Small Update to Mirf Library
One of my readers asked ( in the forums too ) for some help on reading register values from the Nordic chip, so I put together a quick example and added it to the library. This example reads the RF_SETUP register and prints the value in binary to the Serial output:
/**
* Pins:
* Hardware SPI:
* MISO -> 12
* MOSI -> 11
* SCK -> 13
*
* Configurable:
* CE -> 8
* CSN -> 7
*/
#include
#include
#include
void setup() {
Serial.begin(9600);
Serial.println( "Starting wireless..." );
// Setup
Mirf.init();
Mirf.setRADDR((byte *)"clie1");
Mirf.payload = sizeof(unsigned long);
Mirf.config();
// Read and print RF_SETUP
byte rf_setup = 0;
Mirf.readRegister( RF_SETUP, &rf_setup, sizeof(rf_setup) );
Serial.print( "rf_setup = " );
Serial.println( rf_setup, BIN );
Serial.println( "Wireless initialized!" );
}
void loop() {} When I ran this code on my board, it printed:
Starting wireless...
rf_setup = 1111
Wireless initialized!So that’s 00001111 for the value of RF_SETUP. Breaking it down, high bit to low bit, using the datasheet:
0 – No continuous carrier wave
0 – Reserved – must be 0
0 – RF_DR_LOW is 0
0 – No PLL lock signal
1 – RF_DR_HIGH is 1, and according to chart, 01 = 2 Mbps
1 – High bit RF_PWR is 1
1 – Low bit RF_PWR is 1, according to chart, 11 = 0 dBm output power
1 – Not used/obsolete
You can download the library and bundled examples ( including this one ) from the Software page. Cheers!