// lab-irkit.h

//

// Authors: Hans-Gert Dahmen <sexyludernatascha@gmail.com>

//

// This program is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 2 of the License, or

// (at your option) any later version.

//

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

// MA 02110-1301, USA.

/*

* IR codes are stored in an array of on/off pulse lengths.

* As transmissions must always start with a one and consist

* of alternating ones and zeroes, every even index in the

* array will be a one-pulse and every odd array index

* will be a zero-pulse.

*/

#ifndef _H_LAB_IRKIT

#define _H_LAB_IRKIT

#include <avr/io.h>

//one tick is 16 µS long

//#define IR_TICK_US 16

#ifndef F_CPU

#error F_CPU not defined

#else

//standart IR frequencies, define your own here

#define IR_FREQ30K (uint16_t)(F_CPU/30000UL)

#define IR_FREQ33K (uint16_t)(F_CPU/33000UL)

#define IR_FREQ36K (uint16_t)(F_CPU/36000UL)

#define IR_FREQ38K (uint16_t)(F_CPU/38000UL)

#define IR_FREQ40K (uint16_t)(F_CPU/40000UL)

#define IR_FREQ56K (uint16_t)(F_CPU/56000UL)

#define IR_FREQ455K (uint16_t)(F_CPU/455000UL)

#endif

//define output PORT

#define IRPORT PORTA

#define IRDDR DDRA

#define IRUSEDPORTS 0x3

//define how long a carrier pulse last 0..1

//select 0.5 for normal LED mode or

//less values if you overcurrent the IR LEDs

#define IR_pulse_width 0.2f

//max SRAM usage

#define IR_MAX_SRAM 512

//see datasheet: http://www.princeton.com.tw/downloadprocess/downloadfile.asp?mydownload=PT2248.pdf

#define IR_PT2248_Carrier IR_FREQ38K

#define IR_PT2248_pulselength 422

#define IR_PT2248_oneCode 0b0001

#define IR_PT2248_oneCodelength 4

#define IR_PT2248_zeroCode 0b0111

#define IR_PT2248_zeroCodelength 4

#define IR_PT2248_header 0

#define IR_PT2248_headerlength 0

#define IR_PhilipsRC5_Carrier IR_FREQ36K

#define IR_PhilipsRC5_pulselength 889

#define IR_PhilipsRC5_oneCode 0b10

#define IR_PhilipsRC5_oneCodelength 2

#define IR_PhilipsRC5_zeroCode 0b01

#define IR_PhilipsRC5_zeroCodelength 2

#define IR_PhilipsRC5_header 0

#define IR_PhilipsRC5_headerlength 0

#define IR_PhilipsRC6_Carrier IR_FREQ36K

#define IR_PhilipsRC6_pulselength 444

#define IR_PhilipsRC6_oneCode 0b10

#define IR_PhilipsRC6_oneCodelength 2

#define IR_PhilipsRC6_zeroCode 0b01

#define IR_PhilipsRC6_zeroCodelength 2

#define IR_PhilipsRC6_header 0

#define IR_PhilipsRC6_headerlength 0

#define IR_SIRC_Carrier IR_FREQ40K

#define IR_SIRC_pulselength 600

#define IR_SIRC_oneCode 0b100

#define IR_SIRC_oneCodelength 3

#define IR_SIRC_zeroCode 0b10

#define IR_SIRC_zeroCodelength 2

#define IR_SIRC_header 0b11110

#define IR_SIRC_headerlength 5

#define IR_Sharp_Carrier IR_FREQ38K

#define IR_Sharp_pulselength 320

#define IR_Sharp_oneCode 0b100000

#define IR_Sharp_oneCodelength 6

#define IR_Sharp_zeroCode 0b100

#define IR_Sharp_zeroCodelength 3

#define IR_Sharp_header 0

#define IR_Sharp_headerlength 0

#define IR_NokiaNRC17_Carrier IR_FREQ38K

#define IR_NokiaNRC17_pulselength 500

#define IR_NokiaNRC17_oneCode 0b10

#define IR_NokiaNRC17_oneCodelength 2

#define IR_NokiaNRC17_zeroCode 0b01

#define IR_NokiaNRC17_zeroCodelength 2

#define IR_NokiaNRC17_header 0b100000

#define IR_NokiaNRC17_headerlength 6

#define IR_NEC_Carrier IR_FREQ38K

#define IR_NEC_pulselength 560

#define IR_NEC_oneCode 0b1000

#define IR_NEC_oneCodelength 4

#define IR_NEC_zeroCode 0b10

#define IR_NEC_zeroCodelength 2

#define IR_NEC_header 0b111111111111111100000000

#define IR_NEC_headerlength 24

#define IR_JVC_Carrier IR_FREQ38K

#define IR_JVC_pulselength 526

#define IR_JVC_oneCode 0b1000

#define IR_JVC_oneCodelength 4

#define IR_JVC_zeroCode 0b10

#define IR_JVC_zeroCodelength 2

#define IR_JVC_header 0b111111111111111100000000

#define IR_JVC_headerlength 24

/*

Code example:

#include <stdio.h>

#include <stdlib.h>

#include "lab-irkit2.h"

int main(void)

{

//initialize ir subsystem

ir_init(IR_NEC_Carrier, IR_NEC_pulselength);

uint8_t codelength=0;

ir_genHeader(0, IR_NEC_header, IR_NEC_headerlength); //generate header

codelength=ir_genCode(IR_NEC_headerlength,0,IR_NEC_oneCode,IR_NEC_oneCodelength,IR_NEC_zeroCode,IR_NEC_zeroCodelength,0b00010000110010001110000100011110, 32); //generate code

while (1)

{

ir_sendCode(codelength); //transmit code

}

}

*/

// stop TIMER1, disable IRPORT

#define FREQGEN_OFF() TCCR1B = 0; IRPORT&=IRDDR

// start TIMER1, reset timer count

#define FREQGEN_ON() TCNT1 = 0; TCCR1B = _BV(WGM12)|_BV(CS10) //counter is running now

//function prototypes

uint8_t ir_init(uint16_t freq, uint16_t pulselength);

void ir_disable(void);

uint16_t ir_genCode(uint8_t headerlength, uint8_t channel, uint8_t oneCode, uint8_t oneCode_length, uint8_t zeroCode,uint8_t zeroCode_length, uint32_t bitCode, uint8_t codeLen);

uint8_t ir_genHeader(uint8_t channel, uint32_t headerCode, uint8_t headerLen);

uint8_t ir_freqInit(uint16_t freq, uint16_t pulselength);

void ir_sendCode(uint16_t codeLen);

uint8_t transmission_pending(void);

//work in progress

/*typedef struct {

uint16_t oneOntime;

uint16_t oneOfftime;

uint16_t zeroOntime;

uint16_t zeroOfftime;

} ir_proto;*/

#endif //_H_LAB_IRKIT