Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
I'm developing an IoT device for a customer and I have an external Bluetooth SoC connected to the ST's MCU via UART. The BT SoC shares its UART Tx pin with reset functionality so I need to develop a driver to momentarily turn the UART to GPIO mode to...
HelloI'm going to create and flash my custom board with CubeMx. But I don't know how to modify the dtb file.Can you give me a link or a way to get the right help?
Hi,Is STM32MP1 is able to drive two displays at once , one via DSI and another via RGB is it possible? Following are the combinations :RGB to HDMI ---- to drive HDMI display.DSI to HDMI ----- to drive HDMI display.RGB to LVDS ----- to Drive LVDS disp...
I want to control a GPIO before u-boot, so how to control in TF-A?
We are building a custom embedded system based on STM32MP1 using customised OpenSTLinux. We are currently using the st-image-core as a starting point but we found it already heavy.Is there any option or other images providing a smaller image ?Also h...
We are using OpenSTLinux to generate a custom image for our custom board. This board has no wifi nor bluetooth so we would like to remove it's support.Our machine conf file is based on stm32mp1-eval.conf with the following edition (commenting wifi an...
Hi,I am trying to develop something around the STM32MP1.For that I have made some changes in the dts file via cubeMx and followed the process of building it given here.What is the location where the dtb file generated ? My arch/arm/boot/dts folder lo...
currently i have a pin <STM32_PINMUX('F', 14, GPIO)> how to mux as a GPIO before using as a gpiolib, export work fine, but i2c4 is not working but i can see GPIO is getting based on sys gpiolib. as before export i see PF14 line is muxed as pin 94 (P...
I am trying to verify my build environment by building the U-boot code samples to be able to run the DDR Tuning tests.First I start CubeMX (using the ubuntu image provided on one of your workshops) and under tools i choose the DDR Test Suite and sele...
Hi everyone.I have an already-designed PCB with an STM32MP157 on it. In order to communicate with an external device, I am using USART1. At the same time, I'm using an USB OTG port to connect my device to my PC.My problem is that USART1 is working wi...
