h7 sdmmc: flush d-cache on read

iNavFlight · Dec 7, 2024 · 83c7a9e · 83c7a9e
1 parent a4eba5e
commit 83c7a9e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/main/drivers/sdcard/sdmmc_sdio_h7xx.c b/src/main/drivers/sdcard/sdmmc_sdio_h7xx.c
@@ -570,6 +570,9 @@ SD_Error_t SD_ReadBlocks_DMA(uint64_t ReadAddress, uint32_t *buffer, uint32_t Bl
     sdReadParameters.BlockSize = BlockSize;
     sdReadParameters.NumberOfBlocks = NumberOfBlocks;
 
+    // Ensure the data is flushed to main memory
+    SCB_CleanDCache_by_Addr(buffer, NumberOfBlocks * BlockSize);
+
     HAL_StatusTypeDef status;
     if ((status = HAL_SD_ReadBlocks_DMA(&hsd1, (uint8_t *)buffer, ReadAddress, NumberOfBlocks)) != HAL_OK) {
         return SD_ERROR;