179 lines
4.5 KiB
C
179 lines
4.5 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
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* Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/f3/flash.h>
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/* This function is probably wrong, since deactivated. Please check and fix!
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static inline void flash_set_program_size(uint32_t psize)
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{
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FLASH_CR &= ~(((1 << 0) | (1 << 1)) << 8);
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FLASH_CR |= psize;
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}
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*/
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void flash_set_ws(uint32_t ws)
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{
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uint32_t reg32;
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reg32 = FLASH_ACR;
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reg32 &= ~((1 << 0) | (1 << 1) | (1 << 2));
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reg32 |= ws;
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FLASH_ACR = reg32;
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}
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void flash_unlock(void)
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{
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/* Authorize the FPEC access. */
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FLASH_KEYR = FLASH_KEY1;
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FLASH_KEYR = FLASH_KEY2;
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}
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void flash_lock(void)
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{
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FLASH_CR |= FLASH_LOCK;
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}
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void flash_clear_pgperr_flag(void)
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{
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FLASH_SR |= FLASH_PGPERR;
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}
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void flash_clear_eop_flag(void)
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{
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FLASH_SR |= FLASH_EOP;
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}
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void flash_clear_bsy_flag(void)
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{
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FLASH_SR &= ~FLASH_BSY;
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}
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void flash_clear_status_flags(void)
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{
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flash_clear_pgperr_flag();
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flash_clear_eop_flag();
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flash_clear_bsy_flag();
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}
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void flash_wait_for_last_operation(void)
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{
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while ((FLASH_SR & FLASH_BSY) == FLASH_BSY)
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;
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}
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/* Functions deactivated because flash_set_program_size function may not be */
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/* working well */
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/* void flash_program_double_word(uint32_t address, u64 data, uint32_t program_size) */
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/* { */
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/* /\* Ensure that all flash operations are complete. *\/ */
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/* flash_wait_for_last_operation(); */
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/* flash_set_program_size(program_size); */
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/* /\* Enable writes to flash. *\/ */
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/* FLASH_CR |= FLASH_PG; */
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/* /\* Program the first half of the word. *\/ */
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/* MMIO64(address) = data; */
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/* /\* Wait for the write to complete. *\/ */
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/* flash_wait_for_last_operation(); */
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/* /\* Disable writes to flash. *\/ */
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/* FLASH_CR &= ~FLASH_PG; */
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/* } */
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/* void flash_program_word(uint32_t address, uint32_t data, uint32_t program_size) */
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/* { */
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/* /\* Ensure that all flash operations are complete. *\/ */
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/* flash_wait_for_last_operation(); */
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/* flash_set_program_size(program_size); */
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/* /\* Enable writes to flash. *\/ */
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/* FLASH_CR |= FLASH_PG; */
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/* /\* Program the first half of the word. *\/ */
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/* MMIO32(address) = data; */
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/* /\* Wait for the write to complete. *\/ */
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/* flash_wait_for_last_operation(); */
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/* /\* Disable writes to flash. *\/ */
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/* FLASH_CR &= ~FLASH_PG; */
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/* } */
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/* void flash_program_half_word(uint32_t address, u16 data, uint32_t program_size) */
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/* { */
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/* flash_wait_for_last_operation(); */
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/* flash_set_program_size(program_size); */
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/* FLASH_CR |= FLASH_PG; */
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/* MMIO16(address) = data; */
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/* flash_wait_for_last_operation(); */
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/* FLASH_CR &= ~FLASH_PG; /\* Disable the PG bit. *\/ */
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/* } */
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/* void flash_program_byte(uint32_t address, u8 data, uint32_t program_size) */
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/* { */
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/* flash_wait_for_last_operation(); */
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/* flash_set_program_size(program_size); */
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/* FLASH_CR |= FLASH_PG; */
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/* MMIO8(address) = data; */
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/* flash_wait_for_last_operation(); */
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/* FLASH_CR &= ~FLASH_PG; /\* Disable the PG bit. *\/ */
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/* } */
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/* void flash_erase_page(uint32_t page, uint32_t program_size) */
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/* { */
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/* flash_wait_for_last_operation(); */
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/* flash_set_program_size(program_size); */
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/* FLASH_CR &= ~(((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3)) << 3); */
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/* FLASH_CR |= page; */
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/* FLASH_CR |= FLASH_PER; */
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/* FLASH_CR |= FLASH_STRT; */
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/* flash_wait_for_last_operation(); */
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/* FLASH_CR &= ~FLASH_PER; */
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/* FLASH_CR &= ~(((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3)) << 3); */
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/* } */
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/* void flash_erase_all_pages(uint32_t program_size) */
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/* { */
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/* flash_wait_for_last_operation(); */
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/* flash_set_program_size(program_size); */
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/* FLASH_CR |= FLASH_MER; /\* Enable mass erase. *\/ */
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/* FLASH_CR |= FLASH_STRT; /\* Trigger the erase. *\/ */
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/* flash_wait_for_last_operation(); */
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/* FLASH_CR &= ~FLASH_MER; /\* Disable mass erase. *\/ */
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/* } */
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