diff options
Diffstat (limited to 'firmware/drivers/button.c')
| -rw-r--r-- | firmware/drivers/button.c | 48 |
1 files changed, 41 insertions, 7 deletions
diff --git a/firmware/drivers/button.c b/firmware/drivers/button.c index 5532ad4..ffbb67c 100644 --- a/firmware/drivers/button.c +++ b/firmware/drivers/button.c @@ -28,19 +28,51 @@ static struct event_queue button_queue; -#define POLL_FREQUENCY HZ/10 +#define POLL_FREQUENCY HZ/10 +#define REPEAT_START 3 +#define REPEAT_INTERVAL 3 static int button_read(void); static void button_tick(void) { - static int counter=0; + static int tick=0; + static int count=0; + static int lastbtn=0; + static bool repeat=false; /* only poll every X ticks */ - if ( counter++ > POLL_FREQUENCY ) { + if ( tick++ > POLL_FREQUENCY ) { + bool post = false; int btn = button_read(); - queue_post(&button_queue, btn, NULL); - counter=0; + + if ( btn ) { + /* normal keypress */ + if ( btn != lastbtn ) { + post = true; + } + /* repeat? */ + else { + if ( repeat ) { + if ( ! --count ) { + post = true; + count = REPEAT_INTERVAL; + } + } + else if (count++ > REPEAT_START) { + post = true; + repeat = true; + count = REPEAT_INTERVAL; + } + } + if ( post ) + queue_post(&button_queue, btn, NULL); + } + else + repeat = false; + + lastbtn = btn; + tick = 0; } } @@ -48,9 +80,11 @@ int button_get(void) { struct event ev; - if ( !queue_empty(&button_queue) ) + if ( !queue_empty(&button_queue) ) { queue_wait(&button_queue, &ev); - return ev.id; + return ev.id; + } + return BUTTON_NONE; } #ifdef HAVE_RECORDER_KEYPAD |