init

1 files changed, 31 insertions, 0 deletions

diff --git a/src/debug.c b/src/debug.c
new file mode 100644
index 0000000..858195e
--- /dev/null
+++ b/src/debug.c
@@ -0,0 +1,31 @@
+#include <avr/io.h>
+#include <stdio.h>
+#include <util/delay.h>
+#include "debug.h"
+
+
+
+
+
+/*
+ * TCNTn: timer/counter
+ * TCCRnA/B/C: timer/counter control registers
+ */
+void timer_init() {
+  TCCR1A = 0;         //no waveform generation or something like that
+  TCCR1B = _BV(CS00); //no prescaling; use internal clock
+  TCCR1C = 0;
+}
+
+//makes it easier to print time; is an unsigned int and NOT to be used for more then printing
+unsigned int ticks_to_seconds(uint16_t start, uint16_t end) { 
+  return ((unsigned int)(end - start) / F_CPU);
+}
+
+void test_timer() {
+  uint16_t start, end;
+  start = TCNT1;
+  _delay_ms(1000);
+  end = TCNT1;
+  printf("1 second is %u ticks\n",  end - start);
+}