This is the development sandbox for the DRV425EVM and its magnetic sensing.
Dependencies: mbed
Repository for the 2015 OhmBoyZ Capstone group.
Diff: main.cpp
- Revision:
- 5:760f85b3f309
- Parent:
- 4:769396add1a8
- Child:
- 6:2f0942f33585
- Child:
- 7:405e3ff6cbcd
--- a/main.cpp Tue Nov 24 22:47:49 2015 +0000 +++ b/main.cpp Wed Nov 25 02:28:53 2015 +0000 @@ -13,10 +13,12 @@ meas = analog_value.read(); // Converts and read the analog input value (value from 0.0 to 1.0) meas = meas * 3300; // Change the value to be in the 0 to 3300 range (currently to mV) printf("meas = %fmV\n\r",meas); // Print out raw measurement in terms of mV - //b=(meas/1000)/(4.0*12.2*100.0); // Based on equation 1 + b=((meas/1000)/(4.0*12.2*100.0))-3.3/2.0; // Based on equation 1 + //VVOUT [V] = B × G × RSHUNT × GAMP = B [mT] × 12.2 mA/mT × RSHUNT [Ω] × 4 [V/V] + //0 Tesla is VDD/2 // 12.2 mA/mT - //printf("b = %f Gauss\n\r",b); // Print out b field measure in milliTesla - //printf("B = %fuT\n\r", b*1000.0); // Output B field in micro-Tesla + printf("b = %f Gauss\n\r",b); // Print out b field measure in milliTesla + printf("B = %fuT\n\r", b*1000.0); // Output B field in micro-Tesla if (meas > 2000) { // If the value is greater than 2V then switch the LED on // greater than 410 microGauss [40 mT] led = 1;