Cotham School / Mbed 2 deprecated 3_Renbed_Buggy_Basics

First test programme for the RenBuggy

Dependencies:   SevenSegmentDisplay mbed

Fork of Renbed_Buggy_Basics by Renishaw

buggy_functions.cpp@3:152595d33544, 2016-04-21 (annotated)

Committer:
MiskinPrj
Date:
Thu Apr 21 14:42:35 2016 +0000
Revision:
3:152595d33544
Parent:
2:10c115fb71e2 
stop and hold at start of main

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MiskinPrj 0:23373ebd6d3a 1 /*********************************************************
MiskinPrj 0:23373ebd6d3a 2 *buggy_functions.cpp *
MiskinPrj 0:23373ebd6d3a 3 *Author: Elijah Orr & Dan Argust *
MiskinPrj 0:23373ebd6d3a 4 * *
MiskinPrj 0:23373ebd6d3a 5 *A library of functions that can be used to control the *
MiskinPrj 0:23373ebd6d3a 6 *RenBuggy. *
MiskinPrj 0:23373ebd6d3a 7 *********************************************************/
MiskinPrj 0:23373ebd6d3a 8
MiskinPrj 0:23373ebd6d3a 9 #ifndef BUGGY_FUNCTIONS_C
MiskinPrj 0:23373ebd6d3a 10 #define BUGGY_FUNCTIONS_C
MiskinPrj 0:23373ebd6d3a 11
MiskinPrj 0:23373ebd6d3a 12 /* necessary includes */
MiskinPrj 0:23373ebd6d3a 13 #include "mbed.h"
MiskinPrj 0:23373ebd6d3a 14 #include "buggy_functions.h"
MiskinPrj 0:23373ebd6d3a 15 #include "SevenSegmentDisplay.h"
MiskinPrj 0:23373ebd6d3a 16
MiskinPrj 0:23373ebd6d3a 17 // PwmOut is used to control the motors
MiskinPrj 0:23373ebd6d3a 18 PwmOut Lmotor(LeftMotorPin);
MiskinPrj 0:23373ebd6d3a 19 PwmOut Rmotor(RightMotorPin);
MiskinPrj 0:23373ebd6d3a 20
MiskinPrj 1:9f6d495cda75 21 //Trim is an offset that you can adjust to help the buggy drive straight
MiskinPrj 1:9f6d495cda75 22 //Trim = -0.3 is a left trim
MiskinPrj 1:9f6d495cda75 23 //Trim = 0.3 is a right trim
MiskinPrj 2:10c115fb71e2 24 float trim = 0.0;
MiskinPrj 0:23373ebd6d3a 25
MiskinPrj 0:23373ebd6d3a 26 //DigitalIn is used as a button
MiskinPrj 0:23373ebd6d3a 27 DigitalIn CurrentButtonState(p7);
MiskinPrj 0:23373ebd6d3a 28 //This bool is used to store the buttons state (pressed/not pressed)
MiskinPrj 0:23373ebd6d3a 29 bool LastButtonState = 0;
MiskinPrj 0:23373ebd6d3a 30
MiskinPrj 0:23373ebd6d3a 31 //This creates an object called "seg" that controls the seven segment display
MiskinPrj 0:23373ebd6d3a 32 SevenSegmentDisplay seg(0);
MiskinPrj 0:23373ebd6d3a 33
MiskinPrj 0:23373ebd6d3a 34 /* Functions (listed below) contain the code that runs the buggy.
MiskinPrj 0:23373ebd6d3a 35 These functions can be used in the main.cpp file */
MiskinPrj 0:23373ebd6d3a 36
MiskinPrj 0:23373ebd6d3a 37
MiskinPrj 0:23373ebd6d3a 38 extern void hold(float time) //waits for (time) seconds
MiskinPrj 0:23373ebd6d3a 39 {
MiskinPrj 0:23373ebd6d3a 40 seg.DisplayDigits(0,0); //Displays the digits 0 and 0
MiskinPrj 0:23373ebd6d3a 41 for (float i = time;i>0;i-=0.01){ //For every hundreth of a second, display the time remaining
MiskinPrj 0:23373ebd6d3a 42 seg.DisplayDigits((int)i/10,(int)i%10);
MiskinPrj 0:23373ebd6d3a 43 wait(0.01);
MiskinPrj 0:23373ebd6d3a 44 }
MiskinPrj 0:23373ebd6d3a 45 }
MiskinPrj 0:23373ebd6d3a 46
MiskinPrj 0:23373ebd6d3a 47 extern void forward(float time) //moves forward for (time) seconds
MiskinPrj 0:23373ebd6d3a 48 {
MiskinPrj 1:9f6d495cda75 49 Lmotor = 1.0 + trim;
MiskinPrj 1:9f6d495cda75 50 Rmotor = 1.0 - trim; //set the left and right motor to 1.0 (full speed) - the trim offset
MiskinPrj 0:23373ebd6d3a 51 hold(time); //wait for (time) seconds while the motors are on
MiskinPrj 0:23373ebd6d3a 52 stop(); //stops the motors
MiskinPrj 0:23373ebd6d3a 53 }
MiskinPrj 0:23373ebd6d3a 54
MiskinPrj 0:23373ebd6d3a 55 extern void left(float time) //moves left for (time) seconds
MiskinPrj 0:23373ebd6d3a 56 {
MiskinPrj 2:10c115fb71e2 57 Rmotor = 1.0 - trim; //set the right motor to full speed
MiskinPrj 0:23373ebd6d3a 58 Lmotor = 0.0; //set the left motor to off
MiskinPrj 0:23373ebd6d3a 59 hold(time); //waits for (time) seconds
MiskinPrj 0:23373ebd6d3a 60 stop(); //stops the motors
MiskinPrj 0:23373ebd6d3a 61 }
MiskinPrj 0:23373ebd6d3a 62
MiskinPrj 0:23373ebd6d3a 63 extern void right(float time) //moves right for (time) seconds
MiskinPrj 0:23373ebd6d3a 64 {
MiskinPrj 2:10c115fb71e2 65 Lmotor = 1.0 + trim; //set the left motor to full speed
MiskinPrj 0:23373ebd6d3a 66 Rmotor = 0.0; //set the right motor to off
MiskinPrj 0:23373ebd6d3a 67 hold(time); //waits for (time) seconds
MiskinPrj 0:23373ebd6d3a 68 stop(); //stops the motors
MiskinPrj 0:23373ebd6d3a 69 }
MiskinPrj 0:23373ebd6d3a 70
MiskinPrj 0:23373ebd6d3a 71 extern void stop() //stops the motors
MiskinPrj 0:23373ebd6d3a 72 {
MiskinPrj 0:23373ebd6d3a 73 Lmotor = Rmotor = 0; //set the speed of each motor to 0
MiskinPrj 0:23373ebd6d3a 74 }
MiskinPrj 0:23373ebd6d3a 75
MiskinPrj 0:23373ebd6d3a 76 extern void readButton(float time) //checks if the button is pressed for (time) seconds
MiskinPrj 0:23373ebd6d3a 77 {
MiskinPrj 0:23373ebd6d3a 78 seg.DisplayDigits(0,0); //displays 0 0 on the seven segment display
MiskinPrj 0:23373ebd6d3a 79 for (float i = time;i>0;i-=0.01) //for each hundreth of a seconds check if the button state goes from low to high (eg. pressed)
MiskinPrj 0:23373ebd6d3a 80 {
MiskinPrj 0:23373ebd6d3a 81 if (CurrentButtonState == 1 and LastButtonState == 0){
MiskinPrj 0:23373ebd6d3a 82 rollDice(); //rolls the dice if the button is pressed
MiskinPrj 0:23373ebd6d3a 83 }
MiskinPrj 0:23373ebd6d3a 84 LastButtonState = CurrentButtonState;
MiskinPrj 0:23373ebd6d3a 85 wait(0.01);
MiskinPrj 0:23373ebd6d3a 86 }
MiskinPrj 0:23373ebd6d3a 87 }
MiskinPrj 0:23373ebd6d3a 88
MiskinPrj 0:23373ebd6d3a 89 extern int rollDice() //a function that randomly generates a number and displays it on the seven segment display
MiskinPrj 0:23373ebd6d3a 90 {
MiskinPrj 0:23373ebd6d3a 91 int tens; //declare two variables, tens and units to store the number to be displayed
MiskinPrj 0:23373ebd6d3a 92 int units;
MiskinPrj 0:23373ebd6d3a 93 for (int i = 20;i>0;i--){
MiskinPrj 0:23373ebd6d3a 94 tens = rand()%9; //generate a random number from 0-9 and store it in "tens"
MiskinPrj 0:23373ebd6d3a 95 units = rand()%9;
MiskinPrj 0:23373ebd6d3a 96 seg.DisplayDigits(tens,units); //display the numbers stored in tens and units
MiskinPrj 0:23373ebd6d3a 97 wait(0.04);
MiskinPrj 0:23373ebd6d3a 98 }
MiskinPrj 0:23373ebd6d3a 99 return tens*10+units;
MiskinPrj 0:23373ebd6d3a 100 }
MiskinPrj 0:23373ebd6d3a 101 #endif // BUGGY_FUNCTIONS_C