Thanks, I found a solution. I used the wrong driver chip!
BR
NiiJyeni
> 2019年12月24日 下午4:48，Sebastien Lorquet <sebast...@lorquet.fr> 写道：
>
> hello
>
> IIRC the config menus allow you to flip the display direction. Did you have a
> look over there?
>
> Sebastien
>
> Le 24/12/2019 à 08:39, Nii Jyeni a écrit :
>> Hi~
>> I am trying the graphics module of nuttx. I just used the nxtext sample
>> program and found that the text displayed on oled is reversed. It seems that
>> each character is flipped vertically. Does anyone know what is going on
>> here? how should I solve this? Thank you!
>>
>> BOARD:STM32F407VE（compatible stm32f4discovery）
>> HOST:macOS
