| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id: $ |
| * |
| * Copyright (C) 2007 by Karl Kurbjun |
| * |
| * All files in this archive are subject to the GNU General Public License. |
| * See the file COPYING in the source tree root for full license agreement. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #include "config.h" |
| #include "cpu.h" |
| #include "system.h" |
| #include "button.h" |
| #include "kernel.h" |
| #include "backlight.h" |
| #include "adc.h" |
| #include "system.h" |
| #include "backlight-target.h" |
| #include "uart-target.h" |
| |
| #define BUTTON_TIMEOUT 50 |
| |
| #define BUTTON_START_BYTE 0xF0 |
| #define BUTTON_START_BYTE2 0xF4 /* not sure why, but sometimes you get F0 or F4, */ |
| /* but always the same one for the session? */ |
| |
| void button_init_device(void) |
| { |
| /* GIO is the power button, set as input */ |
| outw(inw(IO_GIO_DIR0)|0x01, IO_GIO_DIR0); |
| } |
| |
| inline bool button_hold(void) |
| { |
| return false; |
| } |
| |
| int button_read_device(void) |
| { |
| char data[5], c; |
| int val; |
| int i = 0; |
| int btn = BUTTON_NONE, timeout = BUTTON_TIMEOUT; |
| |
| if ((inw(IO_GIO_BITSET0)&0x01) == 0) |
| btn |= BUTTON_POWER; |
| |
| uartHeartbeat(); |
| while (timeout > 0) |
| { |
| val = uartPollch(BUTTON_TIMEOUT*100); |
| if (val > -1) |
| { |
| c = val&0xff; |
| if (i && (data[0] == BUTTON_START_BYTE || data[0] == BUTTON_START_BYTE2)) |
| { |
| data[i++] = c; |
| } |
| else if (c == BUTTON_START_BYTE || |
| c == BUTTON_START_BYTE2) |
| { |
| data[0] = c; |
| i = 1; |
| } |
| |
| if (i == 5) |
| { |
| if (data[1]& (1<<7)) |
| btn |= BUTTON_RC_HEART; |
| if (data[1]& (1<<6)) |
| btn |= BUTTON_RC_MODE; |
| if (data[1]& (1<<5)) |
| btn |= BUTTON_RC_VOL_DOWN; |
| if (data[1]& (1<<4)) |
| btn |= BUTTON_RC_VOL_UP; |
| if (data[1]& (1<<3)) |
| btn |= BUTTON_RC_REW; |
| if (data[1]& (1<<2)) |
| btn |= BUTTON_RC_FF; |
| if (data[1]& (1<<1)) |
| btn |= BUTTON_RC_DOWN; |
| if (data[1]& (1<<0)) |
| btn |= BUTTON_RC_PLAY; |
| break; |
| } |
| } |
| timeout--; |
| } |
| return btn; |
| } |