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Diffstat (limited to 'Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c')
| -rw-r--r-- | Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c deleted file mode 100644 index 197b62275d..0000000000 --- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c +++ /dev/null @@ -1,370 +0,0 @@ -/* - 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 - |