stm32h7/spi/SpiComIF.cpp

@@ -232,6 +232,12 @@ ReturnValue_t SpiComIF::handleIrqSendOperation(uint8_t *recvPtr, SpiCookie *spiC
     // yet another HAL driver which is not const-correct..
     HAL_StatusTypeDef status = HAL_OK;
     if(transferMode == spi::TransferModes::DMA) {
+        if(cacheMaintenanceOnTxBuffer) {
+            /* Clean D-cache. Make sure the address is 32-byte aligned and add 32-bytes to length,
+            in case it overlaps cacheline */
+            SCB_CleanDCache_by_Addr((uint32_t*)(((uint32_t) sendData ) & ~(uint32_t)0x1F),
+                    sendLen + 32);
+        }
         status = HAL_SPI_TransmitReceive_DMA(spiHandle, const_cast<uint8_t*>(sendData),
                 currentRecvPtr, sendLen);
     }