exploring_lora
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exploring_lora [2018/09/27 17:00] – [3.2. Running Basic Sketches] samer | exploring_lora [2018/09/29 12:59] – [3.1. Modifying the Radio Parameters] samer | ||
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Download the following software on your PC: | Download the following software on your PC: | ||
- | * RadioHead: The Packet Radio library for embedded microprocessors can be downloaded from [[http://www.airspayce.com/mikem/ | + | * RadioHead: The Packet Radio library for embedded microprocessors can be downloaded from [[https://github.com/samerlahoud/ |
* Arduino IDE: Specific OS versions can be downloaded from [[https:// | * Arduino IDE: Specific OS versions can be downloaded from [[https:// | ||
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Note well the location of the library folder on your computer. In the following, you will be required to modify source files located in this folder. | Note well the location of the library folder on your computer. In the following, you will be required to modify source files located in this folder. | ||
</ | </ | ||
- | |||
==== -. Installation ==== | ==== -. Installation ==== | ||
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==== -. Modifying the Radio Parameters ==== | ==== -. Modifying the Radio Parameters ==== | ||
- | Start by setting | + | Download the {{ : |
+ | |||
+ | Take a look at the source code in '' | ||
+ | |||
+ | * Central frequency (freq) | ||
+ | * Spreading Factor (SF) | ||
+ | * Bandwidth (Bw) | ||
+ | * Coding Rate (CR) | ||
+ | * Transmit power (Pow) | ||
+ | |||
+ | <code c++> | ||
+ | rf95.setFrequency(frequency); | ||
+ | // Setup Power,dBm | ||
+ | rf95.setTxPower(13); | ||
+ | |||
+ | // Setup Spreading Factor (6 ~ 12) | ||
+ | rf95.setSpreadingFactor(7); | ||
+ | |||
+ | // Setup BandWidth, option: 7800, | ||
+ | //Lower BandWidth for longer distance. | ||
+ | rf95.setSignalBandwidth(125000); | ||
+ | |||
+ | // Setup Coding Rate: | ||
+ | rf95.setCodingRate4(5); | ||
+ | </ | ||
+ | |||
+ | In order to reduce collisions, configure | ||
^ Group Number | ^ Group Number | ||
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| | | | ||
- | For this, open the '' | ||
- | |||
- | <file cpp RH_RF95.cpp> | ||
- | setFrequency(86X.Y); | ||
- | </ | ||
- | |||
- | The typical configuration for LoRa modules consists of 125 kHz sub-channels, | ||
- | |||
- | * Bw125Cr45Sf128 | ||
- | * Bw125Cr48Sf4096 | ||
- | * Bw31_25Cr48Sf512 | ||
- | |||
- | Radio configuration is applied in '' | ||
- | <file cpp RH_RF95.cpp> | ||
- | setModemConfig(Bw125Cr45Sf128); | ||
- | </ | ||
==== -. Running Basic Sketches ==== | ==== -. Running Basic Sketches ==== | ||
- | Download the {{ : | + | Now you can compile and upload |
[{{ : | [{{ : |
exploring_lora.txt · Last modified: 2021/10/20 12:52 by samer