yutaide commented on pull request #3646: URL: https://github.com/apache/incubator-nuttx/pull/3646#issuecomment-831708770
@btashton I put 4.7k pullup resistors on SCL and SDA like [this](https://twitter.com/ide_yuta/status/1389461771623280642?s=20). I can get "0x71" when I put __mpu_read_who_am_i(dev) in mpu_reset() in mpu60x0.c now. This always failed when I didn't put pullup resistors. But this time, it succeeded sometimes, and failed sometimes. (When it fails, I got 0xff.) Besides, I enabled I2C Debug Features ( I2C Error Output ). Then I always see an error below. ``` stm32_i2c_process: ERROR: Waitdone timed out CR1: 0x00000011 CR2: 0x010100d0 status: 0x00008011 ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
