WIFI CC3000 Module Breakout

Transcription

1 WIFI CC3000 Module Breakout This is a breakout board for the CC3000 WiFi Module from TI (Texas Instruments). It is a self-contained wireless network processor that makes internet connectivity into your project simple. It uses SPI for communication (not UART) so you can transfer data as fast as you want or as slow as you want. What makes the CC3000 unique is its ability to associate to a WiFi access point using a cell phone app in the Texas Instruments process called SmartConfig. Features Supply Voltage: 3.3V - 12V Host Interface: 16MHZ Throughput (TCP): ~4Mbps WEP, WPA/WPA2 (AES and TKIP - Personal) Security Modes Onboard WIMAX Antenna Optional External Antenna Connection Page 1

2 CC3000 Library Installation: Download the SFE CC3000 Library from here: SFE_CC3000_Library-master Right-click on the.zip file and select Extract All to unzip the library. Copy the newly extracted folder into your libraries folder. WebClient Example: Open up the Arduino program and select File Examples SFE_CC3000_Library WebClient. Page 2

3 If the test succeeds, you should see HTML print out on the Serial Monitor. Page 3

4 Example project :Control in 7 led by web page Connection: GND >GND VCC >5v 3.3V >NC EN >5 INT >3 CS >10 MOSI >11 MISO >12 SCK >13 Page 4

5 Example Arduino code: #include <Adafruit_CC3000.h> #include <SPI.h> #include "utility/debug.h" #include "utility/socket.h" #include <Servo.h> int led1 = 4;int led2 = 7;int led3 = A0;int led4 =A1;int led5 = A2; int led6 = A3;int led7 = A4;int led8 = A5;int led9 = A6;int led10 = 2; Servo microservo; int pos = 0; String readstring; // These are the interrupt and control pins #define ADAFRUIT_CC3000_IRQ 3 // MUST be an interrupt pin! // These can be any two pins #define ADAFRUIT_CC3000_VBAT 5 #define ADAFRUIT_CC3000_CS 10 // Use hardware SPI for the remaining pins // On an UNO, SCK = 13, MISO = 12, and MOSI = 11 Adafruit_CC3000 cc3000 = Adafruit_CC3000(ADAFRUIT_CC3000_CS, ADAFRUIT_CC3000_IRQ, ADAFRUIT_CC3000_VBAT, SPI_CLOCK_DIVIDER); // you can change this clock speed #define WLAN_SSID "" // cannot be longer than 32 characters! #define WLAN_PASS " " // Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2 #define WLAN_SECURITY WLAN_SEC_WPA2 #define LISTEN_PORT 80 // What TCP port to listen on for connections. // The HTTP protocol uses port 80 by default. #define MAX_ACTION 10 // Maximum length of the HTTP action that can be parsed. Page 5

6 #define MAX_PATH 64 // Maximum length of the HTTP request path that can be parsed. // There isn't much memory available so keep this short! #define BUFFER_SIZE MAX_ACTION + MAX_PATH + 20 // Size of buffer for incoming request data. // Since only the first line is parsed this // needs to be as large as the maximum action // and path plus a little for whitespace and // HTTP version. #define TIMEOUT_MS 500 // Amount of time in milliseconds to wait for // an incoming request to finish. Don't set this // too high or your server could be slow to respond. Adafruit_CC3000_Server httpserver(listen_port); uint8_t buffer[buffer_size+1]; int bufindex = 0; char action[max_action+1]; char path[max_path+1]; void setup(void) Serial.begin(115200); Serial.println(F("Hello, CC3000!\n")); pinmode(led1,output);pinmode(led2,output);pinmode (led3,output);pinmode(led4,output);pinmode(led5,output); pinmode(led6,output);pinmode(led7,output);pinmode (led8,output);pinmode(led9,output);pinmode(led10,output); Serial.print("Free RAM: "); Serial.println(getFreeRam(), DEC); // Initialise the module Page 6

7 Serial.println(F("\nInitializing...")); if (!cc3000.begin()) Serial.println(F("Couldn't begin()! Check your wiring?")); while(1); Serial.print(F("\nAttempting to connect to ")); Serial.println (WLAN_SSID); if (!cc3000.connecttoap(wlan_ssid, WLAN_PASS, WLAN_SECURITY)) Serial.println(F("Failed!")); while(1); Serial.println(F("Connected!")); Serial.println(F("Request DHCP")); while (!cc3000.checkdhcp()) delay(100); // ToDo: Insert a DHCP timeout! // Display the IP address DNS, Gateway, etc. while (! displayconnectiondetails()) delay(1000); // ****************************************************** // You can safely remove this to save some flash memory! // ****************************************************** Serial.println(F("\r\nNOTE: This sketch may cause problems with other sketches")); Serial.println(F("since the.disconnect() function is never called, so the")); Serial.println(F("AP may refuse connection requests from the CC3000 until a")); Serial.println(F("timeout period passes. This is normal behaviour since")); Page 7

8 Serial.println(F("there isn't an obvious moment to disconnect with a server.\r\n")); // Start listening for connections httpserver.begin(); Serial.println(F("Listening for connections...")); void loop() // Try to get a client which is connected. Adafruit_CC3000_ClientRef client = httpserver.available(); while (client.connected()) if (client.available()) char c = client.read(); if (readstring.length() < 100) //store characters to string readstring += c; // Handle the request if it was parsed. if (c == '\n') client.fastrprintln(f("http/ OK")); client.fastrprintln(f("content-type: text/html")); client.fastrprintln(f("")); client.fastrprintln(f("<html>")); client.fastrprintln(f("<h1>")); client.fastrprintln(f("<body style=background:#80bfff>")); client.fastrprintln(f("<head>")); client.fastrprintln(f("<title>future ELECTRONICS</TITLE>")); client.fastrprintln(f("</head>")); client.fastrprintln(f("<body>")); client.fastrprintln(f("<center><h3> Tutorials Project</H3></CENTER>")); client.fastrprintln(f("<hr />")); client.fastrprintln(f("<hr/>")); client.fastrprintln(f("<hr/>")); Page 8

9 client.fastrprintln(f("<h4><center><img border=\"2\" src= \" /></center></ h4>")); client.fastrprintln(f("<hr/>")); client.fastrprintln(f("<hr/>")); client.fastrprintln(f("<center><h2>arduino with wifi module cc3000</br>")); client.fastrprintln(f("<a href=\"/?1\"\" >LED1 on</a>")); client.fastrprintln(f("<a href=\"/?2\"\">led1 Off</a></br>")); client.fastrprintln(f("<a href=\"/?3\"\">led2 on</a>")); client.fastrprintln(f("<a href=\"/?4\"\">led2 Off</a></br>")); //client.fastrprintln(f("<br />")); client.fastrprintln(f("<a href=\"/?5\"\">led3 on</a>")); client.fastrprintln(f("<a href=\"/?6\"\">led3 Off</a><br />")); client.fastrprintln(f("<a href=\"/?7\"\">led4 on</a>")); client.fastrprintln(f("<a href=\"/?8\"\">led4 Off</a><br />")); //client.fastrprintln(f("<br />")); client.fastrprintln(f("<a href=\"/?9\"\">led5 on</a>")); client.fastrprintln(f("<a href=\"/?10\"\">led5 Off</a><br />")); //client.fastrprintln(f("<br />")); client.fastrprintln(f("<a href=\"/?11\"\">led6 on</a>")); client.fastrprintln(f("<a href=\"/?12\"\">led6 Off</a><br />")); //client.fastrprintln(f("<br />")); //client.fastrprintln(f("<a href=\"/?13\"\">led7 on</a>")); //client.fastrprintln(f("<a href=\"/?14\"\">led7 Off</a><br / >")); // client.fastrprintln(f("<br />")); //client.fastrprintln(f("<a href=\"/?15\"\">led8 on</a>")); //client.fastrprintln(f("<a href=\"/?16\"\">led8 Off</a><br / >")); // client.fastrprintln(f("<br />")); //client.fastrprintln(f("<a href=\"/?17\"\">led9 on</a>")); //client.fastrprintln(f("<a href=\"/?18\"\">led9 Off</a><br / >")); //client.fastrprintln(f("<br />")); // client.fastrprintln(f("<a href=\"/?19\"\">led10 on</a>")); //client.fastrprintln(f("<a href=\"/?20\"\">led10 Off</a><br / >")); //client.fastrprintln(f("<br />")); Page 9

10 // client.fastrprintln(f("<a href=\"/?left\"\">rotate servo Left</ a>")); // client.fastrprintln(f("<a href=\"/?right\"\">rotate servo Right</a><br />")); client.fastrprintln(f("<p>created by </p>")); client.fastrprintln(f("<p>visit p>")); client.fastrprintln(f("<hr />")); client.fastrprintln(f("<br /></center></h2>")); client.fastrprintln(f("</body>")); client.fastrprintln(f("</html>")); // Close the connection when done. // Serial.println(F("Client disconnected")); client.stop(); if (readstring.indexof("?1") >0) digitalwrite(led1, HIGH); if (readstring.indexof("?2") >0) digitalwrite(led1, LOW); if (readstring.indexof("?3") >0) digitalwrite(led2, HIGH); if (readstring.indexof("?4") >0) digitalwrite(led2, LOW); if (readstring.indexof("?5") >0) digitalwrite(led3, HIGH); if (readstring.indexof("?6") >0) digitalwrite(led3, LOW); if (readstring.indexof("?7") >0) digitalwrite(led4, HIGH); if (readstring.indexof("?8") >0) digitalwrite(led4, LOW); if (readstring.indexof("?9") >0) digitalwrite(led5, HIGH); if (readstring.indexof("?10") >0) digitalwrite(led5, LOW); if (readstring.indexof("?11") >0) digitalwrite(led6, HIGH); if (readstring.indexof("?12") >0) digitalwrite(led6, LOW); Page 10

11 if (readstring.indexof("?13") >0) digitalwrite(led7, HIGH); if (readstring.indexof("?14") >0) digitalwrite(led7, LOW); if (readstring.indexof("?15") >0) digitalwrite(led8, HIGH); if (readstring.indexof("?16") >0) digitalwrite(led8, LOW); if (readstring.indexof("?17") >0) digitalwrite(led9, HIGH); if (readstring.indexof("?18") >0) digitalwrite(led9, LOW); if (readstring.indexof("?19") >0) digitalwrite(led10, HIGH); if (readstring.indexof("?20") >0) digitalwrite(led10, LOW); readstring=""; else // Unsupported action, respond with an HTTP 405 method not allowed error. client.fastrprintln(f("http/ Method Not Allowed")); client.fastrprintln(f("")); bool parserequest(uint8_t* buf, int bufsize, char* action, char* path) // Check if the request ends with \r\n to signal end of first line. if (bufsize < 2) return false; if (buf[bufsize-2] == '\r' && buf[bufsize-1] == '\n') parsefirstline((char*)buf, action, path); return true; return false; Page 11

12 // Parse the action and path from the first line of an HTTP request. void parsefirstline(char* line, char* action, char* path) // Parse first word up to whitespace as action. char* lineaction = strtok(line, " "); if (lineaction!= NULL) strncpy(action, lineaction, MAX_ACTION); // Parse second word up to whitespace as path. char* linepath = strtok(null, " "); if (linepath!= NULL) strncpy(path, linepath, MAX_PATH); // Tries to read the IP address and other connection details bool displayconnectiondetails(void) uint32_t ipaddress, netmask, gateway, dhcpserv, dnsserv; if(!cc3000.getipaddress(&ipaddress, &netmask, &gateway, &dhcpserv, &dnsserv)) Serial.println(F("Unable to retrieve the IP Address!\r\n")); return false; else Serial.print(F("\nIP Addr: ")); cc3000.printipdotsrev(ipaddress); Serial.print(F("\nNetmask: ")); cc3000.printipdotsrev(netmask); Serial.print(F("\nGateway: ")); cc3000.printipdotsrev(gateway); Serial.print(F("\nDHCPsrv: ")); cc3000.printipdotsrev(dhcpserv); Serial.print(F("\nDNSserv: ")); cc3000.printipdotsrev(dnsserv); Serial.println(); return true; Page 12

13 The result: Page 13