stm32basic/basic/zdelay.c

#include "zdelay.h"

#include "zbase.h"
#include "project_configs.h"

extern TIM_HandleTypeDef SDK_DELAY_US_TIMER;

static HAL_StatusTypeDef _HAL_TIM_Base_Start(TIM_HandleTypeDef* htim) __attribute__((optimize("O2")));
static HAL_StatusTypeDef _HAL_TIM_Base_Stop(TIM_HandleTypeDef* htim) __attribute__((optimize("O2")));
static HAL_StatusTypeDef _HAL_TIM_Base_Start(TIM_HandleTypeDef* htim) {
  uint32_t tmpsmcr;
  /* Check the TIM state */
  if (htim->State != HAL_TIM_STATE_READY) {
    return HAL_ERROR;
  }
  htim->State = HAL_TIM_STATE_BUSY;
  if (IS_TIM_SLAVE_INSTANCE(htim->Instance)) {
    tmpsmcr = htim->Instance->SMCR & TIM_SMCR_SMS;
    if (!IS_TIM_SLAVEMODE_TRIGGER_ENABLED(tmpsmcr)) {
      __HAL_TIM_ENABLE(htim);
    }
  } else {
    __HAL_TIM_ENABLE(htim);
  }
  return HAL_OK;
}
static HAL_StatusTypeDef _HAL_TIM_Base_Stop(TIM_HandleTypeDef* htim) {
  /* Disable the Peripheral */
  __HAL_TIM_DISABLE(htim);
  /* Set the TIM state */
  htim->State = HAL_TIM_STATE_READY;
  /* Return function status */
  return HAL_OK;
}

void zdelay_us(int var_nus) {
  volatile uint32_t counter = 0;
  __HAL_TIM_SET_COUNTER(&SDK_DELAY_US_TIMER, 0);
  _HAL_TIM_Base_Start(&SDK_DELAY_US_TIMER);
  while (counter < var_nus) {
    counter = __HAL_TIM_GET_COUNTER(&SDK_DELAY_US_TIMER);
  }
  _HAL_TIM_Base_Stop(&SDK_DELAY_US_TIMER);
}
void zdelay_ms(int ms) {
  for (int i = 0; i < ms; i++) {
    zdelay_us(1000);
  }
}
void zos_delay_ms(int ms) { osDelay(ms); }

uint32_t zget_ticket(void) { return HAL_GetTick(); }

uint32_t zhas_passedms(uint32_t ticket) {
  uint32_t now = HAL_GetTick();
  if (now >= ticket) {
    return now - ticket;
  } else {
    return 0xFFFFFFFF - ticket + now;
  }
}