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sivansriman
Associate
August 3, 2023
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I2C not working with MPU6050

  • August 3, 2023
  • 1 reply
  • 2676 views

Hello

I've been trying to shift over to STM32CubeIDE from the Arduino IDE and I have written the code for MPU6050 in CubeIDE using the HAL Libraries. However when I Debug the code and observe the values, its clear that the connection isnt established properly. To verify that nothing is wrong with my board, I used my old code in the arduino ide and it works there. Can someone help me with this? I am using stm32f401ccu6 blackpill with stlink v2. I am able to run simple blink codes in CubeIDE with this setup, but the I2C interfacing is not working. Any help would be appreciated. I have attached my code here as well for others to verify. Please let me know if there might be any configuration I might be missing out in the ioc file.

Thanks,
Sivan Sriman

    This topic has been closed for replies.
    Best answer by sivansriman

    Ok I dont know whether to laugh or cry, but I guess the problem was i was still using the same 0x68 (7bit address )as the address where I shouldve used 0xd0 (8bit address). My declaration of the address should have been
    #define MPU_ADDR 0x68 << 1 instead of just 0x68 

    1 reply

    sivansrimanAuthorBest answer
    Associate
    August 3, 2023

    Ok I dont know whether to laugh or cry, but I guess the problem was i was still using the same 0x68 (7bit address )as the address where I shouldve used 0xd0 (8bit address). My declaration of the address should have been
    #define MPU_ADDR 0x68 << 1 instead of just 0x68 

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