#include "led.h" #include "uart_log.h" #include "stdio.h" void system_init(void) { led_init(LED_PIN); uart_log_init(); } void led_blink(void) { led_on(LED_PIN); led_off(LED_PIN); } extern UART_HandleTypeDef UartHandle; int main(void) { system_init(); // NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); // __enable_irq(); printf("Run start ...\r\n"); while (1) { static uint32_t count = 0; printf("Hello World, count = %ld\r\n", count++); led_blink(); } return 0; }