Manually connects to a WiFi network and performs an HTTP GET
request on a web page. Prints the contents of the page to
the serial console.
The security mode is defined by one of the following:
WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA, WLAN_SEC_WPA2
Hardware Connections:
Uno Pin CC3000 Board Function
+5V VCC or +5V 5V
GND GND GND
2 INT Interrupt
7 EN WiFi Enable
10 CS SPI Chip Select
11 MOSI SPI MOSI
12 MISO SPI MISO
13 SCK SPI Clock
Resources:
Include SPI.h, SFE_CC3000.h, and SFE_CC3000_Client.h
Development environment specifics:
Written in Arduino 1.0.5
Tested with Arduino UNO R3
This code is beerware; if you see me (or any other SparkFun
employee) at the local, and you've found our code helpful, please
buy us a round!
Distributed as-is; no warranty is given.
2015/12/10
Goro Nishida @ Independence Systems Yokohama
For HTTP POST Test.
****************************************************************/
#include <SPI.h>
#include <SFE_CC3000.h>
#include <SFE_CC3000_Client.h>
// Pins
#define CC3000_INT 2 // Needs to be an interrupt pin (D2/D3)
#define CC3000_EN 7 // Can be any digital pin
#define CC3000_CS 10 // Preferred is pin 10 on Uno
// Connection info data lengths
#define IP_ADDR_LEN 4 // Length of IP address in bytes
// Constants
char ap_ssid[] = "SSID"; // SSID of network
char ap_password[] = "PASSWORD"; // Password of network
unsigned int ap_security = WLAN_SEC_WPA2; // Security of network
unsigned int timeout = 30000; // Milliseconds
char server[] = "yourdomain.com"; // Remote host site
// Global Variables
SFE_CC3000 wifi = SFE_CC3000(CC3000_INT, CC3000_EN, CC3000_CS);
SFE_CC3000_Client client = SFE_CC3000_Client(wifi);
void setup() {
ConnectionInfo connection_info;
int i;
// Initialize Serial port
Serial.begin(115200);
Serial.println();
Serial.println("---------------------------");
Serial.println("SparkFun CC3000 - WebClient");
Serial.println("---------------------------");
// Initialize CC3000 (configure SPI communications)
if ( wifi.init() ) {
Serial.println("CC3000 initialization complete");
} else {
Serial.println("Something went wrong during CC3000 init!");
}
// Connect using DHCP
Serial.print("Connecting to SSID: ");
Serial.println(ap_ssid);
if (!wifi.connect(ap_ssid, ap_security, ap_password, timeout)) {
Serial.println("Error: Could not connect to AP");
}
// Gather connection details and print IP address
if ( !wifi.getConnectionInfo(connection_info) ) {
Serial.println("Error: Could not obtain connection details");
} else {
Serial.print("IP Address: ");
for (i = 0; i < IP_ADDR_LEN; i++) {
Serial.print(connection_info.ip_address[i]);
if ( i < IP_ADDR_LEN - 1 ) {
Serial.print(".");
}
}
Serial.println();
}
// Make a TCP connection to remote host
Serial.print("Performing HTTP POST of: ");
Serial.println(server);
if ( !client.connect(server, 80) ) {
Serial.println("Error: Could not make a TCP connection");
}
// Make a HTTP POST request
client.println("POST /postdisplay.php HTTP/1.1");
client.print("Host: ");
client.println(server);
// Content-Type
client.println("Content-Type: application/x-www-form-urlencoded");
//Body part (url encoded variables)
String body = String("prm1=abc&prm2=xyz&prm3=efg");
//数値から文字列への変換のテスト
//HTTP POSTには関係ないです
int num = 987;
String numstr = String(num);
body = body + numstr;
// Content-Length
client.print("Content-Length: "); //no need CR LF
client.println(body.length());
// Close field
client.println("Connection: close");
client.println();
//body
client.println(body);
Serial.println("setup finished.");
}
void loop() {
// If there are incoming bytes, print them
if ( client.available() ) {
char c = client.read();
Serial.print(c);
}
// If the server has disconnected, stop the client and wifi
if ( !client.connected() ) {
//Serial.println();
// Close socket
if ( !client.close() ) {
Serial.println("Error: Could not close socket");
}
// Disconnect WiFi
if ( !wifi.disconnect() ) {
Serial.println("Error: Could not disconnect from network");
}
// Do nothing
Serial.println("Finished WebClient test");
while (true) {
delay(1000);
}
}
}
スケッチの構成は元々のWebClientのままです。今回変更したのは、setup()の // Make a HTTP POST request // POSTの実行 のコメントの部分からです。前項で確認した内容と同様に、ここではArduinoのライブラリでPOSTしています。ヘッダーの送信、Content-Lengthの送信、Bodyの送信と続けています。
