Maxim Integrated / Mbed 2 deprecated LED_Remote

This program listens to a websocket and when the server sends the appropriate ASCII combinations through the websocket, the appropriate LED lights up (red, blue, or green).

Dependencies:   WebSocketClient mbed-rtos mbed

main.cpp@0:181c1ea775ea, 2015-01-29 (annotated)

Committer:
brianh
Date:
Thu Jan 29 01:12:59 2015 +0000
Revision:
0:181c1ea775ea
Very first commit of the LED_Remote program.  It is a functional Websocket program and has been proven to work with Node.js.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
brianh 0:181c1ea775ea 1 /*******************************************************************************
brianh 0:181c1ea775ea 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
brianh 0:181c1ea775ea 3 *
brianh 0:181c1ea775ea 4 * Permission is hereby granted, free of charge, to any person obtaining a
brianh 0:181c1ea775ea 5 * copy of this software and associated documentation files (the "Software"),
brianh 0:181c1ea775ea 6 * to deal in the Software without restriction, including without limitation
brianh 0:181c1ea775ea 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
brianh 0:181c1ea775ea 8 * and/or sell copies of the Software, and to permit persons to whom the
brianh 0:181c1ea775ea 9 * Software is furnished to do so, subject to the following conditions:
brianh 0:181c1ea775ea 10 *
brianh 0:181c1ea775ea 11 * The above copyright notice and this permission notice shall be included
brianh 0:181c1ea775ea 12 * in all copies or substantial portions of the Software.
brianh 0:181c1ea775ea 13 *
brianh 0:181c1ea775ea 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
brianh 0:181c1ea775ea 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
brianh 0:181c1ea775ea 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
brianh 0:181c1ea775ea 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
brianh 0:181c1ea775ea 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
brianh 0:181c1ea775ea 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
brianh 0:181c1ea775ea 20 * OTHER DEALINGS IN THE SOFTWARE.
brianh 0:181c1ea775ea 21 *
brianh 0:181c1ea775ea 22 * Except as contained in this notice, the name of Maxim Integrated
brianh 0:181c1ea775ea 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
brianh 0:181c1ea775ea 24 * Products, Inc. Branding Policy.
brianh 0:181c1ea775ea 25 *
brianh 0:181c1ea775ea 26 * The mere transfer of this software does not imply any licenses
brianh 0:181c1ea775ea 27 * of trade secrets, proprietary technology, copyrights, patents,
brianh 0:181c1ea775ea 28 * trademarks, maskwork rights, or any other form of intellectual
brianh 0:181c1ea775ea 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
brianh 0:181c1ea775ea 30 * ownership rights.
brianh 0:181c1ea775ea 31 *******************************************************************************
brianh 0:181c1ea775ea 32 *
brianh 0:181c1ea775ea 33 * LEDRemote version 1.0 is a program that listens for ACII characters from a
brianh 0:181c1ea775ea 34 * websocket. If the correct ASCII characters are sent, the onboard LED on
brianh 0:181c1ea775ea 35 * a Freescale Freedom board (K64F) will light an LED. For example, if "R1" or
brianh 0:181c1ea775ea 36 * "R2" is received the RED LED gets exercised. "B1" and "B0" exercises the blue
brianh 0:181c1ea775ea 37 * LED, and "G1" and "G0" exercises the green LED.
brianh 0:181c1ea775ea 38 *
brianh 0:181c1ea775ea 39 */
brianh 0:181c1ea775ea 40
brianh 0:181c1ea775ea 41 #include "mbed.h"
brianh 0:181c1ea775ea 42 #include "EthernetInterface.h"
brianh 0:181c1ea775ea 43 #include "Websocket.h"
brianh 0:181c1ea775ea 44
brianh 0:181c1ea775ea 45 DigitalOut ledr(PTB22);
brianh 0:181c1ea775ea 46 DigitalOut ledg(PTE26);
brianh 0:181c1ea775ea 47 DigitalOut ledb(PTB21);
brianh 0:181c1ea775ea 48 //DigitalIn sw(PTA4);
brianh 0:181c1ea775ea 49
brianh 0:181c1ea775ea 50 int main() {
brianh 0:181c1ea775ea 51 int res;
brianh 0:181c1ea775ea 52 char buf[100]={0};
brianh 0:181c1ea775ea 53 char comparebuf[2]={0};
brianh 0:181c1ea775ea 54 char msg[100];
brianh 0:181c1ea775ea 55 ledg = 1;
brianh 0:181c1ea775ea 56 ledr = 1;
brianh 0:181c1ea775ea 57 ledb = 1;
brianh 0:181c1ea775ea 58 bool startup = true;
brianh 0:181c1ea775ea 59 int startupmode = 0;
brianh 0:181c1ea775ea 60 int startupledcount = 0;
brianh 0:181c1ea775ea 61
brianh 0:181c1ea775ea 62 //bool pb = 1;
brianh 0:181c1ea775ea 63
brianh 0:181c1ea775ea 64 //BW_MPU_CESR_VLD(0);// k64f workaround mentioned here (to turn off MPU): https://community.freescale.com/thread/324825
brianh 0:181c1ea775ea 65 //wait(1);
brianh 0:181c1ea775ea 66 //clock_manager_set_gate(kClockModuleENET,0,true); // turn on clock
brianh 0:181c1ea775ea 67
brianh 0:181c1ea775ea 68 printf("\r\n---- Maxim's WebSocket example with the k64f board ----\r\n");
brianh 0:181c1ea775ea 69 EthernetInterface eth;
brianh 0:181c1ea775ea 70 eth.init();
brianh 0:181c1ea775ea 71 eth.connect();
brianh 0:181c1ea775ea 72 //wait(1.0);
brianh 0:181c1ea775ea 73 printf("IP Address is %s\r\n", eth.getIPAddress());
brianh 0:181c1ea775ea 74 wait(1.0);
brianh 0:181c1ea775ea 75
brianh 0:181c1ea775ea 76 // Change YOURLOGIN for your mbed login so you can communicate to the board
brianh 0:181c1ea775ea 77 // using the mbed websocket at:
brianh 0:181c1ea775ea 78 // http://sockets.mbed.org/YOURLOGIN
brianh 0:181c1ea775ea 79 //Websocket ws("ws://sockets.mbed.org/ws/brianh/ro"); // over port 80 (html)
brianh 0:181c1ea775ea 80 //Websocket ws("ws://sockets.mbed.org:443/ws/brianh/rw"); // secure TLS
brianh 0:181c1ea775ea 81
brianh 0:181c1ea775ea 82 //Websocket ws("ws://192.168.1.12:8080/"); // home -- notice forward slash is necessary
brianh 0:181c1ea775ea 83 Websocket ws("ws://10.17.245.247:8080/"); // Dallas -- Mbed needs the slash at the end or the websocket won't connect properly without a path
brianh 0:181c1ea775ea 84 //Websocket ws("ws://10.33.245.13:8080/"); // California -- Mbed needs the slash at the end or the websocket won't connect properly without a path
brianh 0:181c1ea775ea 85 //Websocket ws("ws://dal-lt-BHindman.maxim-ic.internal:8080/"); // laptop
brianh 0:181c1ea775ea 86 //wait(1.0);
brianh 0:181c1ea775ea 87
brianh 0:181c1ea775ea 88 ws.connect();
brianh 0:181c1ea775ea 89 wait(1.0);
brianh 0:181c1ea775ea 90
brianh 0:181c1ea775ea 91 //ws.send("st");
brianh 0:181c1ea775ea 92 //while (pb)
brianh 0:181c1ea775ea 93 while(1)
brianh 0:181c1ea775ea 94 {
brianh 0:181c1ea775ea 95 if (ws.is_connected())
brianh 0:181c1ea775ea 96 {
brianh 0:181c1ea775ea 97 if (startup)
brianh 0:181c1ea775ea 98 {
brianh 0:181c1ea775ea 99 startupledcount++; // count number of loops while websocket is connected
brianh 0:181c1ea775ea 100 if (startupledcount > 20)
brianh 0:181c1ea775ea 101 {
brianh 0:181c1ea775ea 102 startupledcount = 0;
brianh 0:181c1ea775ea 103 startupmode++;
brianh 0:181c1ea775ea 104 if (startupmode == 1) ws.send("st"); // request server to send state of red led
brianh 0:181c1ea775ea 105 if (startupmode == 2) ws.send("su"); // request server to send state of green led
brianh 0:181c1ea775ea 106 if (startupmode == 3) ws.send("sv"); // request server to send state of blue led
brianh 0:181c1ea775ea 107 if (startupmode == 3) startup = false;
brianh 0:181c1ea775ea 108 }
brianh 0:181c1ea775ea 109
brianh 0:181c1ea775ea 110 }
brianh 0:181c1ea775ea 111 //printf("is_connected() is true \r\n");
brianh 0:181c1ea775ea 112 // read from websocket the led that should be turned on.
brianh 0:181c1ea775ea 113 if(!ws.read(buf))
brianh 0:181c1ea775ea 114 {
brianh 0:181c1ea775ea 115 //printf("%c",buf[0]);
brianh 0:181c1ea775ea 116 // is it red?
brianh 0:181c1ea775ea 117 if(buf[0] == 'r')
brianh 0:181c1ea775ea 118 {
brianh 0:181c1ea775ea 119 if(buf[1] == '0')
brianh 0:181c1ea775ea 120 {
brianh 0:181c1ea775ea 121 ledr = 0;
brianh 0:181c1ea775ea 122 if ((comparebuf[0] != buf[0]) || (comparebuf[1] != buf[1])) printf("Turned red LED on\n\r");
brianh 0:181c1ea775ea 123 }
brianh 0:181c1ea775ea 124 else
brianh 0:181c1ea775ea 125 {
brianh 0:181c1ea775ea 126 ledr = 1;
brianh 0:181c1ea775ea 127 if ((comparebuf[0] != buf[0]) || (comparebuf[1] != buf[1])) printf("Turned red LED off\n\r");
brianh 0:181c1ea775ea 128 }
brianh 0:181c1ea775ea 129 }
brianh 0:181c1ea775ea 130 // is it green?
brianh 0:181c1ea775ea 131 if(buf[0] == 'g')
brianh 0:181c1ea775ea 132 {
brianh 0:181c1ea775ea 133 //printf("g! \r\n");
brianh 0:181c1ea775ea 134 if(buf[1] == '0')
brianh 0:181c1ea775ea 135 {
brianh 0:181c1ea775ea 136 ledg = 0;
brianh 0:181c1ea775ea 137 if ((comparebuf[0] != buf[0]) || (comparebuf[1] != buf[1])) printf("Turned green LED on\n\r");
brianh 0:181c1ea775ea 138 }
brianh 0:181c1ea775ea 139 else
brianh 0:181c1ea775ea 140 {
brianh 0:181c1ea775ea 141 ledg = 1;
brianh 0:181c1ea775ea 142 if ((comparebuf[0] != buf[0]) || (comparebuf[1] != buf[1])) printf("Turned green LED off\n\r");
brianh 0:181c1ea775ea 143 }
brianh 0:181c1ea775ea 144 }
brianh 0:181c1ea775ea 145 // is it blue?
brianh 0:181c1ea775ea 146 if(buf[0] == 'b')
brianh 0:181c1ea775ea 147 {
brianh 0:181c1ea775ea 148 if(buf[1] == '0')
brianh 0:181c1ea775ea 149 {
brianh 0:181c1ea775ea 150 ledb = 0;
brianh 0:181c1ea775ea 151 if ((comparebuf[0] != buf[0]) || (comparebuf[1] != buf[1])) printf("Turned blue LED on\n\r");
brianh 0:181c1ea775ea 152 }
brianh 0:181c1ea775ea 153 else
brianh 0:181c1ea775ea 154 {
brianh 0:181c1ea775ea 155 ledb = 1;
brianh 0:181c1ea775ea 156 if ((comparebuf[0] != buf[0]) || (comparebuf[1] != buf[1])) printf("Turned blue LED off\n\r");
brianh 0:181c1ea775ea 157 }
brianh 0:181c1ea775ea 158 }
brianh 0:181c1ea775ea 159 comparebuf[0] = buf[0];
brianh 0:181c1ea775ea 160 comparebuf[1] = buf[1];
brianh 0:181c1ea775ea 161
brianh 0:181c1ea775ea 162 }
brianh 0:181c1ea775ea 163 //pb = sw;
brianh 0:181c1ea775ea 164 }
brianh 0:181c1ea775ea 165 else
brianh 0:181c1ea775ea 166 {
brianh 0:181c1ea775ea 167 printf("trying to make websocket connection\n\r");
brianh 0:181c1ea775ea 168 ws.close();
brianh 0:181c1ea775ea 169 ws.connect();
brianh 0:181c1ea775ea 170 //wait(1.0);
brianh 0:181c1ea775ea 171 }
brianh 0:181c1ea775ea 172 }// end while
brianh 0:181c1ea775ea 173 //ws.close();
brianh 0:181c1ea775ea 174 //eth.disconnect();
brianh 0:181c1ea775ea 175 //ledg = 1;
brianh 0:181c1ea775ea 176 //ledr = 1;
brianh 0:181c1ea775ea 177 //ledb = 1;
brianh 0:181c1ea775ea 178 //while(1)
brianh 0:181c1ea775ea 179 //{
brianh 0:181c1ea775ea 180 //}
brianh 0:181c1ea775ea 181 }