rt-thread/bsp/stm32/stm32mp157a-st-discovery/board/ports/spi_sample.c

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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-09-15 thread-liu first version
*/
#include "board.h"
#if defined(BSP_USING_SPI5)
#include <drv_spi.h>
#define SPI_NAME "spi50"
static struct rt_spi_device *spi_dev = RT_NULL;
/* attach spi5 device */
static int rt_spi_device_init(void)
{
struct rt_spi_configuration cfg;
rt_hw_spi_device_attach("spi5", "spi50", NULL, NULL);
cfg.data_width = 8;
cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB | RT_SPI_NO_CS;
cfg.max_hz = 1 *1000 *1000;
spi_dev = (struct rt_spi_device *)rt_device_find(SPI_NAME);
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if (RT_NULL == spi_dev)
{
rt_kprintf("spi sample run failed! can't find %s device!\n", SPI_NAME);
return RT_ERROR;
}
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rt_spi_configure(spi_dev, &cfg);
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return RT_EOK;
}
INIT_APP_EXPORT(rt_spi_device_init);
/* spi5 loopback mode test case */
static int spi_sample(int argc, char **argv)
{
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rt_uint8_t t_buf[8], r_buf[8];
int i = 0;
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static struct rt_spi_message msg1;
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if (argc != 9)
{
rt_kprintf("Usage:\n");
rt_kprintf("spi_sample 1 2 3 4 5 6 7 8\n");
return -RT_ERROR;
}
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for (i = 0; i < 8; i++)
{
t_buf[i] = atoi(argv[i+1]);
}
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msg1.send_buf = &t_buf;
msg1.recv_buf = &r_buf;
msg1.length = sizeof(t_buf);
msg1.cs_take = 1;
msg1.cs_release = 0;
msg1.next = RT_NULL;
rt_spi_transfer_message(spi_dev, &msg1);
rt_kprintf("spi rbuf : ");
for (i = 0; i < sizeof(t_buf); i++)
{
rt_kprintf("%x ", r_buf[i]);
}
rt_kprintf("\nspi loopback mode test over!\n");
return RT_EOK;
}
MSH_CMD_EXPORT(spi_sample, spi loopback test);
#endif /* BSP_USING_SPI5 */