IMPORTANT UPDATE

Due to changes in the RN171 module, we can no longer provide support for this code.

Ubidots-Arduino-WiFly

Ubidots-Arduino-WiFly provides an example of sending data to Ubidots from the WiFly shield, which uses the RN171 chip from Microchip Technologies.

Components

• Arduino uno
• WiFly shield RN171
• This WiFly library

A Quick example

Here's a quick example of how to post an analogue value to Ubidots.

/*
Basic sketch for WiFly shield RN171

This is a basic example to post a value to Ubidots using the function "save_value".

You'll need:
* An Arduino Uno
* A WiFly Shield RN171

Pins' connection
Arduino       WiFly
 2    <---->    TX
 3    <---->    RX

Created 20 Aug. 2014
by Mateo Velez - Metavix

This example code is in the public domain.

*/

//-------------------------------------------------------------//------------------------------Libraries-----------------------//-------------------------------------------------------------

#include <Arduino.h> #include <SoftwareSerial.h> #include <WiFly.h>

//-------------------------------------------------------------//---------------------Network Configuration-------------------//-------------------------------------------------------------

/* Change the AUTH according to your network settings

If is open change to WIFLY_AUTH_OPEN If is WPA1 change to WIFLY_AUTH_WPA1 If is WPA1_2 change to WIFLY_AUTH_WPA1 If is WPA2 change to WIFLY_AUTH_WPA1

*/ #define SSID "Atom$House$Medellin" #define KEY "atommed2014" #define AUTH WIFLY_AUTH_WPA2_PSK

SoftwareSerial uart(2, 3); WiFly wifly(uart); unsigned long start_millis = 0;

void setup() {

Serial.begin(9600); Serial.println("------- WIFLY HTTP --------");

uart.begin(9600); if (!wifly.isAssociated(SSID)) { while (!wifly.join(SSID, KEY, AUTH)) { Serial.println("Failed to join " SSID); Serial.println("Wait 0.1 second and try again..."); delay(100); } wifly.save(); }

}

void loop() {

int reset = 0;

int valor = analogRead(A0); while ((save_value(valor)) < 0) { reset++; if(reset == 10) { asm volatile (" jmp 0"); } }

// Uncomment for debug

// char r; // while (wifly.receive((uint8_t *)&r, 1, 1000) == 1) // { // Serial.print(r); // } } int save_value(int dato) { char post_data_buf[32]; snprintf(post_data_buf, sizeof(post_data_buf), "{"value": %d}rn", dato);

char host[20]; uint16_t port;

if (!wifly.connect("things.ubidots.com", 80)) {

Serial.println("Failed to connect.rn"); return -2;

}

// Send request char buf[200]; //dont forget change your id and your token snprintf(buf, sizeof(buf), "POST /api/v1.6/variables/53beeca07625420bde83ce29/values HTTP/1.1rnContent-Type: application/jsonrnContent-Length: %drnX-Auth-Token: CCN8FrVulRYGulPTkbaiR9Myx8qN2ornHost: things.ubidots.comrnrn",strlen(post_data_buf)); wifly.send(buf);

// Send body if (post_data_buf != NULL) { wifly.send(post_data_buf); } wifly.send("rn"); return 0;

}

Explanation of the functions

save_value()

boolean = ubiclient.save_value(value)

Type	Argument	Description
int	value	The value you wish to send to Ubidots

Saves a value to Ubidots. Returns true upon success. Returns false upon error.