Oscillators / Mbed 2 deprecated Lab3

yup

Dependencies:   keypad mbed

Fork of Lab3 by Matthew Dorshimer

main.cpp@10:337f8b757d8d, 2016-11-28 (annotated)

Committer:
Dorsh
Date:
Mon Nov 28 17:47:24 2016 +0000
Revision:
10:337f8b757d8d
Parent:
9:192484f373fd
Child:
11:3cc46e37f97f
Some organizational changes + added comments to the code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Dorsh 4:a10c7172b4f6 1 #include "mbed.h"
Dorsh 4:a10c7172b4f6 2 #include "Keypad.h" //Open Source Library for adaFruit KeyPad
Dorsh 4:a10c7172b4f6 3 //Modified to work with 4 row 3 col keypad
Dorsh 4:a10c7172b4f6 4 #include "CAN.h" //Open Source Library for CAN transmitter
simon 0:fb6bbc10ffa0 5
Dorsh 10:337f8b757d8d 6 /*
Dorsh 10:337f8b757d8d 7 * Written By:
Dorsh 10:337f8b757d8d 8 * Matthew Dorshimer
Dorsh 10:337f8b757d8d 9 * Ian
Dorsh 10:337f8b757d8d 10 * Mohammed
Dorsh 10:337f8b757d8d 11 *
Dorsh 10:337f8b757d8d 12 * A keypad with 12 buttons (0-9,*,#) controls the Digital-Analog Conveter,
Dorsh 10:337f8b757d8d 13 * DigiPot, and Analog-Digial Converter Subsystems
Dorsh 10:337f8b757d8d 14 * This program controls the subsystems by sending messages to the CAN Bus
Dorsh 10:337f8b757d8d 15 *
Dorsh 10:337f8b757d8d 16 * Only one subsystem can be controlled at a time. Pressing '#' switches the active
Dorsh 10:337f8b757d8d 17 * subsystem. This gives each subsystem complete control of the keypad
Dorsh 10:337f8b757d8d 18 *
Dorsh 10:337f8b757d8d 19 * Left to Do:
Dorsh 10:337f8b757d8d 20 * We have not successfully read any messages. Once we can successfully
Dorsh 10:337f8b757d8d 21 * read messages, the keypad subsystem is complete
Dorsh 10:337f8b757d8d 22 */
Dorsh 10:337f8b757d8d 23
Dorsh 10:337f8b757d8d 24 void createMessage(char* msg); //Creates message based off Keytable[Index] press
Dorsh 10:337f8b757d8d 25 void send(char* msg); //Takes the created message and sends to the CAN Bus
Dorsh 10:337f8b757d8d 26
Dorsh 10:337f8b757d8d 27 //DigitalOut myled(LED1);
Dorsh 8:9af374c3b559 28 CAN can2(p30,p29);
Dorsh 9:192484f373fd 29 CAN can1(p9,p10);
Dorsh 10:337f8b757d8d 30 const int msgLength = 8; //Length of message sent to CAN Bus
Dorsh 4:a10c7172b4f6 31 char Keytable[] = { '1', '2', '3', // r0
Dorsh 4:a10c7172b4f6 32 '4', '5', '6', // r1
Dorsh 4:a10c7172b4f6 33 '7', '8', '9', // r2
Dorsh 4:a10c7172b4f6 34 '*', '0', '#', // r3
Dorsh 4:a10c7172b4f6 35 };
Dorsh 4:a10c7172b4f6 36 // c0 c1 c2
Dorsh 2:022b41ff9719 37
Dorsh 10:337f8b757d8d 38 //Runs whenever a key is pressed
Dorsh 4:a10c7172b4f6 39 //Assigns Index to the value generated by the keypad
Dorsh 10:337f8b757d8d 40 //The value generated by the keypad is the index of the key pressed
Dorsh 4:a10c7172b4f6 41 uint32_t Index;
Dorsh 4:a10c7172b4f6 42 uint32_t cbAfterInput(uint32_t index) {
Dorsh 4:a10c7172b4f6 43 Index = index;
Dorsh 4:a10c7172b4f6 44 return 0;
Dorsh 4:a10c7172b4f6 45 }
Dorsh 2:022b41ff9719 46
Dorsh 4:a10c7172b4f6 47
Dorsh 4:a10c7172b4f6 48 int main() {
Dorsh 4:a10c7172b4f6 49 // r0 r1 r2 r3 c0 c1 c2
Dorsh 2:022b41ff9719 50 Keypad keypad(p21, p22, p23, p24, p25, p26, p27);
Dorsh 2:022b41ff9719 51 keypad.attach(&cbAfterInput);
Dorsh 2:022b41ff9719 52 keypad.start(); // energize the keypad via c0-c3
Dorsh 10:337f8b757d8d 53
Dorsh 10:337f8b757d8d 54 char msg[msgLength];//initialize to something 8 characters
Dorsh 9:192484f373fd 55 CANMessage recievedMessage;
Dorsh 4:a10c7172b4f6 56 while (1) {
Dorsh 6:7ed6688e3caf 57 __wfi(); //waits for input
Dorsh 4:a10c7172b4f6 58 printf("Interrupted\r\n");
Dorsh 2:022b41ff9719 59 wait(0.5);
Dorsh 2:022b41ff9719 60 send(msg);
Dorsh 4:a10c7172b4f6 61 printf("Index:%d => Key:%c\r\n", Index, Keytable[Index]);
Dorsh 9:192484f373fd 62 if(can2.read(recievedMessage)) {
Dorsh 9:192484f373fd 63 printf("Message received: %s\n", recievedMessage.data);
Dorsh 10:337f8b757d8d 64 } //This never runs. Message can never be received for some reason
Dorsh 2:022b41ff9719 65 }
Dorsh 10:337f8b757d8d 66 }
Dorsh 10:337f8b757d8d 67
Dorsh 10:337f8b757d8d 68
Dorsh 10:337f8b757d8d 69 void send(char *str) {
Dorsh 10:337f8b757d8d 70 createMessage(str);
Dorsh 10:337f8b757d8d 71 printf("send(%s)\n",str);
Dorsh 10:337f8b757d8d 72 if(can1.write(CANMessage(1337, str, msgLength))) {
Dorsh 10:337f8b757d8d 73 printf("wrote successfully\n");
Dorsh 10:337f8b757d8d 74 }
Dorsh 10:337f8b757d8d 75 }
Dorsh 10:337f8b757d8d 76
Dorsh 10:337f8b757d8d 77 //Returns a specific message to be sent to the CAN Bus
Dorsh 10:337f8b757d8d 78 void createMessage(char msg[]) {
Dorsh 10:337f8b757d8d 79
Dorsh 10:337f8b757d8d 80 char key = Keytable[Index];
Dorsh 10:337f8b757d8d 81 static int subsys = 0; //0 = DAC, 1 = DigiPot, 2 = ADC
Dorsh 10:337f8b757d8d 82 //static will keep the state of subsys after each call
Dorsh 10:337f8b757d8d 83 const char* sysName[] = {"DAC", "DigiPot", "ADC"};
Dorsh 10:337f8b757d8d 84 const int numOfSubsys = 3;
Dorsh 10:337f8b757d8d 85
Dorsh 10:337f8b757d8d 86 //Cycles between subsystems when the '#' key is pressed
Dorsh 10:337f8b757d8d 87 if(key == '#') {
Dorsh 10:337f8b757d8d 88 subsys = (subsys + 1) % (numOfSubsys); //cycles from 0,1,2,0,1,2,etc
Dorsh 10:337f8b757d8d 89 printf("Now working with Subsystem %s\n", sysName[subsys]);
Dorsh 10:337f8b757d8d 90 memset(msg, '\0', sizeof(msg));
Dorsh 10:337f8b757d8d 91 strcpy(msg,"switch");
Dorsh 10:337f8b757d8d 92 printf("this is the solution\n");
Dorsh 10:337f8b757d8d 93 }
Dorsh 10:337f8b757d8d 94
Dorsh 10:337f8b757d8d 95 //Handles all message creation
Dorsh 10:337f8b757d8d 96 //Work with the other teams to determine what they need
Dorsh 10:337f8b757d8d 97 //Stick to 8 characters (8 bytes) max
Dorsh 10:337f8b757d8d 98 //Probably better to use a code (like hex or something)
Dorsh 10:337f8b757d8d 99 else {
Dorsh 10:337f8b757d8d 100 switch(subsys) {
Dorsh 10:337f8b757d8d 101 case 0:
Dorsh 10:337f8b757d8d 102 if(key == '*')
Dorsh 10:337f8b757d8d 103 strcpy(msg, "D_");
Dorsh 10:337f8b757d8d 104 else if(key == '1')
Dorsh 10:337f8b757d8d 105 strcpy(msg, "D_");
Dorsh 10:337f8b757d8d 106 break;
Dorsh 10:337f8b757d8d 107 case 1:
Dorsh 10:337f8b757d8d 108 if(key == '*')
Dorsh 10:337f8b757d8d 109 strcpy(msg, "DACswitc");
Dorsh 10:337f8b757d8d 110 else if(key == '1')
Dorsh 10:337f8b757d8d 111 strcpy(msg, "DACswitc");
Dorsh 10:337f8b757d8d 112 break;
Dorsh 10:337f8b757d8d 113 case 2:
Dorsh 10:337f8b757d8d 114 if(key == '*')
Dorsh 10:337f8b757d8d 115 strcpy(msg, "A_switch");
Dorsh 10:337f8b757d8d 116 break;
Dorsh 10:337f8b757d8d 117 default:
Dorsh 10:337f8b757d8d 118 strcpy(msg, "null"); //no message
Dorsh 10:337f8b757d8d 119 break;
Dorsh 10:337f8b757d8d 120
Dorsh 10:337f8b757d8d 121 }
Dorsh 10:337f8b757d8d 122 }
Dorsh 10:337f8b757d8d 123 }