microbit: Added details for the i2c silicone glitch

As per https://github.com/lancaster-university/microbit-dal/issues/83 the comment in the MicroBitI2c.h file lacked context around a known hardware glitch. This commit rectifies this issue by adding a link to a collection PDF providing a more detailed explanation.
James Devine 7 years ago
parent d22a36fdd5
commit 0a5e4a06af

@ -10,6 +10,12 @@
* Presents a wrapped mbed call to capture failed I2C operations caused by a known silicon bug in the nrf51822.
* Attempts to automatically reset and restart the I2C hardware if this case is detected.
* For reference see PAN56 in:
* https://www.nordicsemi.com/eng/nordic/Products/nRF51822/PAN-nRF51822/24634
* v2.0 through to v2.4
class MicroBitI2C : public I2C