From 0b1b5497426f6e2b15cd7f1ec5b1fe61defb5499 Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Thu, 31 May 2018 17:14:08 +0800
Subject: [PATCH] [bsp][stm32f429-apollo] Disable the SPI DMA mode. It has some
 problem when using big data transmission.

---
 bsp/stm32f429-apollo/drivers/drv_spi.c | 4 ++++
 bsp/stm32f429-apollo/drivers/drv_spi.h | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/bsp/stm32f429-apollo/drivers/drv_spi.c b/bsp/stm32f429-apollo/drivers/drv_spi.c
index e7b547cce..a82454d90 100644
--- a/bsp/stm32f429-apollo/drivers/drv_spi.c
+++ b/bsp/stm32f429-apollo/drivers/drv_spi.c
@@ -526,6 +526,7 @@ struct stm32f4_spi stm32f4_spi5 =
     /* .spi_handle = */{
         /* .Instance = */ SPI5,
     },
+#ifdef SPI_USE_DMA
     /* .hdma_rx = */ {   
         DMA2_Stream3,
         DMA_CHANNEL_2,
@@ -537,6 +538,7 @@ struct stm32f4_spi stm32f4_spi5 =
         DMA_CHANNEL_2,
     },
     /* .hdma_tx_irq = */ DMA2_Stream4_IRQn,
+#endif /* SPI_USE_DMA */
 };
 
 static struct rt_spi_bus spi5_bus;
@@ -703,6 +705,7 @@ rt_err_t stm32_spi_bus_register(SPI_TypeDef * SPI,
         return RT_ENOSYS;
     }
     
+#ifdef SPI_USE_DMA
     /* Configure the DMA handler for Transmission process */
     p_spi_bus->hdma_tx.Init.Direction           = DMA_MEMORY_TO_PERIPH;
     p_spi_bus->hdma_tx.Init.PeriphInc           = DMA_PINC_DISABLE;
@@ -727,6 +730,7 @@ rt_err_t stm32_spi_bus_register(SPI_TypeDef * SPI,
     p_spi_bus->hdma_rx.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;
     p_spi_bus->hdma_rx.Init.MemBurst            = DMA_MBURST_INC4;
     p_spi_bus->hdma_rx.Init.PeriphBurst         = DMA_PBURST_INC4;
+#endif /* SPI_USE_DMA */
 
     spi_bus->parent.user_data = &stm32f4_spi5;
     
diff --git a/bsp/stm32f429-apollo/drivers/drv_spi.h b/bsp/stm32f429-apollo/drivers/drv_spi.h
index 8967b4b98..8c74fdb62 100644
--- a/bsp/stm32f429-apollo/drivers/drv_spi.h
+++ b/bsp/stm32f429-apollo/drivers/drv_spi.h
@@ -20,7 +20,7 @@
 
 #include "stm32f4xx_hal.h"
 
-#define SPI_USE_DMA
+//#define SPI_USE_DMA
 
 struct stm32f4_spi
 {
-- 
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