105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2019.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2019 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Bootloader user application API functions.
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*/
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#include "BootloaderAPI.h"
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bool IsPageAddressValid(const uint32_t Address)
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{
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/* Determine if the given page address is correctly aligned to the
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start of a flash page.
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Note that this is not static, as we need to force it into the
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AUX_BOOT_SECTION on small flash devices to save space.
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*/
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bool PageAddressIsAligned = !(Address & (SPM_PAGESIZE - 1));
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return (Address < BOOT_START_ADDR) && PageAddressIsAligned;
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}
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void BootloaderAPI_ErasePage(const uint32_t Address)
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{
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if (! IsPageAddressValid(Address))
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return;
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ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
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{
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boot_page_erase_safe(Address);
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boot_spm_busy_wait();
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boot_rww_enable();
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}
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}
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void BootloaderAPI_WritePage(const uint32_t Address)
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{
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if (! IsPageAddressValid(Address))
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return;
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ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
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{
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boot_page_write_safe(Address);
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boot_spm_busy_wait();
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boot_rww_enable();
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}
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}
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void BootloaderAPI_FillWord(const uint32_t Address, const uint16_t Word)
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{
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boot_page_fill_safe(Address, Word);
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}
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uint8_t BootloaderAPI_ReadSignature(const uint16_t Address)
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{
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return boot_signature_byte_get(Address);
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}
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uint8_t BootloaderAPI_ReadFuse(const uint16_t Address)
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{
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return boot_lock_fuse_bits_get(Address);
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}
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uint8_t BootloaderAPI_ReadLock(void)
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{
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return boot_lock_fuse_bits_get(GET_LOCK_BITS);
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}
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void BootloaderAPI_WriteLock(const uint8_t LockBits)
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{
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ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
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{
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boot_lock_bits_set_safe(LockBits);
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}
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}
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