Diff: main.cpp

Revision:

0:2d84c250f000

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Feb 28 03:36:09 2019 +0000
@@ -0,0 +1,49 @@
+#include "mbed.h"
+#include "HX711.h"
+ 
+DigitalOut gpo(D0);
+//DigitalOut led(LED_BLUE);
+DigitalOut led(LED1);
+
+HX711 scale(p6,p7);
+ 
+AnalogIn scaleRaw(A3);
+Serial pc(USBTX, USBRX);    // USB Serial Terminal
+float calibration_factor = 1.000; //-7050 worked for my 440lb max scale setup
+int averageSamples = 100;
+
+LocalFileSystem local("local");               // Create the local filesystem under the name "local"
+
+int i; 
+ 
+int main(void)
+{
+  //  pc.printf("Starting Scale");
+  //  pc.printf("HX711 calibration sketch");
+  //  pc.printf("Remove all weight from scale");
+  //  pc.printf("After readings begin, place known weight on scale");
+  //  pc.printf("Press + or a to increase calibration factor");
+  //  pc.printf("Press - or z to decrease calibration factor");
+    
+      
+    scale.setScale(0);
+    scale.tare(); //Reset the scale to 0
+    
+    long zero_factor = scale.averageValue(averageSamples); //Get a baseline reading
+  //  pc.printf("Zero factor: %.4f\n" , zero_factor); //This can be used to remove the need to tare the scale. Useful in permanent scale projects.
+    
+    //while (true) {
+        scale.setScale(calibration_factor); //Adjust to this calibration factor
+        float weight = scale.getGram();
+       // pc.printf(" %5.3e\n", weight);
+
+    FILE *fp = fopen("/local/out.txt", "w");  // Open "out.txt" on the local file system for writing
+    fprintf(fp, " %5.3e\n", weight);
+    fclose(fp);
+ 
+ 
+        gpo = !gpo; // toggle pin
+        led = !led; // toggle led
+        wait(0.2f);
+   // }
+}
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