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Hello, I would like to make the Grove - 16 Channel PWM Driver (PCA9685) work with an STM32F429I-DISC1 board. Can you help me?

HGanc.1
Associate

‎2023-05-22 06:17 AM

I would like to do this to control LED strips, however, I have a problem because no matter how hard I try using the HAL_I2C_Master, it doesn't work.

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Foued_KH
ST Employee

‎2023-05-26 02:15 AM

Hello @HGanc.1​ ,

First, make sure that you are using the correct address and the correct frequency for the I²C communication.

The take an oscilloscope to check the I2C_SDA and I2C_SCL behavior.

Foued

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