onewire_internal.h File Reference

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include "dev_data.h"
#include "debug.h"
#include "uart.h"
#include "features.h"
#include "onewire.h"
#include "moat.h"

Go to the source code of this file.

Classes
union	ow_addr_t

Macros
#define	NO_DEBUG
#define	EICRA   MCUCR
#define	PRESCALE   64
#define	_ADD_T   0
#define	T_(c)   ((F_CPU/PRESCALE)/(1000000/c)-_ADD_T)
#define	OWT_MIN_RESET   T_(410)
#define	OWT_RESET_PRESENCE   (T_(40)-1)
#define	OWT_PRESENCE   (T_(160)-1)
#define	OWT_READLINE   (T_(30)-2)
#define	OWT_LOWTIME   (T_(40)-2)
#define	PSRSYNC   PSR0
#define	EN_TIMER()   do {TIMSK0 |= (1<<TOIE0); TIFR0|=(1<<TOV0);}while(0)
#define	DIS_TIMER()   do {TIMSK0 &= ~(1<<TOIE0);} while(0)
#define	SET_TIMER(x)   do { GTCCR = (1<<PSRSYNC); TCNT0=(uint8_t)~(x); } while(0)
#define	TIMER_INT   ISR(TIMER0_OVF_vect)
#define	TIMER0_OVF_vect   TIM0_OVF_vect
#define	SET_LOW()   do { ONEWIRE_DDR|=ONEWIRE_PBIT;} while(0)
#define	CLEAR_LOW()   do {ONEWIRE_DDR&=~ONEWIRE_PBIT;} while(0)
#define	START_READING(bits)
#define	wait_complete(c)   _wait_complete()

Enumerations
enum	mode_t {   OWM_SLEEP, OWM_IN_RESET, OWM_AFTER_RESET, OWM_PRESENCE,   OWM_SEARCH_ZERO, OWM_SEARCH_ONE, OWM_SEARCH_READ, OWM_IDLE,   OWM_READ, OWM_WRITE }
enum	xmode_t { OWX_IDLE, OWX_SELECT, OWX_COMMAND, OWX_RUNNING }
enum	wmode_t { OWW_WRITE_0, OWW_WRITE_1, OWW_NO_WRITE }

Functions
void	onewire_init (void)
void	_wait_complete (void)
void	next_command (void) __attribute__((noreturn))
void	xmit_byte (uint8_t val)
uint16_t	xmit_byte_crc (uint16_t crc, uint8_t val)
uint16_t	xmit_bytes_crc (uint16_t crc, uint8_t *buf, uint8_t len)
uint8_t	recv_any_in (void)
void	recv_byte (void)
uint16_t	recv_bytes_crc (uint16_t crc, uint8_t *buf, uint8_t len)
uint16_t	crc16 (uint16_t r, uint8_t x)
void	onewire_poll (void)
void	set_idle (void)

Variables
ow_addr_t	ow_addr
volatile uint8_t	bitp
volatile uint8_t	bytep
volatile uint8_t	cbuf
volatile mode_t	mode
volatile xmode_t	xmode
volatile wmode_t	wmode
volatile uint8_t	actbit

Macro Definition Documentation

#define _ADD_T   0

#define CLEAR_LOW

(

)

do {ONEWIRE_DDR&=~ONEWIRE_PBIT;} while(0)

#define DIS_TIMER

(

)

do {TIMSK0 &= ~(1<<TOIE0);} while(0)

#define EICRA   MCUCR

#define EN_TIMER

(

)

do {TIMSK0 |= (1<<TOIE0); TIFR0|=(1<<TOV0);}while(0)

#define NO_DEBUG

#define OWT_LOWTIME   (T_(40)-2)

#define OWT_MIN_RESET   T_(410)

#define OWT_PRESENCE   (T_(160)-1)

#define OWT_READLINE   (T_(30)-2)

#define OWT_RESET_PRESENCE   (T_(40)-1)

#define PRESCALE   64

#define PSRSYNC   PSR0

#define SET_LOW

(

)

do { ONEWIRE_DDR|=ONEWIRE_PBIT;} while(0)

#define SET_TIMER

(

x

)

do { GTCCR = (1<<PSRSYNC); TCNT0=(uint8_t)~(x); } while(0)

#define START_READING

(

bits

)

Value:

do { \
	lmode = OWM_READ; \
	cbuf=0; \
	lbitp=1<<(8-bits); \
} while(0)

#define T_

(

c

)

((F_CPU/PRESCALE)/(1000000/c)-_ADD_T)

#define TIMER0_OVF_vect   TIM0_OVF_vect

#define TIMER_INT   ISR(TIMER0_OVF_vect)

#define wait_complete

(

c

)

_wait_complete()

Enumeration Type Documentation

enum mode_t

Enumerator
OWM_SLEEP
OWM_IN_RESET
OWM_AFTER_RESET
OWM_PRESENCE
OWM_SEARCH_ZERO
OWM_SEARCH_ONE
OWM_SEARCH_READ
OWM_IDLE
OWM_READ
OWM_WRITE

enum wmode_t

Enumerator
OWW_WRITE_0
OWW_WRITE_1
OWW_NO_WRITE

enum xmode_t

Enumerator
OWX_IDLE
OWX_SELECT
OWX_COMMAND
OWX_RUNNING

Function Documentation

void _wait_complete

(

void

)

uint16_t crc16	(	uint16_t	r,
		uint8_t	x
	)

void next_command

(

void

)

void onewire_init

(

void

)

void onewire_poll

(

void

)

uint8_t recv_any_in

(

void

)

void recv_byte

(

void

)

uint16_t recv_bytes_crc	(	uint16_t	crc,
		uint8_t *	buf,
		uint8_t	len
	)

void set_idle

(

void

)

void xmit_byte

(

uint8_t

val

)

uint16_t xmit_byte_crc	(	uint16_t	crc,
		uint8_t	val
	)

uint16_t xmit_bytes_crc	(	uint16_t	crc,
		uint8_t *	buf,
		uint8_t	len
	)

Variable Documentation

volatile uint8_t actbit

volatile uint8_t bitp

volatile uint8_t bytep

volatile uint8_t cbuf

volatile mode_t mode

ow_addr_t ow_addr

volatile wmode_t wmode

volatile xmode_t xmode