STM32 MCUs Products

Resolved! STM32F072 Clock tree section shows how to select clock for USARTS 1-3, but not USART4. Were in the reference manual (RM0091 Rev 10) does it show how to select the clock source for USART4?

The USART section states that all 4 USARTs can be clocked from a common set of 4 clock sources, but doesn't reference how to specify the clock for USART4 either.

Resolved! STM32F072: where is "APB1 prescaler" defined in the Reference Manual?

The STM32F072 Clock tree figure in reference manual shows APB1 prescaler, but where is that defined in the reference manual? When I search for APB1 in the reference manual, in the context of a register field, it does not show up (other than in the cl...

Linker handles TFlite differently on different boards

I have two boards: STM32L4xx and STM32H7xxQ.I use cubeAI 8.0.1 and tflite for a project in vision.Having set all includes and settings, I successfully build and flash my code on the first board. The second project uses the same include paths (exporte...

Timer cookbook wrong figure ?

Shortly, cookbook says ETR frequency higher than core clock. It seems wrong. I am not sure if the information given is correct.

connecting MCP23017 extender to STM32F4 DISCO communication/testing

Hello!I am trying to connect 8 mcp23017 gpio extenders daisy chained to stm32 but I am having difficulty testing the validity of the ports. I configured the extender and set up the pins to be output pins but when I send the data to write active high ...

Resolved! STM32H747I-DISCO + B-Cams-OMV cannot run webcam or People detect

*Using FP-AI-Vision1 Packimport the binary webcam, the screen is black.import the people detection binary, the screen is a mess.No camera picture.While import the Tutti Frutti demo, it can normally run.

Stm32F4 i2c as master trasmit HAL_OK but not working

I’m using the board, motordriver IIC, to control motor through I2C bus.The chip on the board is PCA9685.The board is originally a extension for arduino UNO, and I’m using STM32F446RE which also support arduino UNO expansion connector.The official g...