ESPHome nRF24L01 Component

This component provides a bridge between ESPHome and the nRF24L01+ 2.4GHz wireless transceiver. It abstracts the SPI communication and provides a high-level C++ API for sending and receiving data packets while staying integrated with the ESPHome lifecycle.

Features

• Full SPI Integration: Uses the standard ESPHome SPI bus.
• Configurable Power Levels: Supports MIN, LOW, HIGH, and MAX power settings.
• Variable Data Rates: Supports 250Kbps, 1Mbps, and 2Mbps.
• Payload Management: Support for dynamic payloads and ACK payloads.
• Callback System: Easily hook into incoming data events via add_on_data_callback.

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Hardware Setup

nRF24L01 Pin	ESP32/ESP8266 Pin	Notes
VCC	3.3V	Important: Requires a stable 3.3V source (use a capacitor).
GND	GND
CE	Any GPIO	Configured via ce_pin.
CSN	Any GPIO	Configured via cs_pin in the SPI block.
SCK	SPI SCK	Hardware SPI Clock.
MOSI	SPI MOSI	Hardware SPI Master Out Slave In.
MISO	SPI MISO	Hardware SPI Master In Slave Out.

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YAML Configuration

Add the following to your ESPHome configuration file:

spi:
  clk_pin: GPIO18
  mosi_pin: GPIO23
  miso_pin: GPIO19

nrf24:
  id: my_nrf24
  cs_pin: GPIO5
  ce_pin: GPIO17
  channel: 76             # Optional: 0-125
  rf_data_rate: 1MBPS    # Optional: 250KBPS, 1MBPS, 2MBPS
  pa_level: MAX          # Optional: MIN, LOW, HIGH, MAX