STM32 MCUs Wireless

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

How to switch I2C pull up when STOP MODE 2 on STM32WLE

Hello,I have a STM32WLE that works with the lora end_node projectI have a sensor that i power up with a mosfet when needed.But during the time that the chip is sleeping i need to disable the internal I2C pullup (+30 uA more due to the fact that the V...

HDIA.1 by Associate III
  • 260 Views
  • 1 replies
  • 0 kudos

How disable PULL UP on i2c

Hello,I have a STM32WLE that works with the lora end_node project I have a sensor that i power up with a mosfet when needed. But during the time that the chip is sleeping i need to disable the internal I2C pullup (+30 uA more due to the fact that th...

HDIA.1 by Associate III
  • 294 Views
  • 2 replies
  • 0 kudos

Resolved! Stm32wb15ccu i2c bus never has signal edges

I design a custom board including a stm32wb15ccu where I want to use the I2C bus. I have for SDA and SCL 10k pull up resistors. However when launching i2c the signal of SDA and SCL remain at 3.3V, no bus signal. Hence I could not communicate between ...

YGail.2 by Associate III
  • 293 Views
  • 2 replies
  • 0 kudos

STM32WB cannot connect to adafruit feather through I2C

Hi there, I tried to set STM32 as the master and adafruit feather ESP8266 as the slave. They are going to communicate through I2C. Below is the configuration of the i2c3 because it is the only port for external sensors:Then I write below code for mas...

0693W00000aJWCfQAO.png 0693W00000aJWDnQAO.jpg
QQian.1 by Associate
  • 333 Views
  • 3 replies
  • 0 kudos

Need I2C Code base with 1 Fast Mode

Hi Team,We are using the I2C Bus to read the Eeprom Data. We configured with 100Khz speed with DMA to transfer the data.After initialization of I2C and DMA it is working fine and able to Read and write the data with different speeds.If we read the da...