diff options
| author | Linus Nielsen Feltzing <linus@haxx.se> | 2002-06-30 20:24:57 +0000 |
|---|---|---|
| committer | Linus Nielsen Feltzing <linus@haxx.se> | 2002-06-30 20:24:57 +0000 |
| commit | d1c88e728ba324fa38a59656bfce4db2cf6d8db7 (patch) | |
| tree | a12d840cd1bfa9462a97134df235c1fbd7d0d6ac /firmware/drivers/button.c | |
| parent | 3189353946ad221a9a0254ca6a7ff10fde172b09 (diff) | |
Now uses adc_read()
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1276 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/button.c')
| -rw-r--r-- | firmware/drivers/button.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/firmware/drivers/button.c b/firmware/drivers/button.c index 327654e3e1..9805c1858a 100644 --- a/firmware/drivers/button.c +++ b/firmware/drivers/button.c @@ -27,6 +27,7 @@ #include "button.h" #include "kernel.h" #include "backlight.h" +#include "adc.h" struct event_queue button_queue; @@ -118,7 +119,7 @@ int button_get(bool block) * * DOWN, PLAY, LEFT, and RIGHT are likewise connected to AN5. */ -/* Button voltage levels on AN4 and AN5 */ +/* Button analog voltage levels */ #define LEVEL1 50 #define LEVEL2 125 #define LEVEL3 175 @@ -134,13 +135,6 @@ void button_init() 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; #endif queue_init(&button_queue); tick_add_task(button_tick); @@ -158,8 +152,8 @@ static int button_read(void) else if ((data & PBDR_BTN_OFF) == 0) return BUTTON_OFF; - /* Check AN4 pin for F1-3 and UP */ - data = ADDRAH; + /* Check F1-3 and UP */ + data = adc_read(ADC_BUTTON_ROW1); if (data >= LEVEL4) return BUTTON_F3; else if (data >= LEVEL3) @@ -169,8 +163,8 @@ static int button_read(void) else if (data >= LEVEL1) return BUTTON_F1; - /* Check AN5 pin for DOWN, PLAY, LEFT, RIGHT */ - data = ADDRBH; + /* Check DOWN, PLAY, LEFT, RIGHT */ + data = adc_read(ADC_BUTTON_ROW2); if (data >= LEVEL4) return BUTTON_DOWN; else if (data >= LEVEL3) |