19
* CPU speed is 4.8Mhz without the 8x divider when low fuse is 0x75
21
* define F_CPU 4800000 CPU: 4.8MHz PWM: 9.4kHz ####### use low fuse: 0x75 #######
22
* /8 PWM: 1.176kHz ####### use low fuse: 0x65 #######
23
* define F_CPU 9600000 CPU: 9.6MHz PWM: 19kHz ####### use low fuse: 0x7a #######
24
* /8 PWM: 2.4kHz ####### use low fuse: 0x6a #######
26
* Above PWM speeds are for phase-correct PWM. This program uses Fast-PWM,
27
* which when the CPU is 4.8MHz will be 18.75 kHz
30
* I use these fuse settings
20
* (check bin/flash*.sh for recommended values)