SAI TX - нет
перед вызовом функции ТХ hsai_BlockA1.State=READY дает....ну готов значит sai к TX
Дальше:
if (HAL_SAI_Transmit_DMA(&hsai_BlockA1, (uint8_t *) saiTxBank, 4 ) != HAL_OK) Error_Handler();
дает HAL_OK. Значит функция работает корректно.
HAL_StatusTypeDef HAL_SAI_Transmit_DMA(SAI_HandleTypeDef *hsai, uint8_t *pData, uint16_t Size)
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
if(hsai->State == HAL_SAI_STATE_READY)
{
/* Process Locked */
__HAL_LOCK(hsai);
hsai->pBuffPtr = pData;
hsai->XferSize = Size;
hsai->XferCount = Size;
hsai->ErrorCode = HAL_SAI_ERROR_NONE;
hsai->State = HAL_SAI_STATE_BUSY_TX;
/* Set the SAI Tx DMA Half transfer complete callback */
hsai->hdmatx->XferHalfCpltCallback = SAI_DMATxHalfCplt;
/* Set the SAI TxDMA transfer complete callback */
hsai->hdmatx->XferCpltCallback = SAI_DMATxCplt;
/* Set the DMA error callback */
hsai->hdmatx->XferErrorCallback = SAI_DMAError;
/* Set the DMA Tx abort callback */
hsai->hdmatx->XferAbortCallback = NULL;
/* Enable the Tx DMA Stream */
if(HAL_DMA_Start_IT(hsai->hdmatx, (uint32_t)hsai->pBuffPtr, (uint32_t)&hsai->Instance->DR, hsai->XferSize) != HAL_OK)
{
__HAL_UNLOCK(hsai);
return HAL_ERROR;
}
/* Check if the SAI is already enabled */
if((hsai->Instance->CR1 & SAI_xCR1_SAIEN) == RESET)
{
/* Enable SAI peripheral */
__HAL_SAI_ENABLE(hsai);
}
/* Enable the interrupts for error handling */
__HAL_SAI_ENABLE_IT(hsai, SAI_InterruptFlag(hsai, SAI_MODE_DMA));
/* Enable SAI Tx DMA Request */
hsai->Instance->CR1 |= SAI_xCR1_DMAEN;
/* Process Unlocked */
__HAL_UNLOCK(hsai);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
самая основная функция "красная" и она тоже дает = HAL_OK.
