I am trying to attach I2C sensors to the RAK3172 module. Actually I am using the RAK3272S board but in my case i guess it doesn’t matter.
I use the RUI3 framework v3.4.2. I’ve flashed the sensor node example without any modifications and took a look with an oscilloscope at the I2C pins. The datagram is really odd. I looks like the I2C pins are configured in ‘slow mode’ and they are not changing their state quick enough. Especially the CLK pin
As a consequence none of the I2C sensors I have work.
Can you give me any hint how to configure I2C to operate correctly?