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Glebiys · 2020-10-31

Hello all,Must use I/O expander (PCA9534PW) with STM32F334K8T6.Code:HAL_I2C_Mem_Write(&hi2c1, 0x20<<1, 0x03, I2C_MEMADD_SIZE_8BIT, 0x00, 1, 15000);All code (CubeMX generated): https://pastebin.com/GKNxHSut The usual HAL_I2C_Transmit is not suitable, ...

Glebiys · 2018-12-06

Hi!I design a board on which there will be several microcontrollers (STM32 and ATMEGA328), 12V comes on the board and I need to lower this voltage to 5V. In addition to the controllers, I will power a few more sensors and LEDs.I am trying to find a r...

Glebiys · 2020-10-31

UPD.The error was that I was directly writing register data to the function.And there a pointer was needed.Make a pointer - the problem was solved. Now it works!The reason is my inattention.uint8_t dataBuffer[1]; dataBuffer[0] = 0x0; HAL_I2C_Mem_Writ...

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HAL_I2C_Mem_Write is not working properly

Choosing a reliable DC / DC converter to power the controller (12V / 5V)

Re: HAL_I2C_Mem_Write is not working properly