Moved some sensors to different timers
Most notably, change the ROS millisecond counter to share the BOM 38 kHz
timer instead of having its own. The range sensor and BOM rx will now
share timer 5, but they both have to be fixed for the higher F_CPU.
void bom_send(char dir);
int bom_get(char dir);
// toggles output - should be called at around 76 kHz
Also available in: Unified diff