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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr & Nick Robinson
*
* 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 <stdlib.h>
#include "button.h"
#include "config.h"
#include "sh7034.h"
#include "system.h"
#include "kernel.h"
#include "backlight.h"
#include "adc.h"
#include "lcd.h"
#include "serial.h"
/* Received byte identifiers */
#define PLAY 0xC1
#define STOP 0xC2
#define PREV 0xC4
#define NEXT 0xC8
#define VOLUP 0xD0
#define VOLDN 0xE0
#ifdef SCREENDUMP
#define SCRDMP 0xF0
static void screen_dump(void);
#endif
void serial_setup (void)
{
SMR1 = 0x00;
SCR1 = 0;
BRR1 = (FREQ/(32*9600))-1;
SSR1 &= 0; /* The status bits must be read before they are cleared,
so we do an AND operation */
/* Let the hardware settle. The serial port needs to wait "at least
the interval required to transmit or receive one bit" before it
can be used. */
sleep(1);
SCR1 = 0x10; /* Enable the receiver, no interrupt */
}
/* This function returns the received remote control code only if it is
received without errors before or after the reception.
It therefore returns the received code on the second call after the
code has been received. */
int remote_control_rx(void)
{
static int last_valid_button = BUTTON_NONE;
static int last_was_error = false;
int btn;
int ret = BUTTON_NONE;
/* Errors? Just clear'em. The receiver stops if we don't */
if(SSR1 & (SCI_ORER | SCI_FER | SCI_PER)) {
SSR1 &= ~(SCI_ORER | SCI_FER | SCI_PER);
last_valid_button = BUTTON_NONE;
last_was_error = true;
return BUTTON_NONE;
}
if(SSR1 & SCI_RDRF) {
/* Read byte and clear the Rx Full bit */
btn = RDR1;
SSR1 &= ~SCI_RDRF;
if(last_was_error)
{
last_valid_button = BUTTON_NONE;
ret = BUTTON_NONE;
}
else
{
switch (btn)
{
case STOP:
#ifdef HAVE_RECORDER_KEYPAD
last_valid_button = BUTTON_OFF;
#else
last_valid_button = BUTTON_STOP;
#endif
break;
case PLAY:
last_valid_button = BUTTON_PLAY;
break;
case VOLUP:
last_valid_button = BUTTON_VOL_UP;
break;
case VOLDN:
last_valid_button = BUTTON_VOL_DOWN;
break;
case PREV:
last_valid_button = BUTTON_LEFT;
break;
case NEXT:
last_valid_button = BUTTON_RIGHT;
break;
#ifdef SCREENDUMP
case SCRDMP:
screen_dump();
break;
#endif
default:
last_valid_button = BUTTON_NONE;
break;
}
}
}
else
{
/* This means that a valid remote control character was received
the last time we were called, with no receiver errors either before
or after. Then we can assume that there really is a remote control
attached, and return the button code. */
ret = last_valid_button;
last_valid_button = BUTTON_NONE;
}
last_was_error = false;
return ret;
}
#ifdef SCREENDUMP
static void serial_enable_tx(void)
{
SCR1 |= 0x20;
}
static void serial_tx(unsigned char ch)
{
while (!(SSR1 & SCI_TDRE))
{
;
}
/*
* Write data into TDR and clear TDRE
*/
TDR1 = ch;
SSR1 &= ~SCI_TDRE;
}
static void screen_dump(void)
{
int x, y;
int level;
serial_enable_tx();
level = set_irq_level(15);
for(y = 0;y < LCD_HEIGHT/8;y++)
{
for(x = 0;x < LCD_WIDTH;x++)
{
serial_tx(lcd_framebuffer[x][y]);
}
}
set_irq_level(level);
}
#endif
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