STM32 MPUs Products and hardware related
Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
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Cannot get SPI LCD working with STM32MP157D-DK1 (Yocto)
I have attached an Adafruit LCD (https://www.adafruit.com/product/1770) to my STM32MP157D-DK1 on SPI5 (on the RPi header). I am working with Yocto and the STM32MP1 BSP (but not OpenSTLinux). I am attempting to modify core-image-minimal to enable the ...
Resolved! Is it possible to read GPIO registers using devmem2 under Linux? (on DK2)
On DK2, using devmem2 on linux I read that GPIOH->MODER/ODR (0x50009000/0x50009014) are all zeroes. The same for GPIOA. OTOH some other things can be read out like RTC clock settings. Is there a way to read the GPIO registers?
Resolved! STM32MP1 QUADSPI interface: NorFlash and NandFlash
Hello, I'm designing a board based on STM32MP1 and it's my first time using QUADSPI.I need to boot on a NorFlash (MLO + U-boot), and my Linux filesystem will be on a NandFlash.Those constraint come from the fact that on my previous system (based on a...
Resolved! Can someone please help. We are trying to implement a KSZ8041FTL Ethernet PHY using an STM32MP157C. We are not able to connect to the device via MDIO. The device does not respond.
We are trying to implement a KSZ8041FTL in an embedded design. We are using an STM32MP157 device in a SOC provided by Octavo systems (OSD32MP157C-512M-BAA). We have used design resources provided by Microchip and followed examples provided. We have f...
ksz8041 bring up
It seems that I have a problem with DMA, but I'm not sure. Would you please take a look at the below screenDts looksI intend to achieve MII with self-generated quartz.Unfortunately, I'm stuck on this "Failed to reset the DMA".
Resolved! I just received STM32MP157F-EV1. On boot, the LCD displays nothing and the onboard ST-Link will not properly enumerate (Windows says "USB Device Not Recognized"). Latest ST-Link driver is installed and working with other kits. Is this a faulty board?
The ST-Link LEDs are very dimly lit when powered...they are much brighter on my STM32MP157F-DK2 board. I suspect some hardware problem with the MPU board. Also, the CPU LEDs do appear to be running (the Linux Blue LED blinks after a while, and with...
Bluetooth tty instance not showing up in /dev/tty*
Hi,I'm using a Wifi/BT module with CYW4343W chip on a custom board with STM32MP157.When booting the system, the driver is loaded correctly and dmesg log shows[ 1.089865] 4000e000.serial: ttySTM1 at MMIO 0x4000e000 (irq = 24, base_baud = 6250000) i...
