/*
LUFA Library
- Copyright (C) Dean Camera, 2014.
+ Copyright (C) Dean Camera, 2018.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2014 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2018 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
{
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();
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();
+ #else
+ /* Check if the device's BOOTRST fuse is set */
+ if (!(BootloaderAPI_ReadFuse(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;
+
+ /* Clear reset source */
+ MCUSR &= ~(1 << EXTRF);
+ }
+ else
+ {
+ /* If the reset source was the bootloader and the key is correct, clear it and jump to the application;
+ * this can happen in the HWBE fuse is set, and the HBE pin is low during the watchdog reset */
+ if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
+ JumpToApplication = true;
+
+ /* Clear reset source */
+ MCUSR &= ~(1 << WDRF);
+ }
#endif
- /* 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;
+ /* Don't run the user application if the reset vector is blank (no app loaded) */
+ 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);
+ MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Clear the boot key and jump to the user application */
USB_USBTask();
}
+ /* Wait a short time to end all USB transactions and then disconnect */
+ _delay_us(1000);
+
/* Disconnect from the host - USB interface will be reset later along with the AVR */
USB_Detach();
/* Check if command is to read a memory block */
if (Command == AVR109_COMMAND_BlockRead)
{
- /* Re-enable RWW section */
- boot_rww_enable();
-
while (BlockSize--)
{
if (MemoryType == MEMORY_TYPE_FLASH)
uint32_t PageStartAddress = CurrAddress;
if (MemoryType == MEMORY_TYPE_FLASH)
- {
- boot_page_erase(PageStartAddress);
- boot_spm_busy_wait();
- }
+ BootloaderAPI_ErasePage(PageStartAddress);
while (BlockSize--)
{
if (HighByte)
{
/* Write the next FLASH word to the current FLASH page */
- boot_page_fill(CurrAddress, ((FetchNextCommandByte() << 8) | LowByte));
+ BootloaderAPI_FillWord(CurrAddress, ((FetchNextCommandByte() << 8) | LowByte));
/* Increment the address counter after use */
CurrAddress += 2;
else
{
/* Write the next EEPROM byte from the endpoint */
- eeprom_write_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
+ eeprom_update_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
/* Increment the address counter after use */
CurrAddress += 2;
if (MemoryType == MEMORY_TYPE_FLASH)
{
/* Commit the flash page to memory */
- boot_page_write(PageStartAddress);
-
- /* Wait until write operation has completed */
- boot_spm_busy_wait();
+ BootloaderAPI_WritePage(PageStartAddress);
}
/* Send response byte back to the host */
{
/* Clear the application section of flash */
for (uint32_t CurrFlashAddress = 0; CurrFlashAddress < (uint32_t)BOOT_START_ADDR; CurrFlashAddress += SPM_PAGESIZE)
- {
- boot_page_erase(CurrFlashAddress);
- boot_spm_busy_wait();
- boot_page_write(CurrFlashAddress);
- boot_spm_busy_wait();
- }
+ BootloaderAPI_ErasePage(CurrFlashAddress);
/* Send confirmation byte back to the host */
WriteNextResponseByte('\r');
else if (Command == AVR109_COMMAND_WriteLockbits)
{
/* Set the lock bits to those given by the host */
- boot_lock_bits_set(FetchNextCommandByte());
+ BootloaderAPI_WriteLock(FetchNextCommandByte());
/* Send confirmation byte back to the host */
WriteNextResponseByte('\r');
#endif
else if (Command == AVR109_COMMAND_ReadLockbits)
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_LOCK_BITS));
+ WriteNextResponseByte(BootloaderAPI_ReadLock());
}
else if (Command == AVR109_COMMAND_ReadLowFuses)
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_LOW_FUSE_BITS));
+ WriteNextResponseByte(BootloaderAPI_ReadFuse(GET_LOW_FUSE_BITS));
}
else if (Command == AVR109_COMMAND_ReadHighFuses)
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS));
+ WriteNextResponseByte(BootloaderAPI_ReadFuse(GET_HIGH_FUSE_BITS));
}
else if (Command == AVR109_COMMAND_ReadExtendedFuses)
{
- WriteNextResponseByte(boot_lock_fuse_bits_get(GET_EXTENDED_FUSE_BITS));
+ WriteNextResponseByte(BootloaderAPI_ReadFuse(GET_EXTENDED_FUSE_BITS));
}
#if !defined(NO_BLOCK_SUPPORT)
else if (Command == AVR109_COMMAND_GetBlockWriteSupport)
else if (Command == AVR109_COMMAND_FillFlashPageWordHigh)
{
/* Write the high byte to the current flash page */
- boot_page_fill(CurrAddress, FetchNextCommandByte());
+ BootloaderAPI_FillWord(CurrAddress, FetchNextCommandByte());
/* Send confirmation byte back to the host */
WriteNextResponseByte('\r');
else if (Command == AVR109_COMMAND_FillFlashPageWordLow)
{
/* Write the low byte to the current flash page */
- boot_page_fill(CurrAddress | 0x01, FetchNextCommandByte());
+ BootloaderAPI_FillWord(CurrAddress | 0x01, FetchNextCommandByte());
/* Increment the address */
CurrAddress += 2;
else if (Command == AVR109_COMMAND_WriteFlashPage)
{
/* Commit the flash page to memory */
- boot_page_write(CurrAddress);
-
- /* Wait until write operation has completed */
- boot_spm_busy_wait();
+ BootloaderAPI_WritePage(CurrAddress);
/* Send confirmation byte back to the host */
WriteNextResponseByte('\r');
else if (Command == AVR109_COMMAND_WriteEEPROM)
{
/* Read the byte from the endpoint and write it to the EEPROM */
- eeprom_write_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
+ eeprom_update_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte());
/* Increment the address after use */
CurrAddress += 2;
/* Acknowledge the command from the host */
Endpoint_ClearOUT();
}
-
projects / pub / USBasp.git / blobdiff