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Dependencies:   4DGL-uLCD-SE EthernetInterface NTPClient SDFileSystem mbed-rtos mbed wave_player

Fork of 2036lab7_template by jim hamblen

TMP36.h@1:a5f43fb83aca, 2018-10-25 (annotated)

Committer:
baaosen
Date:
Thu Oct 25 14:46:07 2018 +0000
Revision:
1:a5f43fb83aca
Parent:
0:df4d7c0a1594 
ECE 2036 project

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 0:df4d7c0a1594 1 #include "mbed.h"
4180_1 0:df4d7c0a1594 2
4180_1 0:df4d7c0a1594 3 //Setup a new class for TMP36 sensor
4180_1 0:df4d7c0a1594 4 class TMP36
4180_1 0:df4d7c0a1594 5 {
4180_1 0:df4d7c0a1594 6 public:
4180_1 0:df4d7c0a1594 7 TMP36(PinName pin);
4180_1 0:df4d7c0a1594 8 TMP36();
4180_1 0:df4d7c0a1594 9 operator float ();
4180_1 0:df4d7c0a1594 10 float read();
4180_1 0:df4d7c0a1594 11 private:
4180_1 0:df4d7c0a1594 12 //class sets up the AnalogIn pin
4180_1 0:df4d7c0a1594 13 AnalogIn _pin;
4180_1 0:df4d7c0a1594 14 };
4180_1 0:df4d7c0a1594 15
4180_1 0:df4d7c0a1594 16 TMP36::TMP36(PinName pin) : _pin(pin)
4180_1 0:df4d7c0a1594 17 {
4180_1 0:df4d7c0a1594 18 // _pin(pin) means pass pin to the AnalogIn constructor
4180_1 0:df4d7c0a1594 19 }
4180_1 0:df4d7c0a1594 20
4180_1 0:df4d7c0a1594 21 float TMP36::read()
4180_1 0:df4d7c0a1594 22 {
4180_1 0:df4d7c0a1594 23 //convert sensor reading to temperature in degrees C
4180_1 0:df4d7c0a1594 24 return ((_pin.read()*3.3)-0.500)*100.0;
4180_1 0:df4d7c0a1594 25 }
4180_1 0:df4d7c0a1594 26 //overload of float conversion (avoids needing to type .read() in equations)
4180_1 0:df4d7c0a1594 27 TMP36::operator float ()
4180_1 0:df4d7c0a1594 28 {
4180_1 0:df4d7c0a1594 29 //convert sensor reading to temperature in degrees C
4180_1 0:df4d7c0a1594 30 return ((_pin.read()*3.3)-0.500)*100.0;
4180_1 0:df4d7c0a1594 31 }