reflow-oven-control-sw/stm-firmware/updater/ram-code/main.c

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#include <stdint.h>
#include <stm32/stm32f4xx.h>
#include <cmsis/core_cm4.h>
#include "hex-parser.h"
#include <fatfs/ff.h>
#include <stdbool.h>
static volatile unsigned int wait_tick;
static void watchdog_ack(void)
{
IWDG->KR = 0xAAAA;
}
void sdio_wait_ms(unsigned int ms)
{
wait_tick = 0;
while (wait_tick < ms);
}
static FATFS _fs;
#define fs (&_fs)
static void __attribute__((noreturn)) ram_code_exit(bool updated)
{
(void)updated;
NVIC_SystemReset();
while(1);
}
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int ram_code_main(void)
{
FRESULT fres;
SysTick_Config(168000UL);
__enable_irq();
fres = f_mount(fs, "0:/", 1);
if (fres != FR_OK) {
ram_code_exit(false);
}
while(1) {
__WFI();
}
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return 0;
}
void SysTick_Handler(void)
{
static uint32_t tick_cnt = 0;
wait_tick++;
tick_cnt++;
watchdog_ack();
if (tick_cnt >= 250) {
GPIOB->ODR ^= (1<<2);
tick_cnt = 0;
}
}