Diff: main.cpp

Revision:

1:7fff8f0dce62

Parent:

0:e5aa1648b1c5

--- a/main.cpp	Wed Jun 15 14:58:38 2016 +0000
+++ b/main.cpp	Fri Jun 17 15:35:04 2016 +0000
@@ -1,18 +1,266 @@
-#include "mbed.h"
+/* Simpler prog based on the serial passthrough code to enable a command line driven test of esp8266
+* wifi modules.
+* NB this uses the mbed sleep() command to form a low power system but on some MCUs this is a problem
+* this works fine on an lpc1768 but not as yet on the KL25Z
+*/
 
-DigitalOut myled(LED1);
+#include "mbed.h"
+#include "DS1820.h"
+
 Serial pc(USBTX, USBRX); // serial terminal for the pc connection
 Serial dev(PTE0,PTE1);  // for KL25Z... asuming one can't use the PTA1 version which is the stdio
+DigitalOut led1(LED1); // two leds
+DigitalOut led2(LED2); // to allow visual check of bidirectional comms
+DigitalOut led3(LED3); //third led to check status of loading
+DigitalOut rst(PTD7); // single digital pin to drive the esp8266 reset line
+
+
+PwmOut Lights(PTE31); // Output to the lighting system
+AnalogIn V1(PTB0);    // Input from the LDR voltage level telling us brightness information
+
+const int MAX_PROBES = 1;
+DS1820* probe[MAX_PROBES];
+DigitalOut fan(PTB11);
+
+bool AUTO = false;      //Sets whether we are sending data to the server or not
+float Temp = 0;
+int Dummy = 0;
+float intensity = 0;
+int LightStatus = 0;
+int START = 0;
+
+// subroutine to run anytime a serial interrupt arrives from the device
+// this basically passes everything thatthe device produces on to the pc terminal screen
+/*void dev_recv()
+{
+
+    led1 = !led1;
+    while(dev.readable()) {
+        pc.putc(dev.getc());
+
+    }
+}*/
+// subroutine to service the serial interrupt on the pc connection
+// this is a bit more complex - it takes what the use sends on the pc and copies it on to the device
+// the esp should echo these straight back to the the pc if all is well
+// this also detects the end of command character which is ascii 13 (0x0d) adn adds a linefeed after it =asscii 10 (0x0a)
+/*void pc_recv()
+{
+    char c;
+    led2 = !led2;
+    while(pc.readable()) {
+        c = pc.getc();
+        dev.putc(c);
+        //   pc.putc(c); // echo back
+        if(c==13) {
+            dev.putc(10); // send the linefeed to complement the carriage return generated by return key on the pc
+            pc.putc(10);
+        }
+    }
+}
+*/
+void NEWMESSAGE()
+{
+    char message;
+    pc.putc('#');
+    while (dev.readable()) {
+        message= (char)dev.getc();
+        pc.putc(message);
+        if(message==':') {
+            message= (char)dev.getc();
+            break;
+        }
+    }
+    if(message == 'G') {
+        START = 1;
+    }
+    if(message == 'Q') {
+        AUTO=!AUTO;
+        pc.printf("AUTO=!AUTO\r\n",AUTO);
+        pc.putc(message);
+    }
+    if(message == 'K') {
+        fan = 1;
+        pc.putc(message);
+    }
+    if(message == 'L') {
+        fan = 0;
+        pc.putc(message);
+    }
+    if(message == 'Z') {
+        Lights = 0;
+        LightStatus = 0;
+        pc.putc(message);
+    }
+    if(message == 'X') {
+        Lights = 0.1;
+        LightStatus = 1;
+        pc.putc(message);
+    }
+    if(message == 'Y') {
+        Lights = 0.5;
+        LightStatus = 2;
+        pc.putc(message);
+    }
+    if(message == 'W') {
+        Lights = 1;
+        LightStatus = 3;
+        pc.putc(message);
+    }
+}
+
 int main()
 {
     pc.baud(115200);
-//   dev.baud(115200);
+    dev.baud(115200);
+    printf("Start \r\n");
+    rst=0;
+    wait(3);
+    rst = 1; // send the esp8266 reset
+    wait(1);
+
 
-    printf("Hello...\r\n");
+    // pc.attach(&pc_recv, Serial::RxIrq); // attach the two interrupt services
+    // dev.attach(&dev_recv, Serial::RxIrq);
+    wait(5);
+    dev.printf("AT+RST\r\n");
+    wait(10);
+    dev.printf("AT+CWJAP=\"BTHub3-WXWX\",\"fdd6f7c682\"\r\n"); //Don't necessarily need this line as it already should connect
+    wait(10);
+    dev.printf("AT+CIPMUX=1\r\n");
+    wait(1);
+    dev.printf("AT+CIPSTART=4,\"TCP\",\"192.168.1.95\",333\r\n");
+    wait(2);
+    /*dev.printf("AT+CIPSEND=4,4\r\n");
+    wait(1);
+    dev.printf("TEST\r\n");
+    wait(1);*/
+
+    dev.attach(&NEWMESSAGE);        //Interrupts and tells us to carry on sending data or not
+
+
+
+
+
     while(1) {
-        myled = 1;
-        wait(1.2);
-        myled = 0;
-        wait(0.2);
+        if(START == 0) {
+            Dummy = 1 - Dummy;
+            //pc.printf("Off");
+        }
+
+        else if(START == 1) {
+            pc.printf("Start = 1\r\n");
+
+            if(AUTO) {//***************AUTOMATIC MODE***********************//
+
+                pc.printf("AUTO\r\n");
+                //Code which reads temperature and sets fan on/off accordingly
+                int i;
+                int devices_found=0;
+                // Initialize the probe array to DS1820 objects
+                for (i = 0; i < MAX_PROBES; i++)
+                    probe[i] = new DS1820(D0);
+                // Initialize global state variables
+                probe[0]->search_Rom_setup();
+                // Loop to find all devices on the data line
+                while (probe[devices_found]->search_Rom() and devices_found<MAX_PROBES-1)
+                    devices_found++;
+                // If maximum number of probes are found,
+                // bump the counter to include the last array entry
+                if (probe[devices_found]->Rom[0] != 0xFF)
+                    devices_found++;
+
+                if (devices_found==0)
+                    printf("No devices found");
+                else {
+
+                    probe[0]->convert_temperature(DS1820::all_devices);
+                    for (i=0; i<devices_found; i++) {
+                        Temp = probe[i]->temperature('c');
+                        if(Temp>27) {
+                            fan = 1;
+                        } else {
+                            fan = 0;
+                        }
+                    }
+                }
+
+
+
+                // Code reads a voltage from an LDR and sets brightness of inside lighting accordingly
+
+                float v = 3.3*V1.read();
+
+                if(v<1) {
+                    intensity = 0.1;
+                    LightStatus = 1;
+                } else if(v<1.6) {
+                    intensity = 0.5;
+                    LightStatus = 2;
+                } else if(v<2.2) {
+                    intensity = 1;
+                    LightStatus = 3;
+                } else {
+                    intensity = 0;
+                    LightStatus = 0;
+                }
+                Lights = intensity;
+
+                pc.printf("reached here");
+
+
+                // if(AUTO) { //This is here to make sure that we're still on AutoMode before sending back data
+                pc.printf("ALights = %d\r\n",LightStatus);
+                pc.printf("ATemp = %3.1f\r\n",Temp);
+                pc.printf("AFan = %d\r\n",fan.read());
+       
+                char msg[80];
+                sprintf(msg,"Temp %3.1f\r\nFan %d\r\nLights %d\r\n",Temp,fan.read(),LightStatus);
+                 dev.printf("AT+CIPSEND=4,%d\r\n",strlen(msg));
+                wait(0.2);
+                dev.printf("%s",msg);
+                wait(5);
+                // }
+
+
+            } else { //***********************MANUAL MODE**************************//
+                Dummy = 1-Dummy;
+                pc.printf("MANUAL\r\n");
+
+                int i;
+                int devices_found=0;
+                // Initialize the probe array to DS1820 objects
+                for (i = 0; i < MAX_PROBES; i++)
+                    probe[i] = new DS1820(D0);
+                // Initialize global state variables
+                probe[0]->search_Rom_setup();
+                // Loop to find all devices on the data line
+                while (probe[devices_found]->search_Rom() and devices_found<MAX_PROBES-1)
+                    devices_found++;
+                // If maximum number of probes are found,
+                // bump the counter to include the last array entry
+                if (probe[devices_found]->Rom[0] != 0xFF)
+                    devices_found++;
+                if (devices_found==0)
+                    printf("No devices found");
+                else {
+                    probe[0]->convert_temperature(DS1820::all_devices);
+                    for (i=0; i<devices_found; i++) {
+                        Temp = probe[i]->temperature('c');
+                    }
+                }
+                pc.printf("mLights = %d\r\n",LightStatus);
+                pc.printf("mTemp = %3.1f\r\n",Temp);
+                pc.printf("mFan = %d\r\n",fan.read());
+       
+                char msg[80];
+                sprintf(msg,"Temp %3.1f\r\nFan %d\r\nLights %d\r\n",Temp,fan.read(),LightStatus);
+                 dev.printf("AT+CIPSEND=4,%d\r\n",strlen(msg));
+                wait(0.2);
+                dev.printf("%s",msg);
+                wait(5);
+            }
+        }
+
     }
-}
+}
\ No newline at end of file