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Questions tagged [stm32h743]

A variant of the STM32H7 microcontroller line with a Cortex-M7 core at up to 480 MHz.

24 questions
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STM32H7 Changing boot1 adress in OBFlash

I am having troubles changing boot1 address in Option Byte in Flash I want to change boot1 address, allowing me to launch either in bootloader mode (system memory) or usercode mode(flash) without using a jump. I am currently testing on the STM32H743…
GabrielT
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Store the ADC stream on µSD Card without loss on STM32H743ZI

I am working on a project in which I have to store the datas of an ADC Stream on a µSD card. However even if I use a 16 bits buffer, I lose data from the ADC stream. My ADC is used with DMA and I use FATFS (WITHOUT DMA) and the SDMMC1 peripheral to…
M.Chêne
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STM32 EEPROM Emulation vs HAL_FLASH and HAL_FLASH_EX driver

Looking to confirm options to persistently save values on an STM32H7 device. My understanding of the high level options are: EEPROM Emulation with eepropm.h/c (which uses the HAL_FLASH/EX drivers) HAL_FLASH and HAL_FLASH_EX drivers,…
plane
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STM32H7 problem when changing from DTCM Ram to RAM_D1

I am writing a project with STM32H7. The project contains RTC, SPI, USART, SD Card, timers, and I2C. In order to have more RAM, I have brought the data and bss to RAM_D1. I did this by changing the linker file. As next steps I want to implement…
vouria
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STM32H7 DCMI with BT.656

I am currently making a system using digital camera, my camera resolution is 384x288 4:2:2 YCbCr. My camera works on BT.656 with embedded sync (without hardware sync). I configured STM32 DCMI with embedded sync and it didn't work. Then I started to…
davidra7
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IEEE 1588 PTP Clock Source in STM32H743

I'm trying to get PTP timestamp on STM32H743 Nucleo board. There is no proble with LwIP and ethernet driver so far except for PTP. I followed the instruction( 58.9.7 Programming guidelines for IEEE 1588 timestamping) on reference manual (RM0433) as…
ierturk
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stm32h7 rtc resets after power down (vbat is connected)

I am using a stm32h753 and stm32cubemx, and trying to run the RTC module on VBAT. To do this I have connected a battery to the MCU. RTC is connected to LSE. Next, I set the RTC in my code and then I disconnect the MCU from power source, and then…
vouria
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USART3_IRQHandler() is continuously called with LL_USART_IsActiveFlag_TXE set

I'm to developing my own serial code (rather than using CubeMX's HAL) to interface an existing protocol codebase which needs low-level serial features. USART3_IRQHandler() is being called repeatedly (and hence serial::serial_irq_handler() too. /** …
fadedbee
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Can the STM32H743's FMC drive a 16-bit 8080 bus faster than 1.6MHz when clocked at 480MHz?

I'm using the FMC of the STM32H743 to drive a 16-bit 8080-bus LCD controller. I've tried using DMA, MDMA and a CPU-loop to transfer data to the 8080-bus, via the FMC. The transfer frequency does not depend on whether DMA, MDMA or CPU-loop is used. …
fadedbee
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