Added support to the AVRISP-MKII project for ISP speeds slower than 125KHz via a new software SPI driver.

Added new SPI_ORDER_* data order masks to the SPI peripheral driver.

1 files changed, 53 insertions, 6 deletions

diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
index 869e0e58b..967849abd 100644
--- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
+++ b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
@@ -56,21 +56,68 @@
 		#endif
 
 	/* Macros: */
-		/** Total number of allowable ISP programming speeds supported by the device. */
-		#define TOTAL_ISP_PROGRAMMING_SPEEDS  7
-		
 		/** Low level device command to issue an extended FLASH address, for devices with other 128KB of FLASH. */
 		#define LOAD_EXTENDED_ADDRESS_CMD     0x4D
 		
+		/** Macro to convert an ISP frequency to a number of timer clock cycles for the software SPI driver */
+		#define TIMER_COMP(freq) ((((F_CPU / 8) / freq) / 2) - 1)
+
+	/* External Variables: */
+		extern bool HardwareSPIMode;
+
 	/* Function Prototypes: */
-		uint8_t ISPTarget_GetSPIPrescalerMask(void);
+		void    ISPTarget_Init(void);
+		void    ISPTarget_ShutDown(void);
+		uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte);
 		void    ISPTarget_ChangeTargetResetLine(const bool ResetTarget);
+		uint8_t ISPTarget_WaitWhileTargetBusy(void);
+		void    ISPTarget_LoadExtendedAddress(void);
 		uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
 		                                      const uint16_t PollAddress,
 		                                      const uint8_t PollValue,
 		                                      const uint8_t DelayMS,
 		                                      const uint8_t ReadMemCommand);
-		uint8_t ISPTarget_WaitWhileTargetBusy(void);
-		void    ISPTarget_LoadExtendedAddress(void);
+
+	/* Inline Functions: */
+		/** Sends a byte of ISP data to the attached target, using the appropriate SPI hardware or
+		 *  software routines depending on the selected ISP speed.
+		 *
+		 *  \param[in] Byte  Byte of data to send to the attached target
+		 */
+		static inline void ISPTarget_SendByte(const uint8_t Byte)
+		{
+			if (HardwareSPIMode)
+			  SPI_SendByte(Byte);
+			else
+			  ISPTarget_TransferSoftSPIByte(Byte);
+		}
+
+		/** Receives a byte of ISP data from the attached target, using the appropriate
+		 *  SPI hardware or software routines depending on the selected ISP speed.
+		 *
+		 *  \return Received byte of data from the attached target
+		 */
+		static inline uint8_t ISPTarget_ReceiveByte(void)
+		{
+			if (HardwareSPIMode)
+			  return SPI_ReceiveByte();
+			else
+			  return ISPTarget_TransferSoftSPIByte(0x00);
+		}
+
+		/** Sends and receives a byte of ISP data to and from the attached target, using the
+		 *  appropriate SPI hardware or software routines depending on the selected ISP speed.
+		 *
+		 *  \param[in] Byte  Byte of data to send to the attached target
+		 *
+		 *  \return Received byte of data from the attached target
+		 */
+		static inline uint8_t ISPTarget_TransferByte(const uint8_t Byte)
+		{
+			if (HardwareSPIMode)
+			  return SPI_TransferByte(Byte);
+			else
+			  return ISPTarget_TransferSoftSPIByte(Byte);
+		}
 
 #endif