a8dab4c08a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4817 a1c6a512-1295-4272-9138-f99709370657
135 lines
4.1 KiB
C
135 lines
4.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Alan Korr & Nick Robinson
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdlib.h>
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#include "button.h"
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#include "config.h"
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#include "sh7034.h"
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#include "system.h"
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#include "kernel.h"
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#include "backlight.h"
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#include "adc.h"
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#include "lcd.h"
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#include "serial.h"
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/* Received byte identifiers */
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#define PLAY 0xC1
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#define STOP 0xC2
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#define PREV 0xC4
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#define NEXT 0xC8
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#define VOLUP 0xD0
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#define VOLDN 0xE0
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void serial_setup (void)
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{
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/* Set PB10 function to serial Rx */
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PBCR1 = (PBCR1 & 0xffcf) | 0x0020;
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SMR1 = 0x00;
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SCR1 = 0;
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BRR1 = (FREQ/(32*9600))-1;
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SSR1 &= 0; /* The status bits must be read before they are cleared,
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so we do an AND operation */
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/* Let the hardware settle. The serial port needs to wait "at least
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the interval required to transmit or receive one bit" before it
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can be used. */
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sleep(1);
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SCR1 = 0x10; /* Enable the receiver, no interrupt */
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}
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/* This function returns the received remote control code only if it is
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received without errors before or after the reception.
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It therefore returns the received code on the second call after the
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code has been received. */
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int remote_control_rx(void)
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{
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static int last_valid_button = BUTTON_NONE;
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static int last_was_error = false;
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int btn;
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int ret = BUTTON_NONE;
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/* Errors? Just clear'em. The receiver stops if we don't */
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if(SSR1 & (SCI_ORER | SCI_FER | SCI_PER)) {
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SSR1 &= ~(SCI_ORER | SCI_FER | SCI_PER);
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last_valid_button = BUTTON_NONE;
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last_was_error = true;
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return BUTTON_NONE;
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}
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if(SSR1 & SCI_RDRF) {
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/* Read byte and clear the Rx Full bit */
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btn = RDR1;
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SSR1 &= ~SCI_RDRF;
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if(last_was_error)
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{
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last_valid_button = BUTTON_NONE;
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ret = BUTTON_NONE;
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}
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else
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{
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#ifndef HAVE_NEO_KEYPAD /* This needs to be fixed for Neo */
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switch (btn)
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{
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case STOP:
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last_valid_button = BUTTON_RC_STOP;
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break;
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case PLAY:
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last_valid_button = BUTTON_RC_PLAY;
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break;
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case VOLUP:
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last_valid_button = BUTTON_RC_VOL_UP;
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break;
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case VOLDN:
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last_valid_button = BUTTON_RC_VOL_DOWN;
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break;
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case PREV:
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last_valid_button = BUTTON_RC_LEFT;
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break;
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case NEXT:
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last_valid_button = BUTTON_RC_RIGHT;
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break;
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default:
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last_valid_button = BUTTON_NONE;
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break;
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}
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#endif
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}
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}
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else
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{
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/* This means that a valid remote control character was received
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the last time we were called, with no receiver errors either before
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or after. Then we can assume that there really is a remote control
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attached, and return the button code. */
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ret = last_valid_button;
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last_valid_button = BUTTON_NONE;
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}
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last_was_error = false;
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return ret;
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}
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