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Add Leonardo compatibility to most bootloaders, run user application if BOOTRST fuse is set and the last reset cause was not the /RESET pin.

Browse Source
pull/1469/head
Dean Camera 10 years ago
parent fef991e28b
commit 4c637c93ba
9 changed files with 149 additions and 55 deletions
Show Stats Download Patch File Download Diff File

33
Bootloaders/CDC/BootloaderCDC.c
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@ -72,7 +72,17 @@ void Application_Jump_Check(void)
{
bool JumpToApplication = false;
#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
#if (BOARD == BOARD_LEONARDO)
/* Enable pull-up on the IO13 pin so we can use it to select the mode */
PORTC |= (1 << 7);
Delay_MS(10);
/* If IO13 is not jumpered to ground, start the user application instead */
JumpToApplication = ((PINC & (1 << 7)) != 0);
/* Disable pull-up after the check has completed */
PORTC &= ~(1 << 7);
#elif ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
/* Disable JTAG debugging */
JTAG_DISABLE();
@ -81,22 +91,27 @@ void Application_Jump_Check(void)
Delay_MS(10);
/* If the TCK pin is not jumpered to ground, start the user application instead */
JumpToApplication |= ((PINF & (1 << 4)) != 0);
JumpToApplication = ((PINF & (1 << 4)) != 0);
/* Re-enable JTAG debugging */
JTAG_ENABLE();
#endif
#else
/* Check if the device's BOOTRST fuse is set */
if (boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS) & FUSE_BOOTRST)
{
/* If the reset source was not an external reset or the key is correct, clear it and jump to the application */
if (!(MCUSR & (1 << EXTRF)) || (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication = true;
/* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication |= true;
MCUSR &= ~(1 << EXTRF);
}
#endif
/* Don't run the user application if the reset vector is blank (no app loaded) */
if (pgm_read_word_near(0) == 0xFFFF)
JumpToApplication = false;
bool ApplicationValid = (pgm_read_word_near(0) != 0xFFFF);
/* If a request has been made to jump to the user application, honor it */
if (JumpToApplication)
if (JumpToApplication && ApplicationValid)
{
/* Turn off the watchdog */
MCUSR &= ~(1 << WDRF);

24
Bootloaders/CDC/BootloaderCDC.txt
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@ -59,9 +59,27 @@
*
* \section Sec_Running Running the Bootloader
*
* This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
* datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
* fuse is cleared.
* On the USB AVR8 devices, setting the \c HWBE device fuse will cause the bootloader to run if the \c HWB pin of
* the AVR is grounded when the device is reset.
*
* The are two behaviours of this bootloader, depending on the device's fuses:
*
* <b>If the device's BOOTRST fuse is set</b>, the bootloader will run any time the system is not reset from
* the external reset pin, unless no valid user application has been loaded. To initiate the bootloader, the
* device's external reset pin should be grounded.
*
* <b>If the device's BOOTRST fuse is not set</b>, the bootloader will run only if initiated via a software
* jump, or if the \c HWB pin was low during the last device reset (if the \c HWBE fuse is set).
*
* For board specific exceptions to the above, see below.
*
* \subsection SSec_XPLAIN Atmel Xplain Board
* Ground the USB AVR JTAG's \c TCK pin to ground when powering on the board to start the bootloader. This assumes the
* \c HWBE fuse is cleared and the \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
*
* \subsection SSec_Leonardo Arduino Leonardo Board
* Ground \c IO13 when powering the board to start the bootloader. This assumes the \c HWBE fuse is cleared and the
* \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
*
* For board specific exceptions to the above, see below.
*

33
Bootloaders/DFU/BootloaderDFU.c
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@ -108,7 +108,17 @@ void Application_Jump_Check(void)
{
bool JumpToApplication = false;
#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
#if (BOARD == BOARD_LEONARDO)
/* Enable pull-up on the IO13 pin so we can use it to select the mode */
PORTC |= (1 << 7);
Delay_MS(10);
/* If IO13 is not jumpered to ground, start the user application instead */
JumpToApplication = ((PINC & (1 << 7)) != 0);
/* Disable pull-up after the check has completed */
PORTC &= ~(1 << 7);
#elif ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
/* Disable JTAG debugging */
JTAG_DISABLE();
@ -117,22 +127,27 @@ void Application_Jump_Check(void)
Delay_MS(10);
/* If the TCK pin is not jumpered to ground, start the user application instead */
JumpToApplication |= ((PINF & (1 << 4)) != 0);
JumpToApplication = ((PINF & (1 << 4)) != 0);
/* Re-enable JTAG debugging */
JTAG_ENABLE();
#endif
#else
/* Check if the device's BOOTRST fuse is set */
if (boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS) & FUSE_BOOTRST)
{
/* If the reset source was not an external reset or the key is correct, clear it and jump to the application */
if (!(MCUSR & (1 << EXTRF)) || (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication = true;
/* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication |= true;
MCUSR &= ~(1 << EXTRF);
}
#endif
/* Don't run the user application if the reset vector is blank (no app loaded) */
JumpToApplication = false;
bool ApplicationValid = (pgm_read_word_near(0) != 0xFFFF);
/* If a request has been made to jump to the user application, honor it */
if (JumpToApplication)
if (JumpToApplication && ApplicationValid)
{
/* Turn off the watchdog */
MCUSR &= ~(1 << WDRF);

14
Bootloaders/DFU/BootloaderDFU.txt
Unescape View File

@ -57,9 +57,17 @@
*
* \section Sec_Running Running the Bootloader
*
* This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
* datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
* fuse is cleared.
* On the USB AVR8 devices, setting the \c HWBE device fuse will cause the bootloader to run if the \c HWB pin of
* the AVR is grounded when the device is reset.
*
* The are two behaviours of this bootloader, depending on the device's fuses:
*
* <b>If the device's BOOTRST fuse is set</b>, the bootloader will run any time the system is not reset from
* the external reset pin, unless no valid user application has been loaded. To initiate the bootloader, the
* device's external reset pin should be grounded.
*
* <b>If the device's BOOTRST fuse is not set</b>, the bootloader will run only if initiated via a software
* jump, or if the \c HWB pin was low during the last device reset (if the \c HWBE fuse is set).
*
* For board specific exceptions to the above, see below.
*

23
Bootloaders/MassStorage/BootloaderMassStorage.c
Unescape View File

@ -95,7 +95,7 @@ void Application_Jump_Check(void)
Delay_MS(10);
/* If IO13 is not jumpered to ground, start the user application instead */
JumpToApplication |= ((PINC & (1 << 7)) != 0);
JumpToApplication = ((PINC & (1 << 7)) != 0);
/* Disable pull-up after the check has completed */
PORTC &= ~(1 << 7);
@ -108,22 +108,27 @@ void Application_Jump_Check(void)
Delay_MS(10);
/* If the TCK pin is not jumpered to ground, start the user application instead */
JumpToApplication |= ((PINF & (1 << 4)) != 0);
JumpToApplication = ((PINF & (1 << 4)) != 0);
/* Re-enable JTAG debugging */
JTAG_ENABLE();
#endif
#else
/* Check if the device's BOOTRST fuse is set */
if (boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS) & FUSE_BOOTRST)
{
/* If the reset source was not an external reset or the key is correct, clear it and jump to the application */
if (!(MCUSR & (1 << EXTRF)) || (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication = true;
/* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication |= true;
MCUSR &= ~(1 << EXTRF);
}
#endif
/* Don't run the user application if the reset vector is blank (no app loaded) */
if (pgm_read_word_near(0) == 0xFFFF)
JumpToApplication = false;
bool ApplicationValid = (pgm_read_word_near(0) != 0xFFFF);
/* If a request has been made to jump to the user application, honor it */
if (JumpToApplication)
if (JumpToApplication && ApplicationValid)
{
/* Turn off the watchdog */
MCUSR &= ~(1 << WDRF);

14
Bootloaders/MassStorage/BootloaderMassStorage.txt
Unescape View File

@ -62,9 +62,17 @@
*
* \section Sec_Running Running the Bootloader
*
* This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
* datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
* fuse is cleared.
* On the USB AVR8 devices, setting the \c HWBE device fuse will cause the bootloader to run if the \c HWB pin of
* the AVR is grounded when the device is reset.
*
* The are two behaviours of this bootloader, depending on the device's fuses:
*
* <b>If the device's BOOTRST fuse is set</b>, the bootloader will run any time the system is not reset from
* the external reset pin, unless no valid user application has been loaded. To initiate the bootloader, the
* device's external reset pin should be grounded.
*
* <b>If the device's BOOTRST fuse is not set</b>, the bootloader will run only if initiated via a software
* jump, or if the \c HWB pin was low during the last device reset (if the \c HWBE fuse is set).
*
* For board specific exceptions to the above, see below.
*

23
Bootloaders/Printer/BootloaderPrinter.c
Unescape View File

@ -127,7 +127,7 @@ void Application_Jump_Check(void)
Delay_MS(10);
/* If IO13 is not jumpered to ground, start the user application instead */
JumpToApplication |= ((PINC & (1 << 7)) != 0);
JumpToApplication = ((PINC & (1 << 7)) != 0);
/* Disable pull-up after the check has completed */
PORTC &= ~(1 << 7);
@ -140,22 +140,27 @@ void Application_Jump_Check(void)
Delay_MS(10);
/* If the TCK pin is not jumpered to ground, start the user application instead */
JumpToApplication |= ((PINF & (1 << 4)) != 0);
JumpToApplication = ((PINF & (1 << 4)) != 0);
/* Re-enable JTAG debugging */
JTAG_ENABLE();
#endif
#else
/* Check if the device's BOOTRST fuse is set */
if (boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS) & FUSE_BOOTRST)
{
/* If the reset source was not an external reset or the key is correct, clear it and jump to the application */
if (!(MCUSR & (1 << EXTRF)) || (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication = true;
/* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
JumpToApplication |= true;
MCUSR &= ~(1 << EXTRF);
}
#endif
/* Don't run the user application if the reset vector is blank (no app loaded) */
if (pgm_read_word_near(0) == 0xFFFF)
JumpToApplication = false;
bool ApplicationValid = (pgm_read_word_near(0) != 0xFFFF);
/* If a request has been made to jump to the user application, honor it */
if (JumpToApplication)
if (JumpToApplication && ApplicationValid)
{
/* Turn off the watchdog */
MCUSR &= ~(1 << WDRF);

24
Bootloaders/Printer/BootloaderPrinter.txt
Unescape View File

@ -56,9 +56,27 @@
*
* \section Sec_Running Running the Bootloader
*
* This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
* datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
* fuse is cleared.
* On the USB AVR8 devices, setting the \c HWBE device fuse will cause the bootloader to run if the \c HWB pin of
* the AVR is grounded when the device is reset.
*
* The are two behaviours of this bootloader, depending on the device's fuses:
*
* <b>If the device's BOOTRST fuse is set</b>, the bootloader will run any time the system is not reset from
* the external reset pin, unless no valid user application has been loaded. To initiate the bootloader, the
* device's external reset pin should be grounded.
*
* <b>If the device's BOOTRST fuse is not set</b>, the bootloader will run only if initiated via a software
* jump, or if the \c HWB pin was low during the last device reset (if the \c HWBE fuse is set).
*
* For board specific exceptions to the above, see below.
*
* \subsection SSec_XPLAIN Atmel Xplain Board
* Ground the USB AVR JTAG's \c TCK pin to ground when powering on the board to start the bootloader. This assumes the
* \c HWBE fuse is cleared and the \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
*
* \subsection SSec_Leonardo Arduino Leonardo Board
* Ground \c IO13 when powering the board to start the bootloader. This assumes the \c HWBE fuse is cleared and the
* \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
*
* \section Sec_Installation Driver Installation
*

4
LUFA/DoxygenPages/ChangeLog.txt
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@ -14,7 +14,9 @@
* - Library Applications:
* - The CDC, DFU, Mass Storage and Printer class bootloaders will no longer run the user application if the application reset
* vector is blank (thanks to Alex Kazik)
* - The Printer class bootloader is now compatible with the original Atmel XPLAIN and Arduino Leonardo boards.
* - The CDC, DFU and Printer class bootloaders are now compatible with the original Atmel XPLAIN and Arduino Leonardo boards.
* - The CDC, DFU, Mass Storage and Printer class bootloaders are not compatible with devices with the BOOTRST fuse set and will
* exit automatically unless an external reset was the last reset cause (thanks to Alex Kazik)
*
* <b>Fixed:</b>
* - None.

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