w5500和w25Q80同时使用出现hard fault问题

发布于 2019-08-29 18:39:00 浏览：1551 订阅该版

单片机使用STM32F103RET,时钟为16M,SPI1接以太网W5500，SPI2接FLASH W25Q80，利用FAL组件对FLASH实现分区管理，调试程序时，单独调，W25Q80和W5500都正常，把这两个放一块就会出现问题。

只有W5500：

打印：

```
 \ | /
- RT -     Thread Operating System
 / | \     4.0.2 build Aug 29 2019
 2006 - 2019 Copyright by rt-thread team
[32m[I/sal.skt] Socket Abstraction Layer initialize success.[0m
[32m[I/wiz] RT-Thread WIZnet package (V2.0.0) initialize success.[0m
```

只有W25Q80:

```c
rt_err_t nor_flash_init(void)
{
#define SPI_BUS_OF_W25QXX_NAME       "spi2"
#define SPI_W25QXX_DEVICE_NAME       "spi20"
#define SPI_W25QXX_CS_PIN            33

rt_spi_flash_device_t w25q8 = RT_NULL;
	struct rt_spi_device spi_dev_w25qxx;

rt_uint32_t spi_dev_w25qxx_cs_pin = SPI_W25QXX_CS_PIN;
    rt_pin_mode(spi_dev_w25qxx_cs_pin, PIN_MODE_OUTPUT);

rt_err_t res = -RT_ERROR;

//½«W25Qxx ¹ÒÔØµ½SPI ×ÜÏß2ÉÏ
	  res = rt_spi_bus_attach_device(&spi_dev_w25qxx, SPI_W25QXX_DEVICE_NAME, SPI_BUS_OF_W25QXX_NAME, (void*)&spi_dev_w25qxx_cs_pin);
    if (res == RT_EOK)
    {

w25q8 = rt_sfud_flash_probe("flash0", "spi20");

if (RT_NULL != w25q8)
	    {
				  
	        res = RT_EOK;
	    }
    }
    return res; 
}
```

打印

```
 \ | /
- RT -     Thread Operating System
 / | \     4.0.2 build Aug 29 2019
 2006 - 2019 Copyright by rt-thread team
[32m[I/sal.skt] Socket Abstraction Layer initialize success.[0m
[SFUD] Warning: The OS tick(100) is less than 1000. So the flash write will take more time.
[SFUD] Find a Winbond flash chip. Size is 1048576 bytes.
[SFUD] flash0 flash device is initialize success.
nor_flash0.blk_size = 4096

nor_flash0.addr = 0

nor_flash0.len = 1048576

同时含有W5500和W25Q80:

```c
int main(void)
{
	/* user app entry */

//
	
  nor_flash_init();
	
	fal_init();
	
	wiz_init();
	
	//test_tcpc_init();
	
	//uart_thread_init();
	while (1)
	{
	  rt_thread_mdelay(1000);
	}
    return 0;
}
```

报错：
![微信图片_20190829183453.png](/uploads/201908/29/183521zgbtp4o87i0hgj7p.png)

```
 \ | /
- RT -     Thread Operating System
 / | \     4.0.2 build Aug 29 2019
 2006 - 2019 Copyright by rt-thread team
[32m[I/sal.skt] Socket Abstraction Layer initialize success.[0m
[SFUD] Warning: The OS tick(100) is less than 1000. So the flash write will take more time.
[SFUD] Find a Winbond flash chip. Size is 1048576 bytes.
[SFUD] flash0 flash device is initialize success.
nor_flash0.blk_size = 4096

nor_flash0.addr = 0

nor_flash0.len = 1048576

thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
sys_work  23  ready   0x00000044 0x00000800    03%   0x0000000a 000
tidle0    31  ready   0x00000044 0x00000100    26%   0x00000020 000
main      10  running 0x00000044 0x00000800    25%   0x00000006 000
bus fault:
SCB_CFSR_BFSR:0x82 PRECISERR SCB->BFAR:31697067
```

之后定位错误位置是发现向SPI总线1挂载设备时程序出错了

```c
rt_err_t w5500_init(void)
{
#define SPI_BUS_OF_W5500_NAME       "spi1"
#define SPI_W5500_DEVICE_NAME       "spi10"
#define SPI_W5500_CS_PIN            20
	
	struct rt_spi_device spi_dev_w5500;
	
	//W25Qxx Æ¬Ñ¡Òý½Å¶¨Òå
    rt_uint32_t spi_dev_w5500_cs_pin = SPI_W25QXX_CS_PIN;
    rt_pin_mode(spi_dev_w5500_cs_pin, PIN_MODE_OUTPUT);
	
    rt_err_t res = -RT_ERROR;

//½«w5500 ¹ÒÔØµ½SPI ×ÜÏß1ÉÏ
	 ** res = rt_spi_bus_attach_device(&spi_dev_w5500, SPI_W5500_DEVICE_NAME, SPI_BUS_OF_W5500_NAME, (void*)&spi_dev_w5500_cs_pin);**
    if (res == RT_EOK)
    {

}
		
    return res; 
}
```

哪位大牛给帮帮忙