mirror of
https://github.com/eddyem/tsys01.git
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127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
/*
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* main.c
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*
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* Copyright 2017 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "hardware.h"
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#include "usart.h"
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#include "i2c.h"
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#include "sensors_manage.h"
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#include "can.h"
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#include "can_process.h"
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#include "proto.h"
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#pragma message("USARTNUM=" STR(USARTNUM))
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#pragma message("I2CPINS=" STR(I2CPINS))
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#ifdef EBUG
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#pragma message("Debug mode")
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#else
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#pragma message("Release mode")
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#endif
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volatile uint32_t Tms = 0;
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volatile uint8_t canerror = 0;
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/* Called when systick fires */
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void sys_tick_handler(void){
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++Tms;
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}
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static void iwdg_setup(){
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/* Enable the peripheral clock RTC */
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/* (1) Enable the LSI (40kHz) */
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/* (2) Wait while it is not ready */
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RCC->CSR |= RCC_CSR_LSION; /* (1) */
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while((RCC->CSR & RCC_CSR_LSIRDY) != RCC_CSR_LSIRDY); /* (2) */
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/* Configure IWDG */
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/* (1) Activate IWDG (not needed if done in option bytes) */
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/* (2) Enable write access to IWDG registers */
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/* (3) Set prescaler by 64 (1.6ms for each tick) */
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/* (4) Set reload value to have a rollover each 2s */
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/* (5) Check if flags are reset */
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/* (6) Refresh counter */
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IWDG->KR = IWDG_START; /* (1) */
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IWDG->KR = IWDG_WRITE_ACCESS; /* (2) */
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IWDG->PR = IWDG_PR_PR_1; /* (3) */
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IWDG->RLR = 1250; /* (4) */
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while(IWDG->SR); /* (5) */
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IWDG->KR = IWDG_REFRESH; /* (6) */
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}
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int main(void){
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uint32_t lastT = 0, lastS = 0;
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uint8_t gotmeasurement = 0;
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sysreset();
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SysTick_Config(6000, 1);
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gpio_setup();
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usart_setup();
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i2c_setup(LOW_SPEED);
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iwdg_setup();
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CAN_setup();
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SEND("Greetings! My address is ");
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printuhex(getCANID());
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newline();
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if(RCC->CSR & RCC_CSR_IWDGRSTF){ // watchdog reset occured
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SEND("WDGRESET=1\n");
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}
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if(RCC->CSR & RCC_CSR_SFTRSTF){ // software reset occured
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SEND("SOFTRESET=1\n");
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}
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RCC->CSR |= RCC_CSR_RMVF; // remove reset flags
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while (1){
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IWDG->KR = IWDG_REFRESH; // refresh watchdog
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if(lastT > Tms || Tms - lastT > 499){
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LED_blink(LED0);
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lastT = Tms;
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// send dummy command to noone to test CAN bus
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can_send_cmd(NOONE_ID, CMD_DUMMY0);
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}
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if(lastS > Tms || Tms - lastS > 5){ // run sensors proc. once per 5ms
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sensors_process();
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lastS = Tms;
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}
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can_proc();
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CAN_status stat = CAN_get_status();
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if(stat == CAN_FIFO_OVERRUN){
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SEND("CAN bus fifo overrun occured!\n");
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}else if(stat == CAN_ERROR){
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LED_off(LED1);
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CAN_setup();
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canerror = 1;
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}
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can_messages_proc();
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if(SENS_SLEEPING == sensors_get_state()){ // show temperature @ each sleeping occurence
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if(!gotmeasurement){
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gotmeasurement = 1;
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showtemperature();
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}
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}else{
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gotmeasurement = 0;
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}
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if(usartrx()){ // usart1 received data, store in in buffer
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cmd_parser();
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}
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}
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return 0;
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}
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