Life Clock / Mbed 2 deprecated WifiReceiver

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

Dependencies:   mbed

initiateWifi.cpp@4:65f657998b7d, 2017-05-25 (annotated)

Committer:
qdanilc
Date:
Thu May 25 11:27:17 2017 +0000
Revision:
4:65f657998b7d
Parent:
3:b593f43b7251
Child:
5:79618eee4d54
automatically sends the start sequence by listening to esp's response.

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 4:65f657998b7d 30 "AT+CIPSTART=4","TCP","172.217.23.19","5005", //connect to soroush's server
qdanilc 4:65f657998b7d 31 "AT+CIPSEND=4,1"
qdanilc 4:65f657998b7d 32 "a" // send a single char
qdanilc 2:0b9ca0830cd3 33 };
qdanilc 1:cd1fe330bc2a 34
qdanilc 1:cd1fe330bc2a 35
qdanilc 2:0b9ca0830cd3 36 int numberOfCommands;
qdanilc 3:b593f43b7251 37 int commandsExecuted;
qdanilc 3:b593f43b7251 38 int gotLine = 0; // boolean for whether we have a line
qdanilc 2:0b9ca0830cd3 39
qdanilc 2:0b9ca0830cd3 40
qdanilc 3:b593f43b7251 41 void start()
qdanilc 3:b593f43b7251 42 {
qdanilc 2:0b9ca0830cd3 43 pc.printf("Initialising start sequence\r\n");
qdanilc 3:b593f43b7251 44
qdanilc 3:b593f43b7251 45
qdanilc 2:0b9ca0830cd3 46 //numberOfCommands = sizeof(startCommands)/sizeof(startCommands[0]);
qdanilc 2:0b9ca0830cd3 47 numberOfCommands = 10;
qdanilc 3:b593f43b7251 48
qdanilc 3:b593f43b7251 49 commandsExecuted = 0;
qdanilc 3:b593f43b7251 50 esp.printf("%s\r\n",startCommands[commandsExecuted]);
qdanilc 3:b593f43b7251 51 while (commandsExecuted < numberOfCommands) { //loop until we have executed all the commands
qdanilc 3:b593f43b7251 52 if(gotLine) { // if esp signals that it's ready to receive a command, send the next command
qdanilc 3:b593f43b7251 53 pc.printf("\r\ncommand %d",commandsExecuted); //identify the command number
qdanilc 3:b593f43b7251 54 pc.printf("\r\n");
qdanilc 3:b593f43b7251 55
qdanilc 3:b593f43b7251 56 esp.printf("%s\r\n",startCommands[commandsExecuted]); //send command
qdanilc 3:b593f43b7251 57 commandsExecuted ++; //increment the counter
qdanilc 3:b593f43b7251 58 gotLine = 0;
qdanilc 3:b593f43b7251 59 }
qdanilc 2:0b9ca0830cd3 60 }
qdanilc 2:0b9ca0830cd3 61 }
qdanilc 2:0b9ca0830cd3 62
qdanilc 3:b593f43b7251 63 void reset() //resets the module by turning rst off for 2 seconds then on again
qdanilc 3:b593f43b7251 64 {
qdanilc 1:cd1fe330bc2a 65 rstPin = 0;
qdanilc 1:cd1fe330bc2a 66 wait(2);
qdanilc 1:cd1fe330bc2a 67 rstPin = 1;
qdanilc 1:cd1fe330bc2a 68 pc.printf("Reset complete\r\n");
qdanilc 3:b593f43b7251 69
qdanilc 1:cd1fe330bc2a 70 }
qdanilc 1:cd1fe330bc2a 71 void esp_recv()
qdanilc 1:cd1fe330bc2a 72 {
qdanilc 3:b593f43b7251 73 char d;
qdanilc 3:b593f43b7251 74 nextBuff = buffer; //make nextbuff point to beginning fo buffe
qdanilc 3:b593f43b7251 75
qdanilc 1:cd1fe330bc2a 76 while(esp.readable()) {
qdanilc 4:65f657998b7d 77 d = esp.getc(); // get character sent by the esp
qdanilc 3:b593f43b7251 78
qdanilc 3:b593f43b7251 79 pc.putc(d); // get character sent by the esp
qdanilc 3:b593f43b7251 80 * nextBuff = d; //store in nextBuff
qdanilc 3:b593f43b7251 81 nextBuff ++;
qdanilc 3:b593f43b7251 82 if (d== '\n' ) { // if our first two characters are return and newline, then we have reached the end of the line
qdanilc 3:b593f43b7251 83 pc.putc('!');
qdanilc 3:b593f43b7251 84 nextBuff = buffer; // what does this do????????????/
qdanilc 3:b593f43b7251 85 gotLine = 1;
qdanilc 3:b593f43b7251 86 }
qdanilc 3:b593f43b7251 87
qdanilc 3:b593f43b7251 88
qdanilc 1:cd1fe330bc2a 89 }
qdanilc 1:cd1fe330bc2a 90 }
qdanilc 1:cd1fe330bc2a 91 void pc_recv()
qdanilc 1:cd1fe330bc2a 92 {
qdanilc 1:cd1fe330bc2a 93 char c;
qdanilc 1:cd1fe330bc2a 94 greenLED = !greenLED;
qdanilc 1:cd1fe330bc2a 95 while(pc.readable()) {
qdanilc 3:b593f43b7251 96 c=pc.getc(); // get typed input
qdanilc 3:b593f43b7251 97
qdanilc 3:b593f43b7251 98
qdanilc 3:b593f43b7251 99 if(c==13) { //send enter
qdanilc 3:b593f43b7251 100
qdanilc 2:0b9ca0830cd3 101 esp.putc(10); //send the command by pressing enter
qdanilc 1:cd1fe330bc2a 102 pc.putc(10); //ie makes enter perform as expected
qdanilc 3:b593f43b7251 103 }
qdanilc 3:b593f43b7251 104
qdanilc 3:b593f43b7251 105 else if(c=='y') { // send the startup sequence
qdanilc 3:b593f43b7251 106 start();
qdanilc 3:b593f43b7251 107 } else {
qdanilc 3:b593f43b7251 108 esp.putc(c);
qdanilc 1:cd1fe330bc2a 109 }
qdanilc 1:cd1fe330bc2a 110 }
qdanilc 1:cd1fe330bc2a 111 }
qdanilc 1:cd1fe330bc2a 112
qdanilc 3:b593f43b7251 113 void initiateWifi()
qdanilc 3:b593f43b7251 114 {
qdanilc 3:b593f43b7251 115
qdanilc 1:cd1fe330bc2a 116 //initialise the pins
qdanilc 1:cd1fe330bc2a 117 rstPin = 1;
qdanilc 1:cd1fe330bc2a 118 chpdPin = 1;
qdanilc 3:b593f43b7251 119
qdanilc 1:cd1fe330bc2a 120 reset(); //perform an initial reset
qdanilc 3:b593f43b7251 121
qdanilc 1:cd1fe330bc2a 122 blueLED = 1; //turn on test light
qdanilc 1:cd1fe330bc2a 123
qdanilc 1:cd1fe330bc2a 124 pc.attach(&pc_recv, Serial::RxIrq); // attach the two interrupt services
qdanilc 1:cd1fe330bc2a 125 esp.attach(&esp_recv, Serial::RxIrq);
qdanilc 4:65f657998b7d 126 for (char i=5; i>0; i--) {
qdanilc 3:b593f43b7251 127 pc.printf("%d\r\n", i);
qdanilc 3:b593f43b7251 128 wait(1);
qdanilc 3:b593f43b7251 129 }
qdanilc 4:65f657998b7d 130 //start();
qdanilc 1:cd1fe330bc2a 131
qdanilc 1:cd1fe330bc2a 132 }