瑞萨RA2L1 SPI相关问题

发布于 2022-10-16 15:19:18 浏览：646 订阅该版

以 此https://github.com/Rbb666/renesas_touch_demo 仓库为基础,在env工具中打开SPI驱动,然后在RA Smart Config 中设置好SPI0之后,在hal_entry.c中加入以下代码

```c
void spi_test(void *parameter)
{
    struct rt_spi_device *my_spi;
    struct rt_spi_configuration cfg;
    int cs=10;
    rt_uint8_t mssg = 0xf1;
    rt_uint8_t w25x_read_id = 0xf1;
    rt_uint8_t id[5] = {0};

my_spi = (struct rt_spi_device *)malloc(sizeof(struct rt_spi_device));

rt_spi_bus_attach_device(my_spi,"spi01","spi0",&cs);

my_spi = (struct rt_spi_device *)rt_device_find("spi01");

cfg.data_width = 8;
    cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB|RT_SPI_NO_CS;
    cfg.max_hz = 20 * 1000 *1000;

rt_kprintf("1\r\n");
    rt_spi_configure(my_spi,&cfg);
    rt_kprintf("2\r\n");
    my_spi->bus->owner = my_spi;
    struct rt_spi_message msg1,msg2;
    msg1.send_buf   = &w25x_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_thread_mdelay(500);
    rt_kprintf("3\r\n");
    rt_spi_transfer_message(my_spi,&msg1);
    //rt_spi_transfer(my_spi,&mssg,RT_NULL,sizeof(mssg));
    //rt_spi_send(my_spi,&mssg,8);
    rt_kprintf("4\r\n");
}
MSH_CMD_EXPORT(spi_test,spi_test);
```

编译后下到板子里,hal_entry()中调用此函数,报如下错误
```
psr: 0x81000000
 pc: 0x00007c4c
 lr: 0x00002a23
r12: 0x00000000
r03: 0x00000000
r02: 0x00000000
r01: 0x00000937
r00: 0x00000007
hard fault on thread: main
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
touch     10  suspend 0x00000080 0x00000200    50%   0x00000027 OK
tshell    20  suspend 0x00000098 0x00001000    04%   0x00000009 OK
tidle0    31  ready   0x00000054 0x00000100    32%   0x00000016 OK
timer      4  suspend 0x00000048 0x00000200    14%   0x00000009 OK
main      10  running 0x000000b8 0x00001000    05%   0x00000014 OK
```

此代码我在STM32中测试过,是可以正常使用的.

之后通过打log,发现问题出在了

```c
rt_spi_transfer_message(my_spi,&msg1);
```

不知道怎么解决这个问题,或者是我哪里写的有问题.