micrfrx2
2.1.0.0
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MICRF RX 2 Click is a compact add-on board for high-sensitivity applications, including remote keyless entry, tire pressure monitoring systems, and remote actuation systems. This board features the MICRF219A, an ASK/OOK 433MHz receiver with Auto-Poll and RSSI from Microchip to offer top-notch RF performance. This super-heterodyne, image-reject RF receiver provides a -110dBm sensitivity at 1kbps and a 0.1% Bit Error Rate (BER), supporting adjustable demodulator filter bandwidths for bit rates up to 20kbps.
We provide a library for the MICRF RX 2 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
This library contains API for MICRF RX 2 Click driver.
micrfrx2_cfg_setup
Config Object Initialization function. micrfrx2_init
Initialization function. micrfrx2_enable_device
This function enables device by setting the SHD pin to low logic state. micrfrx2_wait_ready
This function waits for all training bytes to arrive which indicates data ready. micrfrx2_read_packet
This function reads data packet and stores it in a packet_buf only if the MICRFRX2_PREAMBLE bytes are received successfully. This example demonstrates the use of MICRF RX 2 click board by reading and parsing packet messages received from the transmitter.
The demo application is composed of two sections :
Initializes the driver and enables the device.
Waits for a data ready indication, then reads all packet data, verifies the CRC bytes in a packet, and displays its data as well as the RSSI value on the USB UART.
The OOK TX click board is a compatible transmitter for the MICRF RX 2 click.
Here are a few steps for troubleshooting if you are experiencing issues running this example:
- Check the MCU clock configuration, use an external oscillator instead of the MCU's internal one for better accuracy on manchester data rate delay.
- Measure the actual data rate on the data line and adjust the MICRFRX2_MAN_BIT_LEN_US value accordingly.
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
Other Mikroe Libraries used in the example:
Additional notes and informations
Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.