STM32 MCUs Embedded software

Is there any max bytes limitation on function HAL_I2C_Mem_Read_DMA() using STM32F746IG and FW1.17.0 ?

I´m trying read bytes from Adafruit I2C Non-Volatile FRAM Breakout module (ic MB85RC256V from FUJITSU) in my STM32F746IG custom board.Using FW 1.16.2, I can read 512 bytes using HAL_I2C_Mem_Read_DMA.Using FW 1.17.0, The I2C stops (clock pin goes down...

Since STM32Cube_FW_F7_V1.17.0 the HAL I2C Functions do not work the same. For a huge project that used to work with no issues on STM32Cube_FW_F7_V1.16.2 the I2C Data line goes low and the Firmware reports an HAL_I2C_ERROR_SIZE. Is there a known bug?

We are using a STM32F76ZI for a consumer device.The Firmware used to work fine with no errors.Since STM32Cube_FW_F7_V1.17.0 the I2C communication does not work all the time reporting random I2C Errors. The most common error is HAL_I2C_ERROR_SIZE that...

What is the I2C transaction size for the STM32 HAL_I2C_Mem_READ Function? I know for Arduino the I2C transaction size is limited to 32 bytes but I was unable to find similar information about STM32's I2C. I'm currently using the STM32L010RB chip.

Since STM32Cube_FW_F7_V1.17.0 the HAL I2C Functions do not work the same. For a huge project that used to work with no issues on STM32Cube_FW_F7_V1.16.2 the I2C Data line goes low and the Firmware reports an HAL_I2C_ERROR_SIZE. Is there a known bug?

We are using a STM32F76ZI for a consumer device.The Firmware used to work fine with no errors.Since STM32Cube_FW_F7_V1.17.0 the I2C communication does not work all the time reporting random I2C Errors. The most common error is HAL_I2C_ERROR_SIZE that...

HAL_I2C_Mem_Read_IT() clock stops mid way through 256 byte read

Hi,I am using a Nucleo-G474RE with the azure V1.0.0 pack and using a thread example project to interface to an external I2C 256 byte memory device.Using blocking I2C read/write works fine, I can read and write the 256 bytes in one go.When I switch to...

How to execute flash code for both the cores (CM7 ^ CM4) through I2C bootloader for STM32H745XI?

Hi,I am using STM32H745XI having Device ID: 0x450, Revision ID: V, Bootloader version: 0x90.I have pulled high Boot(pin), which is causing inbuilt bootloader to get executed. Both cores boot are enabled i.e. BCM4 & BCM7 are checked.Over i2c, I am abl...

Resolved! Difference between HAL_I2C_Master_Transmit_IT and HAL_I2C_Master_Transmit_DMA

Hi,I know that DMA can save CPU time by transfering data from memory to peripheral (and from peripheral to memory) but it not clear how this works for I2C since the I2Cx_EV_HANDLER is still called when I changeI2C from IT configuration to DMA configu...

F411 I2C LL Call Hangs

I am using F411 to communicate with ADXL355 through I2C1.I have a very strange issue: LL_I2C_GenerateStartCondition(I2C1); /* (1.3) Loop until Start Bit transmitted (SB flag raised) ********************/ /* Loop until SB flag is raised */ w...

Booting from flash memory not working in stm32G0b1ke mcu

We are flashing the firmware to stm32g0b1ke mcu using i2c in-application programming.after flashing the firmware to mcu,changed the boot configuration to boot from flash memory.I set the boot pin to 0 and option bytes to 0xFAFFFEAA for booting from f...

Using bootloader GO command with BOOT0 always asserted

I am using the I2C bootloader on STM32L431, in a system where another host CPU exists. I would like to minimize the number of host GPIO needed to manage entry to bootloader mode. (Currently the host is controlling the BOOT0 and RST# pins). I would...