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- /** @defgroup flash_file FLASH peripheral API
- *
- * @ingroup peripheral_apis
- */
-
- /*
- * This file is part of the libopencm3 project.
- *
- * Copyright (C) 2017 Matthew Lai @m@matthewlai.ca>
- * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
- * Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
- *
- * This library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
- /**@{*/
-
- #include <libopencm3/stm32/flash.h>
-
- /*---------------------------------------------------------------------------*/
- /** @brief Issue Pipeline Stall
-
- Issue a pipeline stall to make sure all write operations completed.
-
- RM0385: After performing a data write operation and before polling the BSY bit
- to be cleared, the software can issue a DSB instruction to guarantee the
- completion of a previous data write operation.
-
- */
-
- static inline void flash_pipeline_stall(void)
- {
- __asm__ volatile("dsb":::"memory");
- }
-
- /*---------------------------------------------------------------------------*/
- /** @brief Wait until Last Operation has Ended
-
- This loops indefinitely until an operation (write or erase) has completed by
- testing the busy flag.
- */
- void flash_wait_for_last_operation(void)
- {
- flash_pipeline_stall();
- while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
- }
-
- /*---------------------------------------------------------------------------*/
- /** @brief Clear the Erase Sequence Error Flag
-
- This flag is set when an erase operation is performed with control register has
- not been correctly set.
- */
- void flash_clear_erserr_flag(void)
- {
- FLASH_SR |= FLASH_SR_ERSERR;
- }
-
- /*---------------------------------------------------------------------------*/
- /** @brief Clear All Status Flags
-
- Program error, end of operation, write protect error.
- */
-
- void flash_clear_status_flags(void)
- {
- flash_clear_erserr_flag();
- flash_clear_pgaerr_flag();
- flash_clear_wrperr_flag();
- flash_clear_pgperr_flag();
- flash_clear_eop_flag();
- }
-
- /*---------------------------------------------------------------------------*/
- /** @brief Enable the ART Cache
-
- */
-
- void flash_art_enable(void)
- {
- FLASH_ACR |= FLASH_ACR_ARTEN;
- }
-
- /*---------------------------------------------------------------------------*/
- /** @brief Reset the ART Cache
-
- The ART cache must be disabled for this to have effect.
- */
-
- void flash_art_reset(void)
- {
- FLASH_ACR |= FLASH_ACR_ARTRST;
- }
-
- /**@}*/
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