Add branch for the conversion of demos to use standard C header files for configuration, rather than makefile defined macros.

This commit is contained in:
Dean Camera 2012-05-10 19:24:58 +00:00
parent e8570c4a37
commit 359fbfe14d
395 changed files with 9912 additions and 2756 deletions

View file

@ -92,6 +92,27 @@ static uint16_t StartAddr = 0x0000;
*/
static uint16_t EndAddr = 0x0000;
/** Magic lock for forced application start. If the HWBE fuse is programmed and BOOTRST is unprogrammed, the bootloader
* will start if the /HWB line of the AVR is held low and the system is reset. However, if the /HWB line is still held
* low when the application attempts to start via a watchdog reset, the bootloader will re-start. If set to the value
* \ref MAGIC_BOOT_KEY the special init function \ref Application_Jump_Check() will force the application to start.
*/
uint32_t MagicBootKey ATTR_NO_INIT;
/** Special startup routine to check if the bootloader was started via a watchdog reset, and if the magic application
* start key has been loaded into \ref MagicBootKey. If the bootloader started via the watchdog and the key is valid,
* this will force the user application to start via a software jump.
*/
void Application_Jump_Check(void)
{
// 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))
{
MagicBootKey = 0;
AppStartPtr();
}
}
/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously
* runs the bootloader processing routine until instructed to soft-exit, or hard-reset via the watchdog to start
@ -695,6 +716,9 @@ static void ProcessWriteCommand(void)
{
if (SentCommand.Data[1] == 0x00) // Start via watchdog
{
/* Unlock the forced application start mode of the bootloader if it is restarted */
MagicBootKey = MAGIC_BOOT_KEY;
/* Start the watchdog to reset the AVR once the communications are finalized */
wdt_enable(WDTO_250MS);
}

View file

@ -66,6 +66,9 @@
/** Minor bootloader version number. */
#define BOOTLOADER_VERSION_REV 0
/** Magic bootloader key to unlock forced application start mode. */
#define MAGIC_BOOT_KEY 0xDC42CACA
/** Complete bootloader version number expressed as a packed byte, constructed from the
* two individual bootloader version macros.
@ -206,6 +209,8 @@
static void ProcessWriteCommand(void);
static void ProcessReadCommand(void);
#endif
void Application_Jump_Check(void) ATTR_INIT_SECTION(3);
#endif

View file

@ -47,9 +47,9 @@
* This bootloader enumerates to the host as a DFU Class device, allowing for DFU-compatible programming
* software to load firmware onto the AVR.
*
* Out of the box this bootloader builds for the USB1287, and should fit into 4KB of bootloader space. If
* you wish to enlarge this space and/or change the AVR model, you will need to edit the BOOT_START and MCU
* values in the accompanying makefile.
* Out of the box this bootloader builds for the AT90USB1287 with an 8KB bootloader section size, and will fit
* into 4KB of bootloader space. If you wish to alter this size and/or change the AVR model, you will need to
* edit the MCU, FLASH_SIZE_KB and BOOT_SECTION_SIZE_KB values in the accompanying makefile.
*
* When the bootloader is running, the board's LED(s) will flash at regular intervals to distinguish the
* bootloader from the normal user application.

View file

@ -111,7 +111,7 @@ const USB_Descriptor_Configuration_t ConfigurationDescriptor =
.DetachTimeout = 0x0000,
.TransferSize = 0x0C00,
.DFUSpecification = VERSION_BCD(01.01)
.DFUSpecification = VERSION_BCD(01.10)
}
};

View file

@ -95,7 +95,7 @@ F_USB = $(F_CPU)
# Note that the bootloader size and start address given in AVRStudio is in words and not
# bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
FLASH_SIZE_KB = 128
BOOT_SECTION_SIZE_KB = 4
BOOT_SECTION_SIZE_KB = 8
# Formulas used to calculate the starting address of the Bootloader section, and the User Application