an ultrasonic sensor used as a car sensor
Dependencies: N5110 PowerControl beep mbed sensor
main.cpp
- Committer:
- sjaffal3
- Date:
- 2015-05-11
- Revision:
- 2:9328053b2ba7
- Parent:
- 1:475a5b7258fa
File content as of revision 2:9328053b2ba7:
/** @file main.cpp @brief Program implementation */ #include "main.h" int main() { PHY_PowerDown(); /// the Ethernet cable is powered down lcd.init(); /// the LCD display is initialised when switch is on welcomeMessage(); /// the welcome message will appear button.rise(&buttonPressed); /// event generated on rising edge while (1) { mypotVal = mypot; ///sets a variable to change as the pot is changing lcd.setBrightness(mypotVal); ///sets the brightness to the pot value compDist(); ///compares the distance to set it in a specific range } } void buttonPressed() { wait(0.2); if (i>1) ///when button is pressed it will check if i >1 { i=0; /// if it is it will set it to 0 } else { i++; /// if not it will increment i by one } } ///Print welcome message void welcomeMessage() { lcd.printString("University of ",5,0); lcd.printString("Leeds",27,1); lcd.refresh(); lcd.drawRect(59,36,5,11,0);///bottom left rectangle is set lcd.drawRect(72,36,5,11,0);///bottom right rectangle is set lcd.drawRect(64,34,8,13,0);///bottom middle rectangle is set lcd.drawRect(60,33,16,3,0); /// is set over the bottom rectangles lcd.drawCircle(68,40,2,0); /// circle is set on bottom middle box lcd.drawRect(61,26,14,7,0);///big middle box is set over everything lcd.drawRect(63,27,10,0.5,1);///top black rectangle is set lcd.drawRect(64.5,28,1,0.5,1);///left middle black rect is set lcd.drawRect(67.5,28,1,0.5,1);///middle black rect is set lcd.drawRect(70,28,1,0.5,1);///right middle black rect is set lcd.drawRect(64.5,28,0.5,3.5,1);///left bottom black rect is set lcd.drawRect(67.5,28,0.5,3.5,1);///middle bottom black rect is set lcd.drawRect(70,28,0.5,3.5,1);///right bottom black rect is set lcd.drawRect(62,21,12,5,0);///rectangle is set over big middle box lcd.drawRect(66,22,0.5,0.5,1);///left top black rect is set lcd.drawRect(68,22,0.5,0.5,1);///top black rect is set lcd.drawRect(70,22,0.5,0.5,1);///right top black rect is set lcd.drawRect(66,22,0.5,2,1);///left bottom black rect is set lcd.drawRect(68,22,0.5,2,1);///middle bottom black rect is set lcd.drawRect(70,22,0.5,2,1);///right bottom black rect is set lcd.drawRect(64,17,8,4,0);///rectangle under triangle is set lcd.drawLine(64,17,68,13.5,1);///left line to complete triangle lcd.drawLine(72,17,68,13.5,1);///right line to complete triangle lcd.clearPixel(65, 36); ///clears intersecting lines from rectangle lcd.clearPixel(66, 36); lcd.clearPixel(67, 36); lcd.clearPixel(68, 36); lcd.clearPixel(69, 36); lcd.clearPixel(70, 36); lcd.clearPixel(71, 36); lcd.refresh(); wait(3.0); lcd.clear(); lcd.printString("Saleh Jaffal",8,2); lcd.printString("200911007",15,3); lcd.refresh(); lcd.drawRect(6,12,73,21,0); lcd.drawRect(4,10,77,25,0); lcd.refresh(); getDistanceCm(); ///gets the distance after the message getDistanceIn(); getDistanceUs(); } void getDistanceCm() { distance1 = sensor.getDistanceCm(); ///adds up 10 distances read by the sensor distance2 = sensor.getDistanceCm(); ///there is a 70 ms delay between each reading distance3 = sensor.getDistanceCm(); distance4 = sensor.getDistanceCm(); distance5 = sensor.getDistanceCm(); distance6 = sensor.getDistanceCm(); distance7 = sensor.getDistanceCm(); distance8 = sensor.getDistanceCm(); distance9 = sensor.getDistanceCm(); distance10 = sensor.getDistanceCm(); sum = distance1+distance2+distance3+distance4+distance5+distance6+distance7+distance8+distance9+distance10; ///all of them are added to the sum distanceCm = sum/10; ///the sum is divided by 10 to get the average } void getDistanceIn() { distance1 = sensor.getDistanceIn(); ///adds up 10 distances read by the sensor distance2 = sensor.getDistanceIn(); ///there is a 70 ms delay between each reading distance3 = sensor.getDistanceIn(); distance4 = sensor.getDistanceIn(); distance5 = sensor.getDistanceIn(); distance6 = sensor.getDistanceIn(); distance7 = sensor.getDistanceIn(); distance8 = sensor.getDistanceIn(); distance9 = sensor.getDistanceIn(); distance10 = sensor.getDistanceIn(); sum = distance1+distance2+distance3+distance4+distance5+distance6+distance7+distance8+distance9+distance10; ///all of them are added to the sum distanceIn = sum/10; ///the sum is divided by 10 to get the average } void getDistanceUs() { distance1 = sensor.getDistanceUs(); ///adds up 10 distances read by the sensor distance2 = sensor.getDistanceUs(); ///there is a 70 ms delay between each reading distance3 = sensor.getDistanceUs(); distance4 = sensor.getDistanceUs(); distance5 = sensor.getDistanceUs(); distance6 = sensor.getDistanceUs(); distance7 = sensor.getDistanceUs(); distance8 = sensor.getDistanceUs(); distance9 = sensor.getDistanceUs(); distance10 = sensor.getDistanceUs(); sum = distance1+distance2+distance3+distance4+distance5+distance6+distance7+distance8+distance9+distance10; ///all of them are added to the sum distanceUs = sum/10; ///the sum is divided by 10 to get the average } void compDist() ///used to compare the distances { switch (i) { case 0: { getDistanceCm(); ///calls this action to show the reading char buffer[14]; /// each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) int length = sprintf(buffer," %d cm",distanceCm); /// print formatted data to buffer if(length<=14); /// if string will fit on display lcd.clear(); /// clears LCD lcd.drawRect(6,12,73,21,0);///sets 2 rectangles lcd.drawRect(4,10,77,25,0); lcd.printString("Distance =",8,2);///prints distance and the reading below it lcd.printString(buffer,8,3); lcd.refresh(); ///refreshes LCD screen ///compares distances and sets them in their specified range if (distanceCm >= 100) { A=0; ///sets case distanceA(); } else if (distanceCm >= 80 && distanceCm <= 99) { A=1; ///sets case distanceA(); } else if (distanceCm >= 60 && distanceCm <= 79) { A=2; ///sets case distanceA(); } else if (distanceCm >= 40 && distanceCm <= 59) { A=3; ///sets case distanceA(); } else if (distanceCm >= 20 && distanceCm <=39 ) { A=4; ///sets case distanceA(); } else { A=5; ///sets case distanceA(); } } break; case (1): { getDistanceIn(); ///calls this action to show the reading char buffer[14]; /// each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) int length = sprintf(buffer," %d in",distanceIn); /// print formatted data to buffer if(length<=14); /// if string will fit on display lcd.clear(); /// clears LCD lcd.drawRect(6,12,73,21,0);/// sets 2 rectangles lcd.drawRect(4,10,77,25,0); lcd.printString("Distance =",8,2);/// prints distance and the reading below it lcd.printString(buffer,8,3); lcd.refresh(); /// refreshes LCD screen ///compares distances and sets them in their specified range if (distanceIn >= 40) { A=0; ///sets case distanceA(); } else if (distanceIn >= 32 && distanceIn <= 39) { A=1; ///sets case distanceA(); } else if (distanceIn >= 24 && distanceIn <= 31) { A=2; ///sets case distanceA(); } else if (distanceIn >= 16 && distanceIn <= 23) { A=3; ///sets case distanceA(); } else if (distanceIn >= 8 && distanceIn <=15 ) { A=4; ///sets case distanceA(); } else { A=5; ///sets case distanceA(); } } break; case(2): { getDistanceUs(); ///calls this action to show the reading char buffer[14]; /// each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) int length = sprintf(buffer," %d us",distanceUs); /// print formatted data to buffer if(length<=14); /// if string will fit on display lcd.clear(); /// clears LCD lcd.drawRect(6,12,73,21,0);/// sets 2 rectangles lcd.drawRect(4,10,77,25,0); lcd.printString("Distance =",8,2);/// prints distance and the reading below it lcd.printString(buffer,8,3); lcd.refresh(); /// refreshes LCD screen ///compares distances and sets them in their specified range if (distanceUs >= 5900) { A=0; ///sets case distanceA(); } else if (distanceUs >= 4680 && distanceUs <= 5899) { A=1;///sets case distanceA(); } else if (distanceUs >= 3400 && distanceUs <= 4679) { A=2;///sets case distanceA(); } else if (distanceUs >= 2430 && distanceUs <= 3339) { A=3;///sets case distanceA(); } else if (distanceUs >= 1220 && distanceUs <=2429 ) { A=4;///sets case distanceA(); } else { A=5;///sets case distanceA(); } } break; } } void distanceA() //sets leds and buzzer for each case { switch (A){ case(0): { //case 0 would have 1 LED on green1=1; green2=0; yellow1=0; yellow2=0; red1=0; red2=0; lcd.printString("Out of range",0,0); buzzer.beep(2000, 0.1); ///@see This code was from a library I found } break; case(1): { ///case 1 would have 2 LED's on green1=1; green2=1; yellow1=0; yellow2=0; red1=0; red2=0; lcd.printString("In range",0,0); buzzer.beep(2000, 0.1); ///@see This code was from a library I found } break; case(2): { //green1=1; ///case 2 would have 3 LED's on green2=1; yellow1=1; yellow2=0; red1=0; red2=0; lcd.printString("Take Care!",0,0); buzzer.beep(2000, 0.2); } break; case(3): { green1=1; ///case 3 would have 4 LED's on green2=1; yellow1=1; yellow2=1; red1=0; red2=0; lcd.printString("Closer!",0,0); buzzer.beep(2000, 0.2); ///@see This code was from a library I found } break; case(4): { green1=1; ///case 4 would have 5 LED's on green2=1; yellow1=1; yellow2=1; red1=1; red2=0; lcd.printString("VERY CLOSE!",0,0); buzzer.beep(2000, 0.4); ///@see This code was from a library I found } break; case(5): { green1=1; ///case 5 would have 6 LED's on green2=1; yellow1=1; yellow2=1; red1=1; red2=1; lcd.printString("WATCH OUT!",0,0); buzzer.beep(2000, 1.2); ///@see This code was from a library I found } break; }}