https://github.com/mr-sven/x3d-rfm-esp32

X3D RFM69 ESP Interface
https://github.com/mr-sven/x3d-rfm-esp32

deltadore esp32 rfm69 tydom x3d

Last synced: about 2 months ago
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X3D RFM69 ESP Interface

• Host: GitHub
• URL: https://github.com/mr-sven/x3d-rfm-esp32
• Owner: mr-sven
• License: apache-2.0
• Created: 2022-01-31T10:22:05.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2024-10-17T09:17:25.000Z (2 months ago)
• Last Synced: 2024-10-19T12:34:25.300Z (2 months ago)
• Topics: deltadore, esp32, rfm69, tydom, x3d
• Language: C
• Homepage:
• Size: 6.43 MB
• Stars: 10
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# X3D RFM69 ESP Interface

**User support with RF traces pictures and infos are very welcome. Also development support.**

Note: work in progress

- Modulation: FSK PCM

- Frequency: 868.95 MHz

- FSK Frequency Deviation: 80 kHz

- 25 µs bit time

- 40000 baud

- based on Semtech SX1211

- manual CRC

- CCITT Data Whitening

Payload format:

- Preamble          {32} 0xaaaaaaaa

- Syncword          {32} 0x8169967e

- Length            {8}

- Payload           {n}

- CRC16(Poly=0x1021,Init=0x0000)

The RFM69HW module is based on Semtech SX1231H. The nearest target frequency is 868.950012 MHz, the internal AFC is able to take care on this gap.

X3D Protocol analysis: [X3D-Protocol.md](X3D-Protocol.md)

X3D Messages: [X3D-Message-Log.md](X3D-Message-Log.md)

[List of X3D Devices](devices/)

## Wireing

used:

- DOIT ESP32 DEVKIT V1

- RFM69HW 868 MHz

| ESP32 | RFM69 |

|-------|-------|

| 3V3   | 3.3V  |

| GND   | GND   |

| D4    | DIO0  |

| D5    | NSS   |

| D18   | SCK   |

| D19   | MISO  |

| D23   | MOSI  |

[](x3d-rfm-esp32.png)

## ESP Projects

The ESP sub projects based on ESP-IDF 5.x. Each project folder contains a vscode configuration.

* [x3d-lib](x3d-lib) - Makefile gcc project to implement and test X3D generate and parsing lib.

* [x3d-raw-monitor](x3d-raw-monitor) - Init the SX1231 chip with correct config for the X3D protocol and dumps packet hex over serial.

* [x3d-raw-mqtt-publish](x3d-raw-mqtt-publish) - Publishes Raw packet binary over mqtt.

* [x3d-controller](x3d-controller) - ESP32 Based X3D Controller Module Project. **depricated**

* [ng-x3d-ctrl](ng-x3d-ctrl) - Next Gen ESP32 Based X3D Controller Module Project.