CLUE
Prototype
Dependencies: mbed
Revision 0:818d3faeb71f, committed 2017-02-13
- Comitter:
- keithbehrman
- Date:
- Mon Feb 13 20:53:18 2017 +0000
- Commit message:
- First prototype
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Feb 13 20:53:18 2017 +0000
@@ -0,0 +1,35 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+AnalogIn ain(PB_0);
+Serial pc(USBTX, USBRX); // tx, rx
+
+double resistinput;
+double bridgeR1=218.14;
+double bridgeR2=218.96;
+double bridgeR3=218.46;
+double gainR12=20000;
+double gainR34=46200;
+double bridgePotential;
+double sourceVoltage=5.0;
+double strainResist;
+double wheatstonePotential;
+double dynamicRangePotential;
+
+int main() {
+
+ dynamicRangePotential=sourceVoltage*(bridgeR3/(bridgeR3+bridgeR2));
+
+
+ while(1) {
+
+ resistinput=ain.read();
+ wheatstonePotential=sourceVoltage*resistinput*gainR12/gainR34;
+ bridgePotential=wheatstonePotential+dynamicRangePotential;
+ strainResist=-bridgeR1*bridgePotential/(bridgePotential-sourceVoltage);
+
+ pc.printf("Resistance= %f \n", strainResist);
+ wait(1);
+ }
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Feb 13 20:53:18 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/ad3be0349dc5 \ No newline at end of file