Riverdi STM32 Embedded 12.1" Display only displaying a blackscreen

[Julo]

Hello, how is everyone doing ?

 

I am making this post because I just received a Riverdi STM32 Embedded display for my last ever studying project, as I will use it to replace 7-seg, buttons and keybord. I made a simple connection for the power supply (I soldered two wires on the connector, to avoid cutting the given cable, as I want to use it later in the final version of my project. My problem is that when I turn on the power, the screen switches on but only displays a black screen at maximum brightness. I tried reseting the device with the back button, and also created a simple TouchGFX project to display a png image and the memory flash of the microcontroller with ST-Link v2 works fine but once the flash is done, the screen goes back to the very bright black screen state. 

I have made some research but have not found anything interesting, so I make this post hoping that someone already had this issue or has a solution. In the meantime I have also contacted Riverdi, but I want an answer as soon as possible, so I ask your community !

Thanks in advance.

[AScha.3]

Hi,

my magic crystal ball isn't working right now, so i dont know, what you have:

- a 12" TFT , ok,

but : with EVE chip, on SPI connected or ...? or custom board, or... ?

[Julo]

Hello,

I have order this one : https://riverdi.com/product/12-1-inch-lcd-display-stm32-embedded-display-capacitive-touch-panel-optical-bonding-tft-lcd-screen-stm32h7-rvt121hvsfwca0-b

It is not a custom board, it is a generic one, but I only wanted a mounting frame because I will need one. I don't really undrestand your first question, I am sorry ...

Also, the revision of my PCB is REV1.6, i hope that will help.

[AScha.3]

Hi,

so for this embedded TFT+cpu first: did you try using an example ?

-> https://riverdi.com/knowledge-base/stm32-getting-started

successful ?