#include <ao.h>
#include <ao_button.h>
#include <ao_exti.h>
+#include <ao_debounce.h>
#if AO_EVENT
#include <ao_event.h>
#define ao_button_queue(b,v) ao_event_put_isr(AO_EVENT_BUTTON, b, v)
#define ao_button_queue(b,v)
#endif
-static uint8_t ao_button[AO_BUTTON_COUNT];
-static AO_TICK_TYPE ao_button_time[AO_BUTTON_COUNT];
+#define AO_BUTTON_DEBOUNCE_HOLD 10
-#define AO_DEBOUNCE AO_MS_TO_TICKS(20)
+static struct ao_debounce ao_button_debounce[AO_BUTTON_COUNT];
#define port(q) AO_BUTTON_ ## q ## _PORT
#define bit(q) AO_BUTTON_ ## q
#define pin(q) AO_BUTTON_ ## q ## _PIN
-static void
-ao_button_do(uint8_t b, uint8_t v)
-{
- /* Debounce */
- if ((AO_TICK_SIGNED) (ao_tick_count - ao_button_time[b]) < AO_DEBOUNCE)
- return;
-
- /* pins are inverted */
- v = !v;
- if (ao_button[b] != v) {
- ao_button[b] = v;
- ao_button_time[b] = ao_tick_count;
- ao_button_queue(b, v);
- ao_wakeup(&ao_button[b]);
- }
-}
+/* pins are inverted */
+#define ao_button_value(b) !ao_gpio_get(port(b), bit(b), pin(b))
-#define ao_button_update(b) ao_button_do(b, ao_gpio_get(port(b), bit(b), pin(b)))
-
-static void
-ao_button_isr(void)
+static uint8_t
+_ao_button_get(struct ao_debounce *debounce)
{
+ uint8_t b = debounce - ao_button_debounce;
+
+ switch (b) {
#if AO_BUTTON_COUNT > 0
- ao_button_update(0);
+ case 0: return ao_button_value(0);
#endif
#if AO_BUTTON_COUNT > 1
- ao_button_update(1);
+ case 1: return ao_button_value(1);
#endif
#if AO_BUTTON_COUNT > 2
- ao_button_update(2);
+ case 2: return ao_button_value(2);
#endif
#if AO_BUTTON_COUNT > 3
- ao_button_update(3);
+ case 3: return ao_button_value(3);
#endif
#if AO_BUTTON_COUNT > 4
- ao_button_update(4);
+ case 4: return ao_button_value(4);
#endif
+ }
+ return 0;
+}
+
+static void
+_ao_button_set(struct ao_debounce *debounce, uint8_t value)
+{
+ uint8_t b = debounce - ao_button_debounce;
+
+ ao_button_queue(b, value);
+}
+
+
+#define ao_button_update(b) ao_button_do(b, ao_gpio_get(port(b), bit(b), pin(b)))
+
+static void
+ao_button_debounce_init(struct ao_debounce *debounce) {
+ ao_debounce_config(debounce,
+ _ao_button_get,
+ _ao_button_set,
+ AO_BUTTON_DEBOUNCE_HOLD);
+}
+
+static void
+ao_button_isr(void)
+{
+ uint8_t b;
+
+ for (b = 0; b < AO_BUTTON_COUNT; b++)
+ _ao_debounce_start(&ao_button_debounce[b]);
}
#define init(b) do { \
+ ao_button_debounce_init(&ao_button_debounce[b]); \
ao_enable_port(port(b)); \
\
ao_exti_setup(port(b), bit(b), \
#if AO_BUTTON_COUNT > 1
init(1);
#endif
+#if AO_BUTTON_COUNT > 2
+ init(2);
+#endif
+#if AO_BUTTON_COUNT > 3
+ init(3);
+#endif
+#if AO_BUTTON_COUNT > 4
+ init(4);
+#endif
+ ao_debounce_init();
}