Fixed broken AVR8 USART-SPI peripheral driver (thanks to Phil Zakielarz).

BuildTests/ModuleTest/Modules.h

@@ -37,20 +37,20 @@
 #include <LUFA/Drivers/Misc/TerminalCodes.h>
 
 #if (ARCH == ARCH_AVR8)
-	#if defined(TWCR)
-		#include <LUFA/Drivers/Peripheral/TWI.h>
-	#endif
-
 	#if defined(ADC)
 		#include <LUFA/Drivers/Peripheral/ADC.h>
 	#endif
 
 	#include <LUFA/Drivers/Peripheral/Serial.h>
-	#include <LUFA/Drivers/Peripheral/SPI.h>
 	#include <LUFA/Drivers/Peripheral/SerialSPI.h>
-#elif (ARCH == ARCH_XMEGA)
+	#include <LUFA/Drivers/Peripheral/SPI.h>
+
+	#if defined(TWCR)
 		#include <LUFA/Drivers/Peripheral/TWI.h>
+	#endif
+#elif (ARCH == ARCH_XMEGA)
 	#include <LUFA/Drivers/Peripheral/Serial.h>
-	#include <LUFA/Drivers/Peripheral/SPI.h>
 	#include <LUFA/Drivers/Peripheral/SerialSPI.h>
+	#include <LUFA/Drivers/Peripheral/SPI.h>
+	#include <LUFA/Drivers/Peripheral/TWI.h>
 #endif

LUFA/DoxygenPages/ChangeLog.txt

@@ -33,6 +33,7 @@
   *     FLASH memory devices (thanks to demultiplexer)
   *   - Fixed missing parenthesis in the MIDI_EVENT() macro which could cause incorrect results (thanks to hexwab)
   *   - Fixed mixed capitalization of TWI in the XMEGA TWI driver causing compilation failures (thanks to Jacob Schloss)
+  *   - Fixed broken AVR8 USART-SPI peripheral driver (thanks to Phil Zakielarz)
   *  - Library Applications:
   *   - Fixed spurious 0xFE USART byte sent in the USBtoSerial project when the baud rate is changed (thanks to Carl Kjeldsen)
   *   - Fixed blocking USART reads causing low throughput on slow baud rates in the USBtoSerial project (thanks to Nevada Smith)

LUFA/Drivers/Peripheral/AVR8/SerialSPI_AVR8.h

@@ -52,7 +52,7 @@
  *
  *  \code
  *      // Initialize the Master SPI mode USART driver before first use, with 1Mbit baud
- *      SerialSPI_Init((USART_SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_ORDER_MSB_FIRST), 1000000);
+ *      SerialSPI_Init((USART_SPI_SCK_LEAD_RISING | USART_SPI_SAMPLE_LEADING | USART_SPI_ORDER_MSB_FIRST), 1000000);
  *
  *      // Send several bytes, ignoring the returned data
  *      SerialSPI_SendByte(0x01);
@@ -92,6 +92,14 @@
 	/* Private Interface - For use in library only: */
 		#if !defined(__DOXYGEN__)
 			#define SERIAL_SPI_UBBRVAL(Baud)             ((Baud < (F_CPU / 2)) ? ((F_CPU / (2 * Baud)) - 1) : 0)
+
+			/* Master USART SPI mode flag definitions missing in the AVR8 toolchain */
+			#if !defined(UCPHA1)
+				#define UCPHA1                           1
+			#endif
+			#if !defined(UDORD1)
+				#define UDORD1                           2
+			#endif
 		#endif
 
 	/* Public Interface - May be used in end-application: */
@@ -99,28 +107,28 @@
 			/** \name SPI SCK Polarity Configuration Masks */
 			//@{
 			/** SPI clock polarity mask for \ref SPI_Init(). Indicates that the SCK should lead on the rising edge. */
-			#define USART_SPI_SCK_LEAD_RISING            (0 << UCPOL)
+			#define USART_SPI_SCK_LEAD_RISING            (0 << UCPOL1)
 
 			/** SPI clock polarity mask for \ref SPI_Init(). Indicates that the SCK should lead on the falling edge. */
-			#define USART_SPI_SCK_LEAD_FALLING           (1 << UCPOL)
+			#define USART_SPI_SCK_LEAD_FALLING           (1 << UCPOL1)
 			//@}
 
 			/** \name SPI Sample Edge Configuration Masks */
 			//@{
 			/** SPI data sample mode mask for \ref SerialSPI_Init(). Indicates that the data should sampled on the leading edge. */
-			#define USART_SPI_SAMPLE_LEADING             (0 << UPCHA)
+			#define USART_SPI_SAMPLE_LEADING             (0 << UCPHA1)
 
 			/** SPI data sample mode mask for \ref SerialSPI_Init(). Indicates that the data should be sampled on the trailing edge. */
-			#define USART_SPI_SAMPLE_TRAILING            (1 << UPCHA)
+			#define USART_SPI_SAMPLE_TRAILING            (1 << UCPHA1)
 			//@}
 
 			/** \name SPI Data Ordering Configuration Masks */
 			//@{
 			/** SPI data order mask for \ref SerialSPI_Init(). Indicates that data should be shifted out MSB first. */
-			#define USART_SPI_ORDER_MSB_FIRST            (0 << UDORD)
+			#define USART_SPI_ORDER_MSB_FIRST            (0 << UDORD1)
 
 			/** SPI data order mask for \ref SerialSPI_Init(). Indicates that data should be shifted out LSB first. */
-			#define USART_SPI_ORDER_LSB_FIRST            (1 << UDORD)
+			#define USART_SPI_ORDER_LSB_FIRST            (1 << UDORD1)
 			//@}
 
 		/* Inline Functions: */