a8000_subboard_sdk/chip/delay.c

#include "delay.h"
#include <stdint.h>

static TIM_HandleTypeDef *m_dhtim;
void chip_delay_init(TIM_HandleTypeDef *htim) { m_dhtim = htim; }
void chip_delay_us(uint32_t n) {
  uint16_t counter = 0;
  __HAL_TIM_SET_COUNTER(m_dhtim, 0);
  HAL_TIM_Base_Start(m_dhtim);
  while (counter < n) {
    counter = __HAL_TIM_GET_COUNTER(m_dhtim);
  }
  HAL_TIM_Base_Stop(m_dhtim);
}
void chip_delay_ms(uint32_t n) {
  uint32_t i;
  for (i = 0; i < n; i++) {
    chip_delay_us(1000);
  }
}
uint32_t chip_get_ticket() {
  uint32_t ticket = HAL_GetTick();
  return ticket;
}

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