sync_wave_box/usec/port.c

#include <stdint.h>
#include <stdio.h>

#include "board.h"
#include "main.h"
#include "usart.h"
/**
 * @brief printf 重定向
 *
 * @param ch
 * @param stream
 * @return int
 */
int fputc(int ch, FILE* stream) {
  uint8_t c = ch;
  HAL_UART_Transmit(&DEBUG_UART, &c, 1, 100);
  return ch;
}

/**
 * @brief ticket辅助方法
 */

uint32_t port_haspassedms(uint32_t ticket) {
  uint32_t nowticket = HAL_GetTick();
  if (nowticket >= ticket) {
    return nowticket - ticket;
  }
  return UINT32_MAX - ticket + nowticket;
}