sht11.h File Reference

Header file for sht11.c. More...

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <math.h>
#include <stdio.h>
#include <compat/deprecated.h>

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Macros
#define	SCK_YLOS   SENSOR_PORT |= (1<<SENSOR_CLK)
#define	SCK_ALAS   SENSOR_PORT &= ~(1<<SENSOR_CLK)
#define	DATA_ALAS   SENSOR_PORT &=~( 1<<(anturi) ) /* PORTA Set bit to 0 */
#define	DATA_YLOS   SENSOR_PORT |= ( 1<<(anturi) ) /* PORTA Set bit to 1 */
#define	MAX_ANTURI   NRO_OF_SENSORS+1 /** @warning This is set to 5 because of the I/O reading (Bit 0 is SENSOR_CLK, must use bits 1...4). The true number of sensors is currently 4 */
#define	SENSOR_TIMER   0x96 /** Changed 17.3.2010, Previous value 0x9B */
#define	TIMER_DIVIDER   0x02 /** This value is used to set TIMER/Counter Prescaler to 8 */

Functions
void	wait (uint16_t time)
	Basic wait. More...
void	humiandtemp (void)
	Communicates with the SHT75 sensors. Retrieves the measurement values from sensors. More...

Detailed Description

Header file for sht11.c.

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Revision

160

Author

juma@.nosp@m.PUV..nosp@m.FI

Log

sht11.h,v

Revision 1.2 2009/08/07 08:50:01 juma

Revision 1.1 2009/08/06 07:43:00 e0700008

Macro Definition Documentation

#define DATA_ALAS   SENSOR_PORT &=~( 1<<(anturi) ) /* PORTA Set bit to 0 */

#define DATA_YLOS   SENSOR_PORT |= ( 1<<(anturi) ) /* PORTA Set bit to 1 */

#define MAX_ANTURI   NRO_OF_SENSORS+1 /** @warning This is set to 5 because of the I/O reading (Bit 0 is SENSOR_CLK, must use bits 1...4). The true number of sensors is currently 4 */

#define SCK_ALAS   SENSOR_PORT &= ~(1<<SENSOR_CLK)

#define SCK_YLOS   SENSOR_PORT |= (1<<SENSOR_CLK)

#define SENSOR_TIMER   0x96 /** Changed 17.3.2010, Previous value 0x9B */

#define TIMER_DIVIDER   0x02 /** This value is used to set TIMER/Counter Prescaler to 8 */

Function Documentation

void humiandtemp

(

void

)

Communicates with the SHT75 sensors. Retrieves the measurement values from sensors.

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Warning

Do not change TCNT0 Register value. If changed, sensors may not work.

Todo:

Why is this set to 0??

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void wait

(

uint16_t

time

)

Basic wait.

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Parameters

time	Time to wait in milliseconds.