////Atmel AVR Design Contest 2006 Registration Number AT3221////----------------------------------------------------------------------------------//// Sensirion SHT1x Humidity Sensor Library////----------------------------------------------------------------------------------#ifndef __sht_h#define __sht_h#define XTAL 				3686400		// Processor clock#define SHT_TEMPERATURE 	0x03	// Measure temp - for ShtMeasure#define SHT_HUMIDITY 		0x05		// Measure humidity - for ShtMeasure#define SHT_DDR				DDRE		// Port with clock and data pins#define SHT_PORT			PORTE		// Port with clock and data pins#define SHT_PIN				PINE		// Port with clock and data pins#define SHT_CLOCK			4			// Pin used to output clock to SHT#define SHT_DATA			5			// Pin used to read/output data from/to SHT#define SHT_PWR 			6			// Pin used to power sensor (for powersave modes)#define SHT_DELAY			25			// uS delay between clock rise/fall#define STATUS_REG_W 		0x06 		// Command to read status register#define STATUS_REG_R 		0x07 		// Command to write status register#define RESET 				0x1e 		// Command for soft reset (not currently used)//#define DELAY(us)			(Delay_us(((us*(XTAL/1000000))-16)/6))#define DELAY(us)			(Delay_us((us)))#define CYCLES_PER_US 		((XTAL+500000)/1000000) 	/* cpu cycles per microsecond *//*// ( GNU compatability Macros )#define _BV(bit)			(1 << (bit))#ifndef sbi	#define sbi(x,bit)			(x |= _BV(bit)) // set bit  ( GNU compatability )	#define cbi(x,bit)			(x &= ~_BV(bit)) // clear bit  ( GNU compatability )#endif#ifndef bit_is_set	#define bit_is_set(sfr, bit) (sfr & _BV(bit))	#define bit_is_clear(sfr, bit) (!(sfr & _BV(bit)))#endif*/void ShtInit(void);void ShtReset(void);int  ShtMeasure(unsigned char mode);//void ShtCalculate(int *p_temperature, int *p_humidity);char ShtReadStatus(unsigned char *p_value);char ShtWriteStatus(unsigned char value);void Delay_us(unsigned long us);#endif