esib_iot_challenge
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esib_iot_challenge [2017/05/17 17:49] – samer | esib_iot_challenge [2017/05/17 18:31] – [3. Devices] samer | ||
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In a LoRaWAN network, the devices communicate with a Network Server through the gateway. The backend installed in the platform is based on an open-source LoRaWAN network-server https:// | In a LoRaWAN network, the devices communicate with a Network Server through the gateway. The backend installed in the platform is based on an open-source LoRaWAN network-server https:// | ||
- | [{{ : | + | [{{ : |
Start by choosing the application named '' | Start by choosing the application named '' | ||
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Devices in the LoRaWAN platform are implemented on Arduino boards with Dragino shields. The combined module as well as the basic configuration steps are presented in [[simple_lora_prototype|Simple Prototype of LoRa Communications]]. | Devices in the LoRaWAN platform are implemented on Arduino boards with Dragino shields. The combined module as well as the basic configuration steps are presented in [[simple_lora_prototype|Simple Prototype of LoRa Communications]]. | ||
- | Start by verifying the installation on your PC of the latest Arduino IDE. Drop the Arduino LMIC library in the corresponding folder. These tools are provided at the beginning of the challenge. | + | Start by verifying the installation on your PC of the latest Arduino IDE. Drop the Arduino LMIC library in the corresponding folder. These tools are provided at the beginning of the challenge. Open the example sketch '' |
<WRAP left round help 100%> | <WRAP left round help 100%> | ||
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</ | </ | ||
- | Download the example sketch and open it with Arduino IDE. Now you should configure your device with the same identifiers | + | Now you should configure your device with the same identifiers '' |
- | + | ||
- | <WRAP left round tip 100%> | + | |
- | Note that the device and application identifiers should be in little endian format. The application key is in big endian format. For example, | + | |
- | </ | + | |
<code c++> | <code c++> | ||
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void os_getDevKey (u1_t* buf) { memcpy_P(buf, | void os_getDevKey (u1_t* buf) { memcpy_P(buf, | ||
</ | </ | ||
- | |||
- | You can download the following sketch {{ : | ||
- | Verify | + | <WRAP left round tip 100%> |
- | Install the board files as noted in http:// | + | Note that the device and application identifiers should be in little endian format, while the application key is in big endian format. For example, '' |
- | Add the following library sodaq_rn2483_2.zip to your Arduino | + | </WRAP> |
- | In order to program | + | Let us analyze |
- | * Arduino IDE | + | <WRAP left round help 100%> |
- | * LMIC Library | + | * In the setup function, which channels are activated on the device? |
- | * | + | * What are the different spreading factors on each channel? |
- | The pin mapping corresponds to the Dragino electronic schematic: | + | * What is the regulation |
- | <code c++> | + | </WRAP> |
- | const lmic_pinmap lmic_pins = { | + | |
- | .nss = 10, | + | |
- | .rxtx = LMIC_UNUSED_PIN, | + | |
- | .rst = 9, | + | |
- | .dio = {2, 6, 7}, | + | |
- | }; | + | |
- | </ | + | |
- | + | ||
- | The send function is rescheduled TX_INTERVAL seconds after each transmission complete event: | + | |
- | <code c++> | + | |
- | case EV_TXCOMPLETE: | + | |
- | Serial.println(F(" | + | |
- | if(LMIC.dataLen) { | + | |
- | // data received in rx slot after tx | + | |
- | Serial.print(F(" | + | |
- | Serial.write(LMIC.frame+LMIC.dataBeg, | + | |
- | Serial.println(); | + | |
- | } | + | |
- | // Schedule next transmission | + | |
- | os_setTimedCallback(& | + | |
- | break; | + | |
- | </ | + | |
- | + | ||
- | The send function | + | |
- | <code c++> | + | |
- | do_send(& | + | |
- | </ | + | |
- | + | ||
- | The message containing | + | |
- | <code c++> | + | |
- | LMIC_setTxData2(1, | + | |
- | </code> | + | |
- | + | ||
- | === -. Triggered Message Sending === | + | |
- | You can also find another example | + | The LMIC library defines a set of events corresponding |
<WRAP left round help 100%> | <WRAP left round help 100%> | ||
- | * OTAA | + | * What is the difference between the JOINING and the JOINED events? |
- | * ID | + | * When is the EV_TXCOMPLETE event called? |
- | * Security | + | |
</ | </ | ||
===== -. Applications ===== | ===== -. Applications ===== | ||
mqtt-spy is an open source utility intended to help you with monitoring activity on MQTT topics. It has been designed to deal with high volumes of messages, as well as occasional publications. mqtt-spy is a JavaFX application, | mqtt-spy is an open source utility intended to help you with monitoring activity on MQTT topics. It has been designed to deal with high volumes of messages, as well as occasional publications. mqtt-spy is a JavaFX application, | ||
You can use mqtt-spy to debug the messages received from the LoRaWAN devices. For this, you should download the software tool from [[https:// | You can use mqtt-spy to debug the messages received from the LoRaWAN devices. For this, you should download the software tool from [[https:// |
esib_iot_challenge.txt · Last modified: 2021/08/28 09:53 by samer