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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/11/27 14:07:55 UTC

[GitHub] [incubator-nuttx] davids5 commented on pull request #2391: Add simple wm8994 codec driver

davids5 commented on pull request #2391:
URL: https://github.com/apache/incubator-nuttx/pull/2391#issuecomment-734851948


   In the changed to the header file stm32f74xx75xx_pinmap.h. No. We can not change all the boards default I2C settings. It will may break deployed systems. Or worse violate FCC. 
   
   The values need to be adjusted in the board config:
   
   in board.h add
   ```
   define ADJ_SLEW_RATE(p) (((p) & ~GPIO_SPEED_MASK) | (GPIO_SPEED_100MHz))
   
   #define GPIO_I2C3_SCL  ADJ_SLEW_RATE(GPIO_I2C3_SCL_1 ) 
   ...
   ```


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