7005_H__
|
||||
151
si7005_softi2c/si7005.ihx
Normal file
151
si7005_softi2c/si7005.ihx
Normal file
@ -0,0 +1,151 @@
|
||||
:2080A000808080808080808080808080808080805204AE5240F66B047B04A5202750AE520A
|
||||
:2080C00041F66B017B04A4804D27FDAE52417B01F7AE00011F02C6000A97C6000A4CC7001B
|
||||
:2080E0000A4F9572FB027B01F7C60009C1000A2612C600094CC70009C60009A108260472DF
|
||||
:208100005F0009C6000AA1082604725F000A5B048080AE5342F644241B90CE000E72A900D7
|
||||
:1A81200001C6000DA90097C6000CA9009590CF000ECF000CAE53427F808017
|
||||
:20813A00AE5240F64824F9AE52417B03F781160390F64D271BAE5240F64824F9AE5245F64F
|
||||
:20815A00AA08AE5245F790F6905CAE5241F720E0815202C6000AC1000926034F2027160524
|
||||
:20817A00AE00011F01C6000997C600094CC700094F9572FB01F690F7C60009A108260472E2
|
||||
:20819A005F0009A6015B0281521C5F1F101F0E7B21A1042303CC82787B21A1032603CC82CB
|
||||
:2081BA00780D212603CC8278965C1F1B4F5F9772FB1B7F4CA10C25F51E1B1C000AA60AF77F
|
||||
:2081DA007B21A101270E7B21A102271C7B21A104272120301E1FF66B1A5F0F171F0F7B1AB7
|
||||
:2081FA006B117B176B0E201C161F90FE5F17101F0E20111E1FE6036B16E602FE6B101F0EC6
|
||||
:20821A007B166B11A6096B0D4B0A5F894B001E14891E1489CD8E905B089F887B0E6B138412
|
||||
:20823A000A0D5F417B124172FB1BAB30F74B0A5F894B001E14891E1489CD8FC15B081F1098
|
||||
:20825A00170E1E1026041E0E27067B0DA1FF2CB87B0D4C5F9772FB1B89CD81485B025B1CDD
|
||||
:20827A008152110F0E965C1F101E101C000B7F1E16A300007B15A2007B14A2002E14161646
|
||||
:20829A0090504F1215974F12149517161F14A6016B0EA60B6B0D4B0A5F894B001E1A891EBD
|
||||
:2082BA001A89CD8DEB5B089F0A0D5F417B0D4172FB10AB30F74B0A5F894B001E1A891E1A6A
|
||||
:2082DA0089CD8F0D5B081F1617147B0DA1002C034F2002A6011E1626041E1427034D26B67C
|
||||
:2082FA00887B0E6B10844D27140D0E27100A0D7B0D6B0F5F7B0F9772FB10A62DF75F7B0FB1
|
||||
:20831A009772FB1089CD81485B025B1181521ACE000E1F0DCE000C1F0B5F1F091F070F048E
|
||||
:20833A000F020F01961C000389CD816B5B024D2603CC83CB7B03A12D260E1E09260A1E0722
|
||||
:20835A002606A6016B0420697B03A1302403CC83ED7B03A1392303CC83EDA6016B021E0991
|
||||
:20837A00891E09894B0A5F894B00CD90605B081F11170F7B030F195F90977B19909572F95C
|
||||
:20839A00119F1910979E190F9572A200309FA2006B149EA20017096B077B146B08AE7FFFF4
|
||||
:2083BA0013094F12084F120724075F1F091F070F0190CE000E72F20DC6000D120C95C600A5
|
||||
:2083DA000C120B9790A327109EA2009FA2002403CC833E0D0126040D0226034F201A7B09A7
|
||||
:2083FA00887B0B6B07846B050D0427051E05501F051E1D1605FFA6015B1A81AE849889CD09
|
||||
:20841A0081485B021E0389CD81485B024B0ACD813A84817B03A40F6B037B03887B04A10ACE
|
||||
:20843A00842406AB306B032004AB576B037B0381AE84A189CD81485B027B034EA40F88CD75
|
||||
:20845A00842D5B0188CD813A847B0388CD842D5B0188CD813A8481AE5011F6AA20AE50118E
|
||||
:20847A00F7AE5012F6AA20AE5012F7AE5242A611F7AE5243A606F7AE5245A62CF7810A4560
|
||||
:0A849A0052524F523A200030780091
|
||||
:0291C5000000A8
|
||||
:2084A400CD89224B40CD896984815202725D000B270BAE870089CD84155B02204D4B004B0D
|
||||
:2084C40011CD8C805B026B024D2625965C4B0089CD8D415B036B024D2616AE871C89CD816F
|
||||
:2084E400485B027B0188CD844A844B0ACD813A840D022716AE872589CD81485B027B028828
|
||||
:20850400CD844A844B0ACD813A845B02815202965CA603F79093905CA61190F7725D000BEC
|
||||
:20852400270BAE870089CD84155B0220294B014B0289CD8CDB5B044D2718AE873E8889CDA9
|
||||
:2085440084155B028488CD844A844B0ACD813A8420043501000B5B02815202965CA603F76C
|
||||
:208564009093905CA60190F7725D000B270BAE870089CD84155B0220294B014B0289CD8C69
|
||||
:20858400DB5B044D2718AE873E8889CD84155B028488CD844A844B0ACD813A8420043502E3
|
||||
:2085A400000B5B028152081E0BFEC6000BA101274DC6000BA1022703CC8655A61062905F1A
|
||||
:2085C4008990894B0A5F894B00CD90605B084B104B004B004B00899089CD8F0D5B085172E0
|
||||
:2085E400A200F09FA2006B029EA20017076B057B026B06AE875E89CD81485B022042545462
|
||||
:20860400905F8990894B645F894B00CD90605B084B204B004B004B00899089CD8F0D5B0809
|
||||
:208624005172A213889FA2006B029EA20017076B057B026B06AE876489CD81485B02200097
|
||||
:208644001E07891E0789CD827B5B044B0ACD813A845B08815205725D000B2603CC86FDC6DD
|
||||
:20866400000BA102270AC6000BA1012703CC86FD4B004B00CD8C805B026B054D2661961C69
|
||||
:2086840000044B0089CD8D415B034D2703CC86FD0D042703CC86FD4B004B01CD8C805B02E8
|
||||
:2086A4006B034D261A965C9093894B009089CD8D905B03856B034D260689CD85A95B0272B2
|
||||
:2086C4005F000B0D032732AE876B89CD81485B027B0388CD844A844B0ACD813A84201AAE39
|
||||
:2086E400878389CD84155B027B0588CD844A844B0ACD813A84725F000B5B05816D65617335
|
||||
:208704007572656D656E74732061726520696E2070726F6365737300676F742049443A2023
|
||||
:208724000063616E277420726561642049442C20657272636F64653A200063616E27742088
|
||||
:2087440073656E6420726561642073657175656E63652C206572723A2000482A31303D0037
|
||||
:20876400542A3130303D0063616E277420726561642076616C75652C206572723A20006391
|
||||
:16878400616E277420706F6C6C20215244592C206572723A20007F
|
||||
:0191C70000A7
|
||||
:208000008200808382000000820080A0820080A1820080A2820080A3820080A4820080A57E
|
||||
:20802000820080A6820080A78200000082000000820080A8820080A9820080AA820080AB3D
|
||||
:20804000820080AC820080AD820080AE820000008200000082008DEA820080AF820080B0B3
|
||||
:20806000820081118200811282008139820000008200000082000000820000008200000011
|
||||
:1D808300AE00082707724F00005A26F9AE000B2709D691C4D700085A26F7CC80808C
|
||||
:03808000CC879A10
|
||||
:20879A00520D5F1F081F065F1F041F02AE7F60F6AA01AE7F60F7AE50C67FAE5345A607F733
|
||||
:2087BA00AE5346A67DF7AE5341A601F7AE5340A685F7AE500CF6AA04AE500CF7AE500DF64B
|
||||
:2087DA00AA04AE500DF7CD8471CD84A49ACE000E72F0081F0CC6000D12076B0BC6000C12C7
|
||||
:2087FA0006CE0010905F88130D909F120C909E12015B012511CE000E1308C6000D1207C61B
|
||||
:20881A00000C12062414CE000E1F08CE000C1F06AE500AF6A804AE500AF7965C89CD816B03
|
||||
:20883A005B024D2603CC88AA7B01A12B271FA12D2736A1482757A1492749A154274AA16864
|
||||
:20885A00264EAE88CE89CD81485B022043CE00101C0064CF0010CE0010A32710233235F434
|
||||
:20887A000011350100102028CE00101D0064CF0010CE0010A301F4241735F40011350100E0
|
||||
:20889A0010200DCD84AE2008CD85112003CD855D1E04C3000E260A1E02C3000C2603CC8797
|
||||
:2088BA00E7CE000E1F04CE000C1F02CD8658CC87E75B0D810A50524F544F3A0A2B2F2D097D
|
||||
:2088DA004C454420706572696F640A490972656164205369373030352064657669636520B6
|
||||
:2088FA0069640A540972656164207468656D70657261747572650A48097265616420687564
|
||||
:08891A006D69646974790A00BB
|
||||
:0691C8000000000001F4AC
|
||||
:20892200AE5005F6AA20AE5005F7AE5005F6AA10AE5005F7AE5007F6AA20AE5007F7AE500C
|
||||
:2089420007F6AA10AE5007F7AE5009F6AA20AE5009F7AE5009F6AA10AE5009F7AE530C7F5C
|
||||
:20896200AE5300A608F7817B0348C70013C60013AA01C7001281AE5005F6AA10AE5005F7A3
|
||||
:20898200AE530D7FAE530EA61EF7AE5300F6AA01AE5300F7AE5302F6A0014F494425F5AEA6
|
||||
:2089A20053027FAE5005F6A4DFAE5005F7AE530D7FAE530EA61EF7AE5300F6AA01AE530071
|
||||
:2089C200F7AE5302F6A0014F494425F5AE53027FAE5005F6A4EFAE5005F7AE530D7FAE5378
|
||||
:2089E2000EA61EF7AE5300F6AA01AE5300F7AE5302F6A0014F494425F5AE53027F81AE5081
|
||||
:208A020005F6A4DFAE5005F7AE5005F6A4EFAE5005F7AE530D7FAE530EA61EF7AE5300F608
|
||||
:208A2200AA01AE5300F7AE5302F6A0014F494425F5AE53027FAE5005F6AA10AE5005F7AE24
|
||||
:208A4200530D7FAE530EA61EF7AE5300F6AA01AE5300F7AE5302F6A0014F494425F5AE5340
|
||||
:208A6200027FAE5005F6AA20AE5005F781880F01AE5005F6A4EFAE5005F7AE5005F6887B1B
|
||||
:208A82000548842408AA20AE5005F72006A4DFAE5005F7AE530D7FAE530EA61EF7AE530018
|
||||
:208AA200F6AA01AE5300F7AE5302F6A0014F494425F5AE53027FAE5005F6AA10AE5005F75C
|
||||
:208AC200AE530D7FAE530EA61EF7AE5300F6AA01AE5300F7AE5302F6A0014F494425F5AE65
|
||||
:208AE20053027F7B04486B040C017B01A1082403CC8A72AE5005F6A4EFAE5005F7AE5005C0
|
||||
:208B0200F6AA20AE5005F7AE530D7FAE530EA61EF7AE5300F6AA01AE5300F7AE5302F6A00F
|
||||
:208B2200014F494425F5AE53027FAE5005F6AA10AE5005F7AE530D7FAE530EA60FF7AE53C4
|
||||
:208B420000F6AA01AE5300F7AE5302F6A0014F494425F5AE53027FAE5006F6A420A0014FBA
|
||||
:208B6200499095AE5005F6A4EFAE5005F7909E5B018152030F010F027B016B0308037B030B
|
||||
:208B82006B01AE5005F6A4EFAE5005F7AE530D7FAE530EA61EF7AE5300F6AA01AE5300F7F0
|
||||
:208BA200AE5302F6A0014F494425F5AE53027FAE5005F6AA10AE5005F7AE5006F6A520270E
|
||||
:208BC200067B01AA016B01AE530D7FAE530EA61EF7AE5300F6AA01AE5300F7AE5302F6A070
|
||||
:208BE200014F494425F5AE53027F0C027B02A1082403CC8B7AAE5005F6A4EFAE5005F7AE9A
|
||||
:208C02005005F60D062708A4DFAE5005F72006AA20AE5005F7AE530D7FAE530EA61EF7AE59
|
||||
:208C22005300F6AA01AE5300F7AE5302F6A0014F494425F5AE53027FAE5005F6AA10AE5083
|
||||
:208C420005F7AE530D7FAE530EA61EF7AE5300F6AA01AE5300F7AE5302F6A0014F4944258A
|
||||
:208C6200F5AE53027FAE5005F6A4EFAE5005F7AE5005F6AA20AE5005F77B015B0381520289
|
||||
:208C8200A6016B01A6016B02AE5005F6AA10AE5005F7AE5005F6AA20AE5005F7AE5006F647
|
||||
:208CA200A5202725A5102721CD8978A6046B013B0013CD8A6F5B014D270F7B0588CD8A6FFF
|
||||
:208CC2005B014D27040F010F020D0626040D022703CD8A007B015B02815203A6016B01AE60
|
||||
:208CE2005005F6AA10AE5005F7AE5005F6AA20AE5005F7AE5006F6A5202735A5102731CDC1
|
||||
:208D020089783B0013CD8A6F5B014D27231E067B086B037B036B020A030D022711F65C1F84
|
||||
:208D2200068988CD8A6F5B01854D26E720020F010D0926040D012703CD8A004F5B03818862
|
||||
:208D4200A6046B01AE5005F6AA10AE5005F7AE5005F6AA20AE5005F7AE5006F6A5202704A7
|
||||
:208D6200A5102606A6016B01201CCD89783B0012CD8A6F5B014D270E1E04894B00CD8B7440
|
||||
:208D82005B0185F70F01CD8A007B015B018188A6046B01AE5005F6AA10AE5005F7AE5005EB
|
||||
:208DA200F6AA20AE5005F7AE5006F6A5202704A5102606A6016B012027CD89783B0012CDEA
|
||||
:208DC2008A6F5B014D27191E04894B01CD8B745B0185F75C894B00CD8B745B0185F70F0130
|
||||
:098DE200CD8A007B015B01818058
|
||||
:0291CE0000009F
|
||||
:208DEB00521D1E22A300007B21A2007B20A2002F040F0D2004A6016B0D0D0D27151E225023
|
||||
:208E0B004F12216B1B4F12201F186B167B1B6B172008162217181620171616181714161677
|
||||
:208E2B0017121E26A300007B25A2007B24A2002E1E7B27406B114F12266B104F12256B0FE8
|
||||
:208E4B004F12246B0E1610170B160E170920081626170B16241709160B170716091E078991
|
||||
:208E6B0090891E18891E1889CD8E905B0817010D0D270D504F120290974F12019095200219
|
||||
:208E8B0016015B1D8152040F020F017B0B484F494D262E160D1E0B905859170D1F0B1E0937
|
||||
:208EAB00130D7B08120C7B07120B240D160D1E0B549056170D1F0B20080C017B016B022004
|
||||
:208ECB00CA7B026B041E09130D7B08120C7B07120B2513160972F20D7B08120C977B0712B6
|
||||
:208EEB000B9517091F07160D1E0B549056170D1F0B7B046B030A040D0326CA1E0916075B13
|
||||
:208F0B000481521E1E23A300007B22A2007B21A2002F040F112004A6016B110D1127151EDE
|
||||
:208F2B0023504F12226B0E4F12211F076B057B0E6B0620081623170716211705160717148B
|
||||
:208F4B00160517121E27A300007B26A2007B25A2002F040F162004A6016B160D16271E7BCE
|
||||
:208F6B0028406B1E4F12276B1D4F12266B1C4F12256B1B161D1719161B171720081627178D
|
||||
:208F8B0019162517171619170B16171E0B8990891E18891E1889CD8FC15B0817017B111841
|
||||
:208FAB00164D270D504F120290974F12019095200216015B1E8152125F1F051F03A6206B41
|
||||
:208FCB00027B15484F496B0116171E1590585917171F157B036B0F1E04887B076B13840877
|
||||
:208FEB001259090F1F047B126B067B0F6B030D01271A7B06AA016B0A7B056B097B046B08F4
|
||||
:20900B007B036B0716091705160717031E05131B7B04121A7B031219252B160572F21B7BD9
|
||||
:20902B0004121A6B0C7B03121917056B037B0C6B047B18AA0190977B1790957B16977B1581
|
||||
:20904B009517171F150A020D022703CC8FCC1E1716155B128152409096905C961C00431F9C
|
||||
:20906B000B1E0BE603961C00471F151E151F171E171F3F1E3F88E60197844290FF72A900CC
|
||||
:20908B00021E0BE6031E151F111E111F131E131F191E1988E60397844290FF965C1F1B1EA6
|
||||
:2090AB001BF66B1D1E0BF697161590E603429F1B1D1E1BF71E1BF66B1E1E0BE601971615DF
|
||||
:2090CB0090E602429F1B1E1E1BF79096905C93FE1F1F1E0BE6011E151F211E211F231E239D
|
||||
:2090EB001F251E2588E60397844272FB1F90FF93FE1F271E0BE6021E151F291E291F2B1EE3
|
||||
:20910B002B1F2F1E2F88E60297844272FB2790FF160B1E0BE6021E151F311E311F331E33E7
|
||||
:20912B001F351E3588E6019784429F90F71E0B5C1F371E0BE60290971E15E60390421E3735
|
||||
:20914B00FF16151E0BE6031E151F3D1E3D1F051E0588F69784429F90F71E155C1F2D1E0B92
|
||||
:20916B00E60390971E15E60290421E2DFF1E151C00037F1E0B1C00037F965CE6036B0AE6CF
|
||||
:20918B00026B09E6016B08F61643170D164572F909173B887B09190F6B3B84190D6B391622
|
||||
:1A91AB003BEF021639FFFE16491E4772F93B9F193A979E193995515B40814D
|
||||
:00000001FF
|
||||
238
si7005_softi2c/soft_i2c.c
Normal file
238
si7005_softi2c/soft_i2c.c
Normal file
@ -0,0 +1,238 @@
|
||||
/*
|
||||
* soft_i2c.c - functions to work with SW I2C
|
||||
*
|
||||
* Copyright 2015 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#include "soft_i2c.h"
|
||||
#include "ports_definition.h"
|
||||
/*
|
||||
* In file ports_definition.h should be defined:
|
||||
* I2C_SDA_PIN, I2C_SDA_PORT, I2C_SCL_PIN and I2C_SCL_PORT
|
||||
*/
|
||||
|
||||
static U8 addr7r = 0, addr7w = 0;
|
||||
|
||||
extern volatile unsigned long Global_time;
|
||||
|
||||
#define PAUSE(val) do{TIM2_ARRH = 0; TIM2_ARRL = val; TIM2_CR1 |= TIM_CR1_CEN; \
|
||||
while(!TIM2_SR1 & TIM_SR1_UIF); TIM2_SR1 = 0;}while(0)
|
||||
|
||||
#define H_DEL PAUSE(30)
|
||||
#define Q_DEL PAUSE(15)
|
||||
#define H_SCL PORT(I2C_SCL_PORT, ODR) |= I2C_SCL_PIN
|
||||
#define L_SCL PORT(I2C_SCL_PORT, ODR) &= ~I2C_SCL_PIN
|
||||
#define H_SDA PORT(I2C_SDA_PORT, ODR) |= I2C_SDA_PIN
|
||||
#define L_SDA PORT(I2C_SDA_PORT, ODR) &= ~I2C_SDA_PIN
|
||||
#define CHK_SDA (PORT(I2C_SDA_PORT, IDR) & I2C_SDA_PIN)
|
||||
#define CHK_SCL (PORT(I2C_SCL_PORT, IDR) & I2C_SCL_PIN)
|
||||
|
||||
/**
|
||||
* configure timer for 100kHz speed in standard mode
|
||||
*/
|
||||
void i2c_setup(){
|
||||
// configure pins: I2C_SDA; I2C_SCL (both opendrain)
|
||||
PORT(I2C_SDA_PORT, ODR) |= I2C_SDA_PIN; // set to 1
|
||||
PORT(I2C_SCL_PORT, ODR) |= I2C_SCL_PIN;
|
||||
PORT(I2C_SDA_PORT, DDR) |= I2C_SDA_PIN;
|
||||
PORT(I2C_SCL_PORT, DDR) |= I2C_SCL_PIN;
|
||||
PORT(I2C_SDA_PORT, CR2) |= I2C_SDA_PIN;
|
||||
PORT(I2C_SCL_PORT, CR2) |= I2C_SCL_PIN;
|
||||
// configure TIM2 for delays
|
||||
TIM2_PSCR = 0; // 16MHz (for working @ 100kHz: 1us \approx 16tacts)
|
||||
TIM2_CR1 = TIM_CR1_OPM; // one-pulse mode
|
||||
}
|
||||
|
||||
void i2c_set_addr7(U8 addr){
|
||||
addr7w = addr << 1;
|
||||
addr7r = addr7w | 1;
|
||||
}
|
||||
|
||||
void SoftStart(){
|
||||
H_SCL;
|
||||
H_DEL;
|
||||
L_SDA;
|
||||
H_DEL;
|
||||
L_SCL;
|
||||
H_DEL;
|
||||
}
|
||||
|
||||
void SoftStop(){
|
||||
L_SDA;
|
||||
L_SCL;
|
||||
H_DEL;
|
||||
H_SCL;
|
||||
H_DEL;
|
||||
H_SDA;
|
||||
}
|
||||
|
||||
/**
|
||||
* send 1 byte without start/stop
|
||||
*/
|
||||
U8 softi2c_send(U8 data){
|
||||
U8 i;
|
||||
for(i=0; i < 8; i++){
|
||||
L_SCL;
|
||||
if(data & 0x80)
|
||||
H_SDA;
|
||||
else
|
||||
L_SDA;
|
||||
H_DEL;
|
||||
H_SCL;
|
||||
H_DEL;
|
||||
data <<= 1;
|
||||
}
|
||||
// ACK
|
||||
L_SCL;
|
||||
H_SDA;
|
||||
H_DEL;
|
||||
H_SCL;
|
||||
Q_DEL;
|
||||
i = !(CHK_SDA);
|
||||
// Q_DEL;
|
||||
L_SCL;
|
||||
// Q_DEL;
|
||||
return i;
|
||||
}
|
||||
/**
|
||||
* receive one byte without start/stop
|
||||
*/
|
||||
U8 softi2c_receive(U8 ack){
|
||||
U8 data = 0, i;
|
||||
for(i=0; i<8; i++){
|
||||
data <<= 1;
|
||||
L_SCL;
|
||||
H_DEL;
|
||||
H_SCL;
|
||||
if(CHK_SDA) data |= 1;
|
||||
H_DEL;
|
||||
}
|
||||
// prepare for ACK/NACK
|
||||
L_SCL;
|
||||
if(ack) L_SDA;
|
||||
else H_SDA;
|
||||
H_DEL;
|
||||
H_SCL;
|
||||
H_DEL;
|
||||
L_SCL;
|
||||
H_SDA;
|
||||
return data;
|
||||
}
|
||||
|
||||
/**
|
||||
* send one byte in 7bit address mode
|
||||
* @param data - data to write
|
||||
* @param stop - ==1 to send stop event
|
||||
* @return I2C_OK if success errcode if fails
|
||||
*/
|
||||
i2c_status i2c_7bit_send_onebyte(U8 data, U8 stop){
|
||||
i2c_status ret = I2C_LINEBUSY;
|
||||
U8 err = 1;
|
||||
H_SCL; H_SDA;
|
||||
if(!CHK_SDA || !CHK_SCL) goto eotr;
|
||||
SoftStart();
|
||||
ret = I2C_NACK;
|
||||
if(!softi2c_send(addr7w)) goto eotr;
|
||||
if(softi2c_send(data)){
|
||||
ret = I2C_OK;
|
||||
err = 0;
|
||||
}
|
||||
eotr:
|
||||
if(stop || err){
|
||||
SoftStop();
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* send datalen bytes over I2C
|
||||
* @param data - data to write
|
||||
* @param datalen - amount of bytes in data array
|
||||
* @param stop - ==1 to send stop event
|
||||
* return I2C_OK if OK
|
||||
*/
|
||||
i2c_status i2c_7bit_send(U8 *data, U8 datalen, U8 stop){
|
||||
i2c_status ret = I2C_LINEBUSY;
|
||||
U8 err = 1;
|
||||
H_SCL; H_SDA;
|
||||
if(!CHK_SDA || !CHK_SCL) goto eotr;
|
||||
SoftStart();
|
||||
ret = I2C_NACK;
|
||||
if(!softi2c_send(addr7w)) goto eotr;
|
||||
while(datalen--){
|
||||
if(!softi2c_send(*data++)) goto eotr;
|
||||
}
|
||||
ret = I2C_OK;
|
||||
err = 0;
|
||||
eotr:
|
||||
if(stop || err){
|
||||
SoftStop();
|
||||
}
|
||||
return I2C_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* get one byte by I2C
|
||||
* @param data - data to read (one byte)
|
||||
* @param wait - leaved for compatibility with HW I2C
|
||||
* @return I2C_OK if ok || error code
|
||||
*/
|
||||
i2c_status i2c_7bit_receive_onebyte(U8 *data, U8 wait){
|
||||
i2c_status ret = I2C_NACK;
|
||||
H_SCL; H_SDA;
|
||||
(void) wait;
|
||||
if(!CHK_SDA || !CHK_SCL){
|
||||
ret = I2C_LINEBUSY;
|
||||
goto eotr;
|
||||
}
|
||||
SoftStart();
|
||||
if(!softi2c_send(addr7r)) goto eotr;
|
||||
*data = softi2c_receive(0);
|
||||
ret = I2C_OK;
|
||||
eotr:
|
||||
SoftStop();
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* receive 2 bytes by I2C
|
||||
* @param data - data to read (two bytes array, 0 first)
|
||||
* @param wait - ==1 to wait while LINEBUSY (can send STOP before reading)
|
||||
* @return I2C_OK if ok || error code
|
||||
*/
|
||||
i2c_status i2c_7bit_receive_twobyte(U8 *data, U8 wait){
|
||||
i2c_status ret = I2C_NACK;
|
||||
H_SCL; H_SDA;
|
||||
(void) wait;
|
||||
if(!CHK_SDA || !CHK_SCL){
|
||||
ret = I2C_LINEBUSY;
|
||||
goto eotr;
|
||||
}
|
||||
SoftStart();
|
||||
if(!softi2c_send(addr7r)) goto eotr;
|
||||
data[0] = softi2c_receive(1);
|
||||
data[1] = softi2c_receive(0);
|
||||
ret = I2C_OK;
|
||||
eotr:
|
||||
SoftStop();
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
INTERRUPT_HANDLER(I2C_IRQHandler, 19){
|
||||
}
|
||||
45
si7005_softi2c/soft_i2c.h
Normal file
45
si7005_softi2c/soft_i2c.h
Normal file
@ -0,0 +1,45 @@
|
||||
/*
|
||||
* soft_i2c.h
|
||||
*
|
||||
* Copyright 2015 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
#ifndef __I2C_H__
|
||||
#define __I2C_H__
|
||||
|
||||
#include "stm8l.h"
|
||||
|
||||
// flags for i2c_state
|
||||
typedef enum{
|
||||
I2C_OK = 0,
|
||||
I2C_LINEBUSY,
|
||||
I2C_TMOUT,
|
||||
I2C_NOADDR,
|
||||
I2C_NACK,
|
||||
I2C_HWPROBLEM,
|
||||
} i2c_status;
|
||||
|
||||
void i2c_setup();
|
||||
void i2c_set_addr7(U8 addr);
|
||||
i2c_status i2c_7bit_send_onebyte(U8 data, U8 stop);
|
||||
i2c_status i2c_7bit_send(U8 *data, U8 datalen, U8 stop);
|
||||
i2c_status i2c_7bit_receive_onebyte(U8 *data, U8 wait);
|
||||
i2c_status i2c_7bit_receive_twobyte(U8 *data, U8 wait);
|
||||
|
||||
#endif // __I2C_H__
|
||||
169
si7005_softi2c/uart.c
Normal file
169
si7005_softi2c/uart.c
Normal file
@ -0,0 +1,169 @@
|
||||
/*
|
||||
* blinky.c
|
||||
*
|
||||
* Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
|
||||
#include "ports_definition.h"
|
||||
#include "uart.h"
|
||||
#include "interrupts.h"
|
||||
|
||||
U8 UART_rx[UART_BUF_LEN]; // cycle buffer for received data
|
||||
U8 UART_rx_start_i = 0; // started index of received data (from which reading starts)
|
||||
U8 UART_rx_cur_i = 0; // index of current first byte in rx array (to which data will be written)
|
||||
|
||||
/**
|
||||
* Send one byte through UART
|
||||
* @param byte - data to send
|
||||
*/
|
||||
void UART_send_byte(U8 byte){
|
||||
while(!(UART2_SR & UART_SR_TXE)); // wait until previous byte transmitted
|
||||
UART2_DR = byte;
|
||||
}
|
||||
|
||||
void uart_write(char *str){
|
||||
while(*str){
|
||||
while(!(UART2_SR & UART_SR_TXE));
|
||||
UART2_CR2 |= UART_CR2_TEN;
|
||||
UART2_DR = *str++;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Read one byte from Rx buffer
|
||||
* @param byte - where to store readed data
|
||||
* @return 1 in case of non-empty buffer
|
||||
*/
|
||||
U8 UART_read_byte(U8 *byte){
|
||||
if(UART_rx_start_i == UART_rx_cur_i) // buffer is empty
|
||||
return 0;
|
||||
*byte = UART_rx[UART_rx_start_i++];
|
||||
check_UART_pointer(UART_rx_start_i);
|
||||
return 1;
|
||||
}
|
||||
|
||||
void printUint(U8 *val, U8 len){
|
||||
unsigned long Number = 0;
|
||||
U8 i = len;
|
||||
char ch;
|
||||
U8 decimal_buff[12]; // max len of U32 == 10 + \n + \0
|
||||
if(len > 4 || len == 3 || len == 0) return;
|
||||
for(i = 0; i < 12; i++)
|
||||
decimal_buff[i] = 0;
|
||||
decimal_buff[10] = '\n';
|
||||
ch = 9;
|
||||
switch(len){
|
||||
case 1:
|
||||
Number = *((U8*)val);
|
||||
break;
|
||||
case 2:
|
||||
Number = *((U16*)val);
|
||||
break;
|
||||
case 4:
|
||||
Number = *((unsigned long*)val);
|
||||
break;
|
||||
}
|
||||
do{
|
||||
i = Number % 10L;
|
||||
decimal_buff[ch--] = i + '0';
|
||||
Number /= 10L;
|
||||
}while(Number && ch > -1);
|
||||
uart_write((char*)&decimal_buff[ch+1]);
|
||||
}
|
||||
|
||||
/**
|
||||
* print signed long onto terminal
|
||||
* max len = 10 symbols + 1 for "-" + 1 for '\n' + 1 for 0 = 13
|
||||
*/
|
||||
void print_long(long Number){
|
||||
U8 i, L = 0;
|
||||
char ch;
|
||||
char decimal_buff[12];
|
||||
decimal_buff[11] = 0;
|
||||
ch = 11;
|
||||
if(Number < 0){
|
||||
Number = -Number;
|
||||
L = 1;
|
||||
}
|
||||
do{
|
||||
i = Number % 10L;
|
||||
decimal_buff[--ch] = i + '0';
|
||||
Number /= 10L;
|
||||
}while(Number && ch > 0);
|
||||
if(ch > 0 && L) decimal_buff[--ch] = '-';
|
||||
uart_write(&decimal_buff[ch]);
|
||||
}
|
||||
|
||||
U8 readInt(int *val){
|
||||
unsigned long T = Global_time;
|
||||
unsigned long R = 0;
|
||||
int readed;
|
||||
U8 sign = 0, rb, ret = 0, bad = 0;
|
||||
do{
|
||||
if(!UART_read_byte(&rb)) continue;
|
||||
if(rb == '-' && R == 0){ // negative number
|
||||
sign = 1;
|
||||
continue;
|
||||
}
|
||||
if(rb < '0' || rb > '9') break; // number ends with any non-digit symbol that will be omitted
|
||||
ret = 1; // there's at least one digit
|
||||
R = R * 10L + rb - '0';
|
||||
if(R > 0x7fff){ // bad value
|
||||
R = 0;
|
||||
bad = 0;
|
||||
}
|
||||
}while(Global_time - T < 10000); // wait no longer than 10s
|
||||
if(bad || !ret) return 0;
|
||||
readed = (int) R;
|
||||
if(sign) readed *= -1;
|
||||
*val = readed;
|
||||
return 1;
|
||||
}
|
||||
|
||||
void error_msg(char *msg){
|
||||
uart_write("\nERROR: ");
|
||||
uart_write(msg);
|
||||
UART_send_byte('\n');
|
||||
}
|
||||
|
||||
U8 U8toHEX(U8 val){
|
||||
val &= 0x0f;
|
||||
if(val < 10) val += '0';
|
||||
else val += 'a' - 10;
|
||||
return val;
|
||||
}
|
||||
|
||||
void printUHEX(U8 val){
|
||||
uart_write("0x");
|
||||
UART_send_byte(U8toHEX(val>>4)); // MSB
|
||||
UART_send_byte(U8toHEX(val)); // LSB
|
||||
}
|
||||
|
||||
void uart_init(){
|
||||
// PD5 - UART2_TX
|
||||
PORT(UART_PORT, DDR) |= UART_TX_PIN;
|
||||
PORT(UART_PORT, CR1) |= UART_TX_PIN;
|
||||
// Configure UART
|
||||
// 8 bit, no parity, 1 stop (UART_CR1/3 = 0 - reset value)
|
||||
// 57600 on 16MHz: BRR1=0x11, BRR2=0x06
|
||||
UART2_BRR1 = 0x11; UART2_BRR2 = 0x06;
|
||||
UART2_CR2 = UART_CR2_TEN | UART_CR2_REN | UART_CR2_RIEN; // Allow RX/TX, generate ints on rx
|
||||
}
|
||||
|
||||
|
||||
45
si7005_softi2c/uart.h
Normal file
45
si7005_softi2c/uart.h
Normal file
@ -0,0 +1,45 @@
|
||||
/*
|
||||
* blinky.h
|
||||
*
|
||||
* Copyright 2014 Edward V. Emelianoff <eddy@sao.ru>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||||
* MA 02110-1301, USA.
|
||||
*/
|
||||
#pragma once
|
||||
#ifndef __MAIN_H__
|
||||
#define __MAIN_H__
|
||||
|
||||
extern volatile unsigned long Global_time; // global time in ms
|
||||
|
||||
#define UART_BUF_LEN 8 // max 7 bytes transmited in on operation
|
||||
|
||||
extern U8 UART_rx[];
|
||||
extern U8 UART_rx_start_i;
|
||||
extern U8 UART_rx_cur_i;
|
||||
|
||||
|
||||
void UART_send_byte(U8 byte);
|
||||
void uart_write(char *str);
|
||||
void printUint(U8 *val, U8 len);
|
||||
void print_long(long Number);
|
||||
void error_msg(char *msg);
|
||||
void uart_init();
|
||||
U8 UART_read_byte(U8 *byte);
|
||||
void printUHEX(U8 val);
|
||||
|
||||
#define check_UART_pointer(x) do{if(x == UART_BUF_LEN) x = 0;}while(0)
|
||||
|
||||
#endif // __MAIN_H__
|
||||
36
stm8l.h
36
stm8l.h
@ -492,6 +492,42 @@ typedef unsigned long U32;
|
||||
// CCR REGISTER: bits 3&5 should be 1 if you wanna change EXTI_CRx
|
||||
#define CCR *(unsigned char*)0x7F0A
|
||||
|
||||
/* -------------------- OPTION BYTES -------------------- */
|
||||
#if defined STM8S105
|
||||
// readout protection
|
||||
#define OPT0 *(unsigned char*)0x4800
|
||||
// user boot code
|
||||
#define OPT1 *(unsigned char*)0x4801
|
||||
#define NOPT1 *(unsigned char*)0x4802
|
||||
// alternate functions remapping
|
||||
// | AFR7 | ... | AFR0 |
|
||||
// AFR7 - PD4 = BEEP; AFR6 - PB4/PB5 = I2C; AFR5 - PB0..3 - TIM1
|
||||
// AFR4 - PD7 = TIM1_CH4; AFR3 - PD0 = TIM1_BKIN
|
||||
// AFR2 - PD0 = CLK_CCO; AFR1 - PA3 = TIM3_CH1, PD2 = TIM2_CH3
|
||||
// AFR0 - PD3 = ADC_ETR
|
||||
#define OPT2 *(unsigned char*)0x4803
|
||||
#define NOPT2 *(unsigned char*)0x4804
|
||||
// trim, watchdog
|
||||
#define OPT3 *(unsigned char*)0x4805
|
||||
#define NOPT3 *(unsigned char*)0x4806
|
||||
// extclc, awu
|
||||
#define OPT4 *(unsigned char*)0x4807
|
||||
#define NOPT4 *(unsigned char*)0x4808
|
||||
// HSE stab time
|
||||
#define OPT5 *(unsigned char*)0x4809
|
||||
#define NOPT5 *(unsigned char*)0x480a
|
||||
// none
|
||||
#define OPT6 *(unsigned char*)0x480b
|
||||
#define NOPT6 *(unsigned char*)0x480c
|
||||
// none
|
||||
#define OPT7 *(unsigned char*)0x480d
|
||||
#define NOPT7 *(unsigned char*)0x480e
|
||||
// bootloader opt byte
|
||||
#define OPTBL *(unsigned char*)0x487e
|
||||
#define NOPTBL *(unsigned char*)0x487f
|
||||
|
||||
#endif
|
||||
|
||||
#endif // __STM8L_H__
|
||||
|
||||
// #define *(unsigned char*)0x
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user