Fix per #183

- Update scanner examples to use channels 0-125
- Update documentation indicating channels 0-125 only
- Per datasheet radio only has 126 channels

RF24.h

@@ -708,7 +708,7 @@ s   *
   /**
    * Set RF communication channel
    *
-   * @param channel Which RF channel to communicate on, 0-127
+   * @param channel Which RF channel to communicate on, 0-125
    */
   void setChannel(uint8_t channel);
   

examples/scanner/scanner.ino

@@ -34,7 +34,7 @@ RF24 radio(7,8);
 // Channel info
 //
 
-const uint8_t num_channels = 128;
+const uint8_t num_channels = 126;
 uint8_t values[num_channels];
 
 //

examples_RPi/extra/scanner.cpp

@@ -48,8 +48,7 @@ RF24 radio(RPI_V2_GPIO_P1_15, RPI_V2_GPIO_P1_24, BCM2835_SPI_SPEED_8MHZ);
 //
 // Channel info
 //
-//const uint8_t num_channels = 128;
-const uint8_t num_channels = 120;
+const uint8_t num_channels = 126;
 uint8_t values[num_channels];