A port of the Mirf library to Raspberry Pi. The library provides basic control of the Nordic NRF24l01 RF Transceiver.
I updated this.
* Change the file name of the device.
* Replaced SPI transfer function.
* Add example.
I tested on this environment:
- Raspberry Pi
$ uname -a
Linux raspberrypi 4.19.66+ #1253 Thu Aug 15 11:37:30 BST 2019 armv6l GNU/Linux
- Orangepi PC
$ uname -a
Linux orangepipc 4.19.62-sunxi #5.92 SMP Wed Jul 31 22:07:23 CEST 2019 armv7l GNU/Linux
| nRF24L01 | Raspberry Pi | |
|---|---|---|
| MISO | -- | Pin#21(SPI MISO) |
| SCK | -- | Pin#23(SPI SCLK) |
| MOSI | -- | Pin#19(SPI MOSI) |
| CE | -- | Pin#22(GPIO25)(*) |
| CSN | -- | Pin#24(GPIO8)(*) |
| GND | -- | GND |
| VCC | -- | 3.3V |
*You can change any pin.
Mirf.cePin=XX; // GPIOXX
Mirf.csnPin=YY; // GPIOYY
git clone https://github.com/nopnop2002/Raspberry-Mirf
cd Raspberry-Mirf
make
sudo make install
make example
sudo ./transmitter
or
sudo ./receiver
- Wirering
| nRF24L01 | OrangePi PC | |
|---|---|---|
| MISO | -- | Pin#21(SPI MISO) |
| SCK | -- | Pin#23(SPI SCLK) |
| MOSI | -- | Pin#19(SPI MOSI) |
| CE | -- | Pin#22(GPIO2)(*) |
| CSN | -- | Pin#24(GPIO67)(*) |
| GND | -- | GND |
| VCC | -- | 3.3V |
*You can change any pin.
- Library Install
git clone https://github.com/nopnop2002/Raspberry-Mirf
cd Raspberry-Mirf
cp Makefile.opi Makefile
make
sudo make install
- Change source
Disable Raspberry Pi and Enable OrangePi PC
// Raspberry pi
#if 1
Nrf24l Mirf = Nrf24l("/dev/spidev0.1", 4000000);
Mirf.cePin=25; // GPIO25
Mirf.csnPin=8; // GPIO8
#endif
//OrangePi PC
#if 0
Nrf24l Mirf = Nrf24l("/dev/spidev0.0", 4000000);
Mirf.cePin=2; // GPIO2
Mirf.csnPin=67; // GPIO67
#endif
I used this library on Arduino.
-
from Raspberry to Arduino:
Raspberry side:transmitter
Arduino side:Receiver -
from Arduino to Raspberry:
Raspberry side:receiver
Arduino side:Emitter
I used this library on esp-idf.
When changing the settings of the nRF24L01, it is necessary to power cycle the nRF24L01 before executing.
Because nRF24L01 remembers the previous setting.
nRF24L01 does not have Software Reset function.