Boot2Qt and CAN or SPI communication

Damian7546

I am testing Boot2Qt module together with STM32MP157F-DK2.
I prepared my first GUI in Qt Design Studio and deploy my application to target device

Now I would like to establish communication with CAN device slaves, but I have no idea where to start.

While analyzing the STM32MP157F-DK2 diagram, I noticed that I had an SPI interface available, so I logged to target device by ssh and listed SPI devices bo nothing found.

root@b2qt-stm32mp15-disco:~# ls -1 /dev/spi*
ls: /dev/spi*: No such file or directory

Can you give me any idea how add SPI or CAN driver to Boot2Qt system ?

Maybe simple question, how control GPIO from qt ?

Damian7546

@jsulm
@mrdebug
I probably found appropriate knowledge about approach to programming STM32MP1.
The STM32MP1 series is based on Cortex-A7 and Cortex-M4 cores architecture.

First Way:
First of those (Cortex-A7) is required to create GUI (ex. Boot2Qt) .
But second one (Cortex-M4) is required to communicate with STM32 peripheral (ex. by STM32CubeProgrammer).
Data processed in Cortex-M4 can be send to GUI (Cortex-M7) over the “Inter processor Communications” (IPC) virtual UART.

Second Way:
All programing by userspace Linux .... -> desktop PC-like approach to programming ?

mrdebug

Hi, this is not related to Qt. I suggest you to ask in ST forums related to your mcu.
Have you installed STM32CubeMX? Maybe you have got a sub folder with examples about gpio usage.

Damian7546

So, the logic , for example control DI DO , I need STM32CubeMX to programing in? , not form C++ , qt ?

mrdebug

I haven't got experience with your device.
I the past I made a project for raspberry pi where the gui was made in Qt.
To manage the GPIOs and the spi I used a specified library for raspberry pi.
I think your device is similar.
I think that Qt can't support each device that has got a spi, i2c or gpio interfaces.
Have you check in the stm forums?

Damian7546

So, you included library for raspberry pi (ex. "wiringPi") to qt creator and controled GPIO from the qt level?

jsulm

@Damian7546 You don't include a library "to QtCreator", you link the library to your application and use it like any other.
"controled GPIO from the qt level" - this has nothing to do with Qt, you use that library in your C++ code.

Damian7546

So, on my host machine (where I have qt and qtCreator) additionaly I should install SDK (STM32MP1 OpenSTLinux Developer Package Sources) to my STM32 and link downloaded library to my project in qt Creator ?
[https://www.st.com/en/embedded-software/stm32mp1dev.html#get-software](link url)

Damian7546

@jsulm
@mrdebug
I probably found appropriate knowledge about approach to programming STM32MP1.
The STM32MP1 series is based on Cortex-A7 and Cortex-M4 cores architecture.

First Way:
First of those (Cortex-A7) is required to create GUI (ex. Boot2Qt) .
But second one (Cortex-M4) is required to communicate with STM32 peripheral (ex. by STM32CubeProgrammer).
Data processed in Cortex-M4 can be send to GUI (Cortex-M7) over the “Inter processor Communications” (IPC) virtual UART.

Second Way:
All programing by userspace Linux .... -> desktop PC-like approach to programming ?