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add watchdog and better debugging

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This commit is contained in:
King Kévin 2016-10-08 14:32:31 +02:00
parent 5de420d908
commit 4821a782ee
2 changed files with 29 additions and 5 deletions
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3
global.h
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@ -19,6 +19,9 @@
*/
#pragma once
/** enable debugging functionalities */
#define DEBUG true
/** get the length of an array */
#define LENGTH(x) (sizeof(x) / sizeof((x)[0]))
/** concatenate 2 arguments (used to defer concatenation) */

31
main.c
View File

@ -27,13 +27,15 @@
#include <math.h> // mathematical utilities
/* STM32 (including CM3) libraries */
#include <libopencm3/stm32/rcc.h> // real-time control clock library
#include <libopencm3/stm32/gpio.h> // general purpose input output library
#include <libopencm3/cm3/scb.h> // vector table definition
#include <libopencmsis/core_cm3.h> // Cortex M3 utilities
#include <libopencm3/cm3/scb.h> // vector table definition
#include <libopencm3/cm3/nvic.h> // interrupt utilities
#include <libopencm3/stm32/gpio.h> // general purpose input output library
#include <libopencm3/stm32/rcc.h> // real-time control clock library
#include <libopencm3/stm32/exti.h> // external interrupt utilities
#include <libopencm3/stm32/rtc.h> // real time clock utilities
#include <libopencm3/stm32/iwdg.h> // independent watchdog utilities
#include <libopencm3/stm32/dbgmcu.h> // debug utilities
/* own libraries */
#include "global.h" // board definitions
@ -143,6 +145,14 @@ void main(void)
{
rcc_clock_setup_in_hse_8mhz_out_72mhz(); // use 8 MHz high speed external clock to generate 72 MHz internal clock
#if DEBUG
DBGMCU_CR |= DBGMCU_CR_IWDG_STOP; // stop independent watchdog counter when code is halted
DBGMCU_CR |= DBGMCU_CR_WWDG_STOP; // stop window watchdog counter when code is halted
DBGMCU_CR |= DBGMCU_CR_STANDBY; // allow debug also in standby mode (keep digital part and clock powered)
DBGMCU_CR |= DBGMCU_CR_STOP; // allow debug also in stop mode (keep clock powered)
DBGMCU_CR |= DBGMCU_CR_SLEEP; // allow debug also in sleep mode (keep clock powered)
#endif
// setup board
board_setup();
@ -189,14 +199,24 @@ void main(void)
radio_esp8266_setup();
printf("OK\n");
#if !(DEBUG)
//setup watchdog to reset in case we get stuck (i.e. when an error occurred)
#define WATCHDOG_PERIOD 10000 /**< watchdog period in ms */
printf("setup watchdog (%.2fs): ",WATCHDOG_PERIOD/1000.0);
iwdg_set_period_ms(WATCHDOG_PERIOD); // set independent watchdog period
iwdg_start(); // start independent watchdog
printf("OK\n");
#endif
// send HTTP POST request
printf("making HTTP request: ");
radio_esp8266_tcp_open("192.168.42.2",8086); // open connection
radio_esp8266_tcp_open("192.168.42.3",8086); // open connection
while (!radio_esp8266_activity) { // wait until response has been received
__WFI(); // wait until something happens
}
if (!radio_esp8266_success) { // could not open port
return; // not ideal error handling
printf("TCP connection failed\n");
while (true); // unhandled error. wait for debugging or watchdog
}
char http_line[256+1] = {0};
int http_length = snprintf(http_line, LENGTH(http_line), "POST /write?db=test HTTP/1.1\r\n");
@ -263,6 +283,7 @@ void main(void)
char c = ' '; // to store received character
bool char_flag = false; // a new character has been received
while (true) { // infinite loop
iwdg_reset(); // kick the dog
while (usart_received) { // data received over UART
action = true; // action has been performed
led_toggle(); // toggle LED