15 #define SERIAL_BUFFER_SIZE (256+7+1) //Size of the serial buffer used by new comms protocol. The largest single packet is the O2 calibration which is 256 bytes + 7 bytes of overhead
16 #define FPU_MAX_SIZE 0 //Size of the FPU buffer. 0 means no FPU.
97//These have the TIFR5 bits set to 1 to clear the interrupt flag. This prevents a false interrupt being called the first time the channel is enabled.
116 #define MAX_TIMER_PERIOD 262140UL //The longest period of time (in uS) that the timer can permit (IN this case it is 65535 * 4, as each timer tick is 4uS)
117 #define uS_TO_TIMER_COMPARE(uS1) ((uS1) >> 2) //Converts a given number of uS into the required number of timer ticks until that time has passed