w801 spi 读取数据失败

测试在板子上进行, 无飞线
重新开个 sdk 测试了下, 发现与 flashdb 无关, 与 flash 读取有关, 以下测试代码能稳定复现:

/***************************************************************************** 
* 
* File Name :  main. c
* 
* Description:  main 
* 
* Copyright  (c)  2014 Winner Micro Electronic Design Co. ,  Ltd.  
* All rights reserved.  
* 
* Author :  dave
* 
* Date :  2014-6-14
*****************************************************************************/ 
#include "wm_include. h"
#include "wm_internal_flash. h"

int master_spi_send_data (int clk,  int type) ; 

#define SPI_TT  ({\
    if (! spi_testttt () ) {\
        printf ("spi errrr: %s: %d! ", __FUNCTION__, __LINE__) ; \
        while (1) ; \
    }\
}) ; 
extern uint8_t spi_testttt (void) ; 



uint8_t spi_testttt (void) {
    uint8_t data = 0, addr = 0x04; 
    tls_gpio_write (WM_IO_PB_18, 0) ; 
    tls_spi_read_with_cmd (&addr, 1, &data, 1) ; 
    tls_gpio_write (WM_IO_PB_18, 1) ; 
    printf ("read: 0x%x\n", data) ; 
    return ! ! data; 
}


void UserMain (void) 
{
    printf ("\n user task \n") ; 

    master_spi_send_data (1000000, 2) ; 
    
    uint32_t offset = 0x1e0000 | INSIDE_FLS_BASE_ADDR; 
//    uint32_t offset = 0x1e0000; 
    uint8_t buf[100] = {0}; 
    while (1) {
        tls_fls_read (offset, buf, 32) ; 
        SPI_TT
        vTaskDelay (100) ; 
    }

#if DEMO_CONSOLE
    CreateDemoTask () ; 
#endif
//用户自己的 task
}

int master_spi_send_data (int clk,  int type) 
{
    int *p; 
    int i; 

    /*MASTER SPI configuratioin*/
    wm_spi_ck_config (WM_IO_PB_24) ; 
    wm_spi_di_config (WM_IO_PB_25) ; 
    wm_spi_do_config (WM_IO_PB_26) ; 
    tls_gpio_cfg (WM_IO_PB_18, WM_GPIO_DIR_OUTPUT, WM_GPIO_ATTR_PULLHIGH) ; 
    tls_gpio_write (WM_IO_PB_18, 1) ; //cs
    tls_gpio_cfg (WM_IO_PB_17, WM_GPIO_DIR_OUTPUT, WM_GPIO_ATTR_PULLHIGH) ; 
    tls_gpio_write (WM_IO_PB_17, 1) ; //nrst
    printf ("\r\n") ; 
    printf ("cs--PB04,  ck--PB02,  di--PB03,  do--PB05; \r\n") ; 
    
    if  (clk   0) 
    {
        clk = 1000000;           /* default 1M */
    }
    if  (-1 == type) 
    {
        type = 0; 
    }

    if  (0 == type) 
    {
        tls_spi_trans_type (0) ; 
    }
    else
    {
        tls_spi_trans_type (2) ; 
    }

    tls_spi_setup (TLS_SPI_MODE_0,  TLS_SPI_CS_LOW,  clk) ; 

    vTaskDelay (1) ; 

    tls_gpio_write (WM_IO_PB_18, 0) ; 
    uint8_t data = 0; 
    data = 5; 
    tls_spi_write ( (u8 *) &data,  1) ; 
    data = 1; 
    tls_spi_write ( (u8 *) &data,  1) ; 
    tls_gpio_write (WM_IO_PB_18, 1) ; 

    vTaskDelay (1) ; 

    data = 4; 
    tls_gpio_write (WM_IO_PB_18, 0) ; 
    tls_spi_write ( (u8 *) &data,  1) ; 
    if (tls_spi_read (&data, 1)  ! = TLS_SPI_STATUS_OK) {
        printf ("spi err\n") ; 
    }
    tls_gpio_write (WM_IO_PB_18, 1) ; 
    
    printf ("spi read: 0x%x\n", data) ; 
    return WM_SUCCESS; 
}

日志截图:

逻辑分析仪截图:

@ggggjh 这两个并没有关系, 我找了一个 spi 外接 flash 的板子, 按照这个代码简单修改了, 测试并没有出错.

@abcd 你修改后 di 的引脚是哪一个? 我找了块没有外设的 801 开发板测试, 将 di 初始化为不同 io 并短到 3. 3, 当我初始化 di 为 PB0, PB16, PB25 时会出现读值由 0xff 变为 0x00 的情况, 但是初始化为 PB03 时确实读出都是 0xff 正常值没有 0 的情况.

@ggggjh 用了 PB25 也没错, 试下把 wm_main. c 里 wm_gpio_config 里 spi pin 初始化注掉.

@abcd 屏蔽了测试确实没问题了