Add branch for the conversion of demos to use standard C header files for configuration, rather than makefile defined macros.
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395 changed files with 9912 additions and 2756 deletions
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@ -92,6 +92,27 @@ static uint16_t StartAddr = 0x0000;
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*/
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static uint16_t EndAddr = 0x0000;
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/** Magic lock for forced application start. If the HWBE fuse is programmed and BOOTRST is unprogrammed, the bootloader
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* 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
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* low when the application attempts to start via a watchdog reset, the bootloader will re-start. If set to the value
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* \ref MAGIC_BOOT_KEY the special init function \ref Application_Jump_Check() will force the application to start.
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*/
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uint32_t MagicBootKey ATTR_NO_INIT;
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/** Special startup routine to check if the bootloader was started via a watchdog reset, and if the magic application
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* start key has been loaded into \ref MagicBootKey. If the bootloader started via the watchdog and the key is valid,
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* this will force the user application to start via a software jump.
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*/
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void Application_Jump_Check(void)
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{
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// If the reset source was the bootloader and the key is correct, clear it and jump to the application
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if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
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{
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MagicBootKey = 0;
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AppStartPtr();
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}
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}
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/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously
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* runs the bootloader processing routine until instructed to soft-exit, or hard-reset via the watchdog to start
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@ -695,6 +716,9 @@ static void ProcessWriteCommand(void)
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{
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if (SentCommand.Data[1] == 0x00) // Start via watchdog
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{
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/* Unlock the forced application start mode of the bootloader if it is restarted */
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MagicBootKey = MAGIC_BOOT_KEY;
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/* Start the watchdog to reset the AVR once the communications are finalized */
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wdt_enable(WDTO_250MS);
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}
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@ -66,6 +66,9 @@
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/** Minor bootloader version number. */
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#define BOOTLOADER_VERSION_REV 0
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/** Magic bootloader key to unlock forced application start mode. */
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#define MAGIC_BOOT_KEY 0xDC42CACA
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/** Complete bootloader version number expressed as a packed byte, constructed from the
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* two individual bootloader version macros.
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@ -206,6 +209,8 @@
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static void ProcessWriteCommand(void);
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static void ProcessReadCommand(void);
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#endif
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void Application_Jump_Check(void) ATTR_INIT_SECTION(3);
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#endif
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@ -47,9 +47,9 @@
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* This bootloader enumerates to the host as a DFU Class device, allowing for DFU-compatible programming
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* software to load firmware onto the AVR.
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*
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* Out of the box this bootloader builds for the USB1287, and should fit into 4KB of bootloader space. If
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* you wish to enlarge this space and/or change the AVR model, you will need to edit the BOOT_START and MCU
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* values in the accompanying makefile.
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* Out of the box this bootloader builds for the AT90USB1287 with an 8KB bootloader section size, and will fit
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* into 4KB of bootloader space. If you wish to alter this size and/or change the AVR model, you will need to
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* edit the MCU, FLASH_SIZE_KB and BOOT_SECTION_SIZE_KB values in the accompanying makefile.
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*
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* When the bootloader is running, the board's LED(s) will flash at regular intervals to distinguish the
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* bootloader from the normal user application.
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@ -111,7 +111,7 @@ const USB_Descriptor_Configuration_t ConfigurationDescriptor =
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.DetachTimeout = 0x0000,
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.TransferSize = 0x0C00,
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.DFUSpecification = VERSION_BCD(01.01)
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.DFUSpecification = VERSION_BCD(01.10)
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}
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};
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@ -95,7 +95,7 @@ F_USB = $(F_CPU)
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# Note that the bootloader size and start address given in AVRStudio is in words and not
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# bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
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FLASH_SIZE_KB = 128
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BOOT_SECTION_SIZE_KB = 4
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BOOT_SECTION_SIZE_KB = 8
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# Formulas used to calculate the starting address of the Bootloader section, and the User Application
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