nrf5/sdk: Updating BLE UART implementation by swapping TX and RX uuid and characterisitic handling. Removed dummy write delay of 10 ms.
nrf5/sdk: Updating BLE UART implementation by swapping TX and RX uuid and characterisitic handling. Removed dummy write delay of 10 ms.

tralamazza/micropython,tralamazza/micropython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/micropython,tralamazza/micropython,adafruit/micropython,adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/micropython,tralamazza/micropython