Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
Hello,I would like to ask you few questions since I have some unclearances about STM32MP157F MPU:1. If 933MHz DDR3L RAM was connected to the MPU according to the schematic, will the MPU automatically underclock it to max 533MHz?2. Is it possible to c...
Recently I got a problem with RPMSG driver when M5 coprocessor restarts. Thanks to https://community.st.com/s/question/0D53W00000936uRSAQ/kernel-panic-with-pollselect-syscalls-on-virtual-uart-devices-to-m4-core-when-m4-watchdog-restarts?t=16321442601...
I am working on yocto project. I started with a custom board based on stm32mp157. You can find the board description in this link custom board. Vendor has a board support package in dunfell version. But I am doing my project in kirkstone version. I h...
Hi,I'm having some difficulty routing 1GB DDR3L memory with the STM32MP151DAC1. Both reference boards available for this product use different memory or pitch configurations. I found an Application Note, AN5122, that guides through memory routing, bu...
Hi,I find the 'STM32MP1_SeriesDDRmemory_routing_guidelines_layout_examples_V3.0' from ST's site.I've several questions: It seems the column 'STM32MP15XXAA LENGTH (mm)' is the package delay per pin, right?Actually, the delay is a time factor. But here...
Hi,Are there any references for configuring the I2S supply voltages in device trees for STM32MP135-DK.From the I2S module currently we are getting the output level as 5V, is that expected or is there any way to change that from 5V to 3.3V.
Hi,After reading the document I understand the interrupts are handled by pin#, and we set GPIOsel within EXTI_ConfigTypeDef.My question is how do we determine which port generates the interrupt?Suppose I use PA0 and PB0, and I only want to use one ca...
Hello!I am using the CortexM4 coprocesor on the STM32MP157F-DK2 to measure multiple ADC channels and update a control loop based on the values. I have set up ADC1 using the DMA2 in circular mode to read channels IN1, IN2, and IN4. I have a buffer set...
Hi Community,I realise that this may be a very newbie question:I have run all the steps as seen on the Wiki,I followed these steps to the letter: https://wiki.st.com/stm32mpu/wiki/PC_prerequisitesFolowed by:mkdir -p st/buildcd st/buildrepo init -u ht...
Hi,I'm searching any information about how exclusive access (LDREX / STREX instructions) is implemented in STM32MP157 silicon. Unfortunately, it seems that ST assumes that this information is obvious.Based on ARM documentation, the synchronization is...
