Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
I am using UART over RS-485 on an STM32MP153AAB3.The communication fails because the actual baudrate is off from the specified baudrate. With a specified baudrate of 9600 Bits/s, I am getting an actual baudrate of 9970 Bits/s, as you can see here (ti...
Hello, I use Optee on a stm32mp157f-dk2 board, version is the and the corresponding BSP :optee-os 3.16.0-stm32mpu-boot v2021.10-stm32mpLinux v5.15-stm32mpAll my changes are committed and built using a yocto meta-layer : https://github.com/embetrix/m...
I want the cortex-m4 to do pwmget data from sensors and transfer to cortex-A7So, I write simple code to do PWM and find out the RCC in stm32cubeIDE not work because linux take control the clock config.My question is, What is the best way to configure...
Hi,I try to connect ADC channels with libiio for my custom board based on the stm32mp157caa3. I followed the instructions from the linkhttps://wiki.st.com/stm32mpu/wiki/IIO_libiiohttps://wiki.st.com/stm32mpu/wiki/ADC_device_tree_configuration#DT_conf...
Hi,I upgraded the image for our custom board to 4.1 last week. After fixing the sw issuesconcerning the recipe syntax changes i have now problems to boot the new image.Info: Our board does not use PMIC but static voltage configuration:/ { model =...
Can ST please provide a guide for bringing up a custom board without using the STPMIC? We are extremely space constrained and unable to fit the PMIC. For our use case we just want simple LDO's with bucks as required.There is no material I can find th...
We are bringing up a custom board with LPDDR2 and no STPMIC. I have been following the bring up guide and have gotten past disabling I2C4 and fixing the HSE clock issue in the device tree. I have merged in quite a few things from dev kit 'working' de...
I am puzzled with a curious build problem:The recipe gcc-arm-none-eabi-native downloads gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2 but the download finishes to early (at 100MB instead of 150MB). Therefore the checksum check fails.BUT:If I co...
Datasheet says STM32MP15xx has ADC but here seem no ADC.I am not sure if I am missing something.
We can use devmem to read/write all gpio port registers except for portZ.We know this port relates to secure. is there any way to remove secure feature on this port so we can use devmem on this port?Thanks
