Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Header file for ISPTarget.c.
  34  */
  35
  36 #ifndef _ISP_TARGET_
  37 #define _ISP_TARGET_
  38
  39         /* Includes: */
  40                 #include <avr/io.h>
  41                 #include <avr/pgmspace.h>
  42                 #include <util/delay.h>
  43
  44                 #include <LUFA/Drivers/USB/USB.h>
  45                 #include <LUFA/Drivers/Peripheral/SPI.h>
  46
  47                 #include "../V2ProtocolParams.h"
  48
  49         /* Preprocessor Checks: */
  50                 #if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
  51                         #undef ENABLE_ISP_PROTOCOL
  52
  53                         #if !defined(ENABLE_XPROG_PROTOCOL)
  54                                 #define ENABLE_XPROG_PROTOCOL
  55                         #endif
  56                 #endif
  57
  58         /* Macros: */
  59                 /** Low level device command to issue an extended FLASH address, for devices with over 128KB of FLASH. */
  60                 #define LOAD_EXTENDED_ADDRESS_CMD     0x4D
  61
  62                 /** Macro to convert an ISP frequency to a number of timer clock cycles for the software SPI driver. */
  63                 #define TIMER_COMP(freq)              (((F_CPU / 8) / 2 / freq) - 1)
  64
  65                 /** ISP rescue clock speed in Hz, for clocking targets with incorrectly set fuses. */
  66                 #define ISP_RESCUE_CLOCK_SPEED        4000000
  67
  68         /* External Variables: */
  69                 extern bool HardwareSPIMode;
  70
  71         /* Function Prototypes: */
  72                 void    ISPTarget_EnableTargetISP(void);
  73                 void    ISPTarget_DisableTargetISP(void);
  74                 void    ISPTarget_ConfigureRescueClock(void);
  75                 void    ISPTarget_ConfigureSoftwareSPI(const uint8_t SCKDuration);
  76                 uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte);
  77                 void    ISPTarget_ChangeTargetResetLine(const bool ResetTarget);
  78                 uint8_t ISPTarget_WaitWhileTargetBusy(void);
  79                 void    ISPTarget_LoadExtendedAddress(void);
  80                 uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode,
  81                                                       const uint16_t PollAddress,
  82                                                       const uint8_t PollValue,
  83                                                       const uint8_t DelayMS,
  84                                                       const uint8_t ReadMemCommand);
  85
  86         /* Inline Functions: */
  87                 /** Sends a byte of ISP data to the attached target, using the appropriate SPI hardware or
  88                  *  software routines depending on the selected ISP speed.
  89                  *
  90                  *  \param[in] Byte  Byte of data to send to the attached target
  91                  */
  92                 static inline void ISPTarget_SendByte(const uint8_t Byte)
  93                 {
  94                         if (HardwareSPIMode)
  95                           SPI_SendByte(Byte);
  96                         else
  97                           ISPTarget_TransferSoftSPIByte(Byte);
  98                 }
  99
 100                 /** Receives a byte of ISP data from the attached target, using the appropriate
 101                  *  SPI hardware or software routines depending on the selected ISP speed.
 102                  *
 103                  *  \return Received byte of data from the attached target
 104                  */
 105                 static inline uint8_t ISPTarget_ReceiveByte(void)
 106                 {
 107                         #if !defined(INVERTED_ISP_MISO)
 108                         if (HardwareSPIMode)
 109                           return SPI_ReceiveByte();
 110                         else
 111                           return ISPTarget_TransferSoftSPIByte(0x00);
 112                         #else
 113                         if (HardwareSPIMode)
 114                           return ~SPI_ReceiveByte();
 115                         else
 116                           return ~ISPTarget_TransferSoftSPIByte(0x00);
 117                         #endif
 118                 }
 119
 120                 /** Sends and receives a byte of ISP data to and from the attached target, using the
 121                  *  appropriate SPI hardware or software routines depending on the selected ISP speed.
 122                  *
 123                  *  \param[in] Byte  Byte of data to send to the attached target
 124                  *
 125                  *  \return Received byte of data from the attached target
 126                  */
 127                 static inline uint8_t ISPTarget_TransferByte(const uint8_t Byte)
 128                 {
 129                         #if !defined(INVERTED_ISP_MISO)
 130                         if (HardwareSPIMode)
 131                           return SPI_TransferByte(Byte);
 132                         else
 133                           return ISPTarget_TransferSoftSPIByte(Byte);
 134                         #else
 135                         if (HardwareSPIMode)
 136                           return ~SPI_TransferByte(Byte);
 137                         else
 138                           return ~ISPTarget_TransferSoftSPIByte(Byte);
 139                         #endif
 140                 }
 141
 142 #endif
 143