1 files changed, 147 insertions, 0 deletions
diff --git a/timer.h b/timer.h
new file mode 100644
index 0000000..192c15d
--- /dev/null
+++ b/timer.h
@@ -0,0 +1,147 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <stdint.h>
+
+#include "mcu/mcu_def.h"
+
+#ifndef _IOE_TIMER_H_
+#define _IOE_TIMER_H_
+#ifdef CONFIG_IOE_TIMERS
+
+enum timerDivider {
+    TIMER_DIVIDER_1,
+    TIMER_DIVIDER_8,
+    TIMER_DIVIDER_64,
+    TIMER_DIVIDER_256,
+    TIMER_DIVIDER_1024
+};
+
+static inline void timer_init(uint8_t timer, enum timerDivider div) {
+    switch (timer) {
+#ifdef COUNTER0_PWM
+    case COUNTER0_PWM:
+        // Null counting register
+        TCNT0 = 0;
+        // Set interrupt flag
+        TIMSK0 = _BV(TOIE0);
+        // Set division and start counting
+        switch (div) {
+            case TIMER_DIVIDER_1:
+                TCCR0B = _BV(CS00);
+                break;
+            case TIMER_DIVIDER_8:
+                TCCR0B = _BV(CS01);
+                break;
+            case TIMER_DIVIDER_64:
+                TCCR0B = _BV(CS01) | _BV(CS00);
+                break;
+            case TIMER_DIVIDER_256:
+                TCCR0B = _BV(CS02);
+                break;
+            case TIMER_DIVIDER_1024:
+                TCCR0B = _BV(CS02) | _BV(CS01);
+                break;
+            default:
+                return;
+        }
+        break;
+#endif /* COUNTER0_PWM */
+#ifdef COUNTER1_16PWM
+    case COUNTER1_16PWM:
+        break;
+#endif /* COUNTER1_16PWM */
+#ifdef COUNTER2_PWM_ASYNC
+    case COUNTER2_PWM_ASYNC:
+        break;
+#endif /* COUNTER2_PWM_ASYNC */
+    }
+}
+
+static inline void timer_disable(uint8_t timer) {
+    switch (timer) {
+#ifdef COUNTER0_PWM
+    case COUNTER0_PWM:
+        TCCR0B = 0;
+        break;
+#endif /* COUNTER0_PWM */
+#ifdef COUNTER1_16PWM
+    case COUNTER1_16PWM:
+        break;
+#endif /* COUNTER1_16PWM */
+#ifdef COUNTER2_PWM_ASYNC
+    case COUNTER2_PWM_ASYNC:
+        break;
+#endif /* COUNTER2_PWM_ASYNC */
+    }
+}
+
+static inline void timer_reset(uint8_t timer) {
+    switch (timer) {
+#ifdef COUNTER0_PWM
+    case COUNTER0_PWM:
+        TCNT0 = 0;
+        break;
+#endif /* COUNTER0_PWM */
+#ifdef COUNTER1_16PWM
+    case COUNTER1_16PWM:
+        break;
+#endif /* COUNTER1_16PWM */
+#ifdef COUNTER2_PWM_ASYNC
+    case COUNTER2_PWM_ASYNC:
+        break;
+#endif /* COUNTER2_PWM_ASYNC */
+    }
+}
+
+static inline uint16_t timer_value(uint8_t timer) {
+    switch (timer) {
+#ifdef COUNTER0_PWM
+    case COUNTER0_PWM:
+        return TCNT0;
+        break;
+#endif /* COUNTER0_PWM */
+#ifdef COUNTER1_16PWM
+    case COUNTER1_16PWM:
+        break;
+#endif /* COUNTER1_16PWM */
+#ifdef COUNTER2_PWM_ASYNC
+    case COUNTER2_PWM_ASYNC:
+        break;
+#endif /* COUNTER2_PWM_ASYNC */
+    default:
+        return 0;
+    }
+}
+
+#ifdef COUNTER0_PWM
+void (*timer_0_pwm_overflow) (void);
+#endif /* COUNTER0_PWM */
+#ifdef COUNTER1_16PWM
+void (*timer_1_16pwm_overflow) (void);
+#endif /* COUNTER1_16PWM */
+#ifdef COUNTER2_PWM_ASYNC
+void (*timer_2_pwm_overflow) (void);
+#endif /* COUNTER2_PWM_ASYNC */
+
+static inline void timer_sethook(uint8_t timer, void (*fnc) (void)) {
+    switch (timer) {
+#ifdef COUNTER0_PWM
+    case COUNTER0_PWM:
+        timer_0_pwm_overflow = fnc;
+        break;
+#endif /* COUNTER0_PWM */
+#ifdef COUNTER1_16PWM
+    case COUNTER1_16PWM:
+        timer_1_16pwm_overflow = fnc;
+        break;
+#endif /* COUNTER1_16PWM */
+#ifdef COUNTER2_PWM_ASYNC
+    case COUNTER2_PWM_ASYNC:
+        timer_2_pwm_overflow = fnc;
+        break;
+#endif /* COUNTER2_PWM_ASYNC */
+    }
+}
+
+#endif /* CONFIG_IOE_TIMERS */
+#endif /* _IOE_TIMER_H_ */