tmp100.c

来自「多点温度检测系统」· C语言 代码 · 共 54 行

#include <reg52.H>
#include "tmp100.h"
#include "i2c.h"

void Tmp100Init(void)
{
	I2CStop();
	do
	{
		I2CStart();
		I2CSendByte(0x90);
	 }while(!I2CWaitAck());
	 
	 do
	{
		I2CSendByte(0x01);
	 }while(!I2CWaitAck());
	 
 	 do
	{
		I2CSendByte(0x78);
 	}while(!I2CWaitAck());
	I2CStop();
}
unsigned int Tmp100Get(void)
{
	unsigned int ddata;
	
	do
	{
		I2CStart();
		I2CSendByte(0x90);
	 }while(!I2CWaitAck());
	 
	do
	{
		I2CSendByte(0x00);
	 }while(!I2CWaitAck());
	 
	do
	{
		I2CStart();
		I2CSendByte(0x91);
	 }while(!I2CWaitAck());
	 
	ddata = I2CReceiveByte();
	I2CSendAck();
	ddata <<= 8;
	ddata |= I2CReceiveByte();
	I2CSendNotAck();
	I2CStop();
	
	return ddata;
}