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Diffstat (limited to 'Bootloaders/DFU/BootloaderDFU.txt')
| -rw-r--r-- | Bootloaders/DFU/BootloaderDFU.txt | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Bootloaders/DFU/BootloaderDFU.txt b/Bootloaders/DFU/BootloaderDFU.txt index 858549f00..94657f355 100644 --- a/Bootloaders/DFU/BootloaderDFU.txt +++ b/Bootloaders/DFU/BootloaderDFU.txt @@ -89,6 +89,27 @@ * dfu-programmer at90usb1287 erase flash Mouse.hex * \endcode * + * \section Sec_API User Application API + * + * Several user application functions for FLASH and other special memory area manipulations are exposed by the bootloader, + * allowing the user application to call into the bootloader at runtime to read and write FLASH data. + * + * \note The APIs exposed by the DFU class bootloader are \b NOT compatible with the API exposed by the official Atmel DFU bootloader. + * + * By default, the bootloader API jump table is located 32 bytes from the end of the device's FLASH memory, and follows the + * following layout: + * + * \code + * #define BOOTLOADER_API_START(Index) (void*)(((FLASHEND - 32) + (2 * Index)) / 2) + * void (*BootloaderAPI_ErasePage)(uint32_t Address) = BOOTLOADER_API_START(0); + * void (*BootloaderAPI_WritePage)(uint32_t Address) = BOOTLOADER_API_START(1); + * void (*BootloaderAPI_FillWord)(uint32_t Address, uint16_t Word) = BOOTLOADER_API_START(2); + * uint8_t (*BootloaderAPI_ReadSignature)(uint16_t Address) = BOOTLOADER_API_START(3); + * uint8_t (*BootloaderAPI_ReadFuse)(uint16_t Address) = BOOTLOADER_API_START(4); + * uint8_t (*BootloaderAPI_ReadLock)(void) = BOOTLOADER_API_START(5); + * void (*BootloaderAPI_WriteLock)(uint8_t LockBits) = BOOTLOADER_API_START(6); + * \endcode + * * \section Sec_Options Project Options * * The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value. |