diff options
Diffstat (limited to 'firmware/target/arm/as3525/sansa-clip/button-clip.c')
| -rw-r--r-- | firmware/target/arm/as3525/sansa-clip/button-clip.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/firmware/target/arm/as3525/sansa-clip/button-clip.c b/firmware/target/arm/as3525/sansa-clip/button-clip.c deleted file mode 100644 index a64fddb564..0000000000 --- a/firmware/target/arm/as3525/sansa-clip/button-clip.c +++ /dev/null @@ -1,156 +0,0 @@ -/*************************************************************************** - * __________ __ ___. - * Open \______ \ ____ ____ | | _\_ |__ _______ ___ - * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / - * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < - * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ - * \/ \/ \/ \/ \/ - * $Id$ - * - * Copyright (C) 2009 Bertrik Sikken - * Copyright (C) 2008 François Dinel - * Copyright (C) 2008 Rafaël Carré - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ****************************************************************************/ -#include "system.h" -#include "button-target.h" -#include "as3525.h" -#ifndef BOOTLOADER /* backlight on hold handling */ -#include "backlight.h" -#endif - -/* The Sansa Clip uses a button matrix that is scanned by selecting one of - three rows and reading back the button states from the columns. - - In this driver, the row is changed at each call (i.e. once per tick). - In one tick, column data from one row is read back and then the next row - is selected for the following tick. This mechanism ensures that there is - plenty time between selecting a row and reading the columns, avoiding the - need for explicit delays. -*/ - - -void button_init_device(void) -{ - GPIOA_DIR &= ~((1<<7) | (1<<3)); - GPIOB_DIR &= ~((1<<2) | (1<<1) | (1<<0)); - GPIOC_PIN(4) = 0; - GPIOC_PIN(5) = 0; - GPIOC_PIN(6) = 0; - GPIOC_DIR |= ((1<<6) | (1<<5) | (1<<4)); - - /* get initial readings */ - button_read_device(); - button_read_device(); - button_read_device(); -} - -int button_read_device(void) -{ - static int row = 0; - static int buttons = 0; - static unsigned power_counter = 0; - - if(button_hold()) - { - power_counter = HZ; - return 0; - } - - /* direct GPIO connections */ - /* read power, but not if hold button was just released, since - * you basically always hit power due to the slider mechanism after - * releasing hold (wait 1 sec) */ - if (power_counter) - power_counter--; - - if (GPIOA_PIN(7) && !power_counter) - buttons |= BUTTON_POWER; - else - buttons &= ~BUTTON_POWER; - - /* This is a keypad using C4-C6 as columns and B0-B2 as rows */ - switch (row) { - - case 0: - buttons &= ~(BUTTON_VOL_UP | BUTTON_UP); - - (void)GPIOB_PIN(0); /* C4B0 is unused */ - - if (GPIOB_PIN(1)) - buttons |= BUTTON_VOL_UP; - - if (GPIOB_PIN(2)) - buttons |= BUTTON_UP; - - GPIOC_PIN(4) = 0; - GPIOC_PIN(5) = (1<<5); - row++; - break; - - case 1: - buttons &= ~(BUTTON_LEFT | BUTTON_SELECT | BUTTON_RIGHT); - - if (GPIOB_PIN(0)) - buttons |= BUTTON_LEFT; - - if (GPIOB_PIN(1)) - buttons |= BUTTON_SELECT; - - if (GPIOB_PIN(2)) - buttons |= BUTTON_RIGHT; - - GPIOC_PIN(5) = 0; - GPIOC_PIN(6) = (1<<6); - row++; - break; - - case 2: - buttons &= ~(BUTTON_DOWN | BUTTON_VOL_DOWN | BUTTON_HOME); - - if (GPIOB_PIN(0)) - buttons |= BUTTON_DOWN; - - if (GPIOB_PIN(1)) - buttons |= BUTTON_VOL_DOWN; - - if (GPIOB_PIN(2)) - buttons |= BUTTON_HOME; - - GPIOC_PIN(6) = 0; - GPIOC_PIN(4) = (1<<4); - - default: - row = 0; - break; - } - - return buttons; -} - -bool button_hold(void) -{ - bool hold_button = (GPIOA_PIN(3) != 0); - -#ifndef BOOTLOADER - /* backlight handling */ - - static bool hold_button_old = false; - - if (hold_button != hold_button_old) - { - hold_button_old = hold_button; - backlight_hold_changed(hold_button); - } -#endif /* BOOTLOADER */ - - return hold_button; -} |