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touchscreen: change odd sentinel value for time of last touch

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Using tick 0xffff does not make any sense, use -1 instead.

Change-Id: Id574eb35418c6713c4fc91ed539aadc42fd29aa5
This commit is contained in:
Aidan MacDonald 2021-08-30 01:23:39 +01:00
parent 7e428ad190
commit bff63a4f90
4 changed files with 8 additions and 8 deletions
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6
firmware/drivers/button.c
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@ -94,7 +94,7 @@ static int button_read(void);
#endif
#ifdef HAVE_TOUCHSCREEN
static int last_touchscreen_touch;
static long last_touchscreen_touch;
#endif
#if defined(HAVE_HEADPHONE_DETECTION)
static struct timeout hp_detect_timeout; /* Debouncer for headphone plug/unplug */
@ -542,7 +542,7 @@ void button_init(void)
#endif
#endif
#ifdef HAVE_TOUCHSCREEN
last_touchscreen_touch = 0xffff;
last_touchscreen_touch = -1;
#endif
/* Start polling last */
tick_add_task(button_tick);
@ -714,7 +714,7 @@ void button_clear_queue(void)
}
#ifdef HAVE_TOUCHSCREEN
int touchscreen_last_touch(void)
long touchscreen_last_touch(void)
{
return last_touchscreen_touch;
}