186 lines
3.6 KiB
C
186 lines
3.6 KiB
C
/*
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ir_rec80.c - nec rec80 and derivates ir encoder
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Copyright (C) 2007 Ch. Klippel <ck@mamalala.net>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "lpc2220.h"
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#include "infrared.h"
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#include "ir_rec80.h"
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#include "encoders.h"
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#include "codes.h"
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const struct irModule REC80_Module =
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{
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REC80_Encode,
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REC80_Send,
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REC80_Repeat,
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REC80_Stop,
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151, // carrier
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1, // carrier-on
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3 // carrier-off
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};
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extern volatile unsigned char mod_enable;
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extern volatile unsigned int cycles;
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extern volatile unsigned long keyMap[42];
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#define REC80_IDLE 0x00
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#define REC80_HEAD_A 0x01
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#define REC80_HEAD_B 0x02
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#define REC80_PRE_A 0x03
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#define REC80_PRE_B 0x04
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#define REC80_BIT_A 0x05
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#define REC80_BIT_B 0x06
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#define REC80_TRAIL 0x07
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#define REC80_WAIT 0x08
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#define REC80_HEADER_1 128
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#define REC80_HEADER_0 51
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#define REC80_BONTIME 13
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#define REC80_BITTIME_0 13
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#define REC80_BITTIME_1 38
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#define REC80_WAITTIME 187
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void __attribute__ ((section(".text.fastcode"))) REC80_Encode (void)
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{
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switch(ir.state)
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{
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case REC80_IDLE:
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mod_enable = 0;
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break;
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case REC80_HEAD_B:
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mod_enable = 0;
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cycles = REC80_HEADER_0;
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ir.cmd = ir.general.preamble;
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ir.general.bit = 0;
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ir.state++;
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break;
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case REC80_HEAD_A:
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case REC80_PRE_A:
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case REC80_BIT_A:
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case REC80_TRAIL:
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mod_enable = 1;
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if(ir.state == REC80_HEAD_A)
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cycles = REC80_HEADER_1;
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else
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cycles = REC80_BONTIME;
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ir.state++;
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break;
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case REC80_PRE_B:
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case REC80_BIT_B:
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mod_enable = 0;
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if(ir.cmd & 0x01)
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cycles = REC80_BITTIME_1;
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else
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cycles = REC80_BITTIME_0;
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ir.cmd >>= 1;
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ir.general.bit++;
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if(ir.general.bit == ir.general.numbits)
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{
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if(ir.state == REC80_PRE_B)
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{
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ir.general.bit = 0;
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ir.cmd = ir.actcmd;
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}
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ir.state++;
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}
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else
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ir.state--;
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break;
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case REC80_WAIT:
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mod_enable = 0;
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ir.general.wait++;
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cycles = REC80_BONTIME; // 1 ms
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if(ir.general.wait >= ir.general.pause)
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{
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ir.general.bit = 0;
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ir.general.wait = 0;
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ir.state = REC80_IDLE;
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}
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break;
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}
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}
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void REC80_LoadMap(unsigned char map)
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{
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switch(map)
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{
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default:
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ir.general.preamble = 0x00A02002;
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copyMapI((unsigned int*)REC80.table[map].codes);
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break;
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}
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}
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void REC80_Init(unsigned char map)
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{
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if(map < REC80.num_tables)
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{
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ir.cmd = 0x00000000;
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ir.actcmd = 0x00000000;
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ir.general.bit = 0;
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ir.general.numbits = 24;
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ir.general.wait = 0;
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ir.general.pause = REC80_WAITTIME;
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ir.state = REC80_IDLE;
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REC80_LoadMap(map);
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setIR(REC80_Module);
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}
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}
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void REC80_Send(unsigned long cmd)
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{
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ir.actcmd = cmd;
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if(ir.actcmd & 0x80000000)
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ir.general.numbits = 24;
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else
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ir.general.numbits = 0;
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ir.actcmd &= 0x0FFFFFFF;
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setIRspeed(REC80_Module);
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REC80_Repeat();
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}
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void REC80_Repeat(void)
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{
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if(ir.actcmd != 0x00000000)
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{
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if(ir.state == REC80_IDLE)
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{
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ir.state++;
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runIR();
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}
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}
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}
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void REC80_Stop(void)
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{
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if(ir.actcmd != 0x00000000)
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{
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waitend:
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if(ir.state != REC80_IDLE)
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goto waitend;
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}
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ir.actcmd = 0x00000000;
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stopIR();
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}
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