summaryrefslogtreecommitdiff
path: root/lib/lufa/Projects/AVRISP-MKII/Lib/ISP
diff options
context:
space:
mode:
Diffstat (limited to 'lib/lufa/Projects/AVRISP-MKII/Lib/ISP')
-rw-r--r--lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c531
-rw-r--r--lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.h81
-rw-r--r--lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c370
-rw-r--r--lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h147
4 files changed, 1129 insertions, 0 deletions
diff --git a/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
new file mode 100644
index 0000000000..6553504d5e
--- /dev/null
+++ b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
@@ -0,0 +1,531 @@
+/*
+ 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
+ *
+ * ISP Protocol handler, to process V2 Protocol wrapped ISP commands used in Atmel programmer devices.
+ */
+
+#include "ISPProtocol.h"
+
+#if defined(ENABLE_ISP_PROTOCOL) || defined(__DOXYGEN__)
+
+/** Handler for the CMD_ENTER_PROGMODE_ISP command, which attempts to enter programming mode on
+ * the attached device, returning success or failure back to the host.
+ */
+void ISPProtocol_EnterISPMode(void)
+{
+ struct
+ {
+ uint8_t TimeoutMS;
+ uint8_t PinStabDelayMS;
+ uint8_t ExecutionDelayMS;
+ uint8_t SynchLoops;
+ uint8_t ByteDelay;
+ uint8_t PollValue;
+ uint8_t PollIndex;
+ uint8_t EnterProgBytes[4];
+ } Enter_ISP_Params;
+
+ Endpoint_Read_Stream_LE(&Enter_ISP_Params, sizeof(Enter_ISP_Params), NULL);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ uint8_t ResponseStatus = STATUS_CMD_FAILED;
+
+ CurrentAddress = 0;
+
+ /* Perform execution delay, initialize SPI bus */
+ ISPProtocol_DelayMS(Enter_ISP_Params.ExecutionDelayMS);
+ ISPTarget_EnableTargetISP();
+
+ ISPTarget_ChangeTargetResetLine(true);
+ ISPProtocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
+
+ /* Continuously attempt to synchronize with the target until either the number of attempts specified
+ * by the host has exceeded, or the the device sends back the expected response values */
+ while (Enter_ISP_Params.SynchLoops-- && TimeoutTicksRemaining)
+ {
+ uint8_t ResponseBytes[4];
+
+ for (uint8_t RByte = 0; RByte < sizeof(ResponseBytes); RByte++)
+ {
+ ISPProtocol_DelayMS(Enter_ISP_Params.ByteDelay);
+ ResponseBytes[RByte] = ISPTarget_TransferByte(Enter_ISP_Params.EnterProgBytes[RByte]);
+ }
+
+ /* Check if polling disabled, or if the polled value matches the expected value */
+ if (!(Enter_ISP_Params.PollIndex) || (ResponseBytes[Enter_ISP_Params.PollIndex - 1] == Enter_ISP_Params.PollValue))
+ {
+ ResponseStatus = STATUS_CMD_OK;
+ break;
+ }
+ else
+ {
+ ISPTarget_ChangeTargetResetLine(false);
+ ISPProtocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
+ ISPTarget_ChangeTargetResetLine(true);
+ ISPProtocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
+ }
+ }
+
+ Endpoint_Write_8(CMD_ENTER_PROGMODE_ISP);
+ Endpoint_Write_8(ResponseStatus);
+ Endpoint_ClearIN();
+}
+
+/** Handler for the CMD_LEAVE_ISP command, which releases the target from programming mode. */
+void ISPProtocol_LeaveISPMode(void)
+{
+ struct
+ {
+ uint8_t PreDelayMS;
+ uint8_t PostDelayMS;
+ } Leave_ISP_Params;
+
+ Endpoint_Read_Stream_LE(&Leave_ISP_Params, sizeof(Leave_ISP_Params), NULL);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ /* Perform pre-exit delay, release the target /RESET, disable the SPI bus and perform the post-exit delay */
+ ISPProtocol_DelayMS(Leave_ISP_Params.PreDelayMS);
+ ISPTarget_ChangeTargetResetLine(false);
+ ISPTarget_DisableTargetISP();
+ ISPProtocol_DelayMS(Leave_ISP_Params.PostDelayMS);
+
+ Endpoint_Write_8(CMD_LEAVE_PROGMODE_ISP);
+ Endpoint_Write_8(STATUS_CMD_OK);
+ Endpoint_ClearIN();
+}
+
+/** Handler for the CMD_PROGRAM_FLASH_ISP and CMD_PROGRAM_EEPROM_ISP commands, writing out bytes,
+ * words or pages of data to the attached device.
+ *
+ * \param[in] V2Command Issued V2 Protocol command byte from the host
+ */
+void ISPProtocol_ProgramMemory(uint8_t V2Command)
+{
+ struct
+ {
+ uint16_t BytesToWrite;
+ uint8_t ProgrammingMode;
+ uint8_t DelayMS;
+ uint8_t ProgrammingCommands[3];
+ uint8_t PollValue1;
+ uint8_t PollValue2;
+ uint8_t ProgData[256]; // Note, the Jungo driver has a very short ACK timeout period, need to buffer the
+ } Write_Memory_Params; // whole page and ACK the packet as fast as possible to prevent it from aborting
+
+ Endpoint_Read_Stream_LE(&Write_Memory_Params, (sizeof(Write_Memory_Params) -
+ sizeof(Write_Memory_Params.ProgData)), NULL);
+ Write_Memory_Params.BytesToWrite = SwapEndian_16(Write_Memory_Params.BytesToWrite);
+
+ if (Write_Memory_Params.BytesToWrite > sizeof(Write_Memory_Params.ProgData))
+ {
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ Endpoint_Write_8(V2Command);
+ Endpoint_Write_8(STATUS_CMD_FAILED);
+ Endpoint_ClearIN();
+ return;
+ }
+
+ Endpoint_Read_Stream_LE(&Write_Memory_Params.ProgData, Write_Memory_Params.BytesToWrite, NULL);
+
+ // The driver will terminate transfers that are a round multiple of the endpoint bank in size with a ZLP, need
+ // to catch this and discard it before continuing on with packet processing to prevent communication issues
+ if (((sizeof(uint8_t) + sizeof(Write_Memory_Params) - sizeof(Write_Memory_Params.ProgData)) +
+ Write_Memory_Params.BytesToWrite) % AVRISP_DATA_EPSIZE == 0)
+ {
+ Endpoint_ClearOUT();
+ Endpoint_WaitUntilReady();
+ }
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ uint8_t ProgrammingStatus = STATUS_CMD_OK;
+ uint8_t PollValue = (V2Command == CMD_PROGRAM_FLASH_ISP) ? Write_Memory_Params.PollValue1 :
+ Write_Memory_Params.PollValue2;
+ uint16_t PollAddress = 0;
+ uint8_t* NextWriteByte = Write_Memory_Params.ProgData;
+ uint16_t PageStartAddress = (CurrentAddress & 0xFFFF);
+
+ for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
+ {
+ uint8_t ByteToWrite = *(NextWriteByte++);
+ uint8_t ProgrammingMode = Write_Memory_Params.ProgrammingMode;
+
+ /* Check to see if we need to send a LOAD EXTENDED ADDRESS command to the target */
+ if (MustLoadExtendedAddress)
+ {
+ ISPTarget_LoadExtendedAddress();
+ MustLoadExtendedAddress = false;
+ }
+
+ ISPTarget_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
+ ISPTarget_SendByte(CurrentAddress >> 8);
+ ISPTarget_SendByte(CurrentAddress & 0xFF);
+ ISPTarget_SendByte(ByteToWrite);
+
+ /* AVR FLASH addressing requires us to modify the write command based on if we are writing a high
+ * or low byte at the current word address */
+ if (V2Command == CMD_PROGRAM_FLASH_ISP)
+ Write_Memory_Params.ProgrammingCommands[0] ^= READ_WRITE_HIGH_BYTE_MASK;
+
+ /* Check to see if we have a valid polling address */
+ if (!(PollAddress) && (ByteToWrite != PollValue))
+ {
+ if ((CurrentByte & 0x01) && (V2Command == CMD_PROGRAM_FLASH_ISP))
+ Write_Memory_Params.ProgrammingCommands[2] |= READ_WRITE_HIGH_BYTE_MASK;
+ else
+ Write_Memory_Params.ProgrammingCommands[2] &= ~READ_WRITE_HIGH_BYTE_MASK;
+
+ PollAddress = (CurrentAddress & 0xFFFF);
+ }
+
+ /* If in word programming mode, commit the byte to the target's memory */
+ if (!(ProgrammingMode & PROG_MODE_PAGED_WRITES_MASK))
+ {
+ /* If the current polling address is invalid, switch to timed delay write completion mode */
+ if (!(PollAddress) && !(ProgrammingMode & PROG_MODE_WORD_READYBUSY_MASK))
+ ProgrammingMode = (ProgrammingMode & ~PROG_MODE_WORD_VALUE_MASK) | PROG_MODE_WORD_TIMEDELAY_MASK;
+
+ ProgrammingStatus = ISPTarget_WaitForProgComplete(ProgrammingMode, PollAddress, PollValue,
+ Write_Memory_Params.DelayMS,
+ Write_Memory_Params.ProgrammingCommands[2]);
+
+ /* Abort the programming loop early if the byte/word programming failed */
+ if (ProgrammingStatus != STATUS_CMD_OK)
+ break;
+
+ /* Must reset the polling address afterwards, so it is not erroneously used for the next byte */
+ PollAddress = 0;
+ }
+
+ /* EEPROM just increments the address each byte, flash needs to increment on each word and
+ * also check to ensure that a LOAD EXTENDED ADDRESS command is issued each time the extended
+ * address boundary has been crossed during FLASH memory programming */
+ if ((CurrentByte & 0x01) || (V2Command == CMD_PROGRAM_EEPROM_ISP))
+ {
+ CurrentAddress++;
+
+ if ((V2Command == CMD_PROGRAM_FLASH_ISP) && !(CurrentAddress & 0xFFFF))
+ MustLoadExtendedAddress = true;
+ }
+ }
+
+ /* If the current page must be committed, send the PROGRAM PAGE command to the target */
+ if (Write_Memory_Params.ProgrammingMode & PROG_MODE_COMMIT_PAGE_MASK)
+ {
+ ISPTarget_SendByte(Write_Memory_Params.ProgrammingCommands[1]);
+ ISPTarget_SendByte(PageStartAddress >> 8);
+ ISPTarget_SendByte(PageStartAddress & 0xFF);
+ ISPTarget_SendByte(0x00);
+
+ /* Check if polling is enabled and possible, if not switch to timed delay mode */
+ if ((Write_Memory_Params.ProgrammingMode & PROG_MODE_PAGED_VALUE_MASK) && !(PollAddress))
+ {
+ Write_Memory_Params.ProgrammingMode = (Write_Memory_Params.ProgrammingMode & ~PROG_MODE_PAGED_VALUE_MASK) |
+ PROG_MODE_PAGED_TIMEDELAY_MASK;
+ }
+
+ ProgrammingStatus = ISPTarget_WaitForProgComplete(Write_Memory_Params.ProgrammingMode, PollAddress, PollValue,
+ Write_Memory_Params.DelayMS,
+ Write_Memory_Params.ProgrammingCommands[2]);
+
+ /* Check to see if the FLASH address has crossed the extended address boundary */
+ if ((V2Command == CMD_PROGRAM_FLASH_ISP) && !(CurrentAddress & 0xFFFF))
+ MustLoadExtendedAddress = true;
+ }
+
+ Endpoint_Write_8(V2Command);
+ Endpoint_Write_8(ProgrammingStatus);
+ Endpoint_ClearIN();
+}
+
+/** Handler for the CMD_READ_FLASH_ISP and CMD_READ_EEPROM_ISP commands, reading in bytes,
+ * words or pages of data from the attached device.
+ *
+ * \param[in] V2Command Issued V2 Protocol command byte from the host
+ */
+void ISPProtocol_ReadMemory(uint8_t V2Command)
+{
+ struct
+ {
+ uint16_t BytesToRead;
+ uint8_t ReadMemoryCommand;
+ } Read_Memory_Params;
+
+ Endpoint_Read_Stream_LE(&Read_Memory_Params, sizeof(Read_Memory_Params), NULL);
+ Read_Memory_Params.BytesToRead = SwapEndian_16(Read_Memory_Params.BytesToRead);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ Endpoint_Write_8(V2Command);
+ Endpoint_Write_8(STATUS_CMD_OK);
+
+ /* Read each byte from the device and write them to the packet for the host */
+ for (uint16_t CurrentByte = 0; CurrentByte < Read_Memory_Params.BytesToRead; CurrentByte++)
+ {
+ /* Check to see if we need to send a LOAD EXTENDED ADDRESS command to the target */
+ if (MustLoadExtendedAddress)
+ {
+ ISPTarget_LoadExtendedAddress();
+ MustLoadExtendedAddress = false;
+ }
+
+ /* Read the next byte from the desired memory space in the device */
+ ISPTarget_SendByte(Read_Memory_Params.ReadMemoryCommand);
+ ISPTarget_SendByte(CurrentAddress >> 8);
+ ISPTarget_SendByte(CurrentAddress & 0xFF);
+ Endpoint_Write_8(ISPTarget_ReceiveByte());
+
+ /* Check if the endpoint bank is currently full, if so send the packet */
+ if (!(Endpoint_IsReadWriteAllowed()))
+ {
+ Endpoint_ClearIN();
+ Endpoint_WaitUntilReady();
+ }
+
+ /* AVR FLASH addressing requires us to modify the read command based on if we are reading a high
+ * or low byte at the current word address */
+ if (V2Command == CMD_READ_FLASH_ISP)
+ Read_Memory_Params.ReadMemoryCommand ^= READ_WRITE_HIGH_BYTE_MASK;
+
+ /* EEPROM just increments the address each byte, flash needs to increment on each word and
+ * also check to ensure that a LOAD EXTENDED ADDRESS command is issued each time the extended
+ * address boundary has been crossed */
+ if ((CurrentByte & 0x01) || (V2Command == CMD_READ_EEPROM_ISP))
+ {
+ CurrentAddress++;
+
+ if ((V2Command != CMD_READ_EEPROM_ISP) && !(CurrentAddress & 0xFFFF))
+ MustLoadExtendedAddress = true;
+ }
+ }
+
+ Endpoint_Write_8(STATUS_CMD_OK);
+
+ bool IsEndpointFull = !(Endpoint_IsReadWriteAllowed());
+ Endpoint_ClearIN();
+
+ /* Ensure last packet is a short packet to terminate the transfer */
+ if (IsEndpointFull)
+ {
+ Endpoint_WaitUntilReady();
+ Endpoint_ClearIN();
+ Endpoint_WaitUntilReady();
+ }
+}
+
+/** Handler for the CMD_CHI_ERASE_ISP command, clearing the target's FLASH memory. */
+void ISPProtocol_ChipErase(void)
+{
+ struct
+ {
+ uint8_t EraseDelayMS;
+ uint8_t PollMethod;
+ uint8_t EraseCommandBytes[4];
+ } Erase_Chip_Params;
+
+ Endpoint_Read_Stream_LE(&Erase_Chip_Params, sizeof(Erase_Chip_Params), NULL);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ uint8_t ResponseStatus = STATUS_CMD_OK;
+
+ /* Send the chip erase commands as given by the host to the device */
+ for (uint8_t SByte = 0; SByte < sizeof(Erase_Chip_Params.EraseCommandBytes); SByte++)
+ ISPTarget_SendByte(Erase_Chip_Params.EraseCommandBytes[SByte]);
+
+ /* Use appropriate command completion check as given by the host (delay or busy polling) */
+ if (!(Erase_Chip_Params.PollMethod))
+ ISPProtocol_DelayMS(Erase_Chip_Params.EraseDelayMS);
+ else
+ ResponseStatus = ISPTarget_WaitWhileTargetBusy();
+
+ Endpoint_Write_8(CMD_CHIP_ERASE_ISP);
+ Endpoint_Write_8(ResponseStatus);
+ Endpoint_ClearIN();
+}
+
+/** Handler for the CMD_READ_FUSE_ISP, CMD_READ_LOCK_ISP, CMD_READ_SIGNATURE_ISP and CMD_READ_OSCCAL commands,
+ * reading the requested configuration byte from the device.
+ *
+ * \param[in] V2Command Issued V2 Protocol command byte from the host
+ */
+void ISPProtocol_ReadFuseLockSigOSCCAL(uint8_t V2Command)
+{
+ struct
+ {
+ uint8_t RetByte;
+ uint8_t ReadCommandBytes[4];
+ } Read_FuseLockSigOSCCAL_Params;
+
+ Endpoint_Read_Stream_LE(&Read_FuseLockSigOSCCAL_Params, sizeof(Read_FuseLockSigOSCCAL_Params), NULL);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ uint8_t ResponseBytes[4];
+
+ /* Send the Fuse or Lock byte read commands as given by the host to the device, store response */
+ for (uint8_t RByte = 0; RByte < sizeof(ResponseBytes); RByte++)
+ ResponseBytes[RByte] = ISPTarget_TransferByte(Read_FuseLockSigOSCCAL_Params.ReadCommandBytes[RByte]);
+
+ Endpoint_Write_8(V2Command);
+ Endpoint_Write_8(STATUS_CMD_OK);
+ Endpoint_Write_8(ResponseBytes[Read_FuseLockSigOSCCAL_Params.RetByte - 1]);
+ Endpoint_Write_8(STATUS_CMD_OK);
+ Endpoint_ClearIN();
+}
+
+/** Handler for the CMD_WRITE_FUSE_ISP and CMD_WRITE_LOCK_ISP commands, writing the requested configuration
+ * byte to the device.
+ *
+ * \param[in] V2Command Issued V2 Protocol command byte from the host
+ */
+void ISPProtocol_WriteFuseLock(uint8_t V2Command)
+{
+ struct
+ {
+ uint8_t WriteCommandBytes[4];
+ } Write_FuseLockSig_Params;
+
+ Endpoint_Read_Stream_LE(&Write_FuseLockSig_Params, sizeof(Write_FuseLockSig_Params), NULL);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ /* Send the Fuse or Lock byte program commands as given by the host to the device */
+ for (uint8_t SByte = 0; SByte < sizeof(Write_FuseLockSig_Params.WriteCommandBytes); SByte++)
+ ISPTarget_SendByte(Write_FuseLockSig_Params.WriteCommandBytes[SByte]);
+
+ Endpoint_Write_8(V2Command);
+ Endpoint_Write_8(STATUS_CMD_OK);
+ Endpoint_Write_8(STATUS_CMD_OK);
+ Endpoint_ClearIN();
+}
+
+/** Handler for the CMD_SPI_MULTI command, writing and reading arbitrary SPI data to and from the attached device. */
+void ISPProtocol_SPIMulti(void)
+{
+ struct
+ {
+ uint8_t TxBytes;
+ uint8_t RxBytes;
+ uint8_t RxStartAddr;
+ uint8_t TxData[255];
+ } SPI_Multi_Params;
+
+ Endpoint_Read_Stream_LE(&SPI_Multi_Params, (sizeof(SPI_Multi_Params) - sizeof(SPI_Multi_Params.TxData)), NULL);
+ Endpoint_Read_Stream_LE(&SPI_Multi_Params.TxData, SPI_Multi_Params.TxBytes, NULL);
+
+ Endpoint_ClearOUT();
+ Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPADDR);
+ Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+
+ Endpoint_Write_8(CMD_SPI_MULTI);
+ Endpoint_Write_8(STATUS_CMD_OK);
+
+ uint8_t CurrTxPos = 0;
+ uint8_t CurrRxPos = 0;
+
+ /* Write out bytes to transmit until the start of the bytes to receive is met */
+ while (CurrTxPos < SPI_Multi_Params.RxStartAddr)
+ {
+ if (CurrTxPos < SPI_Multi_Params.TxBytes)
+ ISPTarget_SendByte(SPI_Multi_Params.TxData[CurrTxPos]);
+ else
+ ISPTarget_SendByte(0);
+
+ CurrTxPos++;
+ }
+
+ /* Transmit remaining bytes with padding as needed, read in response bytes */
+ while (CurrRxPos < SPI_Multi_Params.RxBytes)
+ {
+ if (CurrTxPos < SPI_Multi_Params.TxBytes)
+ Endpoint_Write_8(ISPTarget_TransferByte(SPI_Multi_Params.TxData[CurrTxPos++]));
+ else
+ Endpoint_Write_8(ISPTarget_ReceiveByte());
+
+ /* Check to see if we have filled the endpoint bank and need to send the packet */
+ if (!(Endpoint_IsReadWriteAllowed()))
+ {
+ Endpoint_ClearIN();
+ Endpoint_WaitUntilReady();
+ }
+
+ CurrRxPos++;
+ }
+
+ Endpoint_Write_8(STATUS_CMD_OK);
+
+ bool IsEndpointFull = !(Endpoint_IsReadWriteAllowed());
+ Endpoint_ClearIN();
+
+ /* Ensure last packet is a short packet to terminate the transfer */
+ if (IsEndpointFull)
+ {
+ Endpoint_WaitUntilReady();
+ Endpoint_ClearIN();
+ Endpoint_WaitUntilReady();
+ }
+}
+
+/** Blocking delay for a given number of milliseconds. This provides a simple wrapper around
+ * the avr-libc provided delay function, so that the delay function can be called with a
+ * constant value (to prevent run-time floating point operations being required).
+ *
+ * \param[in] DelayMS Number of milliseconds to delay for
+ */
+void ISPProtocol_DelayMS(uint8_t DelayMS)
+{
+ while (DelayMS-- && TimeoutTicksRemaining)
+ Delay_MS(1);
+}
+
+#endif
+
diff --git a/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.h b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.h
new file mode 100644
index 0000000000..44b339762d
--- /dev/null
+++ b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.h
@@ -0,0 +1,81 @@
+/*
+ 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 ISPProtocol.c.
+ */
+
+#ifndef _ISP_PROTOCOL_
+#define _ISP_PROTOCOL_
+
+ /* Includes: */
+ #include <avr/io.h>
+ #include <util/delay.h>
+
+ #include <LUFA/Drivers/USB/USB.h>
+
+ #include "../V2Protocol.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: */
+ /** Mask for the reading or writing of the high byte in a FLASH word when issuing a low-level programming command. */
+ #define READ_WRITE_HIGH_BYTE_MASK (1 << 3)
+
+ #define PROG_MODE_PAGED_WRITES_MASK (1 << 0)
+ #define PROG_MODE_WORD_TIMEDELAY_MASK (1 << 1)
+ #define PROG_MODE_WORD_VALUE_MASK (1 << 2)
+ #define PROG_MODE_WORD_READYBUSY_MASK (1 << 3)
+ #define PROG_MODE_PAGED_TIMEDELAY_MASK (1 << 4)
+ #define PROG_MODE_PAGED_VALUE_MASK (1 << 5)
+ #define PROG_MODE_PAGED_READYBUSY_MASK (1 << 6)
+ #define PROG_MODE_COMMIT_PAGE_MASK (1 << 7)
+
+ /* Function Prototypes: */
+ void ISPProtocol_EnterISPMode(void);
+ void ISPProtocol_LeaveISPMode(void);
+ void ISPProtocol_ProgramMemory(const uint8_t V2Command);
+ void ISPProtocol_ReadMemory(const uint8_t V2Command);
+ void ISPProtocol_ChipErase(void);
+ void ISPProtocol_ReadFuseLockSigOSCCAL(const uint8_t V2Command);
+ void ISPProtocol_WriteFuseLock(const uint8_t V2Command);
+ void ISPProtocol_SPIMulti(void);
+ void ISPProtocol_DelayMS(uint8_t DelayMS);
+#endif
+
diff --git a/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
new file mode 100644
index 0000000000..197b62275d
--- /dev/null
+++ b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
@@ -0,0 +1,370 @@
+/*
+ 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
+ *
+ * Target-related functions for the ISP Protocol decoder.
+ */
+
+#include "ISPTarget.h"
+
+#if defined(ENABLE_ISP_PROTOCOL) || defined(__DOXYGEN__)
+
+/** List of hardware SPI prescaler masks for possible AVRStudio ISP programming speeds.
+ *
+ * \hideinitializer
+ */
+static const uint8_t SPIMaskFromSCKDuration[] PROGMEM =
+{
+#if (F_CPU == 8000000)
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 4MHz SPI
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI
+ SPI_SPEED_FCPU_DIV_64, // AVRStudio = 125KHz SPI, Actual = 125KHz SPI
+#elif (F_CPU == 16000000)
+ SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 8MHz SPI
+ SPI_SPEED_FCPU_DIV_4, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI
+ SPI_SPEED_FCPU_DIV_8, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI
+ SPI_SPEED_FCPU_DIV_16, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI
+ SPI_SPEED_FCPU_DIV_32, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI
+ SPI_SPEED_FCPU_DIV_64, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI
+ SPI_SPEED_FCPU_DIV_128 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI
+#else
+ #error No SPI prescaler masks for chosen F_CPU speed.
+#endif
+};
+
+/** Lookup table to convert the slower ISP speeds into a compare value for the software SPI driver.
+ *
+ * \hideinitializer
+ */
+static const uint16_t TimerCompareFromSCKDuration[] PROGMEM =
+{
+ TIMER_COMP(96386), TIMER_COMP(89888), TIMER_COMP(84211), TIMER_COMP(79208), TIMER_COMP(74767),
+ TIMER_COMP(70797), TIMER_COMP(67227), TIMER_COMP(64000), TIMER_COMP(61069), TIMER_COMP(58395),
+ TIMER_COMP(55945), TIMER_COMP(51613), TIMER_COMP(49690), TIMER_COMP(47905), TIMER_COMP(46243),
+ TIMER_COMP(43244), TIMER_COMP(41885), TIMER_COMP(39409), TIMER_COMP(38278), TIMER_COMP(36200),
+ TIMER_COMP(34335), TIMER_COMP(32654), TIMER_COMP(31129), TIMER_COMP(29740), TIMER_COMP(28470),
+ TIMER_COMP(27304), TIMER_COMP(25724), TIMER_COMP(24768), TIMER_COMP(23461), TIMER_COMP(22285),
+ TIMER_COMP(21221), TIMER_COMP(20254), TIMER_COMP(19371), TIMER_COMP(18562), TIMER_COMP(17583),
+ TIMER_COMP(16914), TIMER_COMP(16097), TIMER_COMP(15356), TIMER_COMP(14520), TIMER_COMP(13914),
+ TIMER_COMP(13224), TIMER_COMP(12599), TIMER_COMP(12031), TIMER_COMP(11511), TIMER_COMP(10944),
+ TIMER_COMP(10431), TIMER_COMP(9963), TIMER_COMP(9468), TIMER_COMP(9081), TIMER_COMP(8612),
+ TIMER_COMP(8239), TIMER_COMP(7851), TIMER_COMP(7498), TIMER_COMP(7137), TIMER_COMP(6809),
+ TIMER_COMP(6478), TIMER_COMP(6178), TIMER_COMP(5879), TIMER_COMP(5607), TIMER_COMP(5359),
+ TIMER_COMP(5093), TIMER_COMP(4870), TIMER_COMP(4633), TIMER_COMP(4418), TIMER_COMP(4209),
+ TIMER_COMP(4019), TIMER_COMP(3823), TIMER_COMP(3645), TIMER_COMP(3474), TIMER_COMP(3310),
+ TIMER_COMP(3161), TIMER_COMP(3011), TIMER_COMP(2869), TIMER_COMP(2734), TIMER_COMP(2611),
+ TIMER_COMP(2484), TIMER_COMP(2369), TIMER_COMP(2257), TIMER_COMP(2152), TIMER_COMP(2052),
+ TIMER_COMP(1956), TIMER_COMP(1866), TIMER_COMP(1779), TIMER_COMP(1695), TIMER_COMP(1615),
+ TIMER_COMP(1539), TIMER_COMP(1468), TIMER_COMP(1398), TIMER_COMP(1333), TIMER_COMP(1271),
+ TIMER_COMP(1212), TIMER_COMP(1155), TIMER_COMP(1101), TIMER_COMP(1049), TIMER_COMP(1000),
+ TIMER_COMP(953), TIMER_COMP(909), TIMER_COMP(866), TIMER_COMP(826), TIMER_COMP(787),
+ TIMER_COMP(750), TIMER_COMP(715), TIMER_COMP(682), TIMER_COMP(650), TIMER_COMP(619),
+ TIMER_COMP(590), TIMER_COMP(563), TIMER_COMP(536), TIMER_COMP(511), TIMER_COMP(487),
+ TIMER_COMP(465), TIMER_COMP(443), TIMER_COMP(422), TIMER_COMP(402), TIMER_COMP(384),
+ TIMER_COMP(366), TIMER_COMP(349), TIMER_COMP(332), TIMER_COMP(317), TIMER_COMP(302),
+ TIMER_COMP(288), TIMER_COMP(274), TIMER_COMP(261), TIMER_COMP(249), TIMER_COMP(238),
+ TIMER_COMP(226), TIMER_COMP(216), TIMER_COMP(206), TIMER_COMP(196), TIMER_COMP(187),
+ TIMER_COMP(178), TIMER_COMP(170), TIMER_COMP(162), TIMER_COMP(154), TIMER_COMP(147),
+ TIMER_COMP(140), TIMER_COMP(134), TIMER_COMP(128), TIMER_COMP(122), TIMER_COMP(116),
+ TIMER_COMP(111), TIMER_COMP(105), TIMER_COMP(100), TIMER_COMP(95.4), TIMER_COMP(90.9),
+ TIMER_COMP(86.6), TIMER_COMP(82.6), TIMER_COMP(78.7), TIMER_COMP(75.0), TIMER_COMP(71.5),
+ TIMER_COMP(68.2), TIMER_COMP(65.0), TIMER_COMP(61.9), TIMER_COMP(59.0), TIMER_COMP(56.3),
+ TIMER_COMP(53.6), TIMER_COMP(51.1)
+};
+
+/** Currently selected SPI driver, either hardware (for fast ISP speeds) or software (for slower ISP speeds). */
+bool HardwareSPIMode = true;
+
+/** Software SPI data register for sending and receiving */
+static volatile uint8_t SoftSPI_Data;
+
+/** Number of bits left to transfer in the software SPI driver */
+static volatile uint8_t SoftSPI_BitsRemaining;
+
+
+/** ISR to handle software SPI transmission and reception */
+ISR(TIMER1_COMPA_vect, ISR_BLOCK)
+{
+ /* Check if rising edge (output next bit) or falling edge (read in next bit) */
+ if (!(PINB & (1 << 1)))
+ {
+ if (SoftSPI_Data & (1 << 7))
+ PORTB |= (1 << 2);
+ else
+ PORTB &= ~(1 << 2);
+ }
+ else
+ {
+ SoftSPI_Data <<= 1;
+
+ if (!(--SoftSPI_BitsRemaining))
+ {
+ TCCR1B = 0;
+ TIFR1 = (1 << OCF1A);
+ }
+
+ if (PINB & (1 << 3))
+ SoftSPI_Data |= (1 << 0);
+ }
+
+ /* Fast toggle of PORTB.1 via the PIN register (see datasheet) */
+ PINB |= (1 << 1);
+}
+
+/** Initializes the appropriate SPI driver (hardware or software, depending on the selected ISP speed) ready for
+ * communication with the attached target.
+ */
+void ISPTarget_EnableTargetISP(void)
+{
+ uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
+
+ if (SCKDuration < sizeof(SPIMaskFromSCKDuration))
+ {
+ HardwareSPIMode = true;
+
+ SPI_Init(pgm_read_byte(&SPIMaskFromSCKDuration[SCKDuration]) | SPI_ORDER_MSB_FIRST |
+ SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_MODE_MASTER);
+ }
+ else
+ {
+ HardwareSPIMode = false;
+
+ DDRB |= ((1 << 1) | (1 << 2));
+ PORTB |= ((1 << 0) | (1 << 3));
+
+ ISPTarget_ConfigureSoftwareSPI(SCKDuration);
+ }
+}
+
+/** Shuts down the current selected SPI driver (hardware or software, depending on the selected ISP speed) so that no
+ * further communications can occur until the driver is re-initialized.
+ */
+void ISPTarget_DisableTargetISP(void)
+{
+ if (HardwareSPIMode)
+ {
+ SPI_Disable();
+ }
+ else
+ {
+ DDRB &= ~((1 << 1) | (1 << 2));
+ PORTB &= ~((1 << 0) | (1 << 3));
+
+ /* Must re-enable rescue clock once software ISP has exited, as the timer for the rescue clock is
+ * re-purposed for software SPI */
+ ISPTarget_ConfigureRescueClock();
+ }
+}
+
+/** Configures the AVR to produce a 4MHz rescue clock out of the OCR1A pin of the AVR, so
+ * that it can be fed into the XTAL1 pin of an AVR whose fuses have been mis-configured for
+ * an external clock rather than a crystal. When used, the ISP speed must be 125KHz for this
+ * functionality to work correctly.
+ */
+void ISPTarget_ConfigureRescueClock(void)
+{
+ #if defined(XCK_RESCUE_CLOCK_ENABLE)
+ /* Configure XCK as an output for the specified AVR model */
+ DDRD |= (1 << 5);
+
+ /* Start USART to generate a 4MHz clock on the XCK pin */
+ UBRR1 = ((F_CPU / 2 / ISP_RESCUE_CLOCK_SPEED) - 1);
+ UCSR1B = (1 << TXEN1);
+ UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
+ #else
+ /* Configure OCR1A as an output for the specified AVR model */
+ #if defined(USB_SERIES_2_AVR)
+ DDRC |= (1 << 6);
+ #else
+ DDRB |= (1 << 5);
+ #endif
+
+ /* Start Timer 1 to generate a 4MHz clock on the OCR1A pin */
+ TIMSK1 = 0;
+ TCNT1 = 0;
+ OCR1A = ((F_CPU / 2 / ISP_RESCUE_CLOCK_SPEED) - 1);
+ TCCR1A = (1 << COM1A0);
+ TCCR1B = ((1 << WGM12) | (1 << CS10));
+ #endif
+}
+
+/** Configures the AVR's timer ready to produce software SPI for the slower ISP speeds that
+ * cannot be obtained when using the AVR's hardware SPI module.
+ *
+ * \param[in] SCKDuration Duration of the desired software ISP SCK clock
+ */
+void ISPTarget_ConfigureSoftwareSPI(const uint8_t SCKDuration)
+{
+ /* Configure Timer 1 for software SPI using the specified SCK duration */
+ TIMSK1 = (1 << OCIE1A);
+ TCNT1 = 0;
+ OCR1A = pgm_read_word(&TimerCompareFromSCKDuration[SCKDuration - sizeof(SPIMaskFromSCKDuration)]);
+ TCCR1A = 0;
+ TCCR1B = 0;
+}
+
+/** Sends and receives a single byte of data to and from the attached target via software SPI.
+ *
+ * \param[in] Byte Byte of data to send to the attached target
+ *
+ * \return Received byte of data from the attached target
+ */
+uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte)
+{
+ SoftSPI_Data = Byte;
+ SoftSPI_BitsRemaining = 8;
+
+ /* Set initial MOSI pin state according to the byte to be transferred */
+ if (SoftSPI_Data & (1 << 7))
+ PORTB |= (1 << 2);
+ else
+ PORTB &= ~(1 << 2);
+
+ TCNT1 = 0;
+ TCCR1B = ((1 << WGM12) | (1 << CS11));
+ while (SoftSPI_BitsRemaining && TimeoutTicksRemaining);
+ TCCR1B = 0;
+
+ return SoftSPI_Data;
+}
+
+/** Asserts or deasserts the target's reset line, using the correct polarity as set by the host using a SET PARAM command.
+ * When not asserted, the line is tristated so as not to interfere with normal device operation.
+ *
+ * \param[in] ResetTarget Boolean true when the target should be held in reset, \c false otherwise
+ */
+void ISPTarget_ChangeTargetResetLine(const bool ResetTarget)
+{
+ if (ResetTarget)
+ {
+ AUX_LINE_DDR |= AUX_LINE_MASK;
+
+ if (!(V2Params_GetParameterValue(PARAM_RESET_POLARITY)))
+ AUX_LINE_PORT |= AUX_LINE_MASK;
+ else
+ AUX_LINE_PORT &= ~AUX_LINE_MASK;
+ }
+ else
+ {
+ AUX_LINE_DDR &= ~AUX_LINE_MASK;
+ AUX_LINE_PORT &= ~AUX_LINE_MASK;
+ }
+}
+
+/** Waits until the target has completed the last operation, by continuously polling the device's
+ * BUSY flag until it is cleared, or until the command timeout period has expired.
+ *
+ * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise
+ */
+uint8_t ISPTarget_WaitWhileTargetBusy(void)
+{
+ do
+ {
+ ISPTarget_SendByte(0xF0);
+ ISPTarget_SendByte(0x00);
+ ISPTarget_SendByte(0x00);
+ }
+ while ((ISPTarget_ReceiveByte() & 0x01) && TimeoutTicksRemaining);
+
+ return (TimeoutTicksRemaining > 0) ? STATUS_CMD_OK : STATUS_RDY_BSY_TOUT;
+}
+
+/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the
+ * 64KB boundary. This sends the command with the correct address as indicated by the current address
+ * pointer variable set by the host when a SET ADDRESS command is issued.
+ */
+void ISPTarget_LoadExtendedAddress(void)
+{
+ ISPTarget_SendByte(LOAD_EXTENDED_ADDRESS_CMD);
+ ISPTarget_SendByte(0x00);
+ ISPTarget_SendByte(CurrentAddress >> 16);
+ ISPTarget_SendByte(0x00);
+}
+
+/** Waits until the last issued target memory programming command has completed, via the check mode given and using
+ * the given parameters.
+ *
+ * \param[in] ProgrammingMode Programming mode used and completion check to use, a mask of \c PROG_MODE_* constants
+ * \param[in] PollAddress Memory address to poll for completion if polling check mode used
+ * \param[in] PollValue Poll value to check against if polling check mode used
+ * \param[in] DelayMS Milliseconds to delay before returning if delay check mode used
+ * \param[in] ReadMemCommand Device low-level READ MEMORY command to send if value check mode used
+ *
+ * \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT or
+ * \ref STATUS_CMD_TOUT otherwise
+ */
+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 ProgrammingStatus = STATUS_CMD_OK;
+
+ /* Determine method of Programming Complete check */
+ switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK))
+ {
+ case PROG_MODE_WORD_TIMEDELAY_MASK:
+ case PROG_MODE_PAGED_TIMEDELAY_MASK:
+ ISPProtocol_DelayMS(DelayMS);
+ break;
+ case PROG_MODE_WORD_VALUE_MASK:
+ case PROG_MODE_PAGED_VALUE_MASK:
+ do
+ {
+ ISPTarget_SendByte(ReadMemCommand);
+ ISPTarget_SendByte(PollAddress >> 8);
+ ISPTarget_SendByte(PollAddress & 0xFF);
+ }
+ while ((ISPTarget_TransferByte(0x00) == PollValue) && TimeoutTicksRemaining);
+
+ if (!(TimeoutTicksRemaining))
+ ProgrammingStatus = STATUS_CMD_TOUT;
+
+ break;
+ case PROG_MODE_WORD_READYBUSY_MASK:
+ case PROG_MODE_PAGED_READYBUSY_MASK:
+ ProgrammingStatus = ISPTarget_WaitWhileTargetBusy();
+ break;
+ }
+
+ /* Program complete - reset timeout */
+ TimeoutTicksRemaining = COMMAND_TIMEOUT_TICKS;
+
+ return ProgrammingStatus;
+}
+
+#endif
+
diff --git a/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
new file mode 100644
index 0000000000..5f32f51940
--- /dev/null
+++ b/lib/lufa/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
@@ -0,0 +1,147 @@
+/*
+ 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
+