Added User Application APIs to the CDC and DFU class bootloaders.

[pub/lufa.git] / Bootloaders / CDC / BootloaderCDC.txt

diff --git a/Bootloaders/CDC/BootloaderCDC.txt b/Bootloaders/CDC/BootloaderCDC.txt
index 4e5b3c5..ab45ad1 100644 (file)
--- a/Bootloaders/CDC/BootloaderCDC.txt
+++ b/Bootloaders/CDC/BootloaderCDC.txt
@@ -86,6 +86,25 @@
  *
  *  Refer to the AVRDude project documentation for additional usage instructions.
  *
+ *  \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.
+ *
+ *  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.