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Scale sample frequency w/ CPU frequency

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.. empirical on Feather M4, it can image my Prodigy disk
at 120MHz or 180MHz.
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Jeff Epler 2022-01-03 17:31:03 -06:00
parent be7212a87e
commit ea301951f3
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examples/greaseweazle/greaseweazle.ino
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@ -17,7 +17,7 @@
#if F_CPU != 180000000L
#warning "please set CPU speed to 180MHz overclock"
#endif
#define GW_SAMPLEFREQ 20000000UL // 20mhz for samd51
#define GW_SAMPLEFREQ (F_CPU * 11/90) // samd51 is sample rate of 22MHz at 180MHz OC
#elif defined (ARDUINO_ADAFRUIT_FEATHER_RP2040)
#define DENSITY_PIN 7 // IDC 2
#define INDEX_PIN 8 // IDC 8