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examples/ArduinoIoTCloud-Notecard/ArduinoIoTCloud-Notecard.ino
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| /* | ||
| This sketch demonstrates how to exchange data between your board and the | ||
| Arduino IoT Cloud, while using the Notecard for wireless communication. | ||
| * Connect a potentiometer (or other analog sensor) to A0. | ||
| * When the potentiometer (or sensor) value changes the data is sent to the Cloud. | ||
| * When you flip the switch in the Cloud dashboard the onboard LED lights gets turned ON or OFF. | ||
| IMPORTANT: | ||
| This sketch works with any Wi-Fi, Cellular, LoRa or Satellite enabled Notecard. | ||
| The full list of compatible boards can be found here: | ||
| - https://github.com/arduino-libraries/ArduinoIoTCloud#what | ||
| */ | ||
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| #include <Notecard.h> | ||
| #include "thingProperties.h" | ||
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| #if !defined(LED_BUILTIN) && !defined(ARDUINO_NANO_ESP32) | ||
| static int const LED_BUILTIN = 2; | ||
| #endif | ||
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| /* | ||
| * Choose an interrupt capable pin to reduce polling and improve | ||
| * the overall responsiveness of the ArduinoIoTCloud library | ||
| */ | ||
| // #define ATTN_PIN 9 | ||
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| void setup() { | ||
| /* Initialize serial and wait up to 5 seconds for port to open */ | ||
| Serial.begin(9600); | ||
| for(unsigned long const serialBeginTime = millis(); !Serial && (millis() - serialBeginTime <= 5000); ) { } | ||
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| /* Specify the level of detail for debug messages */ | ||
| setDebugMessageLevel(DBG_INFO); | ||
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| /* Configure LED pin as an output */ | ||
| pinMode(LED_BUILTIN, OUTPUT); | ||
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| /* This function takes care of connecting your sketch variables to the ArduinoIoTCloud object */ | ||
| initProperties(); | ||
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| /* Initialize Arduino IoT Cloud library */ | ||
| #ifndef ATTN_PIN | ||
| ArduinoCloud.begin(ArduinoIoTPreferredConnection); | ||
| ArduinoCloud.setNotecardPollingInterval(3000); // default: 1000ms, min: 250ms | ||
| #else | ||
| ArduinoCloud.begin(ArduinoIoTPreferredConnection, ATTN_PIN); | ||
| #endif | ||
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| ArduinoCloud.printDebugInfo(); | ||
| } | ||
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| void loop() { | ||
| ArduinoCloud.update(); | ||
| potentiometer = analogRead(A0); | ||
| seconds = millis() / 1000; | ||
| } | ||
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| /* | ||
| * 'onLedChange' is called when the "led" property of your Thing changes | ||
| */ | ||
| void onLedChange() { | ||
| Serial.print("LED set to "); | ||
| Serial.println(led); | ||
| digitalWrite(LED_BUILTIN, led); | ||
| } |
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| Notecard Connectivity | ||
| ===================== | ||
|
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| The Notecard is a wireless, secure abstraction for device connectivity, that can | ||
| be used to enable _ANY*_ device with I2C, or UART, to connect to the Arduino IoT | ||
| Cloud via cellular, LoRa, satellite or Wi-Fi! | ||
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| As a result, your existing device architecture can now have first class support | ||
| in the Arduino IoT Cloud, by using a Notecard as a secure communication channel. | ||
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| > \*_While any device with I2C/UART may use the Notecard, the Arduino IoT Cloud | ||
| > library is not supported by the AVR toolchain. Therefore, devices based on the | ||
| > AVR architecture cannot access the Arduino IoT Cloud via the Notecard._ | ||
| > | ||
| > _However, any device (including AVR), may use the Notecard library to send data | ||
| > to Notehub, then that data may be routed to any endpoint of your choosing. See the | ||
| > [Notecard Routing Guide](https://dev.blues.io/guides-and-tutorials/routing-data-to-cloud) | ||
| > for more information..._ | ||
| Wireless Connectivity Options | ||
| ----------------------------- | ||
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| - [Cellular](https://shop.blues.com/collections/notecard/products/notecard-cellular) | ||
| - [Cellular + Wi-Fi](https://shop.blues.com/collections/notecard/products/notecard-cell-wifi) | ||
| - [Wi-Fi](https://shop.blues.com/collections/notecard/products/wifi-notecard) | ||
| - [LoRa](https://shop.blues.com/collections/notecard/products/notecard-lora) | ||
| - [Satellite](https://shop.blues.com/products/starnote) | ||
|
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| How it Works | ||
| ------------ | ||
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| **Architecture Diagram:** | ||
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| ``` | ||
| -------- ------------ ----------- ----------- | ||
| | | | | | | | | | ||
| | Host | | | Secure | | | Arduino | | ||
| | MCU |---<I2C/UART>---| Notecard | ( ( Wireless ) ) | Notehub |---<TLS>---| IoT | | ||
| | | | | Protocol | | | Cloud | | ||
| |______| |__________| |_________| |_________| | ||
| ``` | ||
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| Getting Started | ||
| --------------- | ||
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| ### Setup a Notehub Account | ||
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| Using the Notecard only requires a couple of easy steps: | ||
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| 1. [Purchase a Notecard](https://shop.blues.com/collections/notecard) (and | ||
| [Notecarrier](https://shop.blues.com/collections/notecarrier)) that fits the | ||
| needs of your device. | ||
| > _**NOTE:** We recommend starting with our [Dev Kit](https://shop.blues.com/products/blues-global-starter-kit) | ||
| > if you are unsure._ | ||
| 1. [Setup a Notehub account](https://dev.blues.io/quickstart/notecard-quickstart/notecard-and-notecarrier-f/#set-up-notehub). | ||
| > _**NOTE:** Notehub accounts are free (no credit card required)._ | ||
| 1. [Create a project on your Notehub account](https://dev.blues.io/quickstart/notecard-quickstart/notecard-and-notecarrier-f/#create-a-notehub-project). | ||
| 1. In `thingProperties.h`, replace "com.domain.you:product" (from | ||
| `NOTECARD_PRODUCT_UID`) with the ProductUID of your new Notehub project. | ||
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| ### Power-up the Device | ||
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| 1. [Connect the Notecard to your Host MCU](https://dev.blues.io/quickstart/notecard-quickstart/notecard-and-notecarrier-f/#connect-your-notecard-and-notecarrier) | ||
| 1. Flash the `ArduinoIoTCloud-Notecard` example sketch to your device. You | ||
| should see the device reporting itself as online in your [Notehub Project](https://notehub.io). | ||
|
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| ### Associate Notecard to Arduino IoT Cloud | ||
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| 1. Create a "MANUAL Device" in the Arduino IoT Cloud, then [add environment | ||
| variables for the "Device ID" and "Secret Key" to your Notecard in Notehub](https://dev.blues.io/guides-and-tutorials/notecard-guides/understanding-environment-variables/#setting-a-notehub-device-variable). | ||
| - `_sn`: \<Device ID\> | ||
| - `_secret_key`: \<Secret Key\> | ||
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| ### More Information | ||
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| For more information about the Notecard and Notehub in general, please see our | ||
| [Quickstart Guide](https://dev.blues.io/quickstart/) for a general overview of | ||
| how the Notecard and Notehub are designed to work. |
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| #include <Arduino_ConnectionHandler.h> | ||
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| /* If provided, the Wi-Fi Credentials will be passed along to the Notecard. If | ||
| * the Notecard supports Wi-Fi, it will attempt to connect to the network using | ||
| * these credentials, if not, the Notecard will safely ignore these values. */ | ||
| #define SECRET_WIFI_SSID "YOUR_WIFI_NETWORK_NAME" | ||
| #define SECRET_WIFI_PASS "YOUR_WIFI_PASSWORD" |
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| #include <string.h> | ||
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| #include <ArduinoIoTCloud.h> | ||
| #include <Arduino_ConnectionHandler.h> | ||
| #include "arduino_secrets.h" | ||
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| /* The Notecard can provide connectivity to almost any board via ESLOV (I2C) | ||
| * or UART. An empty string (or the default value provided below) will not | ||
| * override the Notecard's existing configuration. | ||
| * Learn more at: https://dev.blues.io */ | ||
| #define NOTECARD_PRODUCT_UID "com.domain.you:product" | ||
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| /* Uncomment the following line to use the Notecard over UART */ | ||
| // #define UART_INTERFACE Serial1 | ||
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| void onLedChange(); | ||
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| bool led; | ||
| int potentiometer; | ||
| int seconds; | ||
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| #ifndef UART_INTERFACE | ||
| NotecardConnectionHandler ArduinoIoTPreferredConnection(NOTECARD_PRODUCT_UID); | ||
| #else | ||
| NotecardConnectionHandler ArduinoIoTPreferredConnection(NOTECARD_PRODUCT_UID, UART_INTERFACE); | ||
| #endif | ||
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| void initProperties() { | ||
| ArduinoCloud.addProperty(led, Permission::ReadWrite).onUpdate(onLedChange); | ||
| ArduinoCloud.addProperty(potentiometer, Permission::Read).publishOnChange(10); | ||
| ArduinoCloud.addProperty(seconds, Permission::Read).publishEvery(5 * MINUTES); | ||
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| if (::strncmp(SECRET_WIFI_SSID, "YOUR_WIFI_NETWORK_NAME", sizeof(SECRET_WIFI_SSID))) { | ||
| ArduinoIoTPreferredConnection.setWiFiCredentials(SECRET_WIFI_SSID, SECRET_WIFI_PASS); | ||
| } | ||
| } |
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