#include #include #include #include #include "lwip/opt.h" #include "lwip/sys.h" #include "lwip/api.h" #include "main.h" int fputc(int ch, FILE *stream) { uint8_t c = ch; HAL_UART_Transmit(&huart1, &c, 1, 100); return ch; } void user_main() { printf("==============ethernet_sound_acquisition_card=============\r\n"); while (1) { HAL_GPIO_TogglePin(GPIOF, GPIO_PIN_10); HAL_Delay(1000); HAL_GPIO_TogglePin(GPIOF, GPIO_PIN_10); HAL_Delay(1000); osDelay(1); } }