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| -rw-r--r-- | libs-device/osccal.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libs-device/osccal.c b/libs-device/osccal.c index c1bff32..ea170ec 100644 --- a/libs-device/osccal.c +++ b/libs-device/osccal.c @@ -16,6 +16,12 @@ /* ------------------------ Oscillator Calibration ------------------------- */ /* ------------------------------------------------------------------------- */ +/* This is a "C" implementation. You can customize it to your needs easily. + * If you want smaller code size, there is an improved version in the + * micronucleous project. See + * https://github.com/micronucleus/micronucleus/blob/master/firmware/osccalASM.S + */ + /* Calibrate the RC oscillator. Our timing reference is the Start Of Frame * signal (a single SE0 bit) repeating every millisecond immediately after * a USB RESET. We first do a binary search for the OSCCAL value and then |