142ecdaf
 rguillom
first commit
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/*
LUFA Library
Copyright (C) Dean Camera, 2019.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2019 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
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaims all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Bootloader user application API functions.
*/
#include "BootloaderAPI.h"
bool IsPageAddressValid(const uint32_t Address)
{
/* Determine if the given page address is correctly aligned to the
start of a flash page.
Note that this is not static, as we need to force it into the
AUX_BOOT_SECTION on small flash devices to save space.
*/
bool PageAddressIsAligned = !(Address & (SPM_PAGESIZE - 1));
return (Address < BOOT_START_ADDR) && PageAddressIsAligned;
}
void BootloaderAPI_ErasePage(const uint32_t Address)
{
if (! IsPageAddressValid(Address))
return;
ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
boot_page_erase_safe(Address);
boot_spm_busy_wait();
boot_rww_enable();
}
}
void BootloaderAPI_WritePage(const uint32_t Address)
{
if (! IsPageAddressValid(Address))
return;
ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
boot_page_write_safe(Address);
boot_spm_busy_wait();
boot_rww_enable();
}
}
void BootloaderAPI_FillWord(const uint32_t Address, const uint16_t Word)
{
boot_page_fill_safe(Address, Word);
}
uint8_t BootloaderAPI_ReadSignature(const uint16_t Address)
{
return boot_signature_byte_get(Address);
}
uint8_t BootloaderAPI_ReadFuse(const uint16_t Address)
{
return boot_lock_fuse_bits_get(Address);
}
uint8_t BootloaderAPI_ReadLock(void)
{
return boot_lock_fuse_bits_get(GET_LOCK_BITS);
}
void BootloaderAPI_WriteLock(const uint8_t LockBits)
{
ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
boot_lock_bits_set_safe(LockBits);
}
}
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