diff options
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/button.c | 132 |
1 files changed, 69 insertions, 63 deletions
diff --git a/firmware/button.c b/firmware/button.c index 2bea49879c..bedd294606 100644 --- a/firmware/button.c +++ b/firmware/button.c @@ -61,20 +61,20 @@ static int count; /* Number of calls button has been down */ void button_init() { #ifndef SIMULATOR - /* Set PB4 and PB8 as input pins */ - PBCR1 &= 0xfffc; /* PB8MD = 00 */ - PBCR2 &= 0xfcff; /* PB4MD = 00 */ - PBIOR &= ~(PBDR_BTN_ON|PBDR_BTN_OFF); /* Inputs */ + /* Set PB4 and PB8 as input pins */ + PBCR1 &= 0xfffc; /* PB8MD = 00 */ + PBCR2 &= 0xfcff; /* PB4MD = 00 */ + PBIOR &= ~(PBDR_BTN_ON|PBDR_BTN_OFF); /* Inputs */ - /* Set A/D to scan AN4 and AN5. - * This needs to be changed to scan other analog pins - * for battery level, etc. */ - ADCSR = 0; - ADCR = 0; - ADCSR = ADCSR_ADST | ADCSR_SCAN | 0x5; + /* Set A/D to scan AN4 and AN5. + * This needs to be changed to scan other analog pins + * for battery level, etc. */ + ADCSR = 0; + ADCR = 0; + ADCSR = ADCSR_ADST | ADCSR_SCAN | 0x5; #endif - last = BUTTON_NONE; - count = 0; + last = BUTTON_NONE; + count = 0; } /* @@ -82,36 +82,36 @@ void button_init() */ static int get_raw_button (void) { - /* Check port B pins for ON and OFF */ - int data = PBDR; - if ((data & PBDR_BTN_ON) == 0) - return BUTTON_ON; - else if ((data & PBDR_BTN_OFF) == 0) - return BUTTON_OFF; - - /* Check AN4 pin for F1-3 and UP */ - data = ADDRAH; - if (data >= LEVEL4) - return BUTTON_F3; - else if (data >= LEVEL3) - return BUTTON_UP; - else if (data >= LEVEL2) - return BUTTON_F2; - else if (data >= LEVEL1) - return BUTTON_F1; - - /* Check AN5 pin for DOWN, PLAY, LEFT, RIGHT */ - data = ADDRBH; - if (data >= LEVEL4) - return BUTTON_DOWN; - else if (data >= LEVEL3) - return BUTTON_PLAY; - else if (data >= LEVEL2) - return BUTTON_LEFT; - else if (data >= LEVEL1) - return BUTTON_RIGHT; + /* Check port B pins for ON and OFF */ + int data = PBDR; + if ((data & PBDR_BTN_ON) == 0) + return BUTTON_ON; + else if ((data & PBDR_BTN_OFF) == 0) + return BUTTON_OFF; + + /* Check AN4 pin for F1-3 and UP */ + data = ADDRAH; + if (data >= LEVEL4) + return BUTTON_F3; + else if (data >= LEVEL3) + return BUTTON_UP; + else if (data >= LEVEL2) + return BUTTON_F2; + else if (data >= LEVEL1) + return BUTTON_F1; + + /* Check AN5 pin for DOWN, PLAY, LEFT, RIGHT */ + data = ADDRBH; + if (data >= LEVEL4) + return BUTTON_DOWN; + else if (data >= LEVEL3) + return BUTTON_PLAY; + else if (data >= LEVEL2) + return BUTTON_LEFT; + else if (data >= LEVEL1) + return BUTTON_RIGHT; - return BUTTON_NONE; + return BUTTON_NONE; } /* @@ -123,29 +123,35 @@ static int get_raw_button (void) */ int button_get(void) { - int btn = get_raw_button(); - int ret; - - /* Last button pressed is still down */ - if (btn != BUTTON_NONE && btn == last) { - count++; - if (count == BOUNCE_COUNT) - return btn; - else if (count >= HOLD_COUNT) - return btn | BUTTON_HELD; + int btn = get_raw_button(); + int ret; + + /* Last button pressed is still down */ + if (btn != BUTTON_NONE && btn == last) { + count++; + if (count == BOUNCE_COUNT) + return btn; + else if (count >= HOLD_COUNT) + return btn | BUTTON_HELD; + else + return BUTTON_NONE; + } + + /* Last button pressed now released */ + if (btn == BUTTON_NONE && last != BUTTON_NONE) + ret = last | BUTTON_REL; else - return BUTTON_NONE; - } - - /* Last button pressed now released */ - if (btn == BUTTON_NONE && last != BUTTON_NONE) - ret = last | BUTTON_REL; - else - ret = BUTTON_NONE; - - last = btn; - count = 0; - return ret; + ret = BUTTON_NONE; + + last = btn; + count = 0; + return ret; } #endif /* HAVE_RECORDER_KEYPAD */ + +/* ----------------------------------------------------------------- + * local variables: + * eval: (load-file "rockbox-mode.el") + * end: + */ |