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Added timer-interrupt polling and button queue

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@659 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2002-05-23 09:26:20 +00:00
parent 29f80283e9
commit 2549234bd7
1 changed files with 35 additions and 2 deletions
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37
firmware/drivers/button.c
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@ -20,9 +20,38 @@
* Archos Jukebox Recorder button functions
*/
#include <stdlib.h>
#include "config.h"
#include "sh7034.h"
#include "button.h"
#include "kernel.h"
static struct event_queue button_queue;
#define POLL_FREQUENCY HZ/10
static int button_read(void);
static void button_tick(void)
{
static int counter=0;
/* only poll every X ticks */
if ( counter++ > POLL_FREQUENCY ) {
int btn = button_read();
queue_post(&button_queue, btn, NULL);
counter=0;
}
}
int button_get(void)
{
struct event ev;
if ( !queue_empty(&button_queue) )
queue_wait(&button_queue, &ev);
return ev.id;
}
#ifdef HAVE_RECORDER_KEYPAD
@ -73,6 +102,8 @@ void button_init()
#endif
last = BUTTON_NONE;
count = 0;
queue_init(&button_queue);
tick_add_task(button_tick);
}
/*
@ -119,7 +150,7 @@ static int get_raw_button (void)
* BUTTON_HELD bit is while the button is being held.
* BUTTON_REL bit is set when button has been released.
*/
int button_get(void)
static int button_read(void)
{
int btn = get_raw_button();
int ret;
@ -162,9 +193,11 @@ void button_init(void)
{
/* set port pins as input */
PAIOR &= ~0x820;
queue_init(&button_queue);
tick_add_task(button_tick);
}
int button_get(void)
static int button_read(void)
{
int porta = PADR;
int portc = PCDR;