GEM 2 Module Hardware Integration Guide
Version 0.1
Wahoo Fitness
9
90 West Wieuca Road, Suite 110
Atlanta, GA 30342
www.wahoofitness.com
1‐877‐978‐1112
Example for Serial Wire Debug Interface
UART Host
The UART is required for communicating between the GEM 2 module and fitness machine
console using the GEMSAFE or HCI command protocol. Pins 13 and 14 of the module have
been configured as the UART interface. Pin 13 is the UART TX line and pin 14 is the UART
RX line.
Reset
The GEM 2 module can be reset by holding PIN 25 low for 0.5us. The following is an
example reset circuit:
Example Reset Circuit
