X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/75419b4d97be051f0a1401e94f41121d24dbda44..f2740a66bafa876dfcf2cdfa4c6f3e17395e8bf8:/Bootloaders/CDC/BootloaderCDC.c diff --git a/Bootloaders/CDC/BootloaderCDC.c b/Bootloaders/CDC/BootloaderCDC.c index 5f1047eee..00755a54c 100644 --- a/Bootloaders/CDC/BootloaderCDC.c +++ b/Bootloaders/CDC/BootloaderCDC.c @@ -1,13 +1,13 @@ /* LUFA Library - Copyright (C) Dean Camera, 2013. + Copyright (C) Dean Camera, 2018. dean [at] fourwalledcubicle [dot] com www.lufa-lib.org */ /* - Copyright 2013 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 @@ -72,7 +72,17 @@ void Application_Jump_Check(void) { 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(); @@ -81,21 +91,41 @@ void Application_Jump_Check(void) 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<> 1)), FetchNextCommandByte()); + eeprom_update_byte((uint8_t*)((intptr_t)(CurrAddress >> 1)), FetchNextCommandByte()); /* Increment the address counter after use */ CurrAddress += 2; @@ -338,10 +365,7 @@ static void ReadWriteMemoryBlock(const uint8_t Command) 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 */ @@ -483,12 +507,7 @@ static void CDC_Task(void) { /* 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'); @@ -497,7 +516,7 @@ static void CDC_Task(void) 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'); @@ -505,19 +524,19 @@ static void CDC_Task(void) #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) @@ -538,7 +557,7 @@ static void CDC_Task(void) 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'); @@ -546,7 +565,7 @@ static void CDC_Task(void) 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; @@ -557,10 +576,7 @@ static void CDC_Task(void) 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'); @@ -581,7 +597,7 @@ static void CDC_Task(void) 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; @@ -638,4 +654,3 @@ static void CDC_Task(void) /* Acknowledge the command from the host */ Endpoint_ClearOUT(); } -