| Jens Arnold | 0e6dd7e | 2006-11-27 02:16:32 +0000 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * __________ __ ___. |
| 3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| 4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| 5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| 6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| 7 | * \/ \/ \/ \/ \/ |
| 8 | * $Id$ |
| 9 | * |
| 10 | * Copyright (C) 2006 by Jens Arnold |
| 11 | * |
| Daniel Stenberg | 2acc0ac | 2008-06-28 18:10:04 +0000 | [diff] [blame^] | 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License |
| 14 | * as published by the Free Software Foundation; either version 2 |
| 15 | * of the License, or (at your option) any later version. |
| Jens Arnold | 0e6dd7e | 2006-11-27 02:16:32 +0000 | [diff] [blame] | 16 | * |
| 17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| 18 | * KIND, either express or implied. |
| 19 | * |
| 20 | ****************************************************************************/ |
| 21 | |
| 22 | #include "config.h" |
| 23 | #include "system.h" |
| 24 | #include "button.h" |
| 25 | #include "backlight.h" |
| 26 | #include "adc.h" |
| 27 | |
| 28 | /* |
| 29 | Recorder FM/V2 hardware button hookup |
| 30 | ===================================== |
| 31 | |
| 32 | F1, F2, F3, UP: connected to AN4 through a resistor network |
| 33 | DOWN, PLAY, LEFT, RIGHT: likewise connected to AN5 |
| 34 | |
| 35 | The voltage on AN4/ AN5 depends on which keys (or key combo) is pressed |
| 36 | FM/V2 has PLAY and RIGHT switched compared to plain recorder |
| 37 | |
| 38 | ON: AN3, low active |
| 39 | OFF: AN2, high active |
| 40 | */ |
| 41 | |
| 42 | void button_init_device(void) |
| 43 | { |
| 44 | /* Set PB4 and PB8 as input pins */ |
| 45 | PBCR1 &= 0xfffc; /* PB8MD = 00 */ |
| 46 | PBCR2 &= 0xfcff; /* PB4MD = 00 */ |
| 47 | PBIOR &= ~0x0110; /* Inputs */ |
| 48 | } |
| 49 | |
| 50 | int button_read_device(void) |
| 51 | { |
| 52 | int btn = BUTTON_NONE; |
| 53 | int data; |
| 54 | |
| 55 | /* check F1..F3 and UP */ |
| 56 | data = adc_read(ADC_BUTTON_ROW1); |
| 57 | if (data >= 150) |
| 58 | { |
| 59 | if (data >= 545) |
| 60 | if (data >= 700) |
| 61 | btn = BUTTON_F3; |
| 62 | else |
| 63 | btn = BUTTON_UP; |
| 64 | else |
| 65 | if (data >= 385) |
| 66 | btn = BUTTON_F2; |
| 67 | else |
| 68 | btn = BUTTON_F1; |
| 69 | } |
| 70 | |
| 71 | /* Some units have mushy keypads, so pressing UP also activates |
| 72 | the Left/Right buttons. Let's combat that by skipping the AN5 |
| 73 | checks when UP is pressed. */ |
| 74 | if(!(btn & BUTTON_UP)) |
| 75 | { |
| 76 | /* check DOWN, PLAY, LEFT, RIGHT */ |
| 77 | data = adc_read(ADC_BUTTON_ROW2); |
| 78 | if (data >= 150) |
| 79 | { |
| 80 | if (data >= 545) |
| 81 | if (data >= 700) |
| 82 | btn |= BUTTON_DOWN; |
| 83 | else |
| 84 | btn |= BUTTON_RIGHT; |
| 85 | else |
| 86 | if (data >= 385) |
| 87 | btn |= BUTTON_LEFT; |
| 88 | else |
| 89 | btn |= BUTTON_PLAY; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | if ( adc_read(ADC_BUTTON_ON) < 512 ) |
| 94 | btn |= BUTTON_ON; |
| 95 | if ( adc_read(ADC_BUTTON_OFF) > 512 ) |
| 96 | btn |= BUTTON_OFF; |
| 97 | |
| 98 | return btn; |
| 99 | } |