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add 1-wire

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This commit is contained in:
Edward Emelianov 2015-04-04 20:27:02 +03:00
parent 1a0095a9ae
commit b861211e29
23 changed files with 2236 additions and 22 deletions
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34
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NAME=testproj
SDCC=sdcc
CCFLAGS=-DSTM8S105 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx
LDFLAGS= -mstm8 --out-fmt-ihx -lstm8
FLASHFLAGS=-cstlinkv2 -pstm8s105
SRC=$(wildcard *.c)
# ATTENTION: FIRST in list should be file with main()
OBJ=$(SRC:%.c=%.rel)
TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
TRASH+=$(SRC:%.c=%.sym) $(NAME).lk $(NAME).map
INDEPENDENT_HEADERS=../stm8l.h ports_definition.h Makefile
all: $(NAME).ihx
$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
@touch $@
%.h: ;
clean:
rm -f $(TRASH)
load: $(NAME).ihx
stm8flash $(FLASHFLAGS) -w $(NAME).ihx
%.rel: %.c
$(SDCC) $(CCFLAGS) -c $<
$(NAME).ihx: $(OBJ)
$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
.PHONY: all

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/*
* interrupts.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 "onewire.h"
// Top Level Interrupt
INTERRUPT_HANDLER(TLI_IRQHandler, 0){}
// Auto Wake Up Interrupt
INTERRUPT_HANDLER(AWU_IRQHandler, 1){}
// Clock Controller Interrupt
INTERRUPT_HANDLER(CLK_IRQHandler, 2){}
// External Interrupt PORTA
INTERRUPT_HANDLER(EXTI_PORTA_IRQHandler, 3){}
// External Interrupt PORTB
INTERRUPT_HANDLER(EXTI_PORTB_IRQHandler, 4){}
// External Interrupt PORTC
INTERRUPT_HANDLER(EXTI_PORTC_IRQHandler, 5){
}
// External Interrupt PORTD
INTERRUPT_HANDLER(EXTI_PORTD_IRQHandler, 6){
}
// External Interrupt PORTE
INTERRUPT_HANDLER(EXTI_PORTE_IRQHandler, 7){}
#ifdef STM8S903
// External Interrupt PORTF
INTERRUPT_HANDLER(EXTI_PORTF_IRQHandler, 8){}
#endif // STM8S903
#if defined (STM8S208) || defined (STM8AF52Ax)
// CAN RX Interrupt routine.
INTERRUPT_HANDLER(CAN_RX_IRQHandler, 8){}
// CAN TX Interrupt routine.
INTERRUPT_HANDLER(CAN_TX_IRQHandler, 9){}
#endif // STM8S208 || STM8AF52Ax
// SPI Interrupt routine.
INTERRUPT_HANDLER(SPI_IRQHandler, 10){}
// Timer1 Update/Overflow/Trigger/Break Interrupt
INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11){
}
// Timer1 Capture/Compare Interrupt routine.
INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12){}
#ifdef STM8S903
// Timer5 Update/Overflow/Break/Trigger Interrupt
INTERRUPT_HANDLER(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13){}
// Timer5 Capture/Compare Interrupt
INTERRUPT_HANDLER(TIM5_CAP_COM_IRQHandler, 14){}
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
// Timer2 Update/Overflow/Break Interrupt
INTERRUPT_HANDLER(TIM2_UPD_OVF_BRK_IRQHandler, 13){
}
// Timer2 Capture/Compare Interrupt
// manage with sending/receiving
INTERRUPT_HANDLER(TIM2_CAP_COM_IRQHandler, 14){
if(TIM2_SR1 & TIM_SR1_CC1IF){
TIM2_SR1 &= ~TIM_SR1_CC1IF;
onewire_gotlen = TIM2_CCR1H << 8;
onewire_gotlen |= TIM2_CCR1L;
if(onewire_tick_ctr){ // there's some more data to transmit / receive
--onewire_tick_ctr;
if(is_receiver){// receive bits
ow_data >>= 1;
if(onewire_gotlen < ONE_ZERO_BARRIER){ // this is 1
ow_data |= 0x80; // LSbit first!
}
// in receiver mode we don't need to send byte after ctr is zero!
if(onewire_tick_ctr == 0){
TIM2_CR1 &= ~TIM_CR1_CEN;
}
}else{// transmit bits
// update CCR2 registers with new values
if(ow_data & 1){ // transmit 1
TIM2REG(CCR2, BIT_ONE_P);
}else{ // transmit 0
TIM2REG(CCR2, BIT_ZERO_P);
}
ow_data >>= 1;
}
}else{ // end: turn off timer
TIM2_CR1 &= ~TIM_CR1_CEN;
}
}
//if(TIM2_SR1 & TIM_SR1_CC2IF)
// TIM2_SR1 &= ~TIM_SR1_CC2IF;
}
#endif // STM8S903
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
defined(STM8S005) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
// Timer3 Update/Overflow/Break Interrupt
INTERRUPT_HANDLER(TIM3_UPD_OVF_BRK_IRQHandler, 15){}
// Timer3 Capture/Compare Interrupt
INTERRUPT_HANDLER(TIM3_CAP_COM_IRQHandler, 16){}
#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
defined(STM8S003) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
// UART1 TX Interrupt
INTERRUPT_HANDLER(UART1_TX_IRQHandler, 17){}
// UART1 RX Interrupt
INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18){}
#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
// I2C Interrupt
INTERRUPT_HANDLER(I2C_IRQHandler, 19){}
#if defined(STM8S105) || defined(STM8S005) || defined (STM8AF626x)
// UART2 TX interrupt
INTERRUPT_HANDLER(UART2_TX_IRQHandler, 20){}
// UART2 RX interrupt
INTERRUPT_HANDLER(UART2_RX_IRQHandler, 21){
U8 rb;
if(UART2_SR & UART_SR_RXNE){ // data received
rb = UART2_DR; // read received byte & clear RXNE flag
while(!(UART2_SR & UART_SR_TXE));
UART2_DR = rb; // echo received symbol
UART_rx[UART_rx_cur_i++] = rb; // put received byte into cycled buffer
if(UART_rx_cur_i == UART_rx_start_i){ // Oops: buffer overflow! Just forget old data
UART_rx_start_i++;
check_UART_pointer(UART_rx_start_i);
}
check_UART_pointer(UART_rx_cur_i);
}
}
#endif // STM8S105 or STM8AF626x
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// UART3 TX interrupt
INTERRUPT_HANDLER(UART3_TX_IRQHandler, 20){}
// UART3 RX interrupt
INTERRUPT_HANDLER(UART3_RX_IRQHandler, 21){}
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// ADC2 interrupt
INTERRUPT_HANDLER(ADC2_IRQHandler, 22){}
#else
// ADC1 interrupt
INTERRUPT_HANDLER(ADC1_IRQHandler, 22){
}
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#ifdef STM8S903
// Timer6 Update/Overflow/Trigger Interrupt
INTERRUPT_HANDLER(TIM6_UPD_OVF_TRG_IRQHandler, 23){}
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
// Timer4 Update/Overflow Interrupt
INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23){
if(TIM4_SR & TIM_SR1_UIF){ // update interrupt
Global_time++; // increase timer
}
TIM4_SR = 0; // clear all interrupt flags
}
#endif // STM8S903
// Eeprom EEC Interrupt
INTERRUPT_HANDLER(EEPROM_EEC_IRQHandler, 24){}

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/*
* interrupts.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 __INTERRUPTS_H__
#define __INTERRUPTS_H__
#include "stm8l.h"
// Top Level Interrupt
INTERRUPT_DEFINITION(TLI_IRQHandler, 0);
// Auto Wake Up Interrupt
INTERRUPT_DEFINITION(AWU_IRQHandler, 1);
// Clock Controller Interrupt
INTERRUPT_DEFINITION(CLK_IRQHandler, 2);
// External Interrupt PORTA
INTERRUPT_DEFINITION(EXTI_PORTA_IRQHandler, 3);
// External Interrupt PORTB
INTERRUPT_DEFINITION(EXTI_PORTB_IRQHandler, 4);
// External Interrupt PORTC
INTERRUPT_DEFINITION(EXTI_PORTC_IRQHandler, 5);
// External Interrupt PORTD
INTERRUPT_DEFINITION(EXTI_PORTD_IRQHandler, 6);
// External Interrupt PORTE
INTERRUPT_DEFINITION(EXTI_PORTE_IRQHandler, 7);
#ifdef STM8S903
// External Interrupt PORTF
INTERRUPT_DEFINITION(EXTI_PORTF_IRQHandler, 8);
#endif // STM8S903
#if defined (STM8S208) || defined (STM8AF52Ax)
// CAN RX Interrupt routine.
INTERRUPT_DEFINITION(CAN_RX_IRQHandler, 8);
// CAN TX Interrupt routine.
INTERRUPT_DEFINITION(CAN_TX_IRQHandler, 9);
#endif // STM8S208 || STM8AF52Ax
// SPI Interrupt routine.
INTERRUPT_DEFINITION(SPI_IRQHandler, 10);
// Timer1 Update/Overflow/Trigger/Break Interrupt
INTERRUPT_DEFINITION(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11);
// Timer1 Capture/Compare Interrupt routine.
INTERRUPT_DEFINITION(TIM1_CAP_COM_IRQHandler, 12);
#ifdef STM8S903
// Timer5 Update/Overflow/Break/Trigger Interrupt
INTERRUPT_DEFINITION(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13);
// Timer5 Capture/Compare Interrupt
INTERRUPT_DEFINITION(TIM5_CAP_COM_IRQHandler, 14);
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
// Timer2 Update/Overflow/Break Interrupt
INTERRUPT_DEFINITION(TIM2_UPD_OVF_BRK_IRQHandler, 13);
// Timer2 Capture/Compare Interrupt
INTERRUPT_DEFINITION(TIM2_CAP_COM_IRQHandler, 14);
#endif // STM8S903
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
defined(STM8S005) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
// Timer3 Update/Overflow/Break Interrupt
INTERRUPT_DEFINITION(TIM3_UPD_OVF_BRK_IRQHandler, 15);
// Timer3 Capture/Compare Interrupt
INTERRUPT_DEFINITION(TIM3_CAP_COM_IRQHandler, 16);
#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
defined(STM8S003) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
// UART1 TX Interrupt
INTERRUPT_DEFINITION(UART1_TX_IRQHandler, 17);
// UART1 RX Interrupt
INTERRUPT_DEFINITION(UART1_RX_IRQHandler, 18);
#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
// I2C Interrupt
INTERRUPT_DEFINITION(I2C_IRQHandler, 19);
#if defined(STM8S105) || defined(STM8S005) || defined (STM8AF626x)
// UART2 TX interrupt
INTERRUPT_DEFINITION(UART2_TX_IRQHandler, 20);
// UART2 RX interrupt
INTERRUPT_DEFINITION(UART2_RX_IRQHandler, 21);
#endif // STM8S105 or STM8AF626x
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// UART3 TX interrupt
INTERRUPT_DEFINITION(UART3_TX_IRQHandler, 20);
// UART3 RX interrupt
INTERRUPT_DEFINITION(UART3_RX_IRQHandler, 21);
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// ADC2 interrupt
INTERRUPT_DEFINITION(ADC2_IRQHandler, 22);
#else // STM8S105, STM8S103 or STM8S903 or STM8AF626x
// ADC1 interrupt
INTERRUPT_DEFINITION(ADC1_IRQHandler, 22);
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#ifdef STM8S903
// Timer6 Update/Overflow/Trigger Interrupt
INTERRUPT_DEFINITION(TIM6_UPD_OVF_TRG_IRQHandler, 23);
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
// Timer4 Update/Overflow Interrupt
INTERRUPT_DEFINITION(TIM4_UPD_OVF_IRQHandler, 23);
#endif // STM8S903
// Eeprom EEC Interrupt
INTERRUPT_DEFINITION(EEPROM_EEC_IRQHandler, 24);
#endif // __INTERRUPTS_H__

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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 "onewire.h"
volatile unsigned long Global_time = 0L; // global time in ms
U16 paused_val = 500; // interval between LED flashing
volatile U8 waitforread = 0;
// show received scrtchpad
void show_received_data(){
char i;
// uart_write("show_received_data()\n");
for(i = 8; i > -1; i--){
if(i < 8) UART_send_byte(',');
printUHEX(ow_data_array[i]);
}
ow_process_resdata = NULL;
uart_write("\nTemp: ");
print_long(gettemp());
uart_write("dergC\n");
}
// ask to read N bytes after temper request
void send_read_seq(){
// uart_write("send_read_seq()\n");
onewire_receive_bytes(9);
ow_process_resdata = show_received_data;
}
void wait_reading(){
// uart_write("wait_reading()\n");
waitforread = 1;
ow_process_resdata = NULL;
}
int main() {
unsigned long T = 0L;
// int Ival;
U8 rb;
CFG_GCR |= 1; // disable SWIM
// Configure clocking
CLK_CKDIVR = 0; // F_HSI = 16MHz, f_CPU = 16MHz
// Timer 4 (8 bit) used as system tick timer
// prescaler == 128 (2^7), Tfreq = 125kHz
// period = 1ms, so ARR = 125
TIM4_PSCR = 7;
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;
// PC2 - PP output (on-board LED)
PORT(LED_PORT, DDR) |= LED_PIN;
PORT(LED_PORT, CR1) |= LED_PIN;
uart_init();
onewire_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(!OW_CONVERSION_DONE) uart_write("conversion in process\n");
}
process_onewire();
if(UART_read_byte(&rb)){ // buffer isn't empty
switch(rb){
case 'h': // help
case 'H':
uart_write("\nPROTO:\n+/-\tLED period\nS/s\tset/get Mspeed\n"
"r: reset 1-wire\n"
"w: read temper\n");
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 'r':
if(!onewire_reset()) uart_write("not ");
uart_write("found 1-wire devices (echo len: ");
print_long((long)onewire_gotlen);
uart_write(")\n");
break;
case 'w':
if(!onewire_reset()){
uart_write("no devices found!");
break;
}
ow_data_array[0] = OW_CONVERT_T;
ow_data_array[1] = OW_SKIP_ROM;
ow_process_resdata = wait_reading;
onewire_send_bytes(2);
break;
}
}
if(waitforread){
if(OW_CONVERSION_DONE){
if(onewire_reset()){
waitforread = 0;
ow_process_resdata = send_read_seq;
ow_data_array[0] = OW_READ_SCRATCHPAD;
ow_data_array[1] = OW_SKIP_ROM;
onewire_send_bytes(2);
}else uart_write("error reseting!");
}
}
}while(1);
}

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/*
* onewire.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 "onewire.h"
#include "ports_definition.h"
#include "uart.h"
// mode of 1-wire
volatile OW_modes ow_mode = OW_MODE_OFF;
// length of zero-pulse (TIM2_CCR1)
volatile U16 onewire_gotlen = 0;
volatile U8 is_receiver = 0;
volatile U8 ow_data;
// remaining ticks counter
volatile U8 onewire_tick_ctr;
// array for sending/receiving data
// DATA STORED IN REVERCE ORDER! FIRST BYTE ID ow_data_array[N] AND LAST IS ow_data_array[0]!!!
U8 ow_data_array[10];
// how much bytes to send/receive
U8 ow_byte_ctr;
// this function will be called after receiving/transmitting of N bytes
// inside this function should be: ow_process_resdata = NULL;
void (*ow_process_resdata)() = NULL;
/*
********************* Timer2 ********************
* prescaler: TIM2_PSCR f = f_{in}/2^{TIM2_PSCR}
* other registers:
* TIM2_CR1 (page 223): | ARPE | reserved[2:0] | OPM | URS | UDIS | CEN |
* ARPE - Auto-reload preload enable (for TIM2_ARR)
* OPM: One-pulse mode (not implemented!)
* URS: Update request source (When enabled by the UDIS bit, 1 - interrupt only on counter overflow/underflow)
* UDIS: Update disable (1 - disable update int)
* CEN: Counter enable (1 - enable)
* TIM2_IER (page 226): | res | TIE | res | res | CC3IE | CC2IE | CC1IE | UIE |
* T - trigger; CC - comp/capt; U - update <--
* TIM2_SR1 (page 227): similar (but instead of IE -> IF)
* interrupt flags
* TIM2_SR2 (page 228): overcapture flags
* TIM2_EGR (page 229): event generation
* TIM2_CCMR1 (page 230):
* OUTPUT: | res | OC1M[2:0] | OC1PE | res | CC1S[1:0] |
* INPUT: | IC1F[3:0] | IC1PSC[1:0] | CC1S[1:0] |
* OC1M: compare mode !!! writeable only when channel is off (CC1E=0) !!!
* 000: no
* 001: set channel 1 to active level on match
* 010: set chan1 to inactive ...
* 011: toggle
* 100: force 0
* 101: force 1
* 110: PWM mode 1 (1->0)
* 111: PWM mode 2 (0->1)
* OC1PE: output compare 1 preload enable (0 - loads immediately)
* CC1S: comp/capt selection
* 00: CC1 is out
* 01: CC1 is in (TI1FP1)
* 10: TI2FP1
* 11: (only for TIM5)
* IC1F: input capture filter (0 - no filter)
* IC1PSC: capture prescaler (0 - no, xx - 2^{xx} events)
* TIM2_CCMRx - the same for channels 2 & 3
* TIM2_CCERx - CC polarity/enable (lowest 2 bytes in each 4): P=1:active high/capture on rising edge;
* TIM2_CNTRH, TIM2_CNTRL - counter value (automatical)
* TIM2_PSCR - prescaler value, lower 4 bits
* TIM1_ARRH, TIM1_ARRL - auto-reload value (while zero, timer is stopped) (page 206)
* TIM2_CCRxL/H - compare/capture registers
*/
void onewire_setup(){
// freq = 1MHz: psc=16 -> TIM2_PSCR = 4
TIM2_PSCR = 4;
// AIN: PD3 / TIM2_CH2 -> CC1 will be input on TI2FP1 & CC2 will be output
// configure pin CC2 (PD3): open-drain output
PORT(PD, DDR) |= GPIO_PIN3; // output & pseudo open-drain
PORT(PD, CR2) |= GPIO_PIN3; // fast
// out: PWM mode 1 (active -> inactive), preload enable
// CCMR2: | 0 | 110 | 1 | 0 | 00 |
TIM2_CCMR2 = 0x68;
// in: TI2FP1
TIM2_CCMR1 = 0x02;
// polarity: out - active LOW, in - capture on rising edge, enable
TIM2_CCER1 = 0x31;
// interrupts: CC1IE
TIM2_IER = TIM_IER_CC1IE;
// enable preload for registers to refresh their values only by UEV
TIM2_CR1 = TIM_CR1_APRE | TIM_CR1_URS;
// ARR values: 1000 for reset, 70 for data in/out
// CCR2 values: 500 for reset, 60 for sending 0 or reading, <15 for sending 1
// CCR1 values: >550 if there's devices on line (on reset), >12 (typ.15) - read 0, < 12 (typ.1) - read 1
// WARN! on reset there would be two CC events generated
}
/**
* reset 1-wire bus
* return 0 if no devices found, else return 1
*/
U8 onewire_reset(){
is_receiver = 0; // send data, not receive
onewire_tick_ctr = 1; // if there's devices on the bus CC1 int would be generated twice!
TIM2REG(ARR, RESET_LEN);
TIM2REG(CCR2, RESET_P);
//TIM2_CCR1H = TIM2_CCR1L = 0;
TIM2_EGR = TIM_EGR_UG; // generate UEV to update values
TIM2_CR1 |= TIM_CR1_CEN; // turn on timer
ow_mode = OW_MODE_RESET;
while(OW_BUSY); // wait until transmission is over
return ((onewire_gotlen > RESET_BARRIER) ? 1 : 0);
}
/**
* Send one byte through 1-wire
*/
void onewire_send_byte(U8 byte){
ow_data = byte;
is_receiver = 0;
onewire_tick_ctr = 7; // 7 bits remain
TIM2REG(ARR, BIT_LEN);
if(ow_data & 1){ // transmit 1
TIM2REG(CCR2, BIT_ONE_P);
}else{ // transmit 0
TIM2REG(CCR2, BIT_ZERO_P);
}
TIM2_EGR = TIM_EGR_UG; // generate UEV to update values
ow_data >>= 1;
TIM2_CR1 |= TIM_CR1_CEN; // turn on timer
}
/**
* get 1 byte through 1-wire
*/
void onewire_wait_for_receive(){
ow_data = 0;
is_receiver = 1;
onewire_tick_ctr = 8; // eight bits remain!
TIM2REG(ARR, BIT_LEN);
TIM2REG(CCR2, BIT_READ_P); // reading length
TIM2_EGR = TIM_EGR_UG; // generate UEV to update values
TIM2_CR1 |= TIM_CR1_CEN; // turn on timer
}
// DATA STORED IN REVERCE ORDER! FIRST BYTE ID ow_data_array[N] AND LAST IS ow_data_array[0]!!!
/**
* wait for receiveing N bytes from 1-wire
* N shoud be not great than 10
*/
void onewire_receive_bytes(U8 N){
ow_byte_ctr = N;
ow_mode = OW_MODE_RECEIVE_N;
onewire_wait_for_receive();
}
void onewire_send_bytes(U8 N){
ow_byte_ctr = N;
ow_mode = OW_MODE_TRANSMIT_N; // first data portion will be send by process_onewire
}
/**
* process 1-wire events
*/
void process_onewire(){
if(OW_BUSY || !OW_CONVERSION_DONE) return; // let data to be processed
switch(ow_mode){
case OW_MODE_RECEIVE_N: // wait for receiving of N bytes -> send next byte
uart_write("receive ");
printUHEX(ow_data);
UART_send_byte(' ');
printUHEX(onewire_gotlen);
UART_send_byte('\n');
ow_data_array[--ow_byte_ctr] = ow_data;
if(ow_byte_ctr){ // there's some more data to receive
onewire_wait_for_receive(); // wait for another byte
return;
}
// we have received all data - process it!
ow_mode = OW_MODE_OFF;
if(ow_process_resdata){
ow_process_resdata();
}
break;
case OW_MODE_TRANSMIT_N:
uart_write("transmit ");
if(ow_byte_ctr){ // we have some more data to transmit
printUHEX(ow_data_array[ow_byte_ctr-1]);
UART_send_byte('\n');
onewire_send_byte(ow_data_array[--ow_byte_ctr]);
return;
}
ow_mode = OW_MODE_OFF;
uart_write("is over\n");
if(ow_process_resdata){
ow_process_resdata();
}
break;
case OW_MODE_RESET:
uart_write("reset done!\n");
ow_mode = OW_MODE_OFF;
break;
default: // OW_MODE_OFF
return;
}
}
/**
* convert temperature from ow_data_array (scratchpad)
* in case of error return 200000
* return value in 1000th degrees centigrade
* don't forget that bytes in ow_data_array have reverce order!!!
* so:
* 8 - themperature LSB
* 7 - themperature MSB (all higher bits are sign)
* 6 - T_H
* 5 - T_L
* 4 - B20: Configuration register (only bits 6/5 valid: 9..12 bits resolution); 0xff for S20
* 3 - 0xff (reserved)
* 2 - (reserved for B20); S20: COUNT_REMAIN (0x0c)
* 1 - COUNT PER DEGR (0x10)
* 0 - CRC
*/
long gettemp(){
// detect DS18S20
long t;
U8 l,m;
char v;
if(ow_data_array[4] == 0xff){ // DS18S20
;
}
else{
m = ow_data_array[7];
l = ow_data_array[8];
v = l>>4 | ((m & 7)<<4);
if(m&0x80){ // minus
v |= 0x80;
}
t = ((long)v) * 1000 + ((long)l&0x0f)*125;
}
return t;
}

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/*
* onewire.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 __ONEWIRE_H__
#define __ONEWIRE_H__
#include "stm8l.h"
#define TIM2REGH(reg) TIM2_##reg##H
#define TIM2REGL(reg) TIM2_##reg##L
#define TIM2REG(reg, val) do{TIM2REGH(reg) = val >> 8; TIM2REGL(reg) = val & 0xff;}while(0)
// ARR values: 1000 for reset, 100 for data in/out
// CCR2 values: 500 for reset, 60 for sending 0 or reading, <15 for sending 1
// CCR1 values: >550 if there's devices on line (on reset), >12 (typ.15) - read 0, < 12 (typ.1) - read 1
#define RESET_LEN ((U16)1000)
#define BIT_LEN ((U16)100)
#define RESET_P ((U16)500)
#define BIT_ONE_P ((U16)10)
#define BIT_ZERO_P ((U16)60)
#define BIT_READ_P ((U16)5)
#define RESET_BARRIER ((U16)550)
#define ONE_ZERO_BARRIER ((U16)10)
#define OW_CONVERSION_DONE ((PORT(PD,IDR) & GPIO_PIN3))
#define OW_BUSY ((TIM2_CR1 & TIM_CR1_CEN))
/*
* thermometer commands
* send them with bus reset!
*/
// find devices
#define OW_SEARCH_ROM (0xf0)
// read device (when it is alone on the bus)
#define OW_READ_ROM (0x33)
// send device ID (after this command - 8 bytes of ID)
#define OW_MATCH_ROM (0x55)
// broadcast command
#define OW_SKIP_ROM (0xcc)
// find devices with critical conditions
#define OW_ALARM_SEARCH (0xec)
/*
* thermometer functions
* send them without bus reset!
*/
// start themperature reading
#define OW_CONVERT_T (0x44)
// write critical temperature to device's RAM
#define OW_SCRATCHPAD (0x4e)
// read whole device flash
#define OW_READ_SCRATCHPAD (0xbe)
// copy critical themperature from device's RAM to its EEPROM
#define OW_COPY_SCRATCHPAD (0x48)
// copy critical themperature from EEPROM to RAM (when power on this operation runs automatically)
#define OW_RECALL_E2 (0xb8)
// check whether there is devices wich power up from bus
#define OW_READ_POWER_SUPPLY (0xb4)
/*
* RAM register:
* 0 - themperature LSB
* 1 - themperature MSB (all higher bits are sign)
* 2 - T_H
* 3 - T_L
* 4 - B20: Configuration register (only bits 6/5 valid: 9..12 bits resolution); 0xff for S20
* 5 - 0xff (reserved)
* 6 - (reserved for B20); S20: COUNT_REMAIN (0x0c)
* 7 - COUNT PER DEGR (0x10)
* 8 - CRC
*
* To identify S20/B20 use value of confuguration register: its MSbit is 0
*/
typedef enum{
OW_MODE_OFF, // sleeping
OW_MODE_TRANSMIT_N, // transmit N bytes
OW_MODE_RECEIVE_N, // receive N bytes
OW_MODE_RESET // reset bus
} OW_modes;
extern volatile U8 ow_data; // byte to send/receive
extern volatile U8 onewire_tick_ctr; // tick counter
extern volatile U8 is_receiver;
extern volatile U16 onewire_gotlen; // last captured value
extern U8 ow_data_array[];
extern U8 ow_byte_ctr;
extern volatile OW_modes ow_mode;
extern void (*ow_process_resdata)();
void onewire_setup();
U8 onewire_reset();
void onewire_send_byte(U8 byte);
void onewire_wait_for_receive();
void process_onewire();
void onewire_receive_bytes(U8 N);
void onewire_send_bytes(U8 N);
long gettemp();
#endif // __ONEWIRE_H__

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/*
* 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
#endif // __PORTS_DEFINITION_H__

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16
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@ -0,0 +1,16 @@
0x98,0x01,0x4b,0x46,0x7f,0xff,0x08,0x10,0x22
LSB: 10011000 = 152
MSB: 00000001 = 1
temperature = 11001 + 1/2 = 25.5
TH: 01001011 = 75
TL: 01000110 = 70
conf: 01111111 = 127
res: 0xff - OK
res: 1000 - 8
res: 0x10 - OK
CRC: 100010 = 34

169
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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 "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
}

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/*
* 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__

34
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NAME=testproj
SDCC=sdcc
CCFLAGS=-DSTM8S003 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx
LDFLAGS=-mstm8 --out-fmt-ihx -lstm8
FLASHFLAGS=-cstlinkv2 -pstm8s003
SRC=$(wildcard *.c)
# ATTENTION: FIRST in list should be file with main()
OBJ=$(SRC:%.c=%.rel)
TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
TRASH+=$(SRC:%.c=%.sym) $(NAME).lk $(NAME).map
INDEPENDENT_HEADERS=../stm8l.h Makefile
all: $(NAME).ihx
$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
@touch $@
%.h: ;
clean:
rm -f $(TRASH)
load: $(NAME).ihx
stm8flash $(FLASHFLAGS) -w $(NAME).ihx
%.rel: %.c
$(SDCC) $(CCFLAGS) -c $<
$(NAME).ihx: $(OBJ)
$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
.PHONY: all

156
voltmeters/src/3-digit/interrupts.c Normal file
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/*
* interrupts.c
*
* Copyright 2015 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 "stm8l.h"
#include "interrupts.h"
U8 ADC_ready = 0; // flag: data ready
int ADC_value = 0;// value of last ADC measurement
// Top Level Interrupt
INTERRUPT_HANDLER(TLI_IRQHandler, 0){}
// Auto Wake Up Interrupt
INTERRUPT_HANDLER(AWU_IRQHandler, 1){}
// Clock Controller Interrupt
INTERRUPT_HANDLER(CLK_IRQHandler, 2){}
// External Interrupt PORTA
INTERRUPT_HANDLER(EXTI_PORTA_IRQHandler, 3){}
// External Interrupt PORTB
INTERRUPT_HANDLER(EXTI_PORTB_IRQHandler, 4){}
// External Interrupt PORTC
INTERRUPT_HANDLER(EXTI_PORTC_IRQHandler, 5){}
// External Interrupt PORTD
INTERRUPT_HANDLER(EXTI_PORTD_IRQHandler, 6){}
// External Interrupt PORTE
INTERRUPT_HANDLER(EXTI_PORTE_IRQHandler, 7){}
#ifdef STM8S903
// External Interrupt PORTF
INTERRUPT_HANDLER(EXTI_PORTF_IRQHandler, 8){}
#endif // STM8S903
#if defined (STM8S208) || defined (STM8AF52Ax)
// CAN RX Interrupt routine.
INTERRUPT_HANDLER(CAN_RX_IRQHandler, 8){}
// CAN TX Interrupt routine.
INTERRUPT_HANDLER(CAN_TX_IRQHandler, 9){}
#endif // STM8S208 || STM8AF52Ax
// SPI Interrupt routine.
INTERRUPT_HANDLER(SPI_IRQHandler, 10){}
// Timer1 Update/Overflow/Trigger/Break Interrupt
INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11){
if(TIM1_SR1 & TIM_SR1_UIF){ // update interrupt
Global_time++; // increase timer
}
TIM1_SR1 = 0; // clear all interrupt flags
}
// Timer1 Capture/Compare Interrupt routine.
INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12){}
#ifdef STM8S903
// Timer5 Update/Overflow/Break/Trigger Interrupt
INTERRUPT_HANDLER(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13){}
// Timer5 Capture/Compare Interrupt
INTERRUPT_HANDLER(TIM5_CAP_COM_IRQHandler, 14){}
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
// Timer2 Update/Overflow/Break Interrupt
INTERRUPT_HANDLER(TIM2_UPD_OVF_BRK_IRQHandler, 13){}
// Timer2 Capture/Compare Interrupt
// process soft I2C
INTERRUPT_HANDLER(TIM2_CAP_COM_IRQHandler, 14){
}
#endif // STM8S903
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
defined(STM8S005) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
// Timer3 Update/Overflow/Break Interrupt
INTERRUPT_HANDLER(TIM3_UPD_OVF_BRK_IRQHandler, 15){}
// Timer3 Capture/Compare Interrupt
INTERRUPT_HANDLER(TIM3_CAP_COM_IRQHandler, 16){}
#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
defined(STM8S003) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
// UART1 TX Interrupt
INTERRUPT_HANDLER(UART1_TX_IRQHandler, 17){}
// UART1 RX Interrupt
INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18){}
#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
// I2C Interrupt
INTERRUPT_HANDLER(I2C_IRQHandler, 19){}
#if defined(STM8S105) || defined(STM8S005) || defined (STM8AF626x)
// UART2 TX interrupt
INTERRUPT_HANDLER(UART2_TX_IRQHandler, 20){}
// UART2 RX interrupt
INTERRUPT_HANDLER(UART2_RX_IRQHandler, 21){}
#endif // STM8S105 or STM8AF626x
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// UART3 TX interrupt
INTERRUPT_HANDLER(UART3_TX_IRQHandler, 20){}
// UART3 RX interrupt
INTERRUPT_HANDLER(UART3_RX_IRQHandler, 21){}
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// ADC2 interrupt
INTERRUPT_HANDLER(ADC2_IRQHandler, 22){}
#else
// ADC1 interrupt
INTERRUPT_HANDLER(ADC1_IRQHandler, 22){
ADC_value = ADC_DRL; // in right-alignment mode we should first read LSB
ADC_value |= ADC_DRH << 8;
ADC_ready = 1;
ADC_CSR &= 0x3f; // clear EOC & AWD flags
}
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#ifdef STM8S903
// Timer6 Update/Overflow/Trigger Interrupt
INTERRUPT_HANDLER(TIM6_UPD_OVF_TRG_IRQHandler, 23){}
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
// Timer4 Update/Overflow Interrupt
INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23){}
#endif // STM8S903
// Eeprom EEC Interrupt
INTERRUPT_HANDLER(EEPROM_EEC_IRQHandler, 24){}

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/*
* interrupts.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 __INTERRUPTS_H__
#define __INTERRUPTS_H__
#include "stm8l.h"
extern U8 ADC_ready; // flag: data ready
extern U32 Global_time; // global time in ms
extern int ADC_value; // value of last ADC measurement
// Top Level Interrupt
INTERRUPT_DEFINITION(TLI_IRQHandler, 0);
// Auto Wake Up Interrupt
INTERRUPT_DEFINITION(AWU_IRQHandler, 1);
// Clock Controller Interrupt
INTERRUPT_DEFINITION(CLK_IRQHandler, 2);
// External Interrupt PORTA
INTERRUPT_DEFINITION(EXTI_PORTA_IRQHandler, 3);
// External Interrupt PORTB
INTERRUPT_DEFINITION(EXTI_PORTB_IRQHandler, 4);
// External Interrupt PORTC
INTERRUPT_DEFINITION(EXTI_PORTC_IRQHandler, 5);
// External Interrupt PORTD
INTERRUPT_DEFINITION(EXTI_PORTD_IRQHandler, 6);
// External Interrupt PORTE
INTERRUPT_DEFINITION(EXTI_PORTE_IRQHandler, 7);
#ifdef STM8S903
// External Interrupt PORTF
INTERRUPT_DEFINITION(EXTI_PORTF_IRQHandler, 8);
#endif // STM8S903
#if defined (STM8S208) || defined (STM8AF52Ax)
// CAN RX Interrupt routine.
INTERRUPT_DEFINITION(CAN_RX_IRQHandler, 8);
// CAN TX Interrupt routine.
INTERRUPT_DEFINITION(CAN_TX_IRQHandler, 9);
#endif // STM8S208 || STM8AF52Ax
// SPI Interrupt routine.
INTERRUPT_DEFINITION(SPI_IRQHandler, 10);
// Timer1 Update/Overflow/Trigger/Break Interrupt
INTERRUPT_DEFINITION(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11);
// Timer1 Capture/Compare Interrupt routine.
INTERRUPT_DEFINITION(TIM1_CAP_COM_IRQHandler, 12);
#ifdef STM8S903
// Timer5 Update/Overflow/Break/Trigger Interrupt
INTERRUPT_DEFINITION(TIM5_UPD_OVF_BRK_TRG_IRQHandler, 13);
// Timer5 Capture/Compare Interrupt
INTERRUPT_DEFINITION(TIM5_CAP_COM_IRQHandler, 14);
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
// Timer2 Update/Overflow/Break Interrupt
INTERRUPT_DEFINITION(TIM2_UPD_OVF_BRK_IRQHandler, 13);
// Timer2 Capture/Compare Interrupt
INTERRUPT_DEFINITION(TIM2_CAP_COM_IRQHandler, 14);
#endif // STM8S903
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S105) || \
defined(STM8S005) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8AF626x)
// Timer3 Update/Overflow/Break Interrupt
INTERRUPT_DEFINITION(TIM3_UPD_OVF_BRK_IRQHandler, 15);
// Timer3 Capture/Compare Interrupt
INTERRUPT_DEFINITION(TIM3_CAP_COM_IRQHandler, 16);
#endif // STM8S208, STM8S207 or STM8S105 or STM8AF62Ax or STM8AF52Ax or STM8AF626x
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined(STM8S103) || \
defined(STM8S003) || defined (STM8AF62Ax) || defined (STM8AF52Ax) || defined (STM8S903)
// UART1 TX Interrupt
INTERRUPT_DEFINITION(UART1_TX_IRQHandler, 17);
// UART1 RX Interrupt
INTERRUPT_DEFINITION(UART1_RX_IRQHandler, 18);
#endif // STM8S208 or STM8S207 or STM8S103 or STM8S903 or STM8AF62Ax or STM8AF52Ax
// I2C Interrupt
INTERRUPT_DEFINITION(I2C_IRQHandler, 19);
#if defined(STM8S105) || defined(STM8S005) || defined (STM8AF626x)
// UART2 TX interrupt
INTERRUPT_DEFINITION(UART2_TX_IRQHandler, 20);
// UART2 RX interrupt
INTERRUPT_DEFINITION(UART2_RX_IRQHandler, 21);
#endif // STM8S105 or STM8AF626x
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// UART3 TX interrupt
INTERRUPT_DEFINITION(UART3_TX_IRQHandler, 20);
// UART3 RX interrupt
INTERRUPT_DEFINITION(UART3_RX_IRQHandler, 21);
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#if defined(STM8S207) || defined(STM8S007) || defined(STM8S208) || defined (STM8AF52Ax) || defined (STM8AF62Ax)
// ADC2 interrupt
INTERRUPT_DEFINITION(ADC2_IRQHandler, 22);
#else // STM8S105, STM8S103 or STM8S903 or STM8AF626x
// ADC1 interrupt
INTERRUPT_DEFINITION(ADC1_IRQHandler, 22);
#endif // STM8S208 or STM8S207 or STM8AF52Ax or STM8AF62Ax
#ifdef STM8S903
// Timer6 Update/Overflow/Trigger Interrupt
INTERRUPT_DEFINITION(TIM6_UPD_OVF_TRG_IRQHandler, 23);
#else // STM8S208, STM8S207, STM8S105 or STM8S103 or STM8AF52Ax or STM8AF62Ax or STM8AF626x
// Timer4 Update/Overflow Interrupt
INTERRUPT_DEFINITION(TIM4_UPD_OVF_IRQHandler, 23);
#endif // STM8S903
// Eeprom EEC Interrupt
INTERRUPT_DEFINITION(EEPROM_EEC_IRQHandler, 24);
#endif // __INTERRUPTS_H__

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/*
* led.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 "stm8l.h"
#include "led.h"
/*
* bits no 7 6 5 4 3 2 1 0
* dec value 128 64 32 16 8 4 2 1
*/
/********** current variant **********/
/*
* One digit: TABLE:
* ***A*** 0 1 2 3 4 5 6 7 8 9 A B C D E F - h
* * * (F) PB4 0 1 1 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0
* F B (B) PB5 0 0 0 0 0 1 1 0 0 0 0 1 1 0 1 1 1 1
* * * (A) PC3 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 1 1
* ***G*** (G) PC7 1 1 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0
* * * (C) PD1 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 1 1 0
* E C (DP)PC6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
* * * ** (D) PC5 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 1 1 1
* ***D*** *DP* (E) PC4 0 1 0 1 1 1 0 1 0 1 0 0 0 0 0 0 1 0
* **
*/
/*
* Number of digit on indicator with common anode
* digis 0..2: PA3, PD4, PD5
*/
#define CLEAR_ANODES() do{PD_ODR &= ~(0x30);PA_ODR &= ~(0x08);}while(0)
/************* arrays for ports *************/
// PB, mask: 0x30, PB4:0x10=16, PB5:0x20=32
#define PB_BLANK 0x30
static U8 PB_bits[18] = {0,16,16,16,0,32,32,16,0,0,0,32,32,16,32,32,48,32};
// PC, mask: 0xF8, PC3:0x08=8, PC4:0x10=16, PC5:0x20=32, PC6:0x40=64, PC7:0x80=128
#define PC_BLANK 0xF8
static U8 PC_bits[18] = {128,184,0,16,56,16,0,176,0,16,32,8,128,8,0,32,56,40};
// PD, mask: 0x02, PD1
static U8 PD_bits[18] = {0,0,2,0,0,0,0,0,0,0,0,0,2,0,2,2,2,0};
#define PD_BLANK 0x02
/**
* Setup for writing a letter
* @param ltr - letter (0..17 for 0..F, - or h | 0x80 for DP, any other value for 'space')
*/
void write_letter(U8 ltr){
U8 L = ltr & 0x7f;
// first turn all off
CLEAR_ANODES();
// light up all segments
PB_ODR &= ~PB_BLANK;
PC_ODR &= ~PC_BLANK;
PD_ODR &= ~PD_BLANK;
// now clear spare segments
if(L < 18){ // letter
PB_ODR |= PB_bits[L];
PC_ODR |= PC_bits[L];
PD_ODR |= PD_bits[L];
}else{ // space - turn all OFF
PB_ODR |= PB_BLANK;
PC_ODR |= PC_BLANK;
PD_ODR |= PD_BLANK;
}
if(ltr & 0x80){ // DP
PC_ODR &= ~GPIO_PIN6;
}
}
/**
* Turn on anode power for digit N (0..3: PA3, PD6, PD4, PD1 -- A0x08, D0x40, D0x10, D0x02)
* @param N - number of digit (0..3), if other - no action (display off)
* @return
*/
void light_up_digit(U8 N){
switch(N){
case 0:
PA_ODR |= 0x08;
break;
case 1:
PD_ODR |= 0x40;
break;
case 2:
PD_ODR |= 0x10;
break;
case 3:
PD_ODR |= 0x02;
break;
}
}
static U8 display_buffer[4] = {' ',' ',' ',' '}; // blank by default
static U8 N_current = 0; // current digit to display
/**
* fills buffer to display
* @param str - string to display, contains "0..f" for digits, " " for space, "." for DP
* for example: " 1.22" or "h1ab" (something like "0...abc" equivalent to "0.abc"
* register independent!
* any other letter would be omitted
* if NULL - fill buffer with spaces
*/
void set_display_buf(char *str){
U8 B[3];
char ch, M = 0, i;
N_current = 0; // refresh current digit number
// empty buffer
for(i = 0; i < 3; i++)
display_buffer[i] = ' ';
if(!str) return;
i = 0;
for(;(ch = *str) && (i < 3); str++){
M = 0;
if(ch > '/' && ch < ':'){ // digit
M = '0';
}else if(ch > '`' & ch < 'g'){ // a..f
M = 'a' - 10;
}else if(ch > '@' & ch < 'G'){ // A..F
M = 'A' - 10;
}else if(ch == '-'){ // minus
M = '-' - 16;
}else if(ch == 'h'){ // hex
M = 'h' - 17;
}else if(ch == 'H'){ // hex
M = 'H' - 17;
}else if(ch == '.'){ // DP, set it to previous char
if(i == 0){ // word starts from '.' - make a space with point
B[0] = 0xff;
}else{ // set point for previous character
B[i-1] |= 0x80;
}
continue;
}else if(ch != ' '){ // bad character - continue
continue;
}
B[i] = ch - M;
i++;
}
// now make align to right
ch = 2;
for(M = i-1; M > -1; M--, ch--){
display_buffer[ch] = B[M];
}
}
/**
* Show Nth digit of buffer (function ran by timer)
* @param N - number of digit in buffer (0..3)
*/
void show_buf_digit(U8 N){
if(N > 2) return;
write_letter(display_buffer[N]);
light_up_digit(N);
}
/**
* Show next digit - function calls from main() by some system time value amount
*/
void show_next_digit(){
show_buf_digit(N_current++);
if(N_current > 2) N_current = 0;
}
/**
* Turn off current digit: to change display brightness
*/
void lights_off(){
U8 N;
if(N_current) N = N_current - 1;
else N = 2;
light_up_digit(N);
}
/**
* convert integer value i into string and display it
* @param i - value to display, -999 <= i <= 9999, if wrong, displays "---E"
*/
void display_int(int I, char voltmeter){
int rem;
U8 pos = 0; //DP position
char N = 2, sign = 0, i;
if(I < -999 || I > 9999){
set_display_buf("--E");
return;
}
// prepare buffer for voltmeter's values
if(voltmeter){
for(i = 0; i < 3; i++)
display_buffer[i] = 0;
if(I>999){
I /= 10;
pos = 1; // DP is in 2nd position - voltage more than 9.99V
}
}else{
for(i = 0; i < 3; i++)
display_buffer[i] = ' ';
}
if(I == 0){ // just show zero
display_buffer[3] = 0;
return;
}
if(I < 0){
sign = 1;
I *= -1;
}
do{
rem = I % 10;
display_buffer[N] = rem;
I /= 10;
}while(--N > -1 && I);
if(sign && N > -1) display_buffer[N] = 16; // minus sign
if(voltmeter) display_buffer[pos] |= 0x80;
}
/**
* displays digital point at position i
* @param i - position to display DP, concequent calls can light up many DPs
*/
void display_DP_at_pos(U8 i){
if(i > 2) return;
display_buffer[i] |= 0x80;
}

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/*
* led.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 __LED_H__
#define __LED_H__
#include "stm8l.h"
void set_display_buf(char *str);
void show_buf_digit(U8 N);
void show_next_digit();
void lights_off();
void display_int(int i, char voltmeter);
void display_DP_at_pos(U8 i);
/**
* Initialize ports
* PA1|3, PB4|5, PC3|4|5|6|7, PD1|4|6
*/
#define LED_init() do{ \
PA_DDR = 0x0a; PB_DDR = 0x30; PC_DDR = 0xf8; PD_DDR = 0x52; \
PA_CR1 = 0x0a; PB_CR1 = 0x30; PC_CR1 = 0xf8; PD_CR1 = 0x52; \
}while(0)
#endif // __LED_H__

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/*
* main.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 "main.h"
#include "interrupts.h"
#include "led.h"
int temp;
#define PIX_SORT(a,b) { if ((a)>(b)) PIX_SWAP((a),(b)); }
#define PIX_SWAP(a,b) { temp=(a);(a)=(b);(b)=temp; }
int p[9]; // buffer for median filtering
int opt_med9(){
PIX_SORT(p[1], p[2]) ; PIX_SORT(p[4], p[5]) ; PIX_SORT(p[7], p[8]) ;
PIX_SORT(p[0], p[1]) ; PIX_SORT(p[3], p[4]) ; PIX_SORT(p[6], p[7]) ;
PIX_SORT(p[1], p[2]) ; PIX_SORT(p[4], p[5]) ; PIX_SORT(p[7], p[8]) ;
PIX_SORT(p[0], p[3]) ; PIX_SORT(p[5], p[8]) ; PIX_SORT(p[4], p[7]) ;
PIX_SORT(p[3], p[6]) ; PIX_SORT(p[1], p[4]) ; PIX_SORT(p[2], p[5]) ;
PIX_SORT(p[4], p[7]) ; PIX_SORT(p[4], p[2]) ; PIX_SORT(p[6], p[4]) ;
PIX_SORT(p[4], p[2]) ; return(p[4]) ;
}
U32 Global_time = 0L; // global time in ms
//eeprom_data *saved_data = (eeprom_data*)EEPROM_START_ADDR;
//U32 testtimer;
// one digit emitting time
#define LED_delay 1
/*
U8 change_eeprom_value(U8 *addr, U8 *val, U8 len){
U8 i;
// unlock memory
FLASH_DUKR = EEPROM_KEY1;
FLASH_DUKR = EEPROM_KEY2;
// check bit DUL=1 in FLASH_IAPSR
if(!(FLASH_IAPSR & 0x08))
return 0;
for(i = 0; i < len; i++)
*addr = val[i];
while(!(FLASH_IAPSR & 0x04)); // wait till end
// clear DUL to lock write
FLASH_IAPSR &= ~0x08;
return 1;
}
void eeprom_default_setup(){
eeprom_data template = {
.magick = EEPROM_MAGICK,
.ADU_to_mV = DEFAULT_ADU_TO_MV,
.max_ADU = DEFAULT_MAX_ADU
};
if(saved_data->magick != EEPROM_MAGICK){
if(change_eeprom_value((U8*)saved_data, (U8*)&template, sizeof(eeprom_data)))
testtimer = saved_data->ADU_to_mV;
else
testtimer = 999;
}else{
testtimer = 0; // other times - from zero
}
}
*/
int main() {
U32 T_LED = 0L; // time of last digit update
U32 T_time = 0L; // timer
int U = 0;
U8 vcap = 0; // ADC selection: 1 - vcap, 0 - ain
int pidx = 0; // index in median buffer
long voltagein = 0L, voltagecap = 0L; // variables for average values: vin and vcap
long cntrin = 0, cntrcap = 0; // counters for average
// Configure clocking
CLK_CKDIVR = 0; // F_HSI = 16MHz, f_CPU = 16MHz
// Configure pins
CFG_GCR |= 1; // disable SWIM
LED_init();
CCR |= 0x28; // make shure that we are on level 3 - disabled SW priority
// Configure Timer1
// prescaler = f_{in}/f_{tim1} - 1
// set Timer1 to 1MHz: 16/1 - 1 = 15
TIM1_PSCRH = 0;
TIM1_PSCRL = 15; // LSB should be written last as it updates prescaler
// auto-reload each 1ms: TIM_ARR = 1000 = 0x03E8
TIM1_ARRH = 0x03;
TIM1_ARRL = 0xE8;
// interrupts: update
TIM1_IER = TIM_IER_UIE;
// auto-reload + interrupt on overflow + enable
TIM1_CR1 = TIM_CR1_APRE | TIM_CR1_URS | TIM_CR1_CEN;
//eeprom_default_setup();
// configure ADC
// select PD3[AIN4] - AIN .. PD6[AIN6] - Vcap & enable interrupt for EOC
ADC_CSR = 0x24; // 0x24 - AIN4, 0x26 - AIN6
ADC_TDRL = 0x50; // disable Schmitt triger for AIN4 & AIN6
// right alignment
ADC_CR2 = 0x08; // don't forget: first read ADC_DRL!
// f_{ADC} = f/18 & continuous non-buffered conversion & wake it up
ADC_CR1 = 0x73; // 0x71 - single, 0x73 - continuous
ADC_CR1 = 0x73; // turn on ADC (this needs second write operation)
// enable all interrupts
enableInterrupts();
set_display_buf(" E0 "); // low power -> infinitive rebooting
// Loop
do {
// onse per 300ms refresh displayed value
if(((unsigned int)(Global_time - T_time) > 300) || (T_time > Global_time)){
T_time = Global_time;
voltagein /= cntrin; // average
voltagecap /= cntrcap;
// voltage = 1800 * ADUin / ADUcap
voltagein *= 1800;
U = (int)(voltagein/voltagecap);
display_int(U, 1);
cntrin = 0;
cntrcap = 0;
voltagein = 0L;
voltagecap = 0L;
pidx = 0;
}
if((U8)(Global_time - T_LED) > LED_delay){
if(ADC_ready){
// prepare data for rounded output
p[pidx] = ADC_value;
if(++pidx == 9){ // buffer is ready
if(vcap){
voltagecap += (long)(opt_med9());
cntrcap++;
ADC_CSR = 0x24; // switch to ain
vcap = 0;
}else{
voltagein += (long)(opt_med9());
cntrin++;
ADC_CSR = 0x26; // switch to vcap
vcap = 1;
}
pidx = 0;
}
ADC_ready = 0;
}
T_LED = Global_time;
show_next_digit();
}
} while(1);
}

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/*
* main.h
*
* Copyright 2015 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__
#include "stm8l.h"
/*
#define EEPROM_MAGICK (0x1234)
#define DEFAULT_ADU_TO_MV (35840)
#define DEFAULT_MAX_ADU (119800)
typedef struct{
U16 magick;
U32 ADU_to_mV;
U32 max_ADU;
}eeprom_data;
*/
#define CONCAT(a,b) a##_##b
#define PORT(a,b) CONCAT(a,b)
#endif // __MAIN_H__

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:208BE900002F040F052004A6016B050D0527051E0B5020021E0B1F011E0DA300002F040FB8
:208C0900062004A6016B060D0627107B0E406B044F120D6B03160317072004160D170716F9
:0F8C2900071E01657B0518064D2701505B08816A
:00000001FF

15
voltmeters/src/4-digit/Makefile
View File

@ -1,31 +1,29 @@
NAME=testproj
SDCC=sdcc
HEX2BIN=hex2bin
CCFLAGS=-DSTM8S003 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx
LDFLAGS= -lstm8 -mstm8 --out-fmt-ihx
LDFLAGS=-mstm8 --out-fmt-ihx -lstm8
FLASHFLAGS=-cstlinkv2 -pstm8s003
SRC=$(wildcard *.c)
# ATTENTION: FIRST in list should be file with main()
OBJ=$(SRC:%.c=%.rel)
TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
TRASH+=$(SRC:%.c=%.sym) $(NAME).ihx $(NAME).lk $(NAME).map
TRASH+=$(SRC:%.c=%.sym) $(NAME).lk $(NAME).map
INDEPENDENT_HEADERS=../stm8l.h Makefile
all: $(NAME).bin
all: $(NAME).ihx
$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
@touch $@
@echo $@
%.h: ;
clean:
rm -f $(TRASH)
load: $(NAME).bin
stm8flash $(FLASHFLAGS) -w $(NAME).bin
load: $(NAME).ihx
stm8flash $(FLASHFLAGS) -w $(NAME).ihx
%.rel: %.c
$(SDCC) $(CCFLAGS) -c $<
@ -33,7 +31,4 @@ load: $(NAME).bin
$(NAME).ihx: $(OBJ)
$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
$(NAME).bin: $(NAME).ihx
$(HEX2BIN) -p 00 $<
.PHONY: all

4
voltmeters/src/4-digit/led.c
View File

@ -205,10 +205,10 @@ void display_int(int I, char voltmeter){
// prepare buffer for voltmeter's values
if(voltmeter){
for(i = 1; i < 4; i++)
display_buffer[i] = ' ';
display_buffer[i] = 0;
}else{
for(i = 1; i < 4; i++)
display_buffer[i] = 0;
display_buffer[i] = ' ';
}
if(I == 0){ // just show zero
display_buffer[3] = 0;

15
voltmeters/src/5-digit/Makefile
View File

@ -1,31 +1,29 @@
NAME=testproj
SDCC=sdcc
HEX2BIN=hex2bin
CCFLAGS=-DSTM8S003 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx
LDFLAGS= -lstm8 -mstm8 --out-fmt-ihx
LDFLAGS=-mstm8 --out-fmt-ihx -lstm8
FLASHFLAGS=-cstlinkv2 -pstm8s003
SRC=$(wildcard *.c)
# ATTENTION: FIRST in list should be file with main()
OBJ=$(SRC:%.c=%.rel)
TRASH=$(OBJ) $(SRC:%.c=%.rst) $(SRC:%.c=%.asm) $(SRC:%.c=%.lst)
TRASH+=$(SRC:%.c=%.sym) $(NAME).ihx $(NAME).lk $(NAME).map
TRASH+=$(SRC:%.c=%.sym) $(NAME).lk $(NAME).map
INDEPENDENT_HEADERS=../stm8l.h Makefile
all: $(NAME).bin
all: $(NAME).ihx
$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
@touch $@
@echo $@
%.h: ;
clean:
rm -f $(TRASH)
load: $(NAME).bin
stm8flash $(FLASHFLAGS) -w $(NAME).bin
load: $(NAME).ihx
stm8flash $(FLASHFLAGS) -w $(NAME).ihx
%.rel: %.c
$(SDCC) $(CCFLAGS) -c $<
@ -33,7 +31,4 @@ load: $(NAME).bin
$(NAME).ihx: $(OBJ)
$(SDCC) $(LDFLAGS) $(OBJ) -o $(NAME).ihx
$(NAME).bin: $(NAME).ihx
$(HEX2BIN) -p 00 $<
.PHONY: all