Diff: main.cpp

Revision:

25:611277904537

Parent:

24:7f14b70fc9ef

--- a/main.cpp	Mon Apr 08 11:03:25 2019 +0100
+++ b/main.cpp	Tue Jun 25 15:16:15 2019 +0000
@@ -1,12 +1,51 @@
 #include "mbed.h"
+#include "Hx711.h"
+
+
 
-DigitalOut myled(LED1);
+float   calibration_factor = -1.0f; // this calibration factor is adjusted according to my load cell
+int32_t units_raw;
+float   units;
+float   ounces;
+int     offset = 0;
+
+Hx711 scale(D4, D5);
+
+//void delay(int delay){
+//    for(int i=0; i<delay;i++)    
+//}
 
 int main() {
+      printf("HX711 calibration sketch\n");
+      printf("Remove all weight from scale\n");
+      printf("After readings begin, place known weight on scale\n");
+      printf("Press + or a to increase calibration factor\n");
+      printf("Press - or z to decrease calibration factor\n");
+      
+      offset = (int)scale.read();
+      scale.set_offset(offset);
+      printf("Reading: %d \n",offset);
+      scale.set_scale(calibration_factor);   
     while(1) {
-        myled = 1;
-        wait(0.2);
-        myled = 0;
-        wait(0.2);
+      wait_ms(1000);
+
+      units_raw = scale.readRaw();
+      units = scale.read();
+      if (units < 0)
+      {
+        units = 0.00;
+      }
+//      ounces = units * 0.035274f;
+      printf("Raw reading: %d grams. \n",units_raw);
+      printf("Actual reading: %f grams. \n",units);
+//      printf("Calibration_factor: %f\n",calibration_factor);
+      wait_ms(10000);
     }
 }
+
+
+
+
+
+
+ 
\ No newline at end of file