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[BSP][stm32] Add 3 wires SPI driver support.

This commit is contained in:
armink 2020-06-13 11:58:28 +08:00
parent 6a9e081ec5
commit 673662656a
1 changed files with 12 additions and 3 deletions
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15
bsp/stm32/libraries/HAL_Drivers/drv_spi.c
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@ -11,12 +11,13 @@
* 2020-01-15 whj4674672 Porting for stm32h7xx
*/
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#ifdef RT_USING_SPI
#if defined(BSP_USING_SPI1) || defined(BSP_USING_SPI2) || defined(BSP_USING_SPI3) || defined(BSP_USING_SPI4) || defined(BSP_USING_SPI5) || defined(BSP_USING_SPI6)
/* this driver can be disabled at menuconfig → RT-Thread Components → Device Drivers */
#include "drv_spi.h"
#include "drv_config.h"
@ -278,7 +279,7 @@ static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *
SPI_HandleTypeDef *spi_handle = &spi_drv->handle;
struct stm32_hw_spi_cs *cs = device->parent.user_data;
if (message->cs_take)
if (message->cs_take && !(device->config.mode & RT_SPI_NO_CS))
{
HAL_GPIO_WritePin(cs->GPIOx, cs->GPIO_Pin, GPIO_PIN_RESET);
}
@ -333,6 +334,12 @@ static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *
{
state = HAL_SPI_Transmit(spi_handle, (uint8_t *)send_buf, send_length, 1000);
}
if (message->cs_release && (device->config.mode & RT_SPI_3WIRE))
{
/* release the CS by disable SPI when using 3 wires SPI */
__HAL_SPI_DISABLE(spi_handle);
}
}
else
{
@ -343,6 +350,8 @@ static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *
}
else
{
/* clear the old error flag */
__HAL_SPI_CLEAR_OVRFLAG(spi_handle);
state = HAL_SPI_Receive(spi_handle, (uint8_t *)recv_buf, send_length, 1000);
}
}
@ -364,7 +373,7 @@ static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *
while (HAL_SPI_GetState(spi_handle) != HAL_SPI_STATE_READY);
}
if (message->cs_release)
if (message->cs_release && !(device->config.mode & RT_SPI_NO_CS))
{
HAL_GPIO_WritePin(cs->GPIOx, cs->GPIO_Pin, GPIO_PIN_SET);
}