commit 85990acbcc78e1f03b41191148882e40f44582a5
author Tasnim <tasnim.ouni@st.com> Fri Aug 18 10:18:14 2023 +0100
committer Tasnim <tasnim.ouni@st.com> Fri Aug 18 11:07:23 2023 +0100
tree 8b7db13f5a26107af74d6e113138af64c22dbe8f
parent 4e3f79f631a6b25291ed70894acedcd633e09e9d

[HAL][SPI] In Full Duplex mode, calling HAL_SPI_TransmitReceive_DMA() can generate a RX HDMA busy if HDMA TX is not well initialized. To avoid this, now a DMA abort is done on RX path to reset HDMA RX to ready state.

Src/stm32h7xx_hal_spi.c

diff --git a/Src/stm32h7xx_hal_spi.c b/Src/stm32h7xx_hal_spi.c
index 162b08a..5e38d94 100644
--- a/Src/stm32h7xx_hal_spi.c
+++ b/Src/stm32h7xx_hal_spi.c
@@ -2404,6 +2404,8 @@
   if (HAL_OK != HAL_DMA_Start_IT(hspi->hdmatx, (uint32_t)hspi->pTxBuffPtr, (uint32_t)&hspi->Instance->TXDR,
                                  hspi->TxXferCount))
   {
+    HAL_DMA_Abort(hspi->hdmarx);
+
     /* Update SPI error code */
     SET_BIT(hspi->ErrorCode, HAL_SPI_ERROR_DMA);