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:
- 7:405e3ff6cbcd
- Parent:
- 5:760f85b3f309
- Child:
- 8:b127541c9149
--- a/main.cpp Wed Nov 25 02:28:53 2015 +0000 +++ b/main.cpp Sat Nov 28 20:55:25 2015 +0000 @@ -13,12 +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))-3.3/2.0; // Based on equation 1 + b=((meas-1.65)/(4.0*12.2*100.0)); // 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 = %f uT\n\r", b*100.0); // 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; @@ -26,6 +26,6 @@ else { led = 0; } - wait(.1); // wait 1 second + wait(1.5); // wait 1 second } }