ir.c File Reference

The functions for the ir-transmitting and receiving. Hopefully the same file as the Robot gets. More...

#include "ir.h"
#include <avr/interrupt.h>
#include <avr/eeprom.h>

Go to the source code of this file.

Defines
#define	IRON   (PORTB |= _BV(PB4))
#define	IROFF   (PORTB &= ~_BV(PB4))
#define	IRTOGGLE   (PORTB ^= _BV(PB4))
#define	DATA(x)   (data[x>>3]&(1<<(7-(x%8))))
#define	IRSBUF(x)   (irsbuf[x>>3]&(1<<(7-(x%8))))
Functions
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	ir_send (u08 *irbuf_)
	sends one pulse of ir ("<length>blablabla")
void	start_ir_r ()
	starts the receiving of a pulse
void	ir_string_send (u08 *se)
	sends a string of ir-datas ( "blablabla\0")
void	do_ir_string ()
	handles string sending
u08	ir_comp (irdatatype cmp_target, irdatatype read_ir)
	Compares two IR pulses.
void	ir_and (irdatatype res, irdatatype and2)
	builds a mask for the ir-pulses. Only important in the Station.
Variables
u16	irtime
s16	irbit
volatile irdatatype	irrbuf
	received single ir-pulse ("<length>blablabla")
volatile u08	irrstring [IRMSLENGTH]
	received string. ("<length>blablabla")
volatile u08 *	irsbuf
volatile u08 *	senddata
	pointer to the data to send just for the INT-function
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.
irdatatype	cmp_target [IRKEYS]

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Detailed Description

The functions for the ir-transmitting and receiving. Hopefully the same file as the Robot gets.

Definition in file ir.c.

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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. Referenced by ir_comp(), and main().

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(), and ir_send().

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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