ds18b20.h File Reference

    Driver for the DS18B20 temperature sensor.

More...

#include "onewire.h"

Go to the source code of this file.

Functions
void	ds18b20_init (void)
	Initialize the DS18B20 driver. More...
void	ds18b20_convert_temperature (const ow_rom_code_t id)
	Tell a DS18B20 sensor to initiate a temperature conversion. More...
uint8_t	ds18b20_read_scratchpad (const ow_rom_code_t id, uint8_t *dest)
	Read the scratchpad of a DS18B20 sensor. More...

Detailed Description

    Driver for the DS18B20 temperature sensor.

Author

Joakim Gebart joaki.nosp@m.m.ge.nosp@m.bart@.nosp@m.eist.nosp@m.ec.se

Definition in file ds18b20.h.

Function Documentation

void ds18b20_convert_temperature

(

const ow_rom_code_t

id

)

Tell a DS18B20 sensor to initiate a temperature conversion.

Parameters

id	The ROM code of the sensor, 0 for SKIP ROM.

Note

Parasite power is not supported yet!

Definition at line 64 of file ds18b20.c.

References ow_skip_or_match_rom(), and ow_write_bytes().

void ds18b20_init

(

void

)

Initialize the DS18B20 driver.

Not much to do here yet.

Definition at line 53 of file ds18b20.c.

uint8_t ds18b20_read_scratchpad	(	const ow_rom_code_t	id,
		uint8_t *	dest
	)

Read the scratchpad of a DS18B20 sensor.

Parameters

id	The ROM code of the sensor, 0 for SKIP ROM.
dest	A destination buffer, must be at least 9 bytes long.

Returns

0 if the CRC is correct, non-zero otherwise.

Definition at line 85 of file ds18b20.c.

References ow_compute_crc(), ow_read_bytes(), ow_skip_or_match_rom(), and ow_write_bytes().