nRF905 Arduino API

nRF905 Arduino API. Compatible with ESP8266 and ESP32 boards, tested on Wemos D1 mini Pro, NodeMCU 1.0 (ESP-12E module) and DOIT ESP32 Dev Module.

Building the hardware

See Buiding the hardware

Compiling / Installing

1. Install the Arduino IDE
2. Open the nRF905API.ino file in Arduino IDE
3. In the File menu select Preferences and add the following to Additional Board Manager URLs:

https://arduino.esp8266.com/stable/package_esp8266com_index.json,https://dl.espressif.com/dl/package_esp32_index.json

4. In the Tools menu select Board and find the board you are using (DO-IT ESP32 / Wemos / NodeMCU etc).
5. In the Sketch menu select Upload
6. When the code has been uploaded the device will reboot and start a WiFi access point named nRF905. Connect to that access point with the password nrf905api.
7. Open a webbrowser and go to http://192.168.4.1/
8. Follow the configuration wizard:
   
   
   
   
   
   
   
   
9. Your device will now connect to your WiFi network.

Support

Due to lack of time it might take a long time for me to give support.

Usage

/api/v1/config.json

Configure the nRF905.

Example:
http://192.168.x.y/api/v1/config.json?frequency=868400000&crc=16&txpower=10&rxpower=normal&rxaddr=a55a5aa5&txaddr=a55a5aa5&rxaddrwidth=4&txaddrwidth=4&rxpayloadwidth=16&txpayloadwidth=16

Parameter	Required	Description
frequency	No	Set the RF frequency
crc	No	off: disable CRC 8: enable 8-bit CRC 16: enable 16-bt CRC
txpower	No	Set the RF transmit power -10: -10dBm -2: -2dBm 6: 6dBm 10: 10dBm
rxpower	No	Set the RF receive power normal: normal receive mode low: low power receive mode
txaddrwidth	No	Set the number of Tx address bytes 1: 1 byte 4: 4 bytes
rxaddrwidth	No	Set the number of Rx address bytes 1: 1 byte 4: 4 bytes
txpayloadwidth	No	Set the number of Tx payload bytes 1...32: Payload is 1...32 bytes
rxpayloadwidth	No	Set the number of Rx payload bytes 1...32: Payload is 1...32 bytes
txaddr	No	Set the Tx address 0x12345678: Set Tx address to 0x12345678
rxaddr	No	Set the Rx address 0x12345678: Set Rx address to 0x12345678
nvram	No	Store the nRF905 configuration in NVRAM true: Store nRF905 config in NVRAM false: Do not store nRF905 config in NVRAM

/api/v1/status.json

This will show a status page with details about the hardware. This API call takes no parameters.

Example:
http://192.168.x.y/api/v1/status.json

/api/v1/receive.json

This will return a list of received data frames by the nRF905. This API call takes no parameters.

Example:
http://192.168.x.y/api/v1/receive.json

/api/v1/send.json

This will transmit data. After the data has been transmitted, the API will wait for data to be received (a reply to the transmitted data). By default it will wait for 2 seconds, but you can change this by adding the timeout parameter.

Example:
http://192.168.x.y/api/v1/send.json?txaddr=aabbccdd&payload=0400035efa0c04a55a5aa50000000000&timeout=10

Parameter	Required	Description
txaddr	Yes	Address to send the data to
payload	Yes	The data to be sent
timeout	No	Timeout for reading data after the transmission is completed (in seconds) Default: 2 seconds

/api/v1/systemconfig.json

Configure the system board.

Example:
http://192.168.x.y/api/v1/systemconfig.json?reset=true

Parameter	Required	Description
reset	No	Reset the system true: Reset system
nvram	No	Clear the NVRAM clear: Clear the NVRAM

Fan API calls

/api/v2/fan/link.json

Link the nRF905-API to a fan device. This API call takes no parameters.

Example:
http://192.168.x.y/api/v2/fan/link.json

/api/v2/fan/config.json

Configure the fan parameters.

Example:
http://192.168.x.y/api/v2/fan/config.json?model=zehnder&network=1a2b3c4d&main_unit_id=91&device_id=5d

Parameter	Required	Description
model	Yes	Fan model: zehnder: Zehnder fans (868.400MHz) buva: BUVA fans (868.200MHz)
network	Yes	Network ID of your fan network
main_unit_id	Yes	ID of your fan main unit
device_id	Yes	ID of your nRF905-API

/api/v2/fan/setspeed.json

Set the fan speed of your fan device.

Example:
http://192.168.x.y/api/v2/fan/setspeed.json?speed=high

Parameter	Required	Description
speed	Yes	Fan speed: low: Low speed medium: Medium speed high: High speed max: Maximum speed
timer	No	Set the fan timer (number of minutes)

/api/v2/fan/setvoltage.json

Set the fan voltage of your fan device.

Example:
http://192.168.x.y/api/v2/fan/setvoltage.json?voltage=2.4

Parameter	Required	Description
voltage	Yes	Voltage: 0.0...10.0: Voltage; range between 0.0 volt and 10.0 volt

/api/test/fan/querydevice.json

Query a device for it's current settings (this API endpoint is not yet finished and is in test-mode).

Example:
http://192.168.x.y/api/test/fan/querydevice.json?device_id=32

Parameter	Required	Description
device_id	No	Device ID: ID of a fan device. By default it will select the fan it's linked to