lm75.c

基于Freescale Codewarrior6.2环境下的针对qe8 单片机的LM75A温度传感器的驱动程序,可以直接使用

#include "LM75.h"

void LM_Init()
{
	I2C1_Init();	
}

void LM_SelectReg(unsigned char reg)
{
	I2C1_SendChar(reg);	//选择寄存器		
}

unsigned char LM_ReadReg(unsigned char reg, unsigned char* buf, unsigned char len)
{
	uint16_t l;
	LM_SelectReg(reg);	//选择寄存器
	return I2C1_RecvBlock(buf, len, &l);
}

unsigned char LM_WriteReg(unsigned char reg, unsigned char* buf, unsigned char len)
{
	//LM_SelectReg(reg);	//选择寄存器
	uint8_t c[16];
	uint8_t i;
	uint16_t l;
	c[0] = reg;
	for (i = 0; i < len; i++)
		c[i+1] = buf[i];
	return I2C1_SendBlock(c, len + 1, &l);
}

void LM_Sleep()
{
	uint8_t t;
	t = 1;
	LM_WriteReg(LM_R_CONFIG, &t, 3);
	//I2C1_Disable();
}

void LM_Wakeup()
{
	uint8_t t;
	//I2C1_Enable();
	t = 0;
	LM_WriteReg(LM_R_CONFIG, &t, 1);
}