Diff: main.cpp

Revision:

3:7410e3231e7a

Parent:

1:40027344b249

--- a/main.cpp	Sat Feb 22 13:25:44 2014 +0000
+++ b/main.cpp	Wed Nov 26 14:02:36 2014 +0000
@@ -68,10 +68,13 @@
 // Library to drive the LED strip
 #include "Adafruit_WS2801.h"
 
-// Some local defines
 
+// Some local defines
 #define SERIAL_BAUD_RATE    115200
 
+#define NUM_PIXELS 50
+#define NUM_COL_HISTORY 5
+
 #define WIGO           1
 #define WIFI_DIPCORTEX 2
 #define UNDEFINED      3
@@ -80,9 +83,9 @@
 
 using namespace mbed_cc3000;
 
-// LED to indicate smart config is running
+// LED to indicate SmartConfig is running
 DigitalOut LedSC(P0_1);
-//
+// Button to hold down during reset to enter SmartConfig mode
 DigitalIn SCButton(P1_31);
 
 // For Bit-Banging SPI use Pins 40 and 39
@@ -103,9 +106,9 @@
 #endif
 
 #ifndef CC3000_UNENCRYPTED_SMART_CONFIG
-const uint8_t smartconfigkey[] = {0x73,0x6d,0x61,0x72,0x74,0x63,0x6f,0x6e,0x66,0x69,0x67,0x41,0x45,0x53,0x31,0x36};
+//const uint8_t smartconfigkey[] = {0x73,0x6d,0x61,0x72,0x74,0x63,0x6f,0x6e,0x66,0x69,0x67,0x41,0x45,0x53,0x31,0x36};
 #else
-const uint8_t smartconfigkey = 0;
+//const uint8_t smartconfigkey = 0;
 #endif
 
 tNetappIpconfigRetArgs ipinfo;
@@ -116,14 +119,12 @@
 char _deviceName[] = "CC3000";
 
 HTTPClient http;
-//char str[128];
-uint32_t lastColour = 0;
 
 // Set the first variable to the number of rows, the second to number of pixels. 32 = 32 pixels in a row
-Adafruit_WS2801 strip = Adafruit_WS2801(32, dataPin, clockPin);
+Adafruit_WS2801 strip = Adafruit_WS2801(NUM_PIXELS, dataPin, clockPin);
 
 // Setup the colour table and mappings
-#define NUM_COLOURS 12
+#define NUM_COLOURS 13
 struct ColourTable {
     char name[12];
     uint32_t value;
@@ -139,11 +140,10 @@
     { "yellow",    0xffff00 },
     { "orange",    0xffa500 },
     { "pink",      0xff69b4 },
-    { "oldlace",   0xfd5e56 }
+    { "oldlace",   0xfd5e56 },
+    { "black",     0x000000 }
 };
 
-
-
 /** Get status of WiFi connection
  * displays and returns value
  */
@@ -201,25 +201,24 @@
 }
 
 
-/** Convert name to colour
+/** Convert name to colour and set it on LEDs. With colour history, strip will be
+ * changing colour for every new colour detected producing an almost random effect
+ * @param colNum Number of the received colour, starts 0 to NUM_COL_HISTORY with highest being latest colour
  * @param colStr Received colour name
  */
-void setColour( char *colStr )
+void setColour( int colNum, char *colStr )
 {
 //    uart.printf("received %s\r\n",colStr);
 
     for( int i=0; i < NUM_COLOURS; i++ ) {
         if( strncmp( colTable[i].name, colStr, strlen(colTable[i].name) ) == 0 ) {
-            if( colTable[i].value != lastColour ) {
-                for (int n=0; n < strip.numPixels(); n++) {
-                    strip.setPixelColor(n, colTable[i].value);
-                    strip.show();
-                    wait_ms(100);
-                }
-                lastColour = colTable[i].value;
-            } else {
-                uart.printf("Same as previous colour\r\n");
+            for (int n=colNum; n < strip.numPixels()+NUM_COL_HISTORY; n += NUM_COL_HISTORY) {
+                strip.setPixelColor(n, colTable[i].value);
             }
+            // Update strip after colour has been set
+            strip.show();
+            // Slight pause 
+            wait_ms(250);
             return;
         }
     }
@@ -227,25 +226,42 @@
 
 }
 
+#define CL_BUFFSIZE 1024
 /** Read Cheerlights colour
  * Use http call to get last Cheerlights colour
  */
 void readCheerlight( void )
 {
-    char str[128];
+    char responseStr[CL_BUFFSIZE];
     //GET data
     uart.printf("\r\nTrying to fetch page...\r\n");
-    int ret = http.get("http://api.thingspeak.com/channels/1417/field/1/last.txt", str, 128);
-    // Just a local test url, saves having to tweet the cheerlights colour every time
-//    int ret = http.get("http://192.168.1.3/last.txt", str, 128);
+    int ret = http.get("http://api.thingspeak.com/channels/1417/feed.csv?results=5", responseStr, CL_BUFFSIZE);
     if (!ret) {
-        uart.printf("Page fetched successfully - read %d characters\r\n", strlen(str));
-        uart.printf("Result: %s\r\n", str);
-        setColour( str );
+        uart.printf("Page fetched successfully - read %d characters\r\n", strlen(responseStr));
+        //uart.printf("Result: %s\r\n", responseStr);
+        // Parse CSV and set colours
+        // Get a line
+        char *ptr = responseStr;
+        // Skip header line
+        while(*ptr++ != 0x0a ); // Header
+        // 5 colours
+        for( int i=0; i<5; i++ ) {
+            while(*ptr++ != ',');   // Column 1 - Date, Skip
+            while(*ptr++ != ',');   // Column 2 - ID, Skip
+            char col[10];
+            char *cPtr = col;
+            while( *ptr != 0x0a ) { // Column 3 - colour
+                *cPtr++ = *ptr++;
+            }
+            *cPtr = '\0';
+            uart.printf("%d %s\r\n",i,col);
+            setColour( i, col );
+        }
     } else {
         uart.printf("Error - ret = %d - HTTP return code = %d\r\n", ret, http.getHTTPResponseCode());
     }
 
+    uart.printf("End of readCheerlights\n\r");
 }
 
 
@@ -266,9 +282,8 @@
     LPC_SYSCON->SYSAHBCLKCTRL |= (0x1 << 26);
 
     uart.baud(SERIAL_BAUD_RATE);
-    
+
     strip.updatePins();    // Switch to Hardware SPI
-
     strip.begin();
 
     // Update LED contents, to start they are all 'off'
@@ -307,11 +322,14 @@
         uart.printf("Back from SmartConfig\r\n");
 
         wait(2);    // for dhcp to configure
-
+// TODO: Add this into start_smart_config
         if ( wifi.is_dhcp_configured() ) {
             if (!Connected) {
                 // We have just connected
                 Connected = true;
+                // This might need calling for mdsn advertiser to work.
+                //   uint32_t ip_addr[4] = {0,0,0,0};
+                //   wifi._socket.gethostbyname((uint8_t *)_deviceName, strlen(_deviceName), uint32_t *ip_addr);
 
                 // Start the mdns service, this tells any smart config apps listening we have succeeded
                 wifi._socket.mdns_advertiser(1, (uint8_t *)_deviceName, strlen(_deviceName));
@@ -330,18 +348,21 @@
 
     LedSC = 0;
     print_cc3000_info();
-    
-    // Check if we're connected to WiFi and have an IP address, if not then just flash LED
+
+    // Check if we're connected to WiFi and have an IP address, if not then just flash LED until reset
     uint32_t status = getWiFiStatus();
     if( status != 3 || !wifi.is_dhcp_configured() ) {
         while( 1 ) {
             LedSC = !LedSC;
             wait_ms(500);
-        }    
+        }
     }
 
     while (1) {
-        getWiFiStatus();
+        if( getWiFiStatus() == 0 ) {
+            // Not connected, attempt reconnect
+            ;
+        }
         readCheerlight();
         // Pause for a minute before checking again
         wait(60);