Instead of assuming the maximum PWM value is 255, export a constant
from the firmware to the host with the maximum value.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The term "firmware" is ambiguous - it could refer to the entire
project (host and micro-controller software) or to just the
micro-controller software. Avoid the term in the documentation.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>