From 16382412973c469d87132ef7b661d86b6766e59f Mon Sep 17 00:00:00 2001
From: "Man, Jianting (Meco)" <920369182@qq.com>
Date: Wed, 31 May 2023 21:54:45 -0400
Subject: [stm32][drv_spi] 优化spi单工发送, 不对接收buffer操作
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否则可能影响上层应用的接收/发送buffer

attach: afcc400
---
 bsp/stm32/libraries/HAL_Drivers/drv_spi.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_spi.c b/bsp/stm32/libraries/HAL_Drivers/drv_spi.c
index 40d7d58dac..fc2690ac97 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_spi.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_spi.c
@@ -367,7 +367,6 @@ static rt_ssize_t spixfer(struct rt_spi_device *device, struct rt_spi_message *m
             else if ((spi_drv->spi_dma_flag & SPI_USING_TX_DMA_FLAG))
             {
                 /* same as Tx ONLY. It will not receive SPI data any more. */
-                rt_memset((uint8_t *)recv_buf, 0xff, send_length);
                 state = HAL_SPI_Transmit_DMA(spi_handle, (uint8_t *)send_buf, send_length);
             }
             else if ((spi_drv->spi_dma_flag & SPI_USING_RX_DMA_FLAG))
-- 
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