Diff: main.cpp

Revision:

72:aa14c091f860

Parent:

71:7d17edde2e03

Child:

73:d47320bcc568

--- a/main.cpp	Fri Aug 03 06:46:00 2018 +0000
+++ b/main.cpp	Mon Aug 06 09:28:20 2018 +0000
@@ -1,5 +1,6 @@
 #include "mbed.h"
 #include "Grove_LCD_RGB_Backlight.h"
+#include "Grove_temperature.h"
 
 #define D20 (PB_4)
 #define D19 (PB_3)
@@ -9,25 +10,10 @@
 AnalogIn ain(A6);
 InterruptIn btn(D20);
 Grove_LCD_RGB_Backlight rgbLCD(I2C_SDA, I2C_SCL);
+Grove_temperature temp(A4);
 
 uint32_t button = 0;
 
-///
-
-float get_temp()
-{
-    const int B = 4275;               // B value of the thermistor
-    const int R0 = 100000;            // R0 = 100k
-    AnalogIn temp(A4);
-
-    float R = 1.0f/temp.read() - 1.0f;
-    R = R0*R;
-
-    float temperature = 1.0/(log(R/R0)/B+1/298.15)-273.15; // convert to temperature via datasheet
-    return temperature;
-}
-///
-
 
 void push()
 {
@@ -49,9 +35,8 @@
     int cnt = 0;
     printf("hello, Mbed world\n");
     while (true) {
-        printf("count = %4d, button = %d, analog = %f, temp = %f\n", cnt++, button, ain.read(), get_temp());
+        printf("count = %4d, button = %d, analog = %f, temp = %f\n", cnt++, button, ain.read(), temp.getTemperature());
         led1 = !led1;
         wait(0.5);
     }
 }
-