Eli Hughes / Mbed 2 deprecated MonkeyDo

HIT Project #3 https://community.freescale.com/docs/DOC-99621

Dependencies:   EthernetInterface WebSocketClient mbed-rtos mbed

MonkeyDo!

/media/uploads/emh203/monkey-20plug2.png

These are the demo files for Freescale HIT project #3: Monkey Do. It uses a FRDM-AUTO + a FRDM-K64F to demo websockets for a simple IoT application.

See the main MonkeyDo page for all of the schematics, videos, GitHub links, etc for everything else!

https://community.freescale.com/docs/DOC-99621

main.cpp@1:d87a428e88ee, 2014-07-17 (annotated)

Committer:
emh203
Date:
Thu Jul 17 00:18:36 2014 +0000
Revision:
1:d87a428e88ee
Parent:
0:29f58b9daa2c 
Version for 1st project release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emh203 0:29f58b9daa2c 1 #include "System.h"
emh203 0:29f58b9daa2c 2
emh203 0:29f58b9daa2c 3 char StringBuffer[256];
emh203 0:29f58b9daa2c 4
emh203 0:29f58b9daa2c 5 #define TEMPERATURE_FILTER_SIZE 16
emh203 0:29f58b9daa2c 6
emh203 0:29f58b9daa2c 7 float TemperatureFilterBuffer[TEMPERATURE_FILTER_SIZE] = {0};
emh203 0:29f58b9daa2c 8
emh203 0:29f58b9daa2c 9 uint32_t TemperatureFilterIndex = 0;
emh203 0:29f58b9daa2c 10
emh203 0:29f58b9daa2c 11 float Temperature = 0;
emh203 0:29f58b9daa2c 12
emh203 0:29f58b9daa2c 13 Ticker SystemTicker;
emh203 0:29f58b9daa2c 14
emh203 0:29f58b9daa2c 15 volatile uint32_t SensorUpdateTicker = 0;
emh203 0:29f58b9daa2c 16
emh203 0:29f58b9daa2c 17 //This is used for some general purpose timing in the main loop
emh203 0:29f58b9daa2c 18 void SystemTick()
emh203 0:29f58b9daa2c 19 {
emh203 0:29f58b9daa2c 20 if(SensorUpdateTicker < 0xFFFFFFFF)
emh203 0:29f58b9daa2c 21 SensorUpdateTicker++;
emh203 0:29f58b9daa2c 22 }
emh203 0:29f58b9daa2c 23
emh203 0:29f58b9daa2c 24 int main()
emh203 0:29f58b9daa2c 25 {
emh203 0:29f58b9daa2c 26 uint32_t i;
emh203 0:29f58b9daa2c 27
emh203 0:29f58b9daa2c 28 DISABLE_HIGH_CURRENT_RELAY;
emh203 0:29f58b9daa2c 29 DISABLE_LOW_CURRENT_RELAY;
emh203 0:29f58b9daa2c 30
emh203 0:29f58b9daa2c 31 InitTerminal(); //Initialize the Terminal State machine
emh203 0:29f58b9daa2c 32
emh203 0:29f58b9daa2c 33 //Setup ouur ticker for 1mS
emh203 0:29f58b9daa2c 34 SystemTicker.attach_us(SystemTick,1000);
emh203 0:29f58b9daa2c 35
emh203 0:29f58b9daa2c 36 PC.printf("\r\n\r\nMonkey Do!\r\n");
emh203 0:29f58b9daa2c 37
emh203 0:29f58b9daa2c 38
emh203 0:29f58b9daa2c 39 PC.printf("Ethernet Init!\r\n");
emh203 0:29f58b9daa2c 40 eth.init(); //Use DHCP
emh203 0:29f58b9daa2c 41 eth.connect();
emh203 0:29f58b9daa2c 42 PC.printf("IP Address is %s\r\n", eth.getIPAddress());
emh203 0:29f58b9daa2c 43
emh203 0:29f58b9daa2c 44 Websocket ws("ws://sockets.mbed.org:443/ws/emh203/rw");
emh203 0:29f58b9daa2c 45
emh203 0:29f58b9daa2c 46 ws.connect();
emh203 0:29f58b9daa2c 47
emh203 0:29f58b9daa2c 48 while (1) {
emh203 0:29f58b9daa2c 49
emh203 0:29f58b9daa2c 50 //Send sensor data to the websocket every second
emh203 0:29f58b9daa2c 51 if(SensorUpdateTicker >= 1000)
emh203 0:29f58b9daa2c 52 {
emh203 0:29f58b9daa2c 53 SensorUpdateTicker = 0;
emh203 0:29f58b9daa2c 54
emh203 0:29f58b9daa2c 55 Temperature = 0;
emh203 0:29f58b9daa2c 56
emh203 0:29f58b9daa2c 57 //Take a bunch of measurements and average to help with Data converter Noise
emh203 0:29f58b9daa2c 58
emh203 0:29f58b9daa2c 59 for(i=0;i<TEMPERATURE_FILTER_SIZE;i++)
emh203 0:29f58b9daa2c 60 {
emh203 1:d87a428e88ee 61 Temperature += ((TempSensor.read() * 3.3f)// * //convert to volts
emh203 1:d87a428e88ee 62 - 0.500f) // subtract off 0c offset .... you may need to calibrate... see MCP9700A-E/TO data sheet
emh203 1:d87a428e88ee 63 * 100.0f; // Scale to Degrees C
emh203 0:29f58b9daa2c 64 }
emh203 0:29f58b9daa2c 65 Temperature = Temperature / TEMPERATURE_FILTER_SIZE;
emh203 0:29f58b9daa2c 66
emh203 0:29f58b9daa2c 67 sprintf(StringBuffer,"temp %.1f\r\n",Temperature);
emh203 0:29f58b9daa2c 68 ws.send(StringBuffer);
emh203 0:29f58b9daa2c 69 }
emh203 0:29f58b9daa2c 70
emh203 0:29f58b9daa2c 71 //See if we have an incoming command, if so process it
emh203 0:29f58b9daa2c 72 if(ws.read(StringBuffer) == true)
emh203 0:29f58b9daa2c 73 {
emh203 0:29f58b9daa2c 74 //our command structure is a simple ascii string.
emh203 0:29f58b9daa2c 75 //
emh203 0:29f58b9daa2c 76 //Cmd arg1 arg2 .....
emh203 0:29f58b9daa2c 77 //
emh203 0:29f58b9daa2c 78 //The command is the 1st string. Each argument is separated by white space
emh203 0:29f58b9daa2c 79 //
emh203 0:29f58b9daa2c 80 //for example:
emh203 0:29f58b9daa2c 81 //
emh203 0:29f58b9daa2c 82 //ssr 1 0
emh203 0:29f58b9daa2c 83 //
emh203 0:29f58b9daa2c 84 //is the "ssr" command with 2 arguments: 1 and 0
emh203 0:29f58b9daa2c 85 //
emh203 0:29f58b9daa2c 86 //
emh203 0:29f58b9daa2c 87 //There are many ways to process a command but I will use my "Terminal" processor
emh203 0:29f58b9daa2c 88 //It normally is used to emulated a basic command line terminal from a serial port but it
emh203 0:29f58b9daa2c 89 //can easily process ourwebsocket data.
emh203 0:29f58b9daa2c 90 //
emh203 0:29f58b9daa2c 91 //
emh203 0:29f58b9daa2c 92
emh203 0:29f58b9daa2c 93
emh203 0:29f58b9daa2c 94
emh203 0:29f58b9daa2c 95 //see if this is the command we sent out. The Mbed Websocket server sends input messagest
emh203 0:29f58b9daa2c 96 //to all who are attached. This means we get our own messages back.
emh203 0:29f58b9daa2c 97
emh203 0:29f58b9daa2c 98 if(strncmp(StringBuffer,"temp",4) == 0)
emh203 0:29f58b9daa2c 99 {
emh203 0:29f58b9daa2c 100 //this means we go the temp message back, do nothing
emh203 0:29f58b9daa2c 101 }
emh203 0:29f58b9daa2c 102 else
emh203 0:29f58b9daa2c 103 {
emh203 0:29f58b9daa2c 104 //The first thing to do is copy the data into the terminal input queue
emh203 0:29f58b9daa2c 105 ByteArrayEnqueue(&TERMINAL_INPUT_QUEUE,(uint8_t *)StringBuffer,strlen(StringBuffer));
emh203 0:29f58b9daa2c 106 //We also need a put in a new line character so the terminal will think a new command has been entered
emh203 0:29f58b9daa2c 107 ByteEnqueue(&TERMINAL_INPUT_QUEUE,'\r');
emh203 0:29f58b9daa2c 108 }
emh203 0:29f58b9daa2c 109
emh203 0:29f58b9daa2c 110 //Now that the data is in the terminal input queue, the ProcessTerminal() function will do the rest
emh203 0:29f58b9daa2c 111 }
emh203 0:29f58b9daa2c 112
emh203 0:29f58b9daa2c 113 //This will process any incoming data to the terminal
emh203 0:29f58b9daa2c 114 ProcessTerminal();
emh203 0:29f58b9daa2c 115
emh203 0:29f58b9daa2c 116 //In addition to the websocket interface, we will also have a simple virtual command line terminal over the USB virtual com port.
emh203 0:29f58b9daa2c 117 //As of 2014-06-24 the Serial IRQ routines are not function in the mbed libraries for the FRDM-K64. For the mean time
emh203 0:29f58b9daa2c 118 //We will just manually shuffle data in and out of the terminal queues. The baud rate is slow enough in that the main loop will have plenty of time to
emh203 0:29f58b9daa2c 119 //move everything. Ideally I would want interrupts to keep everything flowing but this will be good enough for now.
emh203 0:29f58b9daa2c 120
emh203 0:29f58b9daa2c 121
emh203 0:29f58b9daa2c 122 if(PC.readable()) {
emh203 0:29f58b9daa2c 123 ByteEnqueue(&TERMINAL_INPUT_QUEUE,PC.getc());
emh203 0:29f58b9daa2c 124 }
emh203 0:29f58b9daa2c 125 if(BytesInQueue(&TERMINAL_OUTPUT_QUEUE)>0) {
emh203 0:29f58b9daa2c 126 if(PC.writeable()) {
emh203 0:29f58b9daa2c 127 PC.putc(ForcedByteDequeue(&TERMINAL_OUTPUT_QUEUE));
emh203 0:29f58b9daa2c 128 }
emh203 0:29f58b9daa2c 129 }
emh203 0:29f58b9daa2c 130
emh203 0:29f58b9daa2c 131 }
emh203 0:29f58b9daa2c 132
emh203 0:29f58b9daa2c 133
emh203 0:29f58b9daa2c 134
emh203 0:29f58b9daa2c 135 }
emh203 0:29f58b9daa2c 136
emh203 0:29f58b9daa2c 137
emh203 0:29f58b9daa2c 138