Revision 1:57e06832197a, committed 2017-05-03

Comitter:

ooglezoiden

Date:

Wed May 03 15:05:12 2017 +0000

Parent:

0:397faf7a0a52

Commit message:

added Alexa support

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RPCInterface.lib	Wed May 03 15:05:12 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/MichaelW/code/RPCInterface/#bcc2e05e5da4

--- a/main.cpp	Thu Mar 16 19:38:55 2017 +0000
+++ b/main.cpp	Wed May 03 15:05:12 2017 +0000
@@ -1,32 +1,104 @@
 #include "mbed.h"
 #include "uLCD_4DGL.h"
 #include "DebounceIn.h"
+#include "mywifi.h"
+#include "mbed_rpc.h"
 
 Timeout alarm;
 Timer t;
-PwmOut lights(p25);
+PwmOut lights(p24);
 uLCD_4DGL uLCD(p9,p10,p11);
 AnalogIn photocell(p15);
 DebounceIn pb1(p8);
 DebounceIn pb2(p7);
-Serial blue(p28,p27);
+DebounceIn pb3(p6);
+Serial blue(p13,p14);
+
+Serial pc(USBTX, USBRX);
+Serial esp(p28, p27);
+char ssid[32] = "Hotspot";
+char pwd[32] = "1234567890";
+char port[32] = "1035"; // must be port forwarded
+char timeout[32] = "28800"; // 28800 is max
+volatile int tx_in=0;
+volatile int tx_out=0;
+volatile int rx_in=0;
+volatile int rx_out=0;
+const int buffer_size = 4095;
+char tx_buffer[buffer_size+1];
+char rx_buffer[buffer_size+1];
+char cmdbuff[1024];
+char rx_line[1024];
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
 
 
-void lightsOn(){
+// ---------------- Light Functions For Alexa ------------------
+
+
+
+void alexaLightsOn(Arguments *in, Reply *out){
     uLCD.cls();
     uLCD.printf("Turning on lights!");
     //lights = 1;
     while(lights<=0.99f){
         lights = lights + .01f;
-        wait(1);
+        wait_ms(100);
+    }
+    while(1);//do nothing until reset
+}
+
+void alexaLightsOff(Arguments *in, Reply *out){
+    uLCD.cls();
+    uLCD.printf("Turning off lights!");
+    //lights = 1;
+    while(lights>=0.01f){
+        lights = lights - .01f;
+        wait_ms(100);
     }
     while(1);//do nothing until reset
 }
 
+void alexaDimLights(Arguments *in, Reply *out){
+    float level = in->getArg<float>();
+    uLCD.cls();
+    uLCD.printf("Dimming lights to %f percent.", level);
+    lights = level;
+}
+
+void lightsOn(){
+    uLCD.cls();
+    uLCD.printf("Turning on lights!");
+    lights = 1.0;
+    //while(lights<=0.99f){
+    //    lights = lights + 0.1f;
+    //    wait(1);
+    //}
+    while(1);//do nothing until reset
+}
+
+void alexaTimer(Arguments *in, Reply *out){
+    int time = in->getArg<int>();
+    alarm.attach(&lightsOn, time);
+    t.start();
+    float curTime;
+    while(1){
+        uLCD.cls();
+        curTime = t.read();
+        uLCD.printf("%f secs since alarm set.\n", curTime);
+    }
+}
+
+// --------------------- Modes ------------------------
+
+
+
 void lightMode(){
     uLCD.cls();
     uLCD.printf("not bright out yet!\n");
-    while(photocell.read() < .9f){
+    while(photocell.read() < .8f){
         uLCD.cls();
         uLCD.printf("not bright out yet!\n");
     }
@@ -108,15 +180,89 @@
     
 }
 
+void alexaMode(){
+    uLCD.cls();
+    uLCD.printf("Alexa mode started!\n");
+    pc.baud(9600);
+    esp.baud(9600);
+    esp.attach(&Rx_interrupt, Serial::RxIrq);
+    esp.attach(&Tx_interrupt, Serial::TxIrq);
+    wait(5);
+    connectToNetwork();
+    uLCD.printf("Connected to network!!\n");
+    wait(0.2);
+    char rpc_in[256];
+    char rpc_out[256];
+    while (1) {
+        getReply();
+        memset(&rpc_in[0], 0, sizeof(rpc_in));
+        memset(&rpc_out[0], 0, sizeof(rpc_out));
+        int length = (int)rx_line[3] - 48; // bytes 0 to 2 are trash; byte 3 is length of message
+        if (length > 0 && length < 256) {
+            for (int i = 0; i < length; i++) {
+                rpc_in[i] = rx_line[i+4]; // bytes 4 to length+3 are the valid data
+            }
+            RPC::call(rpc_in, rpc_out);
+            pc.printf("%s\n", rpc_out);
+        }
+        // lambda function is event-triggered and non-persistent
+        // after it terminates, we need to close the existing connection and start another one
+        strcpy(cmdbuff, "srv:close()\r\n"); 
+        sendCMD();
+        wait(.5);
+        getReply();
+        strcpy(cmdbuff, "srv=net.createServer(net.TCP,");
+        strcat(cmdbuff, timeout);
+        strcat(cmdbuff, ")\r\n");
+        sendCMD();
+        wait(.5);
+        getReply();
+        strcpy(cmdbuff, "srv:listen(");
+        strcat(cmdbuff, port);
+        strcat(cmdbuff, ",function(conn)\r\n");
+        sendCMD();
+        wait(.5);
+        getReply();
+        strcpy(cmdbuff, "conn:on(\"receive\", function(conn, payload) \r\n");
+        sendCMD();
+        wait(.5);
+        getReply();
+        strcpy(cmdbuff, "print(payload)\r\n");
+        sendCMD();
+        wait(.5);
+        getReply();
+        strcpy(cmdbuff, "end)\r\n");
+        sendCMD();
+        wait(.5);
+        getReply();
+        strcpy(cmdbuff, "end)\r\n");
+        sendCMD();
+        wait(.5);
+        getReply();
+    }
+}
+
+
+
+// --------------- Main Function ----------------------
+
+
+
 int main() {
     lights = 0;
-    uLCD.printf("LIGHT_ALARM V1.0 Donn Green\n\n");
+    uLCD.printf("LIGHT_ALARM V2.0 Donn Green\n\n");
     uLCD.printf("Press Button 1 to begin light activation mode\n");
     uLCD.printf("Press Button 2 to begin timer activation mode\n");
+    uLCD.printf("Press Button 3 to begin smart home mode\n");
     pb1.mode(PullDown);
     pb2.mode(PullDown);
+    pb3.mode(PullDown);
     lights.period(1.0f/25000.0f);
-    while(!(pb1||pb2)){
+    RPCFunction rpcOn(&alexaLightsOn, "turnOn");
+    RPCFunction rpcOff(&alexaLightsOff, "turnOff");
+    RPCFunction rpcDim(&alexaDimLights, "dim");
+    RPCFunction rpcSet(&alexaTimer, "set");
+    while(!(pb1||pb2||pb3)){
         //do nothing until a button is pressed
     }
     if(pb1){
@@ -126,4 +272,242 @@
         int time = getTime();
         timerMode(time);
     }
+    else if(pb3){
+        alexaMode();
+    }
 }
+
+
+
+// ------------ WIFI Functions ---------------------
+
+
+
+void connectToNetwork() {
+    pc.printf("# Resetting ESP\r\n");
+    uLCD.cls();
+    uLCD.printf("# Resetting ESP\r\n");
+    strcpy(cmdbuff,"node.restart()\r\n");
+    sendCMD();
+    wait(5);
+    getReply();
+
+    led1=1,led2=0,led3=0;
+    pc.printf("# Setting Mode\r\n");
+    uLCD.cls();
+    uLCD.printf("# Setting Mode\r\n");
+    strcpy(cmdbuff, "wifi.setmode(wifi.STATION)\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=0,led2=1,led3=0;
+    pc.printf("# Connecting to AP\r\n");
+    pc.printf("# ssid = %s\t\tpwd = %s\r\n", ssid, pwd);
+    uLCD.cls();
+    uLCD.printf("# ssid = %s\t\tpwd = %s\r\n");
+    strcpy(cmdbuff, "wifi.sta.config(\"");
+    strcat(cmdbuff, ssid);
+    strcat(cmdbuff, "\",\"");
+    strcat(cmdbuff, pwd);
+    strcat(cmdbuff, "\")\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=0,led2=0,led3=1;
+    pc.printf("# Get IP Address\r\n");
+    uLCD.cls();
+    uLCD.printf("# Get IP Address\r\n");
+    strcpy(cmdbuff, "print(wifi.sta.getip())\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=1,led2=0,led3=0;
+    pc.printf("# Get Connection Status\r\n");
+    uLCD.cls();
+    uLCD.printf("# Get Connection Status\r\n");
+    strcpy(cmdbuff, "print(wifi.sta.status())\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=0,led2=1,led3=0;
+    pc.printf("# Listen on Port\r\n");
+    uLCD.cls();
+    uLCD.printf("# Listen on Port\r\n");
+    strcpy(cmdbuff, "srv=net.createServer(net.TCP,");
+    strcat(cmdbuff, timeout);
+    strcat(cmdbuff, ")\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=0,led2=0,led3=1;
+    strcpy(cmdbuff, "srv:listen(");
+    strcat(cmdbuff, port);
+    strcat(cmdbuff, ",function(conn)\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=1,led2=0,led3=0;
+    strcpy(cmdbuff, "conn:on(\"receive\", function(conn, payload) \r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=0,led2=1,led3=0;
+    //strcpy(cmdbuff, "conn:send('");
+    //strcat(cmdbuff, reportStatus());
+    //strcat(cmdbuff, "')\r\n");
+    //sendCMD();
+    //getReply();
+
+    wait(2);
+    led1=0,led2=0,led3=1;
+    strcpy(cmdbuff, "print(payload)\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=1,led2=0,led3=0;
+    strcpy(cmdbuff, "end)\r\n");
+    sendCMD();
+    getReply();
+
+    wait(2);
+    led1=0,led2=1,led3=0;
+    strcpy(cmdbuff, "end)\r\n");
+    sendCMD();
+    getReply();
+
+    strcpy(cmdbuff, "tmr.alarm(0, 1000, 1, function()\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff, "if wifi.sta.getip() == nil then\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff, "print(\"Connecting to AP...\\n\")\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff, "else\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff, "ip, nm, gw=wifi.sta.getip()\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff,"print(\"IP Address: \",ip)\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff,"tmr.stop(0)\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff,"end\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    strcpy(cmdbuff,"end)\r\n");
+    sendCMD();
+    getReply();
+    wait(0.2);
+    
+    pc.printf("\n\n++++++++++ Ready ++++++++++\r\n\n");
+}
+
+void sendCMD()
+{
+    int i;
+    char temp_char;
+    bool empty;
+    i = 0;
+// Start Critical Section - don't interrupt while changing global buffer variables
+    NVIC_DisableIRQ(UART1_IRQn);
+    empty = (tx_in == tx_out);
+    while ((i==0) || (cmdbuff[i-1] != '\n')) {
+// Wait if buffer full
+        if (((tx_in + 1) % buffer_size) == tx_out) {
+// End Critical Section - need to let interrupt routine empty buffer by sending
+            NVIC_EnableIRQ(UART1_IRQn);
+            while (((tx_in + 1) % buffer_size) == tx_out) {
+            }
+// Start Critical Section - don't interrupt while changing global buffer variables
+            NVIC_DisableIRQ(UART1_IRQn);
+        }
+        tx_buffer[tx_in] = cmdbuff[i];
+        i++;
+        tx_in = (tx_in + 1) % buffer_size;
+    }
+    if (esp.writeable() && (empty)) {
+        temp_char = tx_buffer[tx_out];
+        tx_out = (tx_out + 1) % buffer_size;
+// Send first character to start tx interrupts, if stopped
+        esp.putc(temp_char);
+    }
+// End Critical Section
+    NVIC_EnableIRQ(UART1_IRQn);
+    return;
+}
+
+// Read a line from the large rx buffer from rx interrupt routine
+void getReply() {
+    int i;
+    i = 0;
+// Start Critical Section - don't interrupt while changing global buffer variables
+    NVIC_DisableIRQ(UART1_IRQn);
+// Loop reading rx buffer characters until end of line character
+    while ((i==0) || (rx_line[i-1] != '\r')) {
+// Wait if buffer empty
+        if (rx_in == rx_out) {
+// End Critical Section - need to allow rx interrupt to get new characters for buffer
+            NVIC_EnableIRQ(UART1_IRQn);
+            while (rx_in == rx_out) {
+            }
+// Start Critical Section - don't interrupt while changing global buffer variables
+            NVIC_DisableIRQ(UART1_IRQn);
+        }
+        rx_line[i] = rx_buffer[rx_out];
+        i++;
+        rx_out = (rx_out + 1) % buffer_size;
+    }
+// End Critical Section
+    NVIC_EnableIRQ(UART1_IRQn);
+    rx_line[i-1] = 0;
+    return;
+}
+
+// Interupt Routine to read in data from serial port
+void Rx_interrupt() {
+    //led3=1;
+// Loop just in case more than one character is in UART's receive FIFO buffer
+// Stop if buffer full
+    while ((esp.readable()) && (((rx_in + 1) % buffer_size) != rx_out)) {
+        rx_buffer[rx_in] = esp.getc();
+// Uncomment to Echo to USB serial to watch data flow
+        pc.putc(rx_buffer[rx_in]);
+        rx_in = (rx_in + 1) % buffer_size;
+    }
+    return;
+}
+
+
+// Interupt Routine to write out data to serial port
+void Tx_interrupt() {
+    //led2=1;
+// Loop to fill more than one character in UART's transmit FIFO buffer
+// Stop if buffer empty
+    while ((esp.writeable()) && (tx_in != tx_out)) {
+        esp.putc(tx_buffer[tx_out]);
+        tx_out = (tx_out + 1) % buffer_size;
+    }
+    //led2=0;
+    return;
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mywifi.h	Wed May 03 15:05:12 2017 +0000
@@ -0,0 +1,5 @@
+void Tx_interrupt();
+void Rx_interrupt();
+void sendCMD();
+void getReply();
+void connectToNetwork();
\ No newline at end of file