Remove timer since it is not used.

74hc165_piso/Makefile

@@ -51,7 +51,7 @@ FORMAT = ihex
 TARGET = main
 
 # List C source files here. (C dependencies are automatically generated.) 
-SRC = $(TARGET).c uart_async.c timer.c
+SRC = $(TARGET).c uart_async.c 
 
 # List Assembler source files here.
 #     Make them always end in a capital .S.  Files ending in a lowercase .s

74hc165_piso/timer.c

@@ -1,63 +0,0 @@
-/*
- * Low resolution implementation of timer using a 8 bit clock with prescaler, 
- * etc.  Clicks approximately every millisecond.  Microseconds are not available, 
- * and any queries to the function will just return milliseconds * 1000.
- * You can use this file when you don't need high resolution timing, and don't care
- * about slight clock drift, inaccuracy, etc.  For timing most human-related activities,
- * though, it should be more than sufficient.
- */
-#include "timer.h"
-
-static volatile uint64_t _timer_millis;
-
-/*
- * Initializes the timer, and resets the timer count to 0.  Sets up the ISRs 
- * linked with timer0.
- */
-void timer_init(){
-	//Set up the timer to run at F_CPU / 256, in normal mode (we reset TCNT0 in the ISR)
-	TCCR0A = 0x0;
-	TCCR0B |= _BV(CS02);
-	
-	//Set compare value to be F_CPU / 1000 -- fire interrupt every millisecond
-	OCR0A = F_CPU / 256 / 1000;
-	
-	//Enable compare interrupt
-	TIMSK0 = _BV(OCIE0A);
-
-	//Reset count variables
-	_timer_millis = 0;
-	
-	//Enable interrupts if the NO_INTERRUPT_ENABLE define is not set.  If it is, you need to call sei() elsewhere.
-#ifndef NO_INTERRUPT_ENABLE
-	sei();
-#endif
-	
-	DDRB = 0xFF;
-}
-
-/*
- * Returns the number of milliseconds which have elapsed since the 
- * last time timer_init() was called.  Overflows after about 49 days.
- */
-uint64_t timer_millis(){
-	return _timer_millis;
-}
-
-/*
- * Returns the number of microseconds which have elapsed since the 
- * last time timer_init() was called.  Overflows after about 71 minutes.
- */
-uint64_t timer_micros(){
-	return (_timer_millis * 1000);
-}
-
-
-/* 
- * The ISR for timer0 overflow.  Increment the _timer_count here, and do the calculcations
- * to increment _timer_millis as needed.
- */
-ISR(TIMER0_COMPA_vect){
-	TCNT0 = 0;
-	_timer_millis++;
-}

74hc165_piso/timer.h

@@ -1,25 +0,0 @@
-#ifndef TIMER_H
-#define TIMER_H
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-
-/*
- * Initializes the timer, and resets the timer count to 0.  Sets up the ISRs 
- * linked with timer1.
- */
-void timer_init();
-
-/*
- * Returns the number of milliseconds which have elapsed since the 
- * last time timer_init() was called.  Overflows after about 49 days.
- */
-uint64_t timer_millis();
-
-/*
- * Returns the number of microseconds which have elapsed since the 
- * last time timer_init() was called.  Overflows after about 71 minutes.
- */
-uint64_t timer_micros();
-
-#endif