Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
I realize this is probably a pretty basic question but I haven't found a way to have the M4 portion of the firmware startup when the STM32MP1 is powered up. I'm currently using an STM32MP157D-DK1 board, if that helps. I was able to debug the code of...
Hi! I am working with stm32mp157c-dk2 and trying to establish communication between m4 and a7 cores. I analyze standard examples for this purpose, namely OpenAMP_TTY_echo. VIRT_UART initialization is presented here for m4 core: log_info("Virtual UAR...
Hello, I've tried measure period of GPS PPS which is very high accuracy. I'm using TIM5 input capture mode, reset slave mode. The TIM5 CCR1 gives value 208877646 that is wrong because I use high accurate generator for sys clock. The right value is a...
Hello,I'm working with the STM32MP15 and have found a problem with USART1 during the boot process on a secure boot enabled (TZEN) hardware. The system freezes when U-Boot tries to reset USART1.The problem is with the RCC_APB5RSTSETR register (0x188)....
Dears,I use STM32MP151FAD3 together with STPMIC1. Nowdays I monitored the voltage of vddcore and found it's not stable shown as below.Mostly it's around 1.2v while sometimes it's up to 1.33v .Referring to documentation, I guess it's casued by dynamic...
I have a custom board based on stm32mp157f-ev1 and stm32mp157f-dk2 board.In my custom layer:meta-st/meta-st-openstlinux/conf/distro/* copied and a new distro created based openstlinux-weston.confmeta-st/meta-st-stm32mp/conf/machine/* copied and a new...
Hello,I need to change the SD card interface voltage on stm32mp157f-evl board.As per my understanding we can control this via uSD_LDO_SEL, it can be 2.9volts or 1.8 volts.I need to change to 1.8 volts, how can one control this one via software?Warm r...
On STM32F4 has this and it is very easy to use. Does STM32MP15 -M4 MCU have same one?
Hi, we make custom board base on STM32MP15 and without PMIC and have problem with power off command.Does anyone know any document or hint about this? All research we have found always include PMIC.
Hello, i'm currently working on the stm32mp135f-dk with the kirkstone yocto version for layers provided by st. I'm trying to double all fs partitions (rootfs bootfs and userfs) to implement a software update mechanism with an active set of partitions...
