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Dependencies:   MAX31855 mbed

Fork of max31855Sample by Joe Staton

Committer:
Stavlin
Date:
Mon Oct 22 09:42:16 2012 +0000
Revision:
0:c50a2801c243
Child:
1:6bed4f6f7b35
Sample program using the MAX31855 library. Prints of the temperature of one MAX31855 to console.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Stavlin 0:c50a2801c243 1 #include "mbed.h"
Stavlin 0:c50a2801c243 2 #include "max31855.h"
Stavlin 0:c50a2801c243 3
Stavlin 0:c50a2801c243 4 DigitalOut myled(LED1);
Stavlin 0:c50a2801c243 5
Stavlin 0:c50a2801c243 6 //----------------------------------------------------------
Stavlin 0:c50a2801c243 7 //SPI Interfaces
Stavlin 0:c50a2801c243 8 SPI testSPI(p11,p12,p13);
Stavlin 0:c50a2801c243 9 //----------------------------------------------------------
Stavlin 0:c50a2801c243 10
Stavlin 0:c50a2801c243 11 //----------------------------------------------------------
Stavlin 0:c50a2801c243 12 //Thermocouples
Stavlin 0:c50a2801c243 13 max31855 max1(testSPI,p21);
Stavlin 0:c50a2801c243 14 //----------------------------------------------------------
Stavlin 0:c50a2801c243 15
Stavlin 0:c50a2801c243 16 int main() {
Stavlin 0:c50a2801c243 17 //Initialise chip (starts internal timer)
Stavlin 0:c50a2801c243 18 max1.initialise();
Stavlin 0:c50a2801c243 19
Stavlin 0:c50a2801c243 20 //Float value to hold temperature returned
Stavlin 0:c50a2801c243 21 float fvalue = 0;
Stavlin 0:c50a2801c243 22
Stavlin 0:c50a2801c243 23 while(1) {
Stavlin 0:c50a2801c243 24 //Check if the chip is ready for a reading to be taken
Stavlin 0:c50a2801c243 25 if (max1.ready()==1){
Stavlin 0:c50a2801c243 26 //Get the reading
Stavlin 0:c50a2801c243 27 fvalue = max1.read_temp();
Stavlin 0:c50a2801c243 28
Stavlin 0:c50a2801c243 29 printf("Temperature is: %f\n\r", fvalue);
Stavlin 0:c50a2801c243 30 }
Stavlin 0:c50a2801c243 31
Stavlin 0:c50a2801c243 32 //Heartbeat signal (not necessary)
Stavlin 0:c50a2801c243 33 myled = !myled;
Stavlin 0:c50a2801c243 34
Stavlin 0:c50a2801c243 35 //Delay is not required, here simply for test program
Stavlin 0:c50a2801c243 36 wait(0.25);
Stavlin 0:c50a2801c243 37 }
Stavlin 0:c50a2801c243 38 }