TMP05ART-REEL Ver la hoja de datos (PDF) - Analog Devices

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TMP05ART-REEL

±0.5°C Accurate PWM Temperature Sensor in 5-Lead SC-70

Analog Devices 

TMP05/TMP06

}

void main(void)

{

double temp1=0,temp2=0;

double T1,T2,T3,T4,T5;

// Initialization

TMOD = 0x19;

// Timer1 in 16-bit counter mode

// Timer0 in 16-bit counter mode

// with gate on INT0. Timer0 only counts when INTO pin // is high.

ET0 = 1;

// Enable timer0 interrupts

ET1 = 1;

// Enable timer1 interrupts

tempsegment = 1;

// Initialize segment

Daisy_Start_Pulse = 0;

// Pull P3.7 low

// Start Pulse

Daisy_Start_Pulse = 1;

Daisy_Start_Pulse = 0;

// Set T0 to count the high period

TR0 = 1;

IT0 = 1;

//Toggle P3.7 to give start pulse

// Start timer0 running

// Interrupt0 edge triggered

EX0 = 1;

EA = 1;

for(;;)

{

if (tempsegment == 4)

break;

}

// Enable interrupt

// Enable global interrupts

//CONFIGURE UART

SCON = 0x52 ;

TMOD = 0x20 ;

TH1 = 0xFD ;

TR1 = 1;

// 8-bit, no parity, 1 stop bit

// Configure timer1..

// ..for 9600baud..

// ..(assuming 11.0592MHz crystal)

//Convert variables to floats for calculation

T1= temp_high0;

T2= temp_low0;

T3= temp_high1;

T4= temp_low1;

T5= temp_high2;

temp1=421-(751*(T1/(T2-T3)));

temp2=421-(751*(T3/(T4-T5)));

printf("Temp1 = %f\nTemp2 = %f\n",temp1,temp2);

//Sends temperature result out UART

while (1);

// END of program

}

// Delay routine

void delay(int length)

{

while (length >=0)

length--;

}

Rev. 0 | Page 22 of 28

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