请教下，使用emwin 显示bmp图片时，有时显示出现硬件错误？

hpdell · 发表于 2018-3-14 21:19:00

本帖最后由 hpdell 于 2018-3-14 21:35 编辑

请教下，使用emwin 显示bmp图片时，有时显示出现硬件错误？是怎么个情况啊？

程序如下：

/*
*********************************************************************************************************
*       函数名: _ShowBMP2
*       功能说明: 显示BMP图片
*       形参: sFilename  要读取的文件名
*                   x  要显示的x轴坐标位置
*                   y  要显示的y轴坐标位置
*       返回值: 返回绘制了BMP图片的内存设备句柄。
*********************************************************************************************************
*/

GUI_HMEM _ShowBMP2(const char *sFilename, int x, int y)
{
  FRESULT result;
  UINT bw;
      char *_acBuffer;
      int XSize, YSize;
      GUI_HMEM hMem;
      GUI_MEMDEV_Handle hMemBMP;

      /* 打开文件 */
      result = f_open(&BMP_File, sFilename, FA_OPEN_EXISTING | FA_READ | FA_OPEN_ALWAYS);
      if (result != FR_OK)
      {
            return 0;
      }

      /* 申请一块内存空间并且将其清零 */
      hMem = GUI_ALLOC_AllocZero(BMP_File.obj.objsize);

      /* 将申请到内存的句柄转换成指针类型 */
      _acBuffer = GUI_ALLOC_h2p(hMem);

      /* 读取文件到动态内存 */
      result = f_read(&BMP_File, _acBuffer, BMP_File.obj.objsize, &bw);
      if (result != FR_OK)
      {
            return 0;
      }

      XSize = GUI_BMP_GetXSize(_acBuffer);
      YSize = GUI_BMP_GetYSize(_acBuffer);

      /* 创建内存设备，并将BMP图片绘制到此内存设备里面，此内存设备要在主程序中用到
         所以退出此函数前，不要释放。
      */
      hMemBMP = GUI_MEMDEV_CreateEx(0, 0, XSize, YSize, GUI_MEMDEV_HASTRANS);
      GUI_MEMDEV_Select(hMemBMP);
      GUI_BMP_Draw(_acBuffer, 0, 0);
      GUI_MEMDEV_Select(0);

      /* 释放动态内存hMem */
      GUI_ALLOC_Free(hMem);

      /* 关闭文件 */
      f_close(&BMP_File);

      return hMemBMP;
}

void GUI_BMP_DrawShow(const char *FileName, U16 _usX, U16 _usY)
{
GUI_MEMDEV_Handle hMemBMP;
uint32_t t0 = 0, t1 = 0;
char buf[50];

GUI_DispStringAt("Load BMP File to Memory Devices....", 10, 10);

/* 加载BMP图片到内存设备 */
hMemBMP = _ShowBMP2(FileName, 0, 0);

#if 1
t0 = GUI_GetTime();
// 用到BMP图片的时候，调用此函数即可
GUI_MEMDEV_WriteAt(hMemBMP, _usX, _usY);
t1 = GUI_GetTime() - t0;
printf("速度 = %dms\r\n", t1);

sprintf(buf, "speed = %dms/frame", t1);
#else
{
   uint32_t i, count = 0;
   //刷新20次，串口打印速度数值，时间单位ms
   for(i = 0; i < 20; i++)
   {
      t0 = GUI_GetTime();
      // 用到BMP图片的时候，调用此函数即可
      GUI_MEMDEV_WriteAt(hMemBMP, _usX, _usY);
      t1 = GUI_GetTime() - t0;
      printf("速度 = %dms\r\n", t1);
      count += t1;
   }
   /* 求出刷新20次的平均速度 */
   sprintf(buf, "speed = %dms/frame", count/i);
}

#endif

GUI_DispStringAt(buf, 10, 50);
}

int main(void)
{
/* BMP图片显示方式一：做到15ms一帧，实际项目强烈推荐 */

#if defined Method1
{
   GUI_BMP_DrawShow("0

icture/bmp/1024x600-6.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/320x480_32.bmp", (1024-320)/2, (600-480)/2);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/680x480_24.bmp", (1024-680)/2, (600-480)/2);  //屏幕中间显示
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/480x272_1.bmp", (1024-480)/2, (600-272)/2);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/480x272_4.bmp", (1024-480)/2, (600-272)/2);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/480x320_rgb565_16bit.bmp", (1024-480)/2, (600-320)/2);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/1024x600-rgb888-24bit-2.bmp", 0, 0);  //xx
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawExShow("0

icture/bmp/480x320_rgb555_16bit.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/480x320_rgb444_16bit.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0

icture/bmp/480x320_rgb8888_32bit_X.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0:Picture/bmp/480x272_rgb555_b_16bit.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0:Picture/bmp/A4R4G4B4.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0:Picture/bmp/480x272_rgb555_a_16bit.bmp", 0, 0);  // xx
   GUI_Delay(50);
   GUI_Clear();
   GUI_BMP_DrawShow("0:Picture/bmp/A1R5G5B5.bmp", 0, 0);
   GUI_Delay(50);
   GUI_Clear();
}

}

上术显示的bmp图片，出现死机的位置没有固定的，王大侠指点指点迷津？！！
// 错误会进入到这里来？？？？？？？？？？？？？？？？？？
void HardFault_Handler(void)
{
  /* USER CODE BEGIN HardFault_IRQn 0 */
  printf("HardFault_Handler Error ??????? \r\n");
  /* USER CODE END HardFault_IRQn 0 */
  while (1)
  {
  }
  /* USER CODE BEGIN HardFault_IRQn 1 */

  /* USER CODE END HardFault_IRQn 1 */
}