enable SoftSPI for RF24 when using ethernet cards

RF24.cpp

@@ -8,6 +8,11 @@
 
 #include "nRF24L01.h"
 #include "RF24_config.h"
+#ifdef SOFTSPI
+#include "DigitalIO.h"
+#else
+#include <SPI.h>
+#endif
 #include "RF24.h"
 
 /****************************************************************************/
@@ -19,9 +24,15 @@ void RF24::csn(int mode)
   // divider of 4 is the minimum we want.
   // CLK:BUS 8Mhz:2Mhz, 16Mhz:4Mhz, or 20Mhz:5Mhz
 #ifdef ARDUINO
+  //
+  //  we do not use these with SoftSPI
+  //
+#ifndef SOFTSPI
   SPI.setBitOrder(MSBFIRST);
   SPI.setDataMode(SPI_MODE0);
   SPI.setClockDivider(SPI_CLOCK_DIV4);
+#endif
+
 #endif
   digitalWrite(csn_pin,mode);
 }

RF24.h

@@ -12,11 +12,16 @@
  * Class declaration for RF24 and helper enums
  */
 
+
 #ifndef __RF24_H__
 #define __RF24_H__
 
 #include <RF24_config.h>
 
+#ifdef SOFTSPI
+#include <DigitalIO.h>
+#endif
+
 /**
  * Power Amplifier level.
  *
@@ -45,15 +50,18 @@ typedef enum { RF24_CRC_DISABLED = 0, RF24_CRC_8, RF24_CRC_16 } rf24_crclength_e
 class RF24
 {
 private:
-  uint8_t ce_pin; /**< "Chip Enable" pin, activates the RX or TX role */
-  uint8_t csn_pin; /**< SPI Chip select */
-  bool wide_band; /* 2Mbs data rate in use? */
-  bool p_variant; /* False for RF24L01 and true for RF24L01P */
-  uint8_t payload_size; /**< Fixed size of payloads */
-  bool ack_payload_available; /**< Whether there is an ack payload waiting */
-  bool dynamic_payloads_enabled; /**< Whether dynamic payloads are enabled. */ 
-  uint8_t ack_payload_length; /**< Dynamic size of pending ack payload. */
-  uint64_t pipe0_reading_address; /**< Last address set on pipe 0 for reading. */
+#ifdef SOFTSPI
+	SoftSPI<SOFT_SPI_MISO_PIN, SOFT_SPI_MOSI_PIN, SOFT_SPI_SCK_PIN, SPI_MODE> spi;
+#endif
+	uint8_t ce_pin; /**< "Chip Enable" pin, activates the RX or TX role */
+	uint8_t csn_pin; /**< SPI Chip select */
+	bool wide_band; /* 2Mbs data rate in use? */
+	bool p_variant; /* False for RF24L01 and true for RF24L01P */
+	uint8_t payload_size; /**< Fixed size of payloads */
+	bool ack_payload_available; /**< Whether there is an ack payload waiting */
+	bool dynamic_payloads_enabled; /**< Whether dynamic payloads are enabled. */
+	uint8_t ack_payload_length; /**< Dynamic size of pending ack payload. */
+	uint64_t pipe0_reading_address; /**< Last address set on pipe 0 for reading. */
 
 protected:
   /**

RF24_config.h

@@ -35,6 +35,22 @@ extern HardwareSPI SPI;
 #else
 #define IF_SERIAL_DEBUG(x)
 #endif
+//
+// if we are using Soft SPI
+//
+#ifdef ARDUINO
+#define SOFTSPI				// comment out this line to use hardwarer SPI
+#ifdef SOFTSPI
+//
+// change these pins to your liking
+//
+const uint8_t SOFT_SPI_MISO_PIN = 16;
+const uint8_t SOFT_SPI_MOSI_PIN = 15;
+const uint8_t SOFT_SPI_SCK_PIN  = 14;
+const uint8_t SPI_MODE 			= 0;
+#define SPI spi
+#endif
+#endif
 
 // Avoid spurious warnings
 #if 1