--- /dev/null
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2017.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ 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
+ 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
+ software without specific, written prior permission.
+
+ The author disclaims all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * Header file for ISPTarget.c.
+ */
+
+#ifndef _ISP_TARGET_
+#define _ISP_TARGET_
+
+ /* Includes: */
+ #include <avr/io.h>
+ #include <avr/pgmspace.h>
+ #include <util/delay.h>
+
+ #include <LUFA/Drivers/USB/USB.h>
+ #include <LUFA/Drivers/Peripheral/SPI.h>
+
+ #include "../V2Protocol.h"
+ #include "ISPProtocol.h"
+ #include "Config/AppConfig.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: */
+ /** Low level device command to issue an extended FLASH address, for devices with over 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: */
+ 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_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)
+ {
+ uint8_t ReceivedByte;
+
+ if (HardwareSPIMode)
+ ReceivedByte = SPI_ReceiveByte();
+ else
+ ReceivedByte = ISPTarget_TransferSoftSPIByte(0x00);
+
+ #if defined(INVERTED_ISP_MISO)
+ return ~ReceivedByte;
+ #else
+ return ReceivedByte;
+ #endif
+ }
+
+ /** 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)
+ {
+ uint8_t ReceivedByte;
+
+ if (HardwareSPIMode)
+ ReceivedByte = SPI_TransferByte(Byte);
+ else
+ ReceivedByte = ISPTarget_TransferSoftSPIByte(Byte);
+
+ #if defined(INVERTED_ISP_MISO)
+ return ~ReceivedByte;
+ #else
+ return ReceivedByte;
+ #endif
+ }
+
+#endif
+
projects / qmk_firmware.git / blobdiff