求解？

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楼主

怎么叫都可以|

楼主 | 2019-11-20 11:26 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

buffer, GUI, ui, rc, AC

为什么这代码，加了红色部分代码才可以正常的运行显示？

void Lcd_show_bmp(unsigned short int x, unsigned short int y,unsigned char *pic_name)
{
      int i, j, k;

   GUI_HMEM hMem;
   char *_acBuffer2;
      BYTE jj[3000];

      unsigned int read_num;
      unsigned char tmp_name[20];
      sprintf((char*)tmp_name,&quot;0:%s&quot;,pic_name);

      _acBuffer2 = (char *)(0x680c0000);

      f_mount(0, &bmpfs[0]);

      bmpres = f_open( &bmpfsrc , (char *)tmp_name, FA_OPEN_EXISTING | FA_READ | FA_OPEN_ALWAYS);
/*-------------------------------------------------------------------------------------------------------*/

      f_read(&bmpfsrc, _acBuffer2 ,bmpfsrc.fsize,&read_num);
      for(i=0;i<100;i++)
      printf(&quot;%c&quot;,*(_acBuffer2+i));

      GUI_BMP_Draw(_acBuffer2,0,0);
      GUI_BMP_DrawScaled(_acBuffer2,0,0,2,3);
      GUI_BMP_DrawScaled(_acBuffer2,0,0,1,3);
      f_close(&bmpfsrc);
}
int main(void)
{

            USART1_Config();
            //printf(&quot;\r\n this is a fatfs test demo \r\n&quot;);

            LCD_Init();

            SysTick_Init();

            Sd_fs_init();

            FSMC_SRAM_Init();

      RCC_AHBPeriphClockCmd(RCC_AHBPeriph_CRC, ENABLE);

            GUI_Init();

            Lcd_show_bmp(0, 0,&quot;lxh.bmp&quot;);

            GUI_DispString(&quot;www.armfly.com \navailable&quot;);

            while(1)
            {
                     GUI_Delay(100);
            }
}

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