Revision 2:010f6e9e7174, committed 2017-03-03

Comitter:

moshi

Date:

Fri Mar 03 01:53:33 2017 +0000

Parent:

1:7931088c5e05

Commit message:

Test program;

Changed in this revision

diff -r 7931088c5e05 -r 010f6e9e7174 MaxSonar_EZ1_Analog.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MaxSonar_EZ1_Analog.lib	Fri Mar 03 01:53:33 2017 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/hasimo/code/MaxSonar_EZ1_Analog/#7931088c5e05

diff -r 7931088c5e05 -r 010f6e9e7174 main.cpp
--- a/main.cpp	Wed Jul 23 10:33:12 2014 +0000
+++ b/main.cpp	Fri Mar 03 01:53:33 2017 +0000
@@ -11,18 +11,46 @@
 TextLCD lcd(p24, p26, p27, p28, p29, p30); // rs, e, d4-d7
 AnalogIn ain(p15);
 
+LocalFileSystem local("local");               // Create the local filesystem under the name "local"
+
 int main() {
-    float adc, volts, inches, cm;
+    float adc, volts, grams;
+    DigitalIn writebutton(p17);
+    DigitalIn closebutton(p18);
+
+    FILE *fp = fopen("/local/out.txt", "w");  // Open "out.txt" on the local file system for writing
+    
+    int writeenable = 0;
+    int closefile = 0;
+    
+    writebutton.mode(PullUp);
+    closebutton.mode(PullUp);
     
     while (1){
+        writeenable = writebutton.read();
+        closefile = closebutton.read();
+        
         lcd.locate(0,0);
         adc = ain.read();           // read analog as a float
         volts = adc * 3.3;          // convert to volts
-        inches = volts / (3.3 / 512.0);    // 3.3V supply: 6.4mV per inch
-        cm = inches * 2.54;    // inch to cm
-        lcd.printf("%8.3f cm\n", cm);
 
-        wait(0.05);                 // 20Hz update rate
+        lcd.printf("%8.3f volts\n", volts);
+        
+        if(closefile == 0){
+            fclose(fp);
+            break;  
+        }
+        
+        if(writeenable == 0){
+            lcd.cls();
+            lcd.printf("Recording Voltage...\n\n");
+            fprintf(fp, "%8.3f volts\n", volts);
+            lcd.printf("Done!\n\n");
+            wait(0.5);
+            lcd.cls();
+        }
+        
+        wait(0.05);                 // 20Hz update rate (once per 0.05 seconds)
     }
 }