STM32F7 的CUBE中有显示JPG图像的例程，那么拿来显示下图像看看能否成功。
开发板上边是800*480的图像分辨率。所以我用2345看图王把平时打坦克世界的截图给截成800*400的JPG格式文件。
然后根据例程的要求：
我的库是装在：E:\360Downloads\STM32Cube_FW_F7_V1.5.0\Projects\STM32F769I-Discovery\Examples\JPEG
- - This example runs on STM32F769xx/STM32F779xx.
-
- - This example has been tested with STMicroelectronics STM32F769I_Discovery
- boards and can be easily tailored to any other supported device
- and development board.
-
- - STM32F769I_Discovery Set-up
- - Copy a jpg image to a uSD card (under the root)
- The image must have the following properties:
- - named as "image.jpg"
- - dimensions : less or equal to the LCD-DSI screen (i.e 800x480 for the STM32F769I_Discovery board)
- - Witdh : <= 800
- - Height : <= 480
- - Connect the uSD Card to the uSD connector (CN5).
可见是命名为image.jpg考到SD卡的根目录下边。
放好SD卡后下载编译好的程序，加电一瞬间先是黑屏然后突然就亮了。我想这是先关显示，等DMA2准备好了就刷屏。速度很快毫秒级。
以下是显示的图片，其实它不是800*480的但我用2345看图王改变尺寸变成了800*480的。
以下是效果图：
![IMG_0707[1].JPG](/data/attachment/forum/201701/04/220132nltkgfqslkylst9q.jpg "IMG_0707[1].JPG")
还有一个例程在E:\360Downloads\STM32Cube_FW_F7_V1.5.0\Projects\STM32F769I-Discovery\Applications\Display
这个是连续显示图片的。
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