Life Clock / Mbed 2 deprecated WifiReceiver

Communicates with the WiFi - be very careful when using as it is tempremental.

Dependencies:   mbed

initiateWifi.cpp@3:b593f43b7251, 2017-05-25 (annotated)

Committer:
qdanilc
Date:
Thu May 25 10:37:33 2017 +0000
Revision:
3:b593f43b7251
Parent:
2:0b9ca0830cd3
Child:
4:65f657998b7d
Has an automated startup sequence;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
qdanilc 1:cd1fe330bc2a 1 #include "mbed.h"
qdanilc 1:cd1fe330bc2a 2 #include "RawSerial.h"
qdanilc 1:cd1fe330bc2a 3
qdanilc 3:b593f43b7251 4 //setup the other wifi pins
qdanilc 1:cd1fe330bc2a 5 DigitalOut rstPin (PTE29);
qdanilc 1:cd1fe330bc2a 6 DigitalOut chpdPin (PTE23);
qdanilc 1:cd1fe330bc2a 7
qdanilc 1:cd1fe330bc2a 8
qdanilc 1:cd1fe330bc2a 9 RawSerial esp (PTC4, PTC3, 115200); //setup a serial to the (board) Tx = PTC4 and Rx = PTC3 pins at baud rate 115200
qdanilc 1:cd1fe330bc2a 10
qdanilc 1:cd1fe330bc2a 11 Serial pc(USBTX, USBRX, 115200);
qdanilc 1:cd1fe330bc2a 12
qdanilc 3:b593f43b7251 13 DigitalOut redLED(LED1); // twp leds
qdanilc 1:cd1fe330bc2a 14 DigitalOut greenLED(LED2); // to allow visual check of bidirectional comms
qdanilc 1:cd1fe330bc2a 15 DigitalOut blueLED(LED3); //to prove it's working
qdanilc 3:b593f43b7251 16 char c;
qdanilc 3:b593f43b7251 17 char * buffer = (char *)malloc(128); //setup a buffer 128 characters long
qdanilc 3:b593f43b7251 18 char * nextBuff; // a pointer to the next character being added to the buffer
qdanilc 1:cd1fe330bc2a 19
qdanilc 1:cd1fe330bc2a 20 char input; //character to store inputs/outputs in communication
qdanilc 2:0b9ca0830cd3 21 char* startCommands[10]= {
qdanilc 2:0b9ca0830cd3 22 "AT",
qdanilc 2:0b9ca0830cd3 23 "AT",
qdanilc 2:0b9ca0830cd3 24 "AT",
qdanilc 2:0b9ca0830cd3 25 "AT+RST",
qdanilc 2:0b9ca0830cd3 26 "AT+CWMODE=1",
qdanilc 3:b593f43b7251 27 "AT+CWJAP=\"Hotspot\",\"password\"", //name and password of wifi
qdanilc 2:0b9ca0830cd3 28 "AT+CIFSR",
qdanilc 2:0b9ca0830cd3 29 "AT+CIPMUX=1",
qdanilc 2:0b9ca0830cd3 30 "AT+CIPSERVER=1,8080",
qdanilc 2:0b9ca0830cd3 31 "AT+CIPSEND=0,"
qdanilc 2:0b9ca0830cd3 32 };
qdanilc 1:cd1fe330bc2a 33
qdanilc 1:cd1fe330bc2a 34
qdanilc 2:0b9ca0830cd3 35 int numberOfCommands;
qdanilc 3:b593f43b7251 36 int commandsExecuted;
qdanilc 3:b593f43b7251 37 int gotLine = 0; // boolean for whether we have a line
qdanilc 2:0b9ca0830cd3 38
qdanilc 2:0b9ca0830cd3 39
qdanilc 3:b593f43b7251 40 void start()
qdanilc 3:b593f43b7251 41 {
qdanilc 2:0b9ca0830cd3 42 pc.printf("Initialising start sequence\r\n");
qdanilc 3:b593f43b7251 43
qdanilc 3:b593f43b7251 44
qdanilc 2:0b9ca0830cd3 45 //numberOfCommands = sizeof(startCommands)/sizeof(startCommands[0]);
qdanilc 2:0b9ca0830cd3 46 numberOfCommands = 10;
qdanilc 3:b593f43b7251 47
qdanilc 3:b593f43b7251 48 commandsExecuted = 0;
qdanilc 3:b593f43b7251 49 esp.printf("%s\r\n",startCommands[commandsExecuted]);
qdanilc 3:b593f43b7251 50 while (commandsExecuted < numberOfCommands) { //loop until we have executed all the commands
qdanilc 3:b593f43b7251 51 if(gotLine) { // if esp signals that it's ready to receive a command, send the next command
qdanilc 3:b593f43b7251 52 pc.printf("\r\ncommand %d",commandsExecuted); //identify the command number
qdanilc 3:b593f43b7251 53 pc.printf("\r\n");
qdanilc 3:b593f43b7251 54
qdanilc 3:b593f43b7251 55 esp.printf("%s\r\n",startCommands[commandsExecuted]); //send command
qdanilc 3:b593f43b7251 56 commandsExecuted ++; //increment the counter
qdanilc 3:b593f43b7251 57 gotLine = 0;
qdanilc 3:b593f43b7251 58 }
qdanilc 2:0b9ca0830cd3 59 }
qdanilc 2:0b9ca0830cd3 60 }
qdanilc 2:0b9ca0830cd3 61
qdanilc 3:b593f43b7251 62 void reset() //resets the module by turning rst off for 2 seconds then on again
qdanilc 3:b593f43b7251 63 {
qdanilc 1:cd1fe330bc2a 64 rstPin = 0;
qdanilc 1:cd1fe330bc2a 65 wait(2);
qdanilc 1:cd1fe330bc2a 66 rstPin = 1;
qdanilc 1:cd1fe330bc2a 67 pc.printf("Reset complete\r\n");
qdanilc 3:b593f43b7251 68
qdanilc 1:cd1fe330bc2a 69 }
qdanilc 1:cd1fe330bc2a 70 void esp_recv()
qdanilc 1:cd1fe330bc2a 71 {
qdanilc 3:b593f43b7251 72 char d;
qdanilc 3:b593f43b7251 73 nextBuff = buffer; //make nextbuff point to beginning fo buffe
qdanilc 3:b593f43b7251 74
qdanilc 1:cd1fe330bc2a 75 while(esp.readable()) {
qdanilc 3:b593f43b7251 76 d = esp.getc(); // get character sent by the esp
qdanilc 3:b593f43b7251 77
qdanilc 3:b593f43b7251 78 pc.putc(d); // get character sent by the esp
qdanilc 3:b593f43b7251 79 * nextBuff = d; //store in nextBuff
qdanilc 3:b593f43b7251 80 nextBuff ++;
qdanilc 3:b593f43b7251 81 if (d== '\n' ) { // if our first two characters are return and newline, then we have reached the end of the line
qdanilc 3:b593f43b7251 82 pc.putc('!');
qdanilc 3:b593f43b7251 83 nextBuff = buffer; // what does this do????????????/
qdanilc 3:b593f43b7251 84 gotLine = 1;
qdanilc 3:b593f43b7251 85 }
qdanilc 3:b593f43b7251 86
qdanilc 3:b593f43b7251 87
qdanilc 1:cd1fe330bc2a 88 }
qdanilc 1:cd1fe330bc2a 89 }
qdanilc 1:cd1fe330bc2a 90 void pc_recv()
qdanilc 1:cd1fe330bc2a 91 {
qdanilc 1:cd1fe330bc2a 92 char c;
qdanilc 1:cd1fe330bc2a 93 greenLED = !greenLED;
qdanilc 1:cd1fe330bc2a 94 while(pc.readable()) {
qdanilc 3:b593f43b7251 95 c=pc.getc(); // get typed input
qdanilc 3:b593f43b7251 96
qdanilc 3:b593f43b7251 97
qdanilc 3:b593f43b7251 98 if(c==13) { //send enter
qdanilc 3:b593f43b7251 99
qdanilc 2:0b9ca0830cd3 100 esp.putc(10); //send the command by pressing enter
qdanilc 1:cd1fe330bc2a 101 pc.putc(10); //ie makes enter perform as expected
qdanilc 3:b593f43b7251 102 }
qdanilc 3:b593f43b7251 103
qdanilc 3:b593f43b7251 104 else if(c=='y') { // send the startup sequence
qdanilc 3:b593f43b7251 105 start();
qdanilc 3:b593f43b7251 106 } else {
qdanilc 3:b593f43b7251 107 esp.putc(c);
qdanilc 1:cd1fe330bc2a 108 }
qdanilc 1:cd1fe330bc2a 109 }
qdanilc 1:cd1fe330bc2a 110 }
qdanilc 1:cd1fe330bc2a 111
qdanilc 3:b593f43b7251 112 void initiateWifi()
qdanilc 3:b593f43b7251 113 {
qdanilc 3:b593f43b7251 114
qdanilc 1:cd1fe330bc2a 115 //initialise the pins
qdanilc 1:cd1fe330bc2a 116 rstPin = 1;
qdanilc 1:cd1fe330bc2a 117 chpdPin = 1;
qdanilc 3:b593f43b7251 118
qdanilc 1:cd1fe330bc2a 119 reset(); //perform an initial reset
qdanilc 3:b593f43b7251 120
qdanilc 1:cd1fe330bc2a 121 blueLED = 1; //turn on test light
qdanilc 1:cd1fe330bc2a 122
qdanilc 1:cd1fe330bc2a 123 pc.attach(&pc_recv, Serial::RxIrq); // attach the two interrupt services
qdanilc 1:cd1fe330bc2a 124 esp.attach(&esp_recv, Serial::RxIrq);
qdanilc 3:b593f43b7251 125 for (char i=10; i>0; i--) {
qdanilc 3:b593f43b7251 126 pc.printf("%d\r\n", i);
qdanilc 3:b593f43b7251 127 wait(1);
qdanilc 3:b593f43b7251 128 }
qdanilc 3:b593f43b7251 129 start();
qdanilc 1:cd1fe330bc2a 130
qdanilc 1:cd1fe330bc2a 131 }