STM32 MPUs Embedded software

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Resolved! SD Card boot is not working, I get `SD_InitDetailedErrorDesc ( 0x0000001B )` when using the ROM Code Trace Analyzer. What does this mean?

I have a custom board with a STM32MP157AAB3 and I am trying to boot it with the SD card.   I have tested the SD card on a STM32MP157C-DK2 and it boots to Linux fine. When I probe the SD card lines, I can see the clock is toggling for a long time and ...

I try spi communication, I write code using bare metal for master side(my board), using HAL library for slave board(STM32F429). My problem is that I can't receive data on slave board from master side.

I try to spi communication between my board with STM32MP157AACx microprocessor and STM32F429 disco board. I write code using bare metal for master side(my board), using HAL library for slave board(STM32F429). My problem is that I can't receive data f...

Eavci by Associate II
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  • 6 replies
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Resolved! GPIO programming issue

Hi all ~I'm trying to control GPIO input in own application. and I refered to below wiki. https://wiki.st.com/stm32mpu/wiki/How_to_control_a_GPIO_in_userspace​this is my code. gint gpiochip_fd, ret; gchar gpiochip_path[20]; struct gpioevent_request i...

Resolved! About VBAT battery replacement

Hi team,I'm developing a PCB that implements STM32MP151AAA3.I think VBAT is a backup power supply for RTC, so I'm planning to supply power to VBAT from a button battery.Will the RTC be reset when this button battery is changed?If it is so, is there a...

tatsuya by Associate II
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  • 3 replies
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VSYNC seems unresponsive in Qt 5.15 EGLFS

Hi, Last couple of weeks I am trying to debug a rendering issue between eglfs and what I believe to be a VSYNC/Tearing issue. For testing I am using a bootlin demo build-root image with elgfs support. The image has Qt5.15, EGLFS and EGL support (more...

KChar.1 by Senior
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  • 5 replies
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