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fix[STM32][SPI]: ignore benign Tx-only OVR after async completion

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This commit is contained in:
wdfk-prog
2026-05-20 10:42:56 +08:00
committed by Rbb666
parent 415f924c5f
commit bdcaf2ad56
1 changed files with 24 additions and 5 deletions
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bsp/stm32/libraries/HAL_Drivers/drivers/drv_spi.c
+24 -5
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@@ -485,7 +485,7 @@ static rt_ssize_t spixfer(struct rt_spi_device *device, struct rt_spi_message *m
#endif /* BSP_SPI_USING_DMA */
#ifdef BSP_SPI_USING_INT
rt_bool_t int_eligible = (send_length >= BSP_SPI_INT_TRANS_MIN_LEN);
rt_bool_t int_eligible = (send_length >= BSP_SPI_INT_TRANS_MIN_LEN);
#if defined(BSP_SPI_TX_USING_INT)
rt_bool_t use_tx_int = int_eligible && spi_drv->spi_dma_flag & RT_DEVICE_FLAG_INT_TX;
#else
@@ -602,10 +602,29 @@ static rt_ssize_t spixfer(struct rt_spi_device *device, struct rt_spi_message *m
if (spi_handle->ErrorCode != HAL_SPI_ERROR_NONE)
{
state = HAL_ERROR;
need_abort = RT_TRUE;
LOG_E("SPI async transfer failed, error code: 0x%08x", spi_handle->ErrorCode);
goto transfer_cleanup;
rt_uint32_t err = spi_handle->ErrorCode;
rt_bool_t tx_only = (message->send_buf != RT_NULL) && (message->recv_buf == RT_NULL);
rt_bool_t ovr_only = ((err & HAL_SPI_ERROR_OVR) != 0U) && ((err & ~(HAL_SPI_ERROR_OVR | HAL_SPI_ERROR_ABORT)) == 0U);
/**
* Ignore the expected OVR from a completed Tx-only transfer.
*
* In 2-line SPI mode, Tx-only transfer still receives data from
* MISO. Since no RX buffer is provided, the received data is not
* read and HAL may latch OVR after async Tx completion.
*/
if (tx_only && ovr_only && (spi_handle->Init.Direction == SPI_DIRECTION_2LINES) && (spi_handle->TxXferCount == 0U))
{
__HAL_SPI_CLEAR_OVRFLAG(spi_handle);
spi_handle->ErrorCode = HAL_SPI_ERROR_NONE;
}
else
{
state = HAL_ERROR;
need_abort = RT_TRUE;
LOG_E("SPI async transfer failed, error code: 0x%08x", spi_handle->ErrorCode);
goto transfer_cleanup;
}
}
}
#endif /* BSP_SPI_USING_IRQ */