IIC异常关闭中断，导致滴答定时器运行错误
772984087@qq.co 提问时间: 2023-07-08 16:22:17 / 未解决| ``` static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart) { /* Wait until flag is set */ while (__HAL_I2C_GET_FLAG(hi2c, Flag) == Status) { /* Check for the Timeout */ if (Timeout != HAL_MAX_DELAY) { if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) { hi2c->PreviousState = I2C_STATE_NONE; hi2c->State = HAL_I2C_STATE_READY; hi2c->Mode = HAL_I2C_MODE_NONE; hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; /* Process Unlocked */ __HAL_UNLOCK(hi2c); return HAL_ERROR; } } } return HAL_OK; } ``` |
2个回答
- 772984087@qq.co 回答时间: 2023-07-08 16:41:08
`HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
废鱼 回答时间: 2023-07-08 17:08:03我理解这里不会影响systick的运行，但是需要排除是否由于这个I2C的操作导致产生硬件错误中断后，进入错误中断，systick运行，或者I2C中断在一直运行，导致systick中断不运行。