WiFi PRO 14: HTTPS GET
This example shows how to perform HTTPS GET requests. It is mandatory to provide the trusted Certificate Authority (CA) in order to securely identify the server
Required Materials
1 x Waspmote 1 x Battery 1 x WiFi PRO Module
Notes
- The battery has to be connected. - This example can be executed in Waspmote v15
Code
/*
* ------ WIFI Example --------
*
* Explanation: This example shows how to perform HTTPS GET requests.
* It is mandatory to provide the trusted Certificate Authority (CA)
* in order to securely identify the server.
*
* Copyright (C) 2017 Libelium Comunicaciones Distribuidas S.L.
* http://www.libelium.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*
* Version: 3.1
* Design: David Gascon
* Implementation: Yuri Carmona
*/
// Put your libraries here (#include ...)
#include <WaspWIFI_PRO.h>
// choose socket (SELECT USER'S SOCKET)
///////////////////////////////////////
uint8_t socket = SOCKET0;
///////////////////////////////////////
// SERVER settings
///////////////////////////////////////
char type[] = "https";
char host[] = "test.libelium.com";
char port[] = "443";
char link[] = "getpost_frame_parser.php?counter=1&varA=1&varB=2&varC=3&varE=4&varE=5";
///////////////////////////////////////
// define trusted Certificate Authority
////////////////////////////////////////////////////////////////////////
char TRUSTED_CA[] =\
"-----BEGIN CERTIFICATE-----\r"\
"MIICNjCCAZ+gAwIBAgIJAL5/5O7w2Cm5MA0GCSqGSIb3DQEBCwUAMFMxLTArBgNV\r"\
"BAoMJExpYmVsaXVtIENvbXVuaWNhY2lvbmVzIERpc3RyaWJ1aWRhczELMAkGA1UE\r"\
"BhMCRVMxFTATBgNVBAMMDGxpYmVsaXVtLmNvbTAgFw0xNzAxMjQwOTU1MDJaGA8y\r"\
"MTE2MTIzMTA5NTUwMlowUzEtMCsGA1UECgwkTGliZWxpdW0gQ29tdW5pY2FjaW9u\r"\
"ZXMgRGlzdHJpYnVpZGFzMQswCQYDVQQGEwJFUzEVMBMGA1UEAwwMbGliZWxpdW0u\r"\
"Y29tMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCfI9j2DbbuK1fUrH1RKmnU\r"\
"EQ22r7FAT+R7uxOhSBnx61qlLjtZT9zuA7eMuq9k3tUBSkMxJjai6ebqmvPUpgrU\r"\
"0EoCZg+PrAglcvqAkzv8QDRueEi0hLCa8iTUsuora3viKMefbFR8ROH5uQrFnZK1\r"\
"1aUQxeV0HBL9zIH8ghaLmwIDAQABoxAwDjAMBgNVHRMEBTADAQH/MA0GCSqGSIb3\r"\
"DQEBCwUAA4GBAG2bWPWsfHzSqwlzY+5kJDeAgJ7GfQo51+QXqMq5nnjcPhgkIkvz\r"\
"IVOO2WM01Pnm3LuEQ3YS8eHS1blOL8i7GsxxIMR6aQ8E0XYbcizPvcyL+NAdIodd\r"\
"bSa087amkPIVcwETuGf2JdpbJLEjWayfcE1Ll+DA7UfX9korLzZzfDxX\r"\
"-----END CERTIFICATE-----";
////////////////////////////////////////////////////////////////////////
uint8_t error;
uint8_t status;
unsigned long previous;
void setup()
{
USB.println(F("Start program"));
USB.println(F("***************************************"));
USB.println(F("Once the module is set with one or more"));
USB.println(F("AP settings, it attempts to join the AP"));
USB.println(F("automatically once it is powered on"));
USB.println(F("Refer to example 'WIFI_PRO_01' to configure"));
USB.println(F("the WiFi module with proper settings"));
USB.println(F("***************************************"));
//////////////////////////////////////////////////
// 1. Switch ON
//////////////////////////////////////////////////
error = WIFI_PRO.ON(socket);
if (error == 0)
{
USB.println(F("1. WiFi switched ON"));
}
else
{
USB.println(F("1. WiFi did not initialize correctly"));
}
//////////////////////////////////////////////////
// 2. Set Trusted CA
//////////////////////////////////////////////////
error = WIFI_PRO.setCA(TRUSTED_CA);
if (error == 0)
{
USB.println(F("2. Trusted CA set OK"));
}
else
{
USB.println(F("2. Error calling 'setCA' function"));
WIFI_PRO.printErrorCode();
}
//////////////////////////////////////////////////
// 3. Switch OFF
//////////////////////////////////////////////////
WIFI_PRO.OFF(socket);
USB.println(F("3. WiFi switched OFF"));
USB.println(F("Setup done\n\n"));
}
void loop()
{
// get actual time
previous = millis();
//////////////////////////////////////////////////
// 1. Switch ON
//////////////////////////////////////////////////
error = WIFI_PRO.ON(socket);
if (error == 0)
{
USB.println(F("1. WiFi switched ON"));
}
else
{
USB.println(F("1. WiFi did not initialize correctly"));
}
//////////////////////////////////////////////////
// 2. Join AP
//////////////////////////////////////////////////
// check connectivity
status = WIFI_PRO.isConnected();
// Check if module is connected
if (status == true)
{
USB.print(F("2. WiFi is connected OK"));
USB.print(F(" Time(ms):"));
USB.println(millis()-previous);
////////////////////////////////////////////////
// http request
////////////////////////////////////////////////
error = WIFI_PRO.getURL( type, host, port, link);
// check response
if (error == 0)
{
USB.println(F("HTTPS GET OK"));
USB.print(F("HTTP Time from OFF state (ms):"));
USB.println(millis()-previous);
USB.print(F("Server answer:"));
USB.println(WIFI_PRO._buffer, WIFI_PRO._length);
}
else
{
USB.println(F("Error calling 'getURL' function"));
WIFI_PRO.printErrorCode();
}
}
else
{
USB.print(F("3. WiFi is connected ERROR"));
USB.print(F(" Time(ms):"));
USB.println(millis()-previous);
}
//////////////////////////////////////////////////
// 3. Switch OFF
//////////////////////////////////////////////////
WIFI_PRO.OFF(socket);
USB.println(F("3. WiFi switched OFF\n\n\n"));
delay(5000);
}Output
H#
Start program
***************************************
Once the module is set with one or more
AP settings, it attempts to join the AP
automatically once it is powered on
Refer to example 'WIFI_PRO_01' to configure
the WiFi module with proper settings
***************************************
1. WiFi switched ON
2. Trusted CA set OK
3. WiFi switched OFF
Setup done
1. WiFi switched ON
2. WiFi is connected OK Time(ms):5724
HTTPS GET OK
HTTP Time from OFF state (ms):9434
Server answer:method::GET;
counter::1;
varA::1;
varB::2;
varC::3;
varE::5;
error::id_wasp;
3. WiFi switched OFF
1. WiFi switched ON
2. WiFi is connected OK Time(ms):5153
HTTPS GET OK
HTTP Time from OFF state (ms):5818
Server answer:method::GET;
counter::1;
varA::1;
varB::2;
varC::3;
varE::5;
error::id_wasp;
3. WiFi switched OFFLast updated