1 files changed, 0 insertions, 53 deletions
diff --git a/keyboard/preonic/analog.c b/keyboard/preonic/analog.c
deleted file mode 100644
index 49b84ee0e..000000000
--- a/keyboard/preonic/analog.c
+++ /dev/null
@@ -1,53 +0,0 @@
-// Simple analog to digitial conversion
-
-#include <avr/io.h>
-#include <avr/pgmspace.h>
-#include <stdint.h>
-#include "analog.h"
-
-
-static uint8_t aref = (1<<REFS0); // default to AREF = Vcc
-
-
-void analogReference(uint8_t mode)
-{
-	aref = mode & 0xC0;
-}
-
-
-// Arduino compatible pin input
-int16_t analogRead(uint8_t pin)
-{
-#if defined(__AVR_ATmega32U4__)
-	static const uint8_t PROGMEM pin_to_mux[] = {
-		0x00, 0x01, 0x04, 0x05, 0x06, 0x07,
-		0x25, 0x24, 0x23, 0x22, 0x21, 0x20};
-	if (pin >= 12) return 0;
-	return adc_read(pgm_read_byte(pin_to_mux + pin));
-#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
-	if (pin >= 8) return 0;
-	return adc_read(pin);
-#else
-	return 0;
-#endif
-}
-
-// Mux input
-int16_t adc_read(uint8_t mux)
-{
-#if defined(__AVR_AT90USB162__)
-	return 0;
-#else
-	uint8_t low;
-
-	ADCSRA = (1<<ADEN) | ADC_PRESCALER;		// enable ADC
-	ADCSRB = (1<<ADHSM) | (mux & 0x20);		// high speed mode
-	ADMUX = aref | (mux & 0x1F);			// configure mux input
-	ADCSRA = (1<<ADEN) | ADC_PRESCALER | (1<<ADSC);	// start the conversion
-	while (ADCSRA & (1<<ADSC)) ;			// wait for result
-	low = ADCL;					// must read LSB first
-	return (ADCH << 8) | low;			// must read MSB only once!
-#endif
-}
-
-