Diff: wifi.cpp

Revision:

6:50a82641d07b

Child:

25:2e95a5731412

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wifi.cpp	Mon Apr 18 17:51:33 2016 +0000
@@ -0,0 +1,177 @@
+#include "wifi.h"
+
+Serial esp(p28, p27); // tx, rx
+
+Timer t;
+int count,ended,timeout;
+
+char ssid[32] = "fishes";     // enter WiFi router ssid inside the quotes
+char pwd [32] = "1Fishesonfire23"; // enter WiFi router password inside the quotes
+char buf[2024];
+char snd[1024];
+
+// Private Functions
+void SendCMD()
+{
+    //pc.printf("%s", snd);
+    esp.printf("%s", snd);
+}
+
+void flush(){
+ while(esp.readable()) {
+        char tmp = esp.getc();
+        //data += tmp;
+        //pc.putc(tmp);
+ }
+}
+
+void getreply()
+{
+    memset(buf, '\0', sizeof(buf));
+    t.start();
+    ended=0;
+    count=0;
+    while(!ended) {
+        if(esp.readable()) {
+            buf[count] = esp.getc();
+            count++;
+        }
+        if(t.read() > timeout) {
+            ended = 1;
+            t.stop();
+            t.reset();
+        }
+    }
+}
+
+void ESPsetbaudrate()
+{
+    strcpy(snd, "uart.setup(0, 9600, 8, 0, 1, 0)\r\n");   // change the numeric value to the required baudrate
+    SendCMD();
+    timeout=2;
+    getreply();
+    //pc.printf(buf);
+}
+
+
+// Public Functions
+
+
+void setup_wifi()
+{
+    //pc.printf("---------- Reset & get Firmware ----------\r\n");
+    strcpy(snd,"node.restart()\r\n");
+    SendCMD();
+    timeout=2;
+    getreply();
+    //pc.printf(buf);
+    
+    ESPsetbaudrate();
+    
+    
+    //pc.printf("\n---------- Connecting to AP ----------\r\n");
+    //pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
+    strcpy(snd, "wifi.sta.config(\"");
+    strcat(snd, ssid);
+    strcat(snd, "\",\"");
+    strcat(snd, pwd);
+    strcat(snd, "\")\r\n");
+    SendCMD();
+    timeout=3;
+    getreply();
+    //pc.printf(buf);
+ 
+    wait(5);
+ /*
+    pc.printf("\n---------- Get IP's ----------\r\n");
+    strcpy(snd, "print(wifi.sta.getip())\r\n");
+    SendCMD();
+    timeout=2;
+    getreply();
+    pc.printf(buf);
+ 
+    wait(1);
+ 
+    pc.printf("\n---------- Get Connection Status ----------\r\n");
+    strcpy(snd, "print(wifi.sta.status())\r\n");
+    pc.printf("%s", snd);
+    SendCMD();
+    timeout=2;
+    getreply();
+    pc.printf(buf);
+  */  
+    
+}
+
+void setup_ntp(){
+    strcpy(snd, "timezone = -4\r\n");
+        SendCMD();
+        wait(2);
+    strcpy(snd, "request=string.char(227,0,6,236,0,0,0,0,0,0,0,0,49,78,49,52,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)\r\n");
+        SendCMD();
+        wait(4);
+    
+    strcpy(snd, "time = 0\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "sk=net.createConnection(net.UDP, 0)\r\n");
+        SendCMD();
+        wait(1);
+  
+    strcpy(snd, "sk:on(\"receive\", function(sck, payload)\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "local highw,loww,ntpstamp\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "highw = payload:byte(41) * 256 + payload:byte(42)\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "loww = payload:byte(43) * 256 + payload:byte(44)\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "ntpstamp=( highw * 65536 + loww ) + ( timezone* 3600)\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "time = ntpstamp - 1104494400 - 1104494400\r\n");
+        SendCMD();
+        wait(1);
+    strcpy(snd, "print(time)\r\n");
+        SendCMD();
+        wait(1);
+ 
+    strcpy(snd, "sck:close()\r\n");
+        SendCMD();
+        wait(1);
+ 
+    strcpy(snd, "end )\r\n");
+        SendCMD();
+        wait(1);
+ 
+    flush();       
+    wait(5);
+}
+
+void update_ntp(){
+    flush();
+    strcpy(snd, "sk:connect(123,\"104.232.3.3\")\r\n");
+        SendCMD();
+        wait(3);
+    strcpy(snd, "sk:send(request)\r\n");
+        SendCMD();
+        wait(4);
+    
+    flush();
+    
+    strcpy(snd, "print(time)\r\n");
+        SendCMD();
+        wait(1);
+    timeout=5;
+    getreply();
+    //pc.printf(buf);
+    int utime = atoi(buf);
+    if(utime != NULL)
+        set_time(utime);
+    time_t seconds = time(NULL);
+    //pc.printf("Time as a basic string = %s", ctime(&seconds));
+}
\ No newline at end of file