In that same code, i am not getting understood ,what is the preset temperature value,over which if it goes ,the gsm needs to send the message.
lm35 is used whose range is -55deg to 150deg and is linear with temp in degree celsius..its sensitivity is .01v/deg
int main (void)
{
.
.
.
while(1)
{
x=process_adc();//Read ADC value and display it on first line of LCD
wait(30);
if(x>300)
{
string=”AT+CMGS=”;
while(*string != ‘ ’)
{
while(!(U1LSR & 0x20));
U1THR=*string;
string++;
wait(3);
}
.
.
.
and so..
so does this “if(x>300)” indicates the threshold value as 300deg? as the “process_adc()” gives us the adc value ??but lm35 can measure upto 150deg. so can i just change it to the temp within its range?