Init

timer.c

@@ -0,0 +1,66 @@
+
+/*
+ * Copyright 2017-2024 Oleg Borodin <onborodin@gmail.com>
+ */
+
+#include <avr/interrupt.h>
+#include <util/delay.h>
+
+#include <tool.h>
+#include <timer.h>
+
+void timer0_init(void) {
+    /* TCCR0A */
+    /* Disable comparators */
+    REG_SETDOWN_BIT(TCCR0A, COM0A1);
+    REG_SETDOWN_BIT(TCCR0A, COM0A0);
+    REG_SETDOWN_BIT(TCCR0A, COM0B1);
+    REG_SETDOWN_BIT(TCCR0A, COM0B0);
+    /* Set normal mode */
+    REG_SETDOWN_BIT(TCCR0A, WGM01);
+    REG_SETDOWN_BIT(TCCR0A, WGM00);
+
+    /* TCCR0B */
+    /* Set prescaler */
+    REG_SETUP_BIT(TCCR0B, CS02);
+    REG_SETDOWN_BIT(TCCR0B, CS01);
+    REG_SETDOWN_BIT(TCCR0B, CS00);
+
+    //REG_SETUP(TCNT0, TIMER0_PRESIZE);
+    /* TIMSK0 */
+    /* Enable timer interrupt */
+    REG_SETUP_BIT(TIMSK0, TOIE0);
+}
+
+void timer1_init(void) {
+    /* TCCR1A */
+    REG_SETDOWN_BIT(TCCR1A, COM1A1);
+    REG_SETDOWN_BIT(TCCR1A, COM1A0);
+    REG_SETDOWN_BIT(TCCR1A, COM1B1);
+    REG_SETDOWN_BIT(TCCR1A, COM1B0);
+    REG_SETDOWN_BIT(TCCR1A, WGM11);
+    REG_SETDOWN_BIT(TCCR1A, WGM10);
+
+    /* TCCR1B */
+    /* Disable capture noise canceler */
+    REG_SETDOWN_BIT(TCCR1B, ICNC1);
+    /* Set Capture Edge */
+    REG_SETUP_BIT(TCCR1B, ICES1);
+    /* Disable waveform generation */
+    REG_SETDOWN_BIT(TCCR1B, WGM13);
+    REG_SETDOWN_BIT(TCCR1B, WGM12);
+    /* Set prescaler */
+    REG_SETDOWN_BIT(TCCR1B, CS10);
+    REG_SETUP_BIT(TCCR1B, CS11);
+    REG_SETUP_BIT(TCCR1B, CS12);
+
+    /* TIMSK1 */
+    /* Disable capture interrupt */
+    REG_SETDOWN_BIT(TIMSK1, ICIE1);
+    /* Disable compare interrupt */
+    REG_SETDOWN_BIT(TIMSK1, OCIE1B);
+    REG_SETDOWN_BIT(TIMSK1, OCIE1A);
+    /* ENABLE overflow interrupt */
+    REG_SETUP(TCNT1, TIMER1_PRESIZE);
+    REG_SETUP_BIT(TIMSK1, TOIE1);
+}