STM32F746G-Disco Board // TouchGFX // DAC Issue

[UWall.2]

I have created a simple TouchGFX GUI on my STM32F746G-Disco Board. Everything works well. In my project I need a DAC . So I switched on DAC1 in CubeMX. But when I do so and flashing the code to the Board the screen do not show the genereated UI anymore. Even when I switch off the DAC, the screen remains blank. What is the Problem there and how can I solve it?

[MM..1]

You create project in TGFX ? Then reconfig in CubeMX isnt simple job.

[Peter BENSCH · Accepted solution]

The aim of DISCOVERY is to show the performance of the respective STM32, which usually involves connecting a large number of pins of the STM32 to external sensors etc. Therefore, you have to carefully check whether the respective periphery can still be connected to a pin.

In the case of the STM32F746G-DISCO, the DAC can no longer be used freely because the DAC pins are already occupied and cannot be routed to other pins.

Regards

/Peter

[Cedric Wizard]

Hello,

• If somebody find the solution for this issue ? Can you share your solution please ?

I am using :

• CubeMx version 6.7
• Cube IDE version 1.11.2
• TouchGFX designer 4.21.3
• STM32H745 DISC0 board

My first project without ADC was working well. I was able to display animation on the HMI. But since I added the ADC, the screen is blank. After debug, I can see the tasks are running well, even the TouchGFX task also is running. But the display is blank.

I checked the pins and the pin PA0_C of my ADC is not in conflict. So I guess that the issue is coming from another side ?