bool DS1307Write(uint8_t address,uint8_t data)
{
uint8_t res; //result
//Start
SoftI2CStart();
//SLA+W
res=SoftI2CWriteByte(DS1307_SLA_W); //DS1307 address + W
//Error
if(!res) return false;
//Now send the address of required register
res=SoftI2CWriteByte(address);
//Error
if(!res) return false;
//Now write the value
res=SoftI2CWriteByte(data);
//Error
if(!res) return false;
//STOP
SoftI2CStop();
return true;
}
void LM75_set_conf(uint8_t addr, uint8_t data) {
SoftI2CStart();
while(1) {
if(!SoftI2CWriteByte(LM75_I2C_ADDR_MASK(addr))) break; //break if LM75 not ACK
SoftI2CWriteByte(LM75_CONF_MASK(data));
}
SoftI2CStop();
}
void LM75_set_pointer(uint8_t addr, uint8_t ptr) {
SoftI2CStart();
while(1) {
if(!SoftI2CWriteByte(LM75_I2C_ADDR_MASK(addr))) break; //break if LM75 not ACK
SoftI2CWriteByte(LM75_POINTER_MASK(ptr)); //set pointer
break;
}
SoftI2CStop();
}
int16_t LM75_TempRead(uint8_t addr) {
int16_t temp=0;
SoftI2CStart();
while(1) {
if(!SoftI2CWriteByte(LM75_I2C_ADDR_MASK(addr) | LM75_I2C_READ)) break; //break if LM75 not ACK
temp = (SoftI2CReadByte(1)<<8); //Read high byte
temp |= (SoftI2CReadByte(0) & 0xE0); // Read low byte. Mask? maybe 0x80
break;
}
SoftI2CStop();
return temp;
}
bool DS1307Read(uint8_t address,uint8_t *data)
{
uint8_t res; //result
//Start
SoftI2CStart();
//SLA+W (for dummy write to set register pointer)
res=SoftI2CWriteByte(0xD0); //DS1307 address + W
//Error
if(!res) return false;
//Now send the address of required register
res=SoftI2CWriteByte(address);
//Error
if(!res) return false;
//Repeat Start
SoftI2CStart();
//SLA + R
res=SoftI2CWriteByte(DS1307_SLA_R); //DS1307 Address + R
//Error
if(!res) return false;
//Now read the value with NACK
*data=SoftI2CReadByte(0);
//Error
if(!res) return false;
//STOP
SoftI2CStop();
return true;
}
