Reduce default I2C clock

sparkfun / Arduino_Apollo3

Arduino core to support the Apollo3 microcontroller from Ambiq Micro

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Reduce default I2C clock #348

Closed nseidle closed 3 years ago

nseidle commented 3 years ago

The original default was 400kHz. I'm not sure of the root, I believe mbed imposed? But this was causing problems with a lot of libraries that assume 100kHz start. This PR reduces the bus speed to 100kHz.

Original:

After PR:

nseidle commented 3 years ago

This should fix the speed part of issue #289.