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distancemeter alpha

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Eddy 2014-07-07 11:47:13 +04:00
parent 7919850a6d
commit dd757f55fe
18 changed files with 1953 additions and 0 deletions
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NAME=testproj
SDCC=sdcc
CCFLAGS=-DSTM8S105 -I../ -I/usr/share/sdcc/include -mstm8 --out-fmt-ihx -DUART
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).ihx $(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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This is a table-based generator of simplest waveforms

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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 "main.h"
#include "noicegen.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){ // generate pulses for stepper CLK
if(TIM2_SR1 & TIM_SR1_UIF){
sample_flag = 1;
TIM2_SR1 &= ~TIM_SR1_UIF;
}
}
// Timer2 Capture/Compare Interrupt
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){
#ifdef UART
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));
UART_send_byte(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
}
#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 "stm8l.h"
#include "ports_definition.h"
#include "interrupts.h"
#include "main.h"
#include "noicegen.h"
/*
* 0 0000
* 1 0001
* 2 0010
* 3 0011
* 4 0100
* 5 0101
* 6 0110
* 7 0111
* 8 1000
* 9 1001
* a 1010
* b 1011
* c 1100
* d 1101
* e 1110
* f 1111
*/
unsigned long Global_time = 0L, boom_start = 0L; // global time in ms
unsigned int boom_length = 100; // length of "boom" in ms
U16 paused_val = 500; // interval between LED flashing
U8 snd_i = 0, bank_i = 0; // number of sample in sound, number in sine vawe
U8 sample_flag = 0; // flag is set in interrupt -> next sample in sound
#ifdef UART
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)
U8 UART_is_our = 0; // ==1 if we get UART
// ATTENTION! to change global variable in PROGRAM memory, it should be CONST!!!
const U8 UART_devNUM = THIS_DEVICE_NUM; // device number, master sais it
/**
* Send one byte through UART
* @param byte - data to send
*/
void UART_send_byte(U8 byte){
UART2_DR = byte;
while(!(UART2_SR & UART_SR_TC));
}
void uart_write(char *str){
while(*str){
UART2_DR = *str++;
while(!(UART2_SR & UART_SR_TC));
}
}
/**
* 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]);
}
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');
}
#endif // UART
int main() {
unsigned long T = 0L;
unsigned int I;
U8 cur_vol;
int Ival;
#ifdef UART
U8 rb;
#endif
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;
#ifdef UART
// Configure pins
// PC2 - PP output (on-board LED)
PORT(LED_PORT, DDR) |= LED_PIN;
PORT(LED_PORT, CR1) |= LED_PIN;
// PD5 - UART2_TX -- pseudo open-drain output; don't forget an pullup resistor!
PORT(UART_PORT, DDR) |= UART_TX_PIN;
PORT(UART_PORT, ODR) &= ~UART_TX_PIN; // turn off N push-down
//PORT(UART_PORT, CR1) |= UART_TX_PIN;
#endif
PC_DDR |= GPIO_PIN1; // setup timer's output
PC_ODR &= ~GPIO_PIN1;
#ifdef UART
// Configure UART
// 9 bit, no parity, 1 stop (UART_CR3 = 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
#endif
configure_timers();
// enable all interrupts
enableInterrupts();
// Loop
do{
if(sample_flag){ // next sample in sound
I = Global_time - boom_start; // amount of us from start
if(I > boom_length || boom_start > Global_time){
// end of sound
stop_snd();
}else{
I *= 16;
cur_vol = 16 - I / boom_length; // linear fading
// generate meander
if(bank_i){
change_CCR(0);
bank_i = 0;
}else{
change_CCR(cur_vol);
bank_i = 1;
}
}
}
if((Global_time - T > paused_val) || (T > Global_time)){
T = Global_time;
#ifdef UART
PORT(LED_PORT, ODR) ^= LED_PIN; // blink on-board LED
#endif
}
#ifdef UART
if(UART_read_byte(&rb)){ // buffer isn't empty
switch(rb){
case 'h': // help
case 'H':
uart_write("\nPROTO:\n"
"+/-\tLED period\n"
"P/p\tBoom\n"
"F\tSet frequency\n"
"L\tChange boom length (in ms)\n"
);
break;
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 < 100) // but not less than 0.1s
paused_val = 500;
break;
case 'F':
if(readInt(&Ival) && Ival > 64){
change_period(((U16)Ival) >> 4); // F*4 for 16 array values
}else error_msg("bad period");
break;
case 'P':
case 'p':
play_snd();
break;
case 'L':
if(readInt(&Ival) && Ival < 1000 && Ival > 1){
boom_length = Ival;
}else error_msg("bad length");
break;
}
}
#endif
}while(1);
}

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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 unsigned long Global_time, boom_start; // global time in ms
extern U8 sample_flag; // flag is set in interrupt -> next sample in sound
extern U8 snd_i, bank_i;
#define UART_BUF_LEN 8 // max 7 bytes transmited in on operation
#define MIN_STEP_LENGTH 9 // max speed, microseconds for one microstep
#define THIS_DEVICE_NUM 1 // hardware number (0..255) can be changed by writting into EEPROM
#ifdef UART
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 error_msg(char *msg);
#endif
#define check_UART_pointer(x) if(x == UART_BUF_LEN) x = 0;
#endif // __MAIN_H__

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/*
* noicegen.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 "noicegen.h"
void configure_timers(){
/**** TIMERS TIM1 - 1MHz, TIM2 - 1MHz ****/
TIM1_PSCRH = 0; // this timer have 16 bit prescaler
TIM1_PSCRL = 3; // LSB should be written last as it updates prescaler
TIM2_PSCR = 4;
// Timer1 is PWM sound level generator
// Timer2 runs with F*16 to change voltage level (F - frequency of sound)
TIM1_ARRH = 0;
TIM1_ARRL = 16;
TIM1_CCR1H = 0; TIM1_CCR1L = 8; // default: 50%
// channel 1 generates PWM pulses
TIM1_CCMR1 = 0x60; // OC1M = 110b - PWM mode 1 ( 1 -> 0)
//TIM1_CCMR1 = 0x70; // OC1M = 111b - PWM mode 2 ( 0 -> 1)
TIM1_CCER1 = 1; // Channel 1 is on. Active is high
//TIM1_CCER1 = 3; // Channel 1 is on. Active is low
// default period: near 32ms
TIM2_ARRH = 127; TIM2_ARRL = 0;
// interrupts: update for timer 2, none for timer 1
TIM1_IER = 0;
TIM2_IER = TIM_IER_UIE;
// enable PWM output for timer1
TIM1_BKR |= 0x80; // MOE
}

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/*
* noicegen.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 __NOICEGEN_H__
#define __NOICEGEN_H__
#include "stm8l.h"
#include "main.h"
#define TIM_EN (TIM_CR1_APRE | TIM_CR1_URS | TIM_CR1_CEN)
void configure_timers();
// change period (in us)
#define change_period(F) do{TIM2_ARRH = F >> 8; TIM2_ARRL = F;}while(0)
#define change_CCR(C) do{TIM1_CCR1H = 0; TIM1_CCR1L = C;}while(0)
// change CCR value. U = Vcc *
#define play_snd() do{boom_start = Global_time; snd_i = 0; bank_i = 0; \
TIM1_CR1 = TIM_EN; TIM2_CR1 = TIM_EN;}while(0)
#define stop_snd() do{TIM1_CR1 |= TIM_CR1_OPM; TIM2_CR1 = 0;}while(0)
#endif // __NOICEGEN_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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function waveforms(FN, nm)
% Prints on stdout 16 values for waveform bank
% FN - array with 16 values of Vout (Vmin..Vmax), will be normalized
% nm - name of array
MIN = min(FN); MAX = max(FN);
FN = (FN - MIN) / (MAX - MIN);
VAL = round(FN * 16);
printf("static const U8 %s[16] = {", nm)
for i = 1:15; printf("%d, ", VAL(i)); endfor;
printf("%d};\n", VAL(16));
plot(VAL, 'o');
endfunction

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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).ihx $(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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PROGRAM = client
LDFLAGS =
SRCS = client.c
CC = gcc
DEFINES = -D_XOPEN_SOURCE=501
CXX = gcc
CFLAGS = -Wall -Werror $(DEFINES)
OBJS = $(SRCS:.c=.o)
all : $(PROGRAM) clean
$(PROGRAM) : $(OBJS)
$(CC) $(CFLAGS) $(OBJS) $(LDFLAGS) -o $(PROGRAM)
# some addition dependencies
# %.o: %.c
# $(CC) $(LDFLAGS) $(CFLAGS) $< -o $@
#$(SRCS) : %.c : %.h $(INDEPENDENT_HEADERS)
# @touch $@
clean:
/bin/rm -f *.o *~
depend:
$(CXX) -MM $(CXX.SRCS)

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/*
* client.c - simple terminal client
*
* Copyright 2013 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 <termios.h> // tcsetattr
#include <unistd.h> // tcsetattr, close, read, write
#include <sys/ioctl.h> // ioctl
#include <stdio.h> // printf, getchar, fopen, perror
#include <stdlib.h> // exit
#include <sys/stat.h> // read
#include <fcntl.h> // read
#include <signal.h> // signal
#include <time.h> // time
#include <string.h> // memcpy
#include <stdint.h> // int types
#include <sys/time.h> // gettimeofday
#define CMSPAR 010000000000
double t0; // start time
FILE *fout = NULL; // file for messages duplicating
char *comdev = "/dev/ttyUSB0";
int BAUD_RATE = B57600;
struct termio oldtty, tty; // TTY flags
struct termios oldt, newt; // terminal flags
int comfd; // TTY fd
/**
* function for different purposes that need to know time intervals
* @return double value: time in seconds
*/
double dtime(){
double t;
struct timeval tv;
gettimeofday(&tv, NULL);
t = tv.tv_sec + ((double)tv.tv_usec)/1e6;
return t;
}
/**
* Exit & return terminal to old state
* @param ex_stat - status (return code)
*/
void quit(int ex_stat){
tcsetattr(STDIN_FILENO, TCSANOW, &oldt); // return terminal to previous state
ioctl(comfd, TCSANOW, &oldtty ); // return TTY to previous state
close(comfd);
if(fout) fclose(fout);
printf("Exit! (%d)\n", ex_stat);
exit(ex_stat);
}
unsigned char crc(unsigned char data){
unsigned char crc = data & 1;
unsigned int i;
for(i = 1; i<8; i++) crc ^= (data >> i) & 1;
return crc;
}
/**
* Open & setup TTY, terminal
*/
void tty_init(){
// terminal without echo
tcgetattr(STDIN_FILENO, &oldt);
newt = oldt;
newt.c_lflag &= ~(ICANON | ECHO);
if(tcsetattr(STDIN_FILENO, TCSANOW, &newt) < 0) quit(-2);
printf("\nOpen port...\n");
if ((comfd = open(comdev,O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0){
fprintf(stderr,"Can't use port %s\n",comdev);
quit(1);
}
printf(" OK\nGet current settings...\n");
if(ioctl(comfd,TCGETA,&oldtty) < 0) exit(-1); // Get settings
tty = oldtty;
tty.c_lflag = 0; // ~(ICANON | ECHO | ECHOE | ISIG)
tty.c_oflag = 0;
tty.c_iflag = 0;
tty.c_cflag = BAUD_RATE|CS8|CREAD|CLOCAL|PARENB; // we will emulate 9bit by PAR
tty.c_cc[VMIN] = 0; // non-canonical mode
tty.c_cc[VTIME] = 5;
if(ioctl(comfd,TCSETA,&tty) < 0) exit(-1); // set new mode
printf(" OK\n");
tcsetattr(STDIN_FILENO, TCSANOW, &newt);
}
/**
* Read character from console without echo
* @return char readed
*/
int read_console(){
int rb;
struct timeval tv;
int retval;
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(STDIN_FILENO, &rfds);
tv.tv_sec = 0; tv.tv_usec = 10000;
retval = select(1, &rfds, NULL, NULL, &tv);
if(!retval) rb = 0;
else {
if(FD_ISSET(STDIN_FILENO, &rfds)) rb = getchar();
else rb = 0;
}
return rb;
}
/**
* getchar() without echo
* wait until at least one character pressed
* @return character readed
*/
int mygetchar(){ // getchar() without Enter
int ret;
do ret = read_console();
while(ret == 0);
return ret;
}
/**
* Read data from TTY
* @param buff (o) - buffer for data read
* @param length - buffer len
* @return amount of readed bytes
*/
size_t read_tty(uint8_t *buff, size_t length){
ssize_t L = 0;
fd_set rfds;
struct timeval tv;
int retval;
FD_ZERO(&rfds);
FD_SET(comfd, &rfds);
tv.tv_sec = 0; tv.tv_usec = 10000; // wait for 10ms
retval = select(comfd + 1, &rfds, NULL, NULL, &tv);
if (!retval) return 0;
if(FD_ISSET(comfd, &rfds)){
if((L = read(comfd, buff, length)) < 1) return 0;
}
return (size_t)L;
}
void help(){
printf("Use this commands:\n"
"H\tShow this help\n"
"q\tQuit\n"
);
}
#define dup_pr(...) do{printf(__VA_ARGS__); if(fout) fprintf(fout, __VA_ARGS__);}while(0)
/**
* Set/reset nineth bit and send command
* @param
* @return
*/
void send_with_9(unsigned char cmd, int nineth){
if(crc(cmd) ^ nineth) // (ODD CRC) XOR (set nineth) -> odd parity
tty.c_cflag |= PARODD; // odd parity
else
tty.c_cflag &= ~PARODD; // even parity
if(ioctl(comfd, TCSETA, &tty) < 0){
perror("Ioctl");
quit(2);
}
if(write(comfd, &cmd, 1) < 1){
perror("Can't write to port");
quit(2);
}
}
void con_sig(int rb){
if(rb < 1) return;
if(rb == 'q') quit(0); // q == exit
else if(rb == 'H'){ // this program help
help();
return;
}
send_with_9((unsigned char)rb, 0); // just send command with zero nineth bit
}
/**
* Get integer value from buffer
* @param buff (i) - buffer with int
* @param len - length of data in buffer (could be 2 or 4)
* @return
*/
uint32_t get_int(uint8_t *buff, size_t len){
if(len != 2 && len != 4){
fprintf(stdout, "Bad data length!\n");
return 0xffffffff;
}
uint32_t data = 0;
uint8_t *i8 = (uint8_t*) &data;
if(len == 2) memcpy(i8, buff, 2);
else memcpy(i8, buff, 4);
return data;
}
int main(int argc, char *argv[]){
int rb;
uint8_t buff[128];
size_t L;
if(argc == 2){
fout = fopen(argv[1], "a");
if(!fout){
perror("Can't open output file");
exit(-1);
}
setbuf(fout, NULL);
}
tty_init();
signal(SIGTERM, quit); // kill (-15)
signal(SIGINT, quit); // ctrl+C
signal(SIGQUIT, SIG_IGN); // ctrl+\ .
signal(SIGTSTP, SIG_IGN); // ctrl+Z
setbuf(stdout, NULL);
t0 = dtime();
while(1){
rb = read_console();
if(rb > 0) con_sig(rb);
L = read_tty(buff, 127);
if(L){
buff[L] = 0;
printf("%s", buff);
if(fout) fprintf(fout, "%zd\t%s\n", time(NULL), buff);
}
}
}

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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 "main.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){}
volatile U8 in_measure; // flag of measurenent
// Timer1 Update/Overflow/Trigger/Break Interrupt
// in_measure == 1 means that we will get wrong result as pulse length is too long
// pulse of 65536us is 32768us to something == near 11 meters
INTERRUPT_HANDLER(TIM1_UPD_OVF_TRG_BRK_IRQHandler, 11){
TIM1_SR1 &= ~TIM_SR1_UIF; // clear this flag
if(!in_measure) return; // not process when there's nothing started
//uart_write("OVF\n");
US_flag = 3;
TIM1_SR1 = 0;
TIM1_SR2 = 0;
TIM1_CR1 = 0;TIM1_CCER1 &= ~0x11; // stop timer
in_measure = 0;
}
// Timer1 Capture/Compare Interrupt routine.
// pulse width measurement: PC1 - TIM1_CH1
INTERRUPT_HANDLER(TIM1_CAP_COM_IRQHandler, 12){
/*U16 P = TIM1_CNTRH;
P |= TIM1_CNTRL << 8;
printUint((U8*)&P,2);
printUint(&TIM1_CCR2H,1);
printUint(&TIM1_CCR2L,1);
printUint(&TIM1_CCR1H,1);
printUint(&TIM1_CCR1L,1);
printUint(&TIM1_CNTRH,1);
printUint(&TIM1_CNTRL,1);*/
//Pulse_length = ((U16)TIM1_CCR2H << 8) | TIM1_CCR2L;
if(TIM1_SR1 & TIM_SR1_CC2IF){
TIM1_SR1 = 0; // clear all interrupt flags
TIM1_CR1 = 0;TIM1_CCER1 &= ~0x11; // stop timer
in_measure = 0; // work done
// uart_write("CCR2\n");
if(TIM1_SR2){ // overcapture: noice etc.
TIM1_SR2 = 0;
US_flag = 1;
}else{
US_flag = 2;
}
}
if(TIM1_SR1 & TIM_SR1_CC1IF){
TIM1_SR1 &= ~TIM_SR1_CC1IF; // clear this interrupt flags
in_measure = 1; // start of measurement
// uart_write("CCR1\n");
/* TIM1_CNTRH = 0; TIM1_CNTRL = 0;
TIM1_CCR2H = 0; TIM1_CCR2L = 0;
TIM1_CCR1H = 0; TIM1_CCR1L = 0;*/
}
}
#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
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){
U8 rb;
if(UART2_SR & UART_SR_RXNE){ // data received
rb = UART2_DR; // read received byte & clear RXNE flag
UART_send_byte(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){
ADC_value = ADC_DRL; // in right-alignment mode we should first read LSB
ADC_value |= ADC_DRH << 8;
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){
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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/*
* 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 "stm8l.h"
#include "ports_definition.h"
#include "interrupts.h"
#include "main.h"
/*
* 0 0000
* 1 0001
* 2 0010
* 3 0011
* 4 0100
* 5 0101
* 6 0110
* 7 0111
* 8 1000
* 9 1001
* a 1010
* b 1011
* c 1100
* d 1101
* e 1110
* f 1111
*/
unsigned long Global_time = 0L; // global time in ms
U16 paused_val = 500; // interval between LED flashing
volatile U16 ADC_value = 0; // value of last ADC measurement
volatile U16 Pulse_length = 11; // length of ultrasonic echo pulse
U8 US_flag = 0;// 0 - conversion in progress; 1 - conversion error; 2 - conversion done; 3 - overflow
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)
// ATTENTION! to change global variable in PROGRAM memory, it should be CONST!!!
//const U8 UART_devNUM = THIS_DEVICE_NUM; // device number, master sais it
/**
* Send one byte through UART
* @param byte - data to send
*/
void UART_send_byte(U8 byte){
UART2_DR = byte;
while(!(UART2_SR & UART_SR_TC));
}
void uart_write(char *str){
while(*str){
UART2_DR = *str++;
while(!(UART2_SR & UART_SR_TC));
}
}
/**
* 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]);
}
/*
U8 U8toHEX(U8 val){
val &= 0x0f;
if(val < 10) val += '0';
else val += 'a' - 10;
return val;
}
void printUintHEX(U8 *val, U8 len){
U8 i, V;
uart_write("0x");
for(i = 0; i < len; i++){
V = *val++;
UART_send_byte(U8toHEX(V>>4)); // MSB
UART_send_byte(U8toHEX(V)); // LSB
}
UART_send_byte('\n');
}*/
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');
}
/**
* Change variable stored in program memory
* !!! You can change only const values (non-constants are initializes on program start)
* @param addr - variable address
* @param new value
* @return 0 in case of error
*/
U8 change_progmem_value(U8 *addr, U8 val){
// unlock memory
FLASH_PUKR = EEPROM_KEY2;
FLASH_PUKR = EEPROM_KEY1;
// check bit PUL=1 in FLASH_IAPSR
if(!FLASH_IAPSR & 0x02)
return 0;
*addr = val;
// clear PUL to lock write
FLASH_IAPSR &= ~0x02;
return 1;
}
/*
U8 change_eeprom_value(U8 *addr, U8 val){
// unlock memory
FLASH_DUKR = EEPROM_KEY1;
FLASH_DUKR = EEPROM_KEY2;
// check bit DUL=1 in FLASH_IAPSR
if(!FLASH_IAPSR & 0x08)
return 0;
*addr = val;
// clear DUL to lock write
FLASH_IAPSR &= ~0x08;
return 1;
}
*/
/**
* Start measurements by ultrasonic distance meter
* @param
* @return
*/
void US_start(){
U8 i;
TIM1_CNTRH = 0; TIM1_CNTRL = 0;
TIM1_CCR2H = 0; TIM1_CCR2L = 0;
US_flag = 0;
// post initial pulse
PORT(US_OUT_PORT, ODR) |= US_OUT_PIN;
for(i = 0; i < 160; i++) nop(); // wait at least for 10us
PORT(US_OUT_PORT, ODR) &= ~US_OUT_PIN;
// Enable the captures by writing the CC1E and CC2E bits to 1 in the TIM1_CCER1 register.
TIM1_CCER1 |= 0x11;
TIM1_CR1 = TIM_CR1_CEN; // turn on timer
}
/**
* Check ultrasonic flag value and send message
* @param
* @return
*/
void US_check(){
unsigned long L;
if(!US_flag) return;
if(US_flag == 1){ // error - write message
error_msg("measurement overcapture");
}else if(US_flag == 3){ // overflow
error_msg("TIM1 overflow");
}else{ // all OK - write measured length
Pulse_length = ((U16)TIM1_CCR2H << 8) | TIM1_CCR2L;
printUint((U8*)&Pulse_length,2);
// sound velocity == 340m/s in normal conditions
// So distance = pulse * 1e-6(us) * 340 / 2
// in millimeters this is equal of pulse*170/1000
L = ((unsigned long) Pulse_length) * 170L;
L /= 1000L;
uart_write("Distance (mm): ");
printUint((U8*)&L, 4);
}
US_flag = 0;
}
int main(){
unsigned long T = 0L;
//int Ival;
// unsigned long ul;
// U16 u16;
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;
// Configure Timer1 for measurement of US pulse width:
// main frequency: 1MHz
// 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
// capture/compare channel
// channel CC1 (0->1) stores low pulse length,
// channel CC2 (1->0) stores time period between two consequent zero-transitions
TIM1_IER = TIM_IER_CC2IE | TIM_IER_CC1IE | TIM_IER_UIE;// enable interrupt on CC2 & overflow
// 1. Select the active input capture or trigger input for TIM1_CCR1 by writing the CC1S bits
// to 01 in the TIM1_CCMR1 register (TI1FP1 selected).
// IC1F = 0 - no filter
// IC1PSC = 0 - no prescaler
// TIM1_CCMR1: IC1F[3:0] | IC1PSC[1:0] | CC1S[1:0]
TIM1_CCMR1 = 1;
// 3. Select the active input for TIM1_CCR2 by writing the CC2S bits to 10 in the
// TIM1_CCMR2 register (TI1FP2 selected).
TIM1_CCMR2 = 2;
// 2. Select the active polarity for TI1FP1 (used for both capture and counter clear in
// TIMx_CCR1) by writing the CC1P bit to 0 (TI1FP1 active on rising edge).
// 4. Select the active polarity for TI1FP2 (used for capture in TIM1_CCR2) by writing the
// CC2P bit to 1 (TI1FP2 active on falling edge).
// TIM1_CCER1: CC2NP | CC2NE | CC2P | CC2E | CC1NP | CC1NE | CC1P | CC1E
TIM1_CCER1 = 0x20;
// 5. Select the valid trigger input by writing the TS bits to 101 in the
// TIM1_SMCR register (TI1FP1 selected).
// 6. Configure the clock/trigger controller in reset mode by writing the
// SMS bits to 100 in the TIM1_SMCR register
// TIM1_SMCR: MSM | TS[2:0] | (reserved) | SMS[2:0]
TIM1_SMCR = 0x54;
//TIM1_CR1 = 0;
// Configure ADC
// select PD2[AIN3] & enable interrupt for EOC
ADC_CSR = 0x23;
ADC_TDRL = 0x08; // disable Schmitt triger for AIN3
// 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;
ADC_CR1 = 0x73; // turn on ADC (this needs second write operation)
// Configure pins
// PC2 - PP output (on-board LED)
PORT(LED_PORT, DDR) |= LED_PIN;
PORT(LED_PORT, CR1) |= LED_PIN;
// PD5 - UART2_TX -- pseudo open-drain output; don't forget an pullup resistor!
PORT(UART_PORT, DDR) |= UART_TX_PIN;
PORT(UART_PORT, ODR) &= ~UART_TX_PIN; // turn off N push-down
//PORT(UART_PORT, CR1) |= UART_TX_PIN;
// Ultrasonic
// out, PP
PORT(US_OUT_PORT, DDR) |= US_OUT_PIN;
PORT(US_OUT_PORT, CR1) |= US_OUT_PIN;
//
// Configure UART
// 9 bit, no parity, 1 stop (UART_CR3 = 0 - reset value)
// 57600 on 16MHz: BRR1=0x11, BRR2=0x06
UART2_BRR1 = 0x11; UART2_BRR2 = 0x06;
UART2_CR1 = UART_CR1_M; // M = 1 -- 9bits
UART2_CR2 = UART_CR2_TEN | UART_CR2_REN | UART_CR2_RIEN; // Allow RX, generate ints on rx
// 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(US_flag) US_check(); // end of measurement with ultrasonic?
if(UART_read_byte(&rb)){ // buffer isn't empty
switch(rb){
case 'h': // help
case 'H':
uart_write("\nPROTO:\n"
"+/-\tLED period\n"
"A\tprint ADC value\n"
"D\tmeasure distance by US\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 < 100) // but not less than 0.1s
paused_val = 500;
break;
case 'A':
// ul = ADC_value * 3300L;
// u16 = (U16)(ul >> 10); // 0..3300 - U in mv
// printUint((U8*)&u16,2);
printUint((U8*)&ADC_value,2);
break;
case 'D':
US_start();
break;
/* case 'N':
if(readInt(&Ival) && Ival > 0 && Ival < 256)
if(!change_progmem_value(&UART_devNUM, (unsigned int) Ival))
error_msg("can't change val");
break;
*/
default:
break;
}
}
}while(1);
}

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/*
* main.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 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;
extern U8 US_flag;
extern volatile U16 ADC_value ;
extern volatile U16 Pulse_length;
//extern const U8 UART_devNUM;
void UART_send_byte(U8 byte);
void uart_write(char *str);
void printUint(U8 *val, U8 len);
void error_msg(char *msg);
#define check_UART_pointer(x) if(x == UART_BUF_LEN) x = 0;
#endif // __MAIN_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
// Ultrasonic interface
// out: PE5
#define US_OUT_PORT PE
#define US_OUT_PIN GPIO_PIN5
// pulse width measurement: PC1 - TIM1_CH1
#define US_IN_PORT PC
#define US_IN_PIN GPIO_PIN1
#endif // __PORTS_DEFINITION_H__