main.cpp

00001 #include "mbed.h"
00002 #include "TextLCD.h"
00003 
00004 TextLCD lcd(PC_11,PC_10,PC_0,PC_3,PC_1,PC_2); // RS, E, D4-D7
00005 Serial pc(USBTX,USBRX,115200);
00006 AnalogIn analog_value(PA_0);
00007 AnalogIn analog_value2(PA_1);
00008 Timer t;
00009 
00010 int main() {
00011     pc.format(8,SerialBase::None,1);
00012     double meas, meas2, sum, sum2,count =0, range, range2, highscore = 0;
00013     bool lock = false;
00014     lcd.cls();
00015     lcd.printf("Welcome to Speed Testing!");
00016     
00017     while(1) {
00018         t.reset();
00019         meas = analog_value.read() * 3300;  // Converts and read the analog input value (value from 0.0 to 1.0)
00020                                             // Change the value to be in the 0 to 3300 range
00021         meas2 = analog_value2.read() * 3300;
00022         
00023         count++;
00024         sum+=meas;
00025         range=sum/count;
00026         sum2+=meas2;
00027         range2=sum2/count;
00028         
00029         if(range > meas)
00030             range -= 100.0;
00031         if(range2 > meas2)
00032             range2 -= 100.0;
00033         
00034         while(analog_value.read() * 3300 < range && analog_value2.read() * 3300 < range2);
00035         if (meas < range && meas2 > range2 && !lock) { // If the value is greater than 2V then switch the LED on
00036             lock = true;
00037             t.start();
00038             while(analog_value2.read() * 3300 > range2);
00039             t.stop();
00040             lcd.cls();
00041             double time = t.read();
00042             double speed = 7 / time;
00043             /*
00044             if(speed > highscore){
00045                 highscore = speed;
00046                 lcd.printf("!!!New record!!!");
00047                 
00048             }*/
00049             pc.printf("%f s\n", time);
00050             pc.printf("%f cm/s\n", speed);
00051             
00052         pc.printf("measure1 = %.0f mV, range1 = %.0f mV\n", meas, range);
00053         pc.printf("measure2 = %.0f mV, range2 = %.0f mV\n", meas2, range2);
00054         
00055             lcd.locate(0,0);
00056             lcd.printf("%f s", time);
00057             lcd.locate(0,1);
00058             lcd.printf("%f cm/s", speed);
00059             lock = false;
00060         }
00061     }
00062 }
00063 
00064 void animation(){
00065     lcd.locate(0,1);
00066     lcd.printf("!*!*!*!*!*!*!*!*");
00067     wait(0.5);
00068     lcd.locate(0,1);
00069     lcd.printf("~!~!~!~!~!~!~!~!");
00070     wait(0.5);
00071     lcd.locate(0,1);
00072     lcd.printf("!~!~!~!~!~!~!~!~");
00073     wait(0.5);
00074     lcd.locate(0,1);
00075     lcd.printf("~!~!~!~!~!~!~!~!");
00076     wait(0.5);
00077     lcd.locate(0,1);
00078     lcd.printf("!~!~!~!~!~!~!~!~");
00079     wait(0.5);
00080     lcd.locate(0,1);
00081     lcd.printf("~!~!~!~!~!~!~!~!");
00082     wait(0.5);
00083     lcd.locate(0,1);
00084     lcd.printf("!~!~!~!~!~!~!~!~");
00085     wait(0.5);
00086     lcd.locate(0,1);
00087     lcd.printf("~!~!~!~!~!~!~!~!");
00088     lcd.cls();
00089 }