ir.h File Reference

#include <avr/io.h>
#include "basic.h"

Go to the source code of this file.

Defines
#define	IRMLENGTH   20 /*!< maximum pulse length in bytes */
#define	IRMSLENGTH   30 /*!< maximum string length in bytes */
#define	IRDATABITTIME   12 /*!< bit time in 36kHz cycles for data transmiting */
#define	IRDATABYTETIME   128 /*!< time to wait while a byte is transmitted */
#define	IRKEYS   4 /*!< number of recognized keys <=5 */
#define	ISIRON   ((PIND & _BV(PD4))==0) /*!< 1: ir-on, 0: ir-off */
#define	WAITIR   {sei(); while (sendready == 0) _NOP; cli(); } while (0)
Typedefs
typedef u08	irdatatype [IRMLENGTH]
	type to store the information from IR
Functions
void	ir_send (u08 *irbuf_)
	sends one pulse of ir ("<length>blablabla")
void	ir_string_send (u08 *se)
	sends a string of ir-datas ( "blablabla\0")
u08	ir_comp (irdatatype cmp_target, irdatatype read_ir)
	Compares two IR pulses.
u08	ir_to_val (irdatatype data)
	Converts and returns an ir-impuls as value.
u08 *	val_to_ir (u08 dat)
	Converts a byte-value to an ir-impuls stored in irdata.
void	do_ir ()
	handles the lowlevel tranmission and receiving
void	start_ir_r ()
	starts the receiving of a pulse
void	do_ir_string ()
	handles string sending
Variables
u08	irerror
	error code of last ir pulse conversation
u08	irbittime
	length of one bit in 36kHz cycles
irdatatype	cmp_target [IRKEYS]
	datas read from eeprom for ircont (ir_load())
volatile irdatatype	irrbuf
	received single ir-pulse ("<length>blablabla")
volatile u08	irrstring [IRMSLENGTH]
	received string. ("<length>blablabla")
volatile u08	pulsevalid
	pointer to the data to send
volatile u08	stringvalid
	Is set 1 if a valid string is received. Set it to 0 if computated. But also reset irrstring[0]!
volatile u08	sendready
	This variable is used to wait for the IR-String send routines. It's used in WAITIR.
volatile u08 *	senddata
	pointer to the data to send just for the INT-function

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Detailed Description

Definition in file ir.h.

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Define Documentation

#define IRDATABITTIME   12 /*!< bit time in 36kHz cycles for data transmiting */

bit time in 36kHz cycles for data transmiting Definition at line 19 of file ir.h.

#define IRDATABYTETIME   128 /*!< time to wait while a byte is transmitted */

time to wait while a byte is transmitted Definition at line 21 of file ir.h. Referenced by do_ir_string().

#define IRKEYS   4 /*!< number of recognized keys <=5 */

number of recognized keys <=5 Definition at line 23 of file ir.h.

#define IRMLENGTH   20 /*!< maximum pulse length in bytes */

maximum pulse length in bytes Definition at line 15 of file ir.h. Referenced by do_ir(), and start_ir_r().

#define IRMSLENGTH   30 /*!< maximum string length in bytes */

maximum string length in bytes Definition at line 17 of file ir.h. Referenced by do_ir().

#define ISIRON   ((PIND & _BV(PD4))==0) /*!< 1: ir-on, 0: ir-off */

1: ir-on, 0: ir-off Definition at line 30 of file ir.h. Referenced by do_ir(), and SIGNAL().

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Typedef Documentation

irdatatype

type to store the information from IR The bits are written/read from left to right. A '0' means signal 'off' a '1' means 'on'. The timing is determined by irbittime and the 36kHz clock from modulation. The first byte is the length of the string (including it self). So the string "04 aa 00 aa ff" wouldn't send the last FF! Definition at line 35 of file ir.h. Referenced by ir_comp(), ir_to_val(), and val_to_ir().

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Function Documentation

void do_ir (   )

handles the lowlevel tranmission and receiving The results of receiving are stored in irbuf and irstring. The values pulsevalid and stringvalid return if any data was received. Definition at line 75 of file ir.c. Referenced by SIGNAL().

u08 ir_comp (  irdatatype  cmp_target, irdatatype  read_ir )

Compares two IR pulses. This is used for ircont. The bigger the result the narrower the pulses. Parameters: read_ir  The received pulse. cmp_target  The stored "and"-array. It is generated by the loading station. Definition at line 166 of file ir.c.

void ir_send (  u08 *  irbuf_  )

sends one pulse of ir ("<length>blablabla") This will last (irbuf_[0] * irbittime /36000) while nothing else will be computated. The data is given in irbuf_ < send an ir pulse Definition at line 119 of file ir.c. Referenced by do_ir_string().

void start_ir_r (   )

starts the receiving of a pulse This will last maximum (irlength * irbittime / 36000) while nothing else will be computated. The result will be writte to irbuf Definition at line 130 of file ir.c. Referenced by SIGNAL().

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