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) {
  volatile uint32_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_us(uint32_t n) {
  uint32_t us = n % 1000;
  uint32_t ms = n / 1000;
  if (us > 0) {
    _chip_delay_us(us);
  }
  for (uint32_t i = 0; i < ms; i++) {
    _chip_delay_us(1000);
  }
}
void chip_delay_ms(uint32_t n) {
  uint32_t i;
  for (i = 0; i < n; i++) {
    chip_delay_us(1000);
  }
}

void ifly_delay_ms(uint32_t n) { chip_delay_ms(n); }

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;
}

uint32_t haspassedms2(uint32_t lastticket, uint32_t nowticket) {
  if (nowticket >= lastticket) {
    return nowticket - lastticket;
  }
  return UINT32_MAX - lastticket + nowticket;
}