/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2011.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
+ without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
#include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/Peripheral/SPI.h>
-
+
#include "../V2ProtocolParams.h"
/* Preprocessor Checks: */
#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
#undef ENABLE_ISP_PROTOCOL
-
+
#if !defined(ENABLE_XPROG_PROTOCOL)
#define ENABLE_XPROG_PROTOCOL
#endif
#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) / 2 / freq) - 1)
+
+ /** ISP rescue clock speed in Hz, for clocking targets with incorrectly set fuses. */
+ #define ISP_RESCUE_CLOCK_SPEED 4000000
+
+ /* External Variables: */
+ extern bool HardwareSPIMode;
+
/* Function Prototypes: */
- uint8_t ISPTarget_GetSPIPrescalerMask(void);
+ void ISPTarget_EnableTargetISP(void);
+ void ISPTarget_DisableTargetISP(void);
+ void ISPTarget_ConfigureRescueClock(void);
+ void ISPTarget_ConfigureSoftwareSPI(const uint8_t SCKDuration);
+ uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte);
void ISPTarget_ChangeTargetResetLine(const bool ResetTarget);
- 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);
+ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
+ const uint16_t PollAddress,
+ const uint8_t PollValue,
+ const uint8_t DelayMS,
+ const uint8_t ReadMemCommand);
+
+ /* 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
+