AT32F403A SPI配置问题

发布于 2023-06-16 16:34:13 浏览：971 订阅该版

JonasWen 2023-06-20

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VGSP_1990 2023-06-20

这家伙很懒，什么也没写！

JonasWen 2023-06-20

这家伙不懒，但是什么也不想写！

VGSP_1990 2023-06-20

这家伙很懒，什么也没写！

VGSP_1990 2023-06-20

这家伙很懒，什么也没写！

JonasWen 2023-06-20

这家伙不懒，但是什么也不想写！

VGSP_1990 2023-06-21

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VGSP_1990 2023-07-06

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VGSP_1990 2023-07-06

这家伙很懒，什么也没写！

//SPI
#define SPI_DEV_NAME     "spi4"
const char * device_name = "spi04";
#include <at32f403a_407_gpio.h>

void spi_test(void)
{
       struct rt_spi_device *spi_dev_w25q;

rt_uint8_t id[5] = {0};
       struct rt_spi_message msg1, msg2;
       rt_uint8_t w25_read_id = 0x9F;
       int res  = 0;

res = rt_hw_spi_device_attach("spi4", device_name, GPIOE, GPIO_PINS_4);

/* 查找 spi 设备获取设备句柄 */
       spi_dev_w25q = (struct rt_spi_device *)rt_device_find(SPI_DEV_NAME);
       if (!spi_dev_w25q)
       {
           rt_kprintf("spi sample run failed! can't find %s device!\n", SPI_DEV_NAME);
       }
       else
       {
           struct rt_spi_configuration cfg;
           cfg.data_width = 8;
           cfg.max_hz =1 * 100* 1000;
           cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB;

rt_spi_configure(spi_dev_w25q, &cfg);

/* 方式1：使用 rt_spi_send_then_recv()发送命令读取ID */
           //rt_spi_send_then_recv(spi_dev_w25q, &w25x_read_id, 1, id, 5);
           //rt_kprintf("use rt_spi_send_then_recv() read w25q ID is:%x%x\n", id[3], id[4]);
       }

msg1.send_buf = &w25_read_id;
       msg1.recv_buf = RT_NULL;
       msg1.length = 1;
       msg1.cs_take = 1;
       msg1.cs_release = 0;
       msg1.next = &msg2;

msg2.send_buf = RT_NULL;
       msg2.recv_buf = id;
       msg2.length = 5;
       msg2.cs_take = 0;
       msg2.cs_release = 1;
       msg2.next = RT_NULL;

rt_spi_transfer_message(spi_dev_w25q, &msg1);
      rt_kprintf("%x %x",id[3],id[4]);

}