STM32 MPUs Embedded software and solutions

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CNT value interrupt

I want to generete interrupt for specific value of TIM->CNT TIM1->DIER |= TIM_IT_CC1; TIM1->CCR1 = myVal;I use only above. if(TIM_GetITStatus(TIM1,TIM_IT_CC1) != RESET){ //when interrupt generete here ,CCR1 is not equal my value } I'm so confused w...

hdemi.1 by Associate III
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  • 6 replies
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I am Using STM32MP157FAA1 for one of the Product. I need help for booting the processor using SDMMC2 which is SD CARD.

Can some one help me to know what would be the default factory OTP settings on the processor - STM32MP157FAA1 - or should it be set by the User? Does the Default Comes with SDMMC1 set for the Boot?If I need to change from SDMMC1 to SDMMC2 as the Pri...

US.2 by Associate
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  • 1 replies
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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
  • 0 kudos