stemwin

STM32H743移植emwin出现的问题

发布于 2022-08-09 17:47:39 浏览：148 订阅该版

直接使用env工具下载emwin包和例程，这是GUI_test.c的代码
```c
#include "GUI_Test.h"
#include "GUI.h"
#include "GUIDemo.h"

static void test_thread(void *param)
{
    CRC_HandleTypeDef   CrcHandle;
    CrcHandle.Instance = CRC; 
    HAL_CRC_Init(&CrcHandle);
    GUI_Init();

GUIDEMO_Main();
}

static int gui_test_init(void)
{
    rt_thread_t tid;
    tid = rt_thread_create("gui_test",
                           test_thread, RT_NULL,
                           2048,
                           RT_THREAD_PRIORITY_MAX - 2, 10);
    if (tid != RT_NULL)
        rt_thread_startup(tid);
    return RT_EOK;
}
INIT_APP_EXPORT(gui_test_init);
```
编译烧录之后，串口日志报错
![1660038164465.png](https://oss-club.rt-thread.org/uploads/20220809/fbff38f0dd6f6086bb0030196d1392bb.png "1660038164465.png")

在drv_sdram.c文件中，使用msh命令调用
```c
int sdram_test(void)
{
    int i = 0;
    uint32_t start_time = 0, time_cast = 0;
#if SDRAM_DATA_WIDTH == 8
    char data_width = 1;
    uint8_t data = 0;
#elif SDRAM_DATA_WIDTH == 16
    char data_width = 2;
    uint16_t data = 0;
#else
    char data_width = 4;
    uint32_t data = 0;
#endif

/* write data */
    LOG_D("Writing the %ld bytes data, waiting....", SDRAM_SIZE);
    start_time = rt_tick_get();
    for (i = 0; i < SDRAM_SIZE / data_width; i++)
    {
#if SDRAM_DATA_WIDTH == 8
        *(__IO uint8_t *)(SDRAM_BANK_ADDR + i * data_width) = (uint8_t)0x55;
#elif SDRAM_DATA_WIDTH == 16
        *(__IO uint16_t *)(SDRAM_BANK_ADDR + i * data_width) = (uint16_t)0x5555;
#else
        *(__IO uint32_t *)(SDRAM_BANK_ADDR + i * data_width) = (uint32_t)0x55555555;
#endif
    }
    time_cast = rt_tick_get() - start_time;
    LOG_D("Write data success, total time: %d.%03dS.", time_cast / RT_TICK_PER_SECOND,
          time_cast % RT_TICK_PER_SECOND / ((RT_TICK_PER_SECOND * 1 + 999) / 1000));

/* read data */
    LOG_D("start Reading and verifying data, waiting....");
    for (i = 0; i < SDRAM_SIZE / data_width; i++)
    {
#if SDRAM_DATA_WIDTH == 8
        data = *(__IO uint8_t *)(SDRAM_BANK_ADDR + i * data_width);
        if (data != 0x55)
        {
            LOG_E("SDRAM test failed!");
            break;
        }
#elif SDRAM_DATA_WIDTH == 16
        data = *(__IO uint16_t *)(SDRAM_BANK_ADDR + i * data_width);
        if (data != 0x5555)
        {
            LOG_E("SDRAM test failed!");
						LOG_E("error data is %X position is %d", data, i);
            break;
        }
#else
        data = *(__IO uint32_t *)(SDRAM_BANK_ADDR + i * data_width);
        if (data != 0x55555555)
        {
            LOG_E("SDRAM test failed!");
            break;
        }
#endif
    }

if (i >= SDRAM_SIZE / data_width)
    {
        LOG_D("SDRAM test success!");
    }

return RT_EOK;
}
MSH_CMD_EXPORT(sdram_test, sdram test)
```
调用这个sdram_test会报错

![1660038386312.png](https://oss-club.rt-thread.org/uploads/20220809/e6ab10aaf36f3bd7c749a891055d8475.png "1660038386312.png")

但是裸机操作sdram是没有问题的，所以可以排除硬件问题。