Documentation added to flash modules for all STM32 families.
This commit is contained in:
Ken Sarkies
Frantisek Burian
parent
e4f4845e0c
commit
a54a12e1c9
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@ -1,3 +1,11 @@
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/** @addtogroup flash_defines
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*
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* @author @htmlonly © @endhtmlonly 2010
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* Thomas Otto <tommi@viadmin.org>
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* @author @htmlonly © @endhtmlonly 2010
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* Mark Butler <mbutler@physics.otago.ac.nz>
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*
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -30,6 +38,7 @@
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/** @endcond */
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#ifndef LIBOPENCM3_FLASH_COMMON_F234_H
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#define LIBOPENCM3_FLASH_COMMON_F234_H
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/**@{*/
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#include <libopencm3/cm3/common.h>
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@ -75,6 +84,7 @@ void flash_clear_status_flags(void);
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void flash_wait_for_last_operation(void);
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END_DECLS
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/**@}*/
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#endif
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/** @cond */
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@ -1,3 +1,11 @@
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/** @addtogroup flash_defines
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*
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* @author @htmlonly © @endhtmlonly 2010
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* Thomas Otto <tommi@viadmin.org>
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* @author @htmlonly © @endhtmlonly 2010
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* Mark Butler <mbutler@physics.otago.ac.nz>
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*
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -30,6 +38,7 @@
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/** @endcond */
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#ifndef LIBOPENCM3_FLASH_COMMON_F24_H
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#define LIBOPENCM3_FLASH_COMMON_F24_H
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/**@{*/
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#include <libopencm3/cm3/common.h>
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#include <libopencm3/stm32/common/flash_common_f234.h>
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@ -128,6 +137,7 @@ void flash_program(uint32_t address, uint8_t *data, uint32_t len);
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void flash_program_option_bytes(uint32_t data);
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END_DECLS
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/**@}*/
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#endif
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/** @cond */
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@ -6,7 +6,10 @@
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*
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* @version 1.0.0
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*
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* @date 11 July 2013
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* @author @htmlonly © @endhtmlonly 2013
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* Frantisek Burian <BuFran@seznam.cz>
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*
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* @date 14 January 2014
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*
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* LGPL License Terms @ref lgpl_license
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*/
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@ -31,6 +34,7 @@
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#ifndef LIBOPENCM3_FLASH_H
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#define LIBOPENCM3_FLASH_H
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/**@{*/
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/cm3/common.h>
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@ -137,5 +141,6 @@ void flash_erase_page(uint32_t page_address);
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void flash_erase_all_pages(void);
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END_DECLS
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/**@}*/
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#endif
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@ -1,3 +1,16 @@
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/** @defgroup flash_defines FLASH Defines
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*
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* @ingroup STM32F1xx_defines
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*
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* @brief Defined Constants and Types for the STM32F1xx FLASH Memory
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*
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* @version 1.0.0
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*
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* @date 14 January 2014
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -28,6 +41,8 @@
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#ifndef LIBOPENCM3_FLASH_H
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#define LIBOPENCM3_FLASH_H
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/**@{*/
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/cm3/common.h>
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@ -76,14 +91,14 @@
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/* FLASH_OBR[25:18]: Data1 */
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/* FLASH_OBR[17:10]: Data0 */
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#define FLASH_OBR_NRST_STDBY (1 << 4)
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#define FLASH_OBR_NRST_STOP (1 << 3)
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#define FLASH_OBR_WDG_SW (1 << 2)
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#define FLASH_OBR_NRST_STOP (1 << 3)
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#define FLASH_OBR_WDG_SW (1 << 2)
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#define FLASH_OBR_RDPRT (1 << 1)
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#define FLASH_OBR_OPTERR (1 << 0)
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#define FLASH_OBR_OPTERR (1 << 0)
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/* --- FLASH Keys -----------------------------------------------------------*/
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#define FLASH_RDP_KEY ((uint16_t)0x00a5)
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#define FLASH_RDP_KEY ((uint16_t)0x00a5)
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#define FLASH_KEYR_KEY1 ((uint32_t)0x45670123)
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#define FLASH_KEYR_KEY2 ((uint32_t)0xcdef89ab)
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@ -115,4 +130,6 @@ void flash_program_option_bytes(uint32_t address, uint16_t data);
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END_DECLS
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/**@}*/
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#endif
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@ -1,3 +1,16 @@
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/** @defgroup flash_defines FLASH Defines
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*
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* @ingroup STM32F2xx_defines
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*
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* @brief Defined Constants and Types for the STM32F2xx FLASH Memory
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*
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* @version 1.0.0
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*
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* @date 14 January 2014
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -30,6 +30,7 @@
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#ifndef LIBOPENCM3_FLASH_H
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#define LIBOPENCM3_FLASH_H
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/**@{*/
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/stm32/common/flash_common_f234.h>
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@ -67,6 +68,7 @@
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#define FLASH_CR_MER (1 << 2)
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#define FLASH_CR_PER (1 << 1)
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#define FLASH_CR_PG (1 << 0)
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/**@}*/
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#endif
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/** @defgroup flash_defines FLASH Defines
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*
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* @ingroup STM32F4xx_defines
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*
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* @brief Defined Constants and Types for the STM32F4xx FLASH Memory
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*
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* @version 1.0.0
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*
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* @date 14 January 2014
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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/** @defgroup flash_defines FLASH Defines
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*
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* @ingroup STM32L1xx_defines
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*
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* @brief Defined Constants and Types for the STM32L1xx FLASH Memory
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*
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* @version 1.0.0
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*
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* @author @htmlonly © @endhtmlonly 2012
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* Karl Palsson <karlp@tweak.net.au>
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*
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* @date 14 January 2014
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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#ifndef LIBOPENCM3_FLASH_H
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#define LIBOPENCM3_FLASH_H
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/**@{*/
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/cm3/common.h>
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@ -122,5 +139,6 @@ void flash_prefetch_disable(void);
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void flash_set_ws(uint32_t ws);
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END_DECLS
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/**@}*/
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#endif
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/** @addtogroup flash_file
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*
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -18,8 +22,21 @@
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**@{*/
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#include <libopencm3/stm32/flash.h>
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/*---------------------------------------------------------------------------*/
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/** @brief Set the Number of Wait States
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Used to match the system clock to the FLASH memory access time. See the
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programming manual for more information on clock speed ranges. The latency must
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be changed to the appropriate value <b>before</b> any increase in clock
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speed, or <b>after</b> any decrease in clock speed.
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@param[in] uint32_t ws: values 0-7 only.
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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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@ -30,6 +47,13 @@ void flash_set_ws(uint32_t ws)
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FLASH_ACR = reg32;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Unlock the Flash Program and Erase Controller
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This enables write access to the Flash memory. It is locked by default on
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reset.
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*/
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void flash_unlock(void)
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{
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/* Clear the unlock sequence state. */
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@ -40,28 +64,58 @@ void flash_unlock(void)
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FLASH_KEYR = FLASH_KEYR_KEY2;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Lock the Flash Program and Erase Controller
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Used to prevent spurious writes to FLASH.
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*/
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void flash_lock(void)
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{
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FLASH_CR |= FLASH_CR_LOCK;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear the Programming Error Status Flag
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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_SR_PGPERR;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear the End of Operation Status Flag
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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_SR_EOP;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear the Busy Status Flag
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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_SR_BSY;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Wait until Last Operation has Ended
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This loops indefinitely until an operation (write or erase) has completed by
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testing the busy 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_SR_BSY) == FLASH_SR_BSY);
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}
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/**@}*/
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/** @addtogroup flash_file
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*
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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@ -18,69 +22,154 @@
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**@{*/
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#include <libopencm3/stm32/flash.h>
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/*---------------------------------------------------------------------------*/
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/** @brief Set the Program Parallelism Size
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Set the programming word width. Note carefully the power supply voltage
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restrictions under which the different word sizes may be used. See the
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programming manual for more information.
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@param psize: 0 (8-bit), 1 (16-bit), 2 (32-bit), 3 (64-bit)
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*/
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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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/** @brief Enable the Data Cache
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*/
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void flash_dcache_enable(void)
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{
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FLASH_ACR |= FLASH_ACR_DCE;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Disable the Data Cache
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*/
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void flash_dcache_disable(void)
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{
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FLASH_ACR &= ~FLASH_ACR_DCE;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Enable the Instruction Cache
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*/
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void flash_icache_enable(void)
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{
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FLASH_ACR |= FLASH_ACR_ICE;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Disable the Instruction Cache
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*/
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void flash_icache_disable(void)
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{
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FLASH_ACR &= ~FLASH_ACR_ICE;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Enable the FLASH Prefetch Buffer
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This buffer is used for instruction fetches and is enabled by default after
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reset.
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Note carefully the clock restrictions under which the prefetch buffer may be
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enabled or disabled. Changes are normally made while the clock is running in
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the power-on low frequency mode before being set to a higher speed mode.
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See the reference manual for details.
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*/
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void flash_prefetch_enable(void)
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{
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FLASH_ACR |= FLASH_ACR_PRFTEN;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Disable the FLASH Prefetch Buffer
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Note carefully the clock restrictions under which the prefetch buffer may be
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set to disabled. See the reference manual for details.
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*/
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void flash_prefetch_disable(void)
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{
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FLASH_ACR &= ~FLASH_ACR_PRFTEN;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Reset the Data Cache
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The data cache must be disabled for this to have effect.
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*/
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void flash_dcache_reset(void)
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{
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FLASH_ACR |= FLASH_ACR_DCRST;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Reset the Instruction Cache
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The instruction cache must be disabled for this to have effect.
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*/
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void flash_icache_reset(void)
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{
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FLASH_ACR |= FLASH_ACR_ICRST;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear the Programming Sequence Error Flag
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This flag is set when incorrect programming configuration has been made.
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*/
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void flash_clear_pgserr_flag(void)
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{
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FLASH_SR |= FLASH_SR_PGSERR;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear the Programming Alignment Error Flag
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*/
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void flash_clear_pgaerr_flag(void)
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{
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FLASH_SR |= FLASH_SR_PGAERR;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear the Write Protect Error Flag
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*/
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void flash_clear_wrperr_flag(void)
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{
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FLASH_SR |= FLASH_SR_WRPERR;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear All Status Flags
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Program error, end of operation, write protect error, busy.
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*/
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void flash_clear_status_flags(void)
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{
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flash_clear_pgserr_flag();
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@ -91,6 +180,13 @@ void flash_clear_status_flags(void)
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flash_clear_bsy_flag();
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Unlock the Option Byte Access
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This enables write access to the option bytes. It is locked by default on
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reset.
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*/
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void flash_unlock_option_bytes(void)
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{
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/* Clear the unlock state. */
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@ -101,11 +197,29 @@ void flash_unlock_option_bytes(void)
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FLASH_OPTKEYR = FLASH_OPTKEYR_KEY2;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Lock the Option Byte Access
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This disables write access to the option bytes. It is locked by default on
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reset.
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*/
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void flash_lock_option_bytes(void)
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{
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FLASH_OPTCR |= FLASH_OPTCR_OPTLOCK;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Program a 64 bit Word to FLASH
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This performs all operations necessary to program a 64 bit word to FLASH memory.
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The program error flag should be checked separately for the event that memory
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was not properly erased.
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@param[in] uint32_t address
|
||||
@param[in] uint64_t data.
|
||||
*/
|
||||
|
||||
void flash_program_double_word(uint32_t address, uint64_t data)
|
||||
{
|
||||
/* Ensure that all flash operations are complete. */
|
||||
|
|
@ -125,6 +239,17 @@ void flash_program_double_word(uint32_t address, uint64_t data)
|
|||
FLASH_CR &= ~FLASH_CR_PG;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a 32 bit Word to FLASH
|
||||
|
||||
This performs all operations necessary to program a 32 bit word to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address
|
||||
@param[in] uint32_t data.
|
||||
*/
|
||||
|
||||
void flash_program_word(uint32_t address, uint32_t data)
|
||||
{
|
||||
/* Ensure that all flash operations are complete. */
|
||||
|
|
@ -144,6 +269,17 @@ void flash_program_word(uint32_t address, uint32_t data)
|
|||
FLASH_CR &= ~FLASH_CR_PG;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a Half Word to FLASH
|
||||
|
||||
This performs all operations necessary to program a 16 bit word to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address
|
||||
@param[in] uint16_t data.
|
||||
*/
|
||||
|
||||
void flash_program_half_word(uint32_t address, uint16_t data)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -158,6 +294,17 @@ void flash_program_half_word(uint32_t address, uint16_t data)
|
|||
FLASH_CR &= ~FLASH_CR_PG; /* Disable the PG bit. */
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program an 8 bit Byte to FLASH
|
||||
|
||||
This performs all operations necessary to program an 8 bit byte to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address
|
||||
@param[in] uint8_t data.
|
||||
*/
|
||||
|
||||
void flash_program_byte(uint32_t address, uint8_t data)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -172,6 +319,18 @@ void flash_program_byte(uint32_t address, uint8_t data)
|
|||
FLASH_CR &= ~FLASH_CR_PG; /* Disable the PG bit. */
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a Data Block to FLASH
|
||||
|
||||
This programs an arbitrary length data block to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address. Starting address in Flash.
|
||||
@param[in] uint8_t *data. Pointer to start of data block.
|
||||
@param[in] uint32_t len. Length of data block.
|
||||
*/
|
||||
|
||||
void flash_program(uint32_t address, uint8_t *data, uint32_t len)
|
||||
{
|
||||
/* TODO: Use dword and word size program operations where possible for
|
||||
|
|
@ -183,6 +342,19 @@ void flash_program(uint32_t address, uint8_t *data, uint32_t len)
|
|||
}
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase a Sector of FLASH
|
||||
|
||||
This performs all operations necessary to erase a sector in FLASH memory.
|
||||
The page should be checked to ensure that it was properly erased. A sector must
|
||||
first be fully erased before attempting to program it.
|
||||
|
||||
See the reference manual or the FLASH programming manual for details.
|
||||
|
||||
@param[in] uint32_t sector (0 - 11).
|
||||
@param program_size: 0 (8-bit), 1 (16-bit), 2 (32-bit), 3 (64-bit)
|
||||
*/
|
||||
|
||||
void flash_erase_sector(uint8_t sector, uint32_t program_size)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -198,6 +370,15 @@ void flash_erase_sector(uint8_t sector, uint32_t program_size)
|
|||
FLASH_CR &= ~(0xF << 3);
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase All FLASH
|
||||
|
||||
This performs all operations necessary to erase all sectors in the FLASH
|
||||
memory.
|
||||
|
||||
@param program_size: 0 (8-bit), 1 (16-bit), 2 (32-bit), 3 (64-bit)
|
||||
*/
|
||||
|
||||
void flash_erase_all_sectors(uint32_t program_size)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -210,6 +391,16 @@ void flash_erase_all_sectors(uint32_t program_size)
|
|||
FLASH_CR &= ~FLASH_CR_MER; /* Disable mass erase. */
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program the Option Bytes
|
||||
|
||||
This performs all operations necessary to program the option bytes.
|
||||
The write protect error flag should be checked separately for the event that
|
||||
an option byte was not properly erased.
|
||||
|
||||
@param[in] uint32_t data to be programmed.
|
||||
*/
|
||||
|
||||
void flash_program_option_bytes(uint32_t data)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -222,3 +413,5 @@ void flash_program_option_bytes(uint32_t data)
|
|||
FLASH_OPTCR |= FLASH_OPTCR_OPTSTRT; /* Enable option byte prog. */
|
||||
flash_wait_for_last_operation();
|
||||
}
|
||||
/**@}*/
|
||||
|
||||
|
|
|
|||
|
|
@ -1,3 +1,22 @@
|
|||
/** @defgroup flash_file FLASH
|
||||
*
|
||||
* @ingroup STM32F0xx
|
||||
*
|
||||
* @brief <b>libopencm3 STM32F05x FLASH</b>
|
||||
*
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @author @htmlonly © @endhtmlonly 2013
|
||||
* Frantisek Burian <BuFran@seznam.cz>
|
||||
*
|
||||
* @date 14 January 2014
|
||||
*
|
||||
* For the STM32F05x, accessing FLASH memory is described in
|
||||
* section 3 of the STM32F05x Reference Manual.
|
||||
*
|
||||
* LGPL License Terms @ref lgpl_license
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
|
|
@ -17,28 +36,77 @@
|
|||
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**@{*/
|
||||
|
||||
#include <libopencm3/stm32/flash.h>
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Enable the FLASH Prefetch Buffer
|
||||
|
||||
This buffer is used for instruction fetches and is enabled by default after
|
||||
reset.
|
||||
|
||||
Note carefully the clock restrictions under which the prefetch buffer may be
|
||||
enabled or disabled. Changes are normally made while the clock is running in
|
||||
the power-on low frequency mode before being set to a higher speed mode.
|
||||
See the reference manual for details.
|
||||
*/
|
||||
|
||||
void flash_prefetch_buffer_enable(void)
|
||||
{
|
||||
FLASH_ACR |= FLASH_ACR_PRFTBE;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Disable the FLASH Prefetch Buffer
|
||||
|
||||
Note carefully the clock restrictions under which the prefetch buffer may be
|
||||
set to disabled. See the reference manual for details.
|
||||
*/
|
||||
|
||||
void flash_prefetch_buffer_disable(void)
|
||||
{
|
||||
FLASH_ACR &= ~FLASH_ACR_PRFTBE;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Set the Number of Wait States
|
||||
|
||||
Used to match the system clock to the FLASH memory access time. See the
|
||||
reference manual for more information on clock speed ranges for each wait state.
|
||||
The latency must be changed to the appropriate value <b>before</b> any increase
|
||||
in clock speed, or <b>after</b> any decrease in clock speed.
|
||||
|
||||
@param[in] uint32_t ws: values 0 or 1 only.
|
||||
*/
|
||||
|
||||
void flash_set_ws(uint32_t ws)
|
||||
{
|
||||
FLASH_ACR = (FLASH_ACR & ~FLASH_ACR_LATENCY) | ws;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Wait for Busy Flag
|
||||
|
||||
This loops indefinitely until the busy flag is clear.
|
||||
*/
|
||||
|
||||
void flash_wait_busy(void)
|
||||
{
|
||||
while ((FLASH_SR & FLASH_SR_BSY) != 0);
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a 32 bit Word to FLASH
|
||||
|
||||
This performs all operations necessary to program a 32 bit word to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address. Full address of flash word to be programmed.
|
||||
@param[in] uint32_t data.
|
||||
*/
|
||||
|
||||
void flash_program_u32(uint32_t address, uint32_t data)
|
||||
{
|
||||
flash_wait_busy();
|
||||
|
|
@ -56,6 +124,17 @@ void flash_program_u32(uint32_t address, uint32_t data)
|
|||
FLASH_CR &= ~FLASH_CR_PG;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a Half Word to FLASH
|
||||
|
||||
This performs all operations necessary to program a 16 bit word to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address Full address of flash half word to be programmed.
|
||||
@param[in] uint16_t data.
|
||||
*/
|
||||
|
||||
void flash_program_u16(uint32_t address, uint16_t data)
|
||||
{
|
||||
flash_wait_busy();
|
||||
|
|
@ -69,6 +148,19 @@ void flash_program_u16(uint32_t address, uint16_t data)
|
|||
FLASH_CR &= ~FLASH_CR_PG;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase a Page of FLASH
|
||||
|
||||
This performs all operations necessary to erase a page in FLASH memory.
|
||||
The page should be checked to ensure that it was properly erased. A page must
|
||||
first be fully erased before attempting to program it.
|
||||
|
||||
Note that the page sizes differ between devices. See the reference manual or
|
||||
the FLASH programming manual for details.
|
||||
|
||||
@param[in] uint32_t page_address. Full address of flash page to be erased.
|
||||
*/
|
||||
|
||||
void flash_erase_page(uint32_t page_address)
|
||||
{
|
||||
flash_wait_busy();
|
||||
|
|
@ -81,6 +173,13 @@ void flash_erase_page(uint32_t page_address)
|
|||
FLASH_CR &= ~FLASH_CR_PER;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase All FLASH
|
||||
|
||||
This performs all operations necessary to erase all user pages in the FLASH
|
||||
memory. The information block is unaffected.
|
||||
*/
|
||||
|
||||
void flash_erase_all_pages(void)
|
||||
{
|
||||
flash_wait_busy();
|
||||
|
|
@ -91,3 +190,5 @@ void flash_erase_all_pages(void)
|
|||
flash_wait_busy();
|
||||
FLASH_CR &= ~FLASH_CR_MER; /* Disable mass erase. */
|
||||
}
|
||||
/**@}*/
|
||||
|
||||
|
|
|
|||
|
|
@ -1,3 +1,32 @@
|
|||
/** @defgroup flash_file FLASH
|
||||
*
|
||||
* @ingroup STM32F1xx
|
||||
*
|
||||
* @brief <b>libopencm3 STM32F1xx FLASH Memory</b>
|
||||
*
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Thomas Otto <tommi@viadmin.org>
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Mark Butler <mbutler@physics.otago.ac.nz>
|
||||
*
|
||||
* @date 14 January 2014
|
||||
*
|
||||
* For the STM32F1xx, accessing FLASH memory is described briefly in
|
||||
* section 3.3.3 of the STM32F10x Reference Manual.
|
||||
* For detailed programming information see:
|
||||
* PM0075 programming manual: STM32F10xxx Flash programming
|
||||
* August 2010, Doc ID 17863 Rev 1
|
||||
* https://github.com/libopencm3/libopencm3-archive/blob/master/st_micro/CD00283419.pdf
|
||||
*
|
||||
* FLASH memory may be used for data storage as well as code, and may be
|
||||
* programmatically modified. Note that for firmware upload the STM32F1xx
|
||||
* provides a built-in bootloader in system memory that can be entered from a
|
||||
* running program.
|
||||
*
|
||||
* LGPL License Terms @ref lgpl_license
|
||||
*/
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
|
|
@ -18,28 +47,77 @@
|
|||
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <libopencm3/stm32/f1/flash.h>
|
||||
/**@{*/
|
||||
|
||||
#include <libopencm3/stm32/flash.h>
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Enable the FLASH Prefetch Buffer
|
||||
|
||||
This buffer is used for instruction fetches and is enabled by default after
|
||||
reset.
|
||||
|
||||
Note carefully the clock restrictions under which the prefetch buffer may be
|
||||
enabled or disabled. Changes are normally made while the clock is running in
|
||||
the power-on low frequency mode before being set to a higher speed mode.
|
||||
See the reference manual for details.
|
||||
*/
|
||||
|
||||
void flash_prefetch_buffer_enable(void)
|
||||
{
|
||||
FLASH_ACR |= FLASH_ACR_PRFTBE;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Disable the FLASH Prefetch Buffer
|
||||
|
||||
Note carefully the clock restrictions under which the prefetch buffer may be
|
||||
set to disabled. See the reference manual for details.
|
||||
*/
|
||||
|
||||
void flash_prefetch_buffer_disable(void)
|
||||
{
|
||||
FLASH_ACR &= ~FLASH_ACR_PRFTBE;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Enable the FLASH Half Cycle Mode
|
||||
|
||||
This mode is used for power saving during read access. It is disabled by default
|
||||
on reset.
|
||||
|
||||
Note carefully the clock restrictions under which the half cycle mode may be
|
||||
enabled or disabled. This mode may only be used while the clock is running at
|
||||
8MHz. See the reference manual for details.
|
||||
*/
|
||||
|
||||
void flash_halfcycle_enable(void)
|
||||
{
|
||||
FLASH_ACR |= FLASH_ACR_HLFCYA;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Disable the FLASH Half Cycle Mode
|
||||
|
||||
*/
|
||||
|
||||
void flash_halfcycle_disable(void)
|
||||
{
|
||||
FLASH_ACR &= ~FLASH_ACR_HLFCYA;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Set the Number of Wait States
|
||||
|
||||
Used to match the system clock to the FLASH memory access time. See the
|
||||
reference manual for more information on clock speed ranges for each wait state.
|
||||
The latency must be changed to the appropriate value <b>before</b> any increase
|
||||
in clock speed, or <b>after</b> any decrease in clock speed.
|
||||
|
||||
|
||||
@param[in] uint32_t ws: values 0, 1 or 2 only.
|
||||
*/
|
||||
|
||||
void flash_set_ws(uint32_t ws)
|
||||
{
|
||||
uint32_t reg32;
|
||||
|
|
@ -50,6 +128,13 @@ void flash_set_ws(uint32_t ws)
|
|||
FLASH_ACR = reg32;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Unlock the Flash Program and Erase Controller
|
||||
|
||||
This enables write access to the Flash memory. It is locked by default on
|
||||
reset.
|
||||
*/
|
||||
|
||||
void flash_unlock(void)
|
||||
{
|
||||
/* Clear the unlock state. */
|
||||
|
|
@ -60,31 +145,63 @@ void flash_unlock(void)
|
|||
FLASH_KEYR = FLASH_KEYR_KEY2;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Lock the Flash Program and Erase Controller
|
||||
|
||||
Used to prevent spurious writes to FLASH.
|
||||
*/
|
||||
|
||||
void flash_lock(void)
|
||||
{
|
||||
FLASH_CR |= FLASH_CR_LOCK;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Clear the Programming Error Status Flag
|
||||
|
||||
*/
|
||||
|
||||
void flash_clear_pgerr_flag(void)
|
||||
{
|
||||
FLASH_SR |= FLASH_SR_PGERR;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Clear the End of Operation Status Flag
|
||||
|
||||
*/
|
||||
|
||||
void flash_clear_eop_flag(void)
|
||||
{
|
||||
FLASH_SR |= FLASH_SR_EOP;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Clear the Write Protect Error Status Flag
|
||||
|
||||
*/
|
||||
|
||||
void flash_clear_wrprterr_flag(void)
|
||||
{
|
||||
FLASH_SR |= FLASH_SR_WRPRTERR;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Clear the Busy Status Flag
|
||||
|
||||
*/
|
||||
|
||||
void flash_clear_bsy_flag(void)
|
||||
{
|
||||
FLASH_SR &= ~FLASH_SR_BSY;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Clear All Status Flags
|
||||
|
||||
Program error, end of operation, write protect error, busy.
|
||||
*/
|
||||
|
||||
void flash_clear_status_flags(void)
|
||||
{
|
||||
flash_clear_pgerr_flag();
|
||||
|
|
@ -93,6 +210,16 @@ void flash_clear_status_flags(void)
|
|||
flash_clear_bsy_flag();
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Read All Status Flags
|
||||
|
||||
The programming error, end of operation, write protect error and busy flags
|
||||
are returned in the order of appearance in the status register.
|
||||
|
||||
@returns uint32_t. bit 0: busy, bit 2: programming error, bit 4: write protect
|
||||
error, bit 5: end of operation.
|
||||
*/
|
||||
|
||||
uint32_t flash_get_status_flags(void)
|
||||
{
|
||||
return FLASH_SR &= (FLASH_SR_PGERR |
|
||||
|
|
@ -101,6 +228,13 @@ uint32_t flash_get_status_flags(void)
|
|||
FLASH_SR_BSY);
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Unlock the Option Byte Access
|
||||
|
||||
This enables write access to the option bytes. It is locked by default on
|
||||
reset.
|
||||
*/
|
||||
|
||||
void flash_unlock_option_bytes(void)
|
||||
{
|
||||
/* F1 uses same keys for flash and option */
|
||||
|
|
@ -108,11 +242,29 @@ void flash_unlock_option_bytes(void)
|
|||
FLASH_OPTKEYR = FLASH_KEYR_KEY2;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @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)
|
||||
{
|
||||
while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a 32 bit Word to FLASH
|
||||
|
||||
This performs all operations necessary to program a 32 bit word to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address. Full address of flash word to be programmed.
|
||||
@param[in] uint32_t data.
|
||||
*/
|
||||
|
||||
void flash_program_word(uint32_t address, uint32_t data)
|
||||
{
|
||||
/* Ensure that all flash operations are complete. */
|
||||
|
|
@ -137,6 +289,17 @@ void flash_program_word(uint32_t address, uint32_t data)
|
|||
flash_wait_for_last_operation();
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program a Half Word to FLASH
|
||||
|
||||
This performs all operations necessary to program a 16 bit word to FLASH memory.
|
||||
The program error flag should be checked separately for the event that memory
|
||||
was not properly erased.
|
||||
|
||||
@param[in] uint32_t address. Full address of flash half word to be programmed.
|
||||
@param[in] uint16_t data.
|
||||
*/
|
||||
|
||||
void flash_program_half_word(uint32_t address, uint16_t data)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -148,6 +311,19 @@ void flash_program_half_word(uint32_t address, uint16_t data)
|
|||
flash_wait_for_last_operation();
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase a Page of FLASH
|
||||
|
||||
This performs all operations necessary to erase a page in FLASH memory.
|
||||
The page should be checked to ensure that it was properly erased. A page must
|
||||
first be fully erased before attempting to program it.
|
||||
|
||||
Note that the page sizes differ between devices. See the reference manual or
|
||||
the FLASH programming manual for details.
|
||||
|
||||
@param[in] uint32_t page_address. Full address of flash psge to be erased.
|
||||
*/
|
||||
|
||||
void flash_erase_page(uint32_t page_address)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -160,6 +336,13 @@ void flash_erase_page(uint32_t page_address)
|
|||
FLASH_CR &= ~FLASH_CR_PER;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase All FLASH
|
||||
|
||||
This performs all operations necessary to erase all user pages in the FLASH
|
||||
memory. The information block is unaffected.
|
||||
*/
|
||||
|
||||
void flash_erase_all_pages(void)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -171,6 +354,13 @@ void flash_erase_all_pages(void)
|
|||
FLASH_CR &= ~FLASH_CR_MER; /* Disable mass erase. */
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Erase All Option Bytes
|
||||
|
||||
This performs all operations necessary to erase the option bytes. These must
|
||||
first be fully erased before attempting to program them.
|
||||
*/
|
||||
|
||||
void flash_erase_option_bytes(void)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -185,6 +375,17 @@ void flash_erase_option_bytes(void)
|
|||
FLASH_CR &= ~FLASH_CR_OPTER; /* Disable option byte erase. */
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Program the Option Bytes
|
||||
|
||||
This performs all operations necessary to program the option bytes.
|
||||
The write protect error flag should be checked separately for the event that
|
||||
an option byte was not properly erased.
|
||||
|
||||
@param[in] uint32_t address. Full address of option byte to program.
|
||||
@param[in] uint16_t data.
|
||||
*/
|
||||
|
||||
void flash_program_option_bytes(uint32_t address, uint16_t data)
|
||||
{
|
||||
flash_wait_for_last_operation();
|
||||
|
|
@ -198,3 +399,5 @@ void flash_program_option_bytes(uint32_t address, uint16_t data)
|
|||
flash_wait_for_last_operation();
|
||||
FLASH_CR &= ~FLASH_CR_OPTPG; /* Disable option byte programming. */
|
||||
}
|
||||
/**@}*/
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,53 @@
|
|||
/** @defgroup flash_file FLASH
|
||||
*
|
||||
* @ingroup STM32F2xx
|
||||
*
|
||||
* @brief <b>libopencm3 STM32F2xx FLASH</b>
|
||||
*
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Thomas Otto <tommi@viadmin.org>
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Mark Butler <mbutler@physics.otago.ac.nz>
|
||||
*
|
||||
* @date 14 January 2014
|
||||
*
|
||||
* This library supports the FLASH memory controller in the STM32F2
|
||||
* series of ARM Cortex Microcontrollers by ST Microelectronics.
|
||||
*
|
||||
* For the STM32F2xx, accessing FLASH memory is described briefly in
|
||||
* section 2.3.3 of the STM32F2xx Reference Manual.
|
||||
* For detailed programming information see:
|
||||
* PM0059 programming manual: STM32F10xxx Flash programming
|
||||
* June 2013, Doc ID DocID15687 Rev 5
|
||||
*
|
||||
* LGPL License Terms @ref lgpl_license
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* 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>
|
||||
|
||||
/**@}*/
|
||||
|
||||
|
|
@ -6,10 +6,22 @@
|
|||
*
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @date 11 July 2013
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Thomas Otto <tommi@viadmin.org>
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Mark Butler <mbutler@physics.otago.ac.nz>
|
||||
*
|
||||
* @date 14 January 2014
|
||||
*
|
||||
* This library supports the FLASH memory controller in the STM32F3
|
||||
* series of ARM Cortex Microcontrollers by ST Microelectronics.
|
||||
*
|
||||
* For the STM32F3xx, accessing FLASH memory is described in
|
||||
* section 3 of the STM32F3xx Reference Manual.
|
||||
*
|
||||
* LGPL License Terms @ref lgpl_license
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
|
|
@ -30,11 +42,21 @@
|
|||
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**@{*/
|
||||
|
||||
#include <libopencm3/stm32/flash.h>
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Clear All Status Flags
|
||||
|
||||
Clears program error, end of operation, busy flags.
|
||||
*/
|
||||
|
||||
void flash_clear_status_flags(void)
|
||||
{
|
||||
flash_clear_pgperr_flag();
|
||||
flash_clear_eop_flag();
|
||||
flash_clear_bsy_flag();
|
||||
}
|
||||
/**@}*/
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,53 @@
|
|||
/** @defgroup flash_file FLASH
|
||||
*
|
||||
* @ingroup STM32F4xx
|
||||
*
|
||||
* @brief <b>libopencm3 STM32F4xx FLASH</b>
|
||||
*
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Thomas Otto <tommi@viadmin.org>
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Mark Butler <mbutler@physics.otago.ac.nz>
|
||||
*
|
||||
* @date 14 January 2014
|
||||
*
|
||||
* This library supports the FLASH memory controller in the STM32F4
|
||||
* series of ARM Cortex Microcontrollers by ST Microelectronics.
|
||||
*
|
||||
* For the STM32F4xx, accessing FLASH memory is described briefly in
|
||||
* section 2.3.3 of the STM32F4xx Reference Manual.
|
||||
* For detailed programming information see:
|
||||
* PM0081 programming manual: STM32F10xxx Flash programming
|
||||
* September 2011, Doc ID 018520 Rev 1
|
||||
*
|
||||
* LGPL License Terms @ref lgpl_license
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
* 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>
|
||||
|
||||
/**@}*/
|
||||
|
||||
|
|
@ -1,3 +1,29 @@
|
|||
/** @defgroup flash_file FLASH
|
||||
*
|
||||
* @ingroup STM32L1xx
|
||||
*
|
||||
* @brief <b>libopencm3 STM32L1xx FLASH</b>
|
||||
*
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Thomas Otto <tommi@viadmin.org>
|
||||
* @author @htmlonly © @endhtmlonly 2010
|
||||
* Mark Butler <mbutler@physics.otago.ac.nz>
|
||||
* @author @htmlonly © @endhtmlonly 2012
|
||||
* Karl Palsson <karlp@tweak.net.au>
|
||||
*
|
||||
* @date 14 January 2014
|
||||
*
|
||||
* For the STM32L1xx, accessing FLASH memory is described briefly in
|
||||
* section 2.3.3 of the STM32L1xx Reference Manual.
|
||||
* For detailed programming information see:
|
||||
* PM0062 programming manual: STM32L1xxxx Flash and EEPROM programming
|
||||
* March 2012, Doc ID 16024 Rev 5
|
||||
*
|
||||
* LGPL License Terms @ref lgpl_license
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file is part of the libopencm3 project.
|
||||
*
|
||||
|
|
@ -19,28 +45,72 @@
|
|||
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <libopencm3/stm32/l1/flash.h>
|
||||
/**@{*/
|
||||
|
||||
#include <libopencm3/stm32/flash.h>
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Enable 64 Bit Programming Mode
|
||||
|
||||
*/
|
||||
|
||||
void flash_64bit_enable(void)
|
||||
{
|
||||
FLASH_ACR |= FLASH_ACR_ACC64;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Enable 32 Bit Programming Mode
|
||||
|
||||
This mode is a low power mode. It must be used at low frequencies and does not
|
||||
allow prefetch or wait states to be used.
|
||||
*/
|
||||
|
||||
void flash_64bit_disable(void)
|
||||
{
|
||||
FLASH_ACR &= ~FLASH_ACR_ACC64;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Enable the FLASH Prefetch Buffer
|
||||
|
||||
This buffer is used for instruction fetches and is enabled by default after
|
||||
reset.
|
||||
|
||||
Note carefully the restrictions under which the prefetch buffer may be
|
||||
enabled or disabled. Prefetch is only available when 64-bit
|
||||
access is enabled.
|
||||
*/
|
||||
|
||||
void flash_prefetch_enable(void)
|
||||
{
|
||||
FLASH_ACR |= FLASH_ACR_PRFTEN;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Disable the FLASH Prefetch Buffer
|
||||
|
||||
Note carefully the restrictions under which the prefetch buffer may be
|
||||
set to disabled. See the reference and programming manuals for details.
|
||||
*/
|
||||
|
||||
void flash_prefetch_disable(void)
|
||||
{
|
||||
FLASH_ACR &= ~FLASH_ACR_PRFTEN;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** @brief Set the Number of Wait States
|
||||
|
||||
Used to match the system clock to the FLASH memory access time. See the
|
||||
programming manual for more information on clock speed and voltage ranges. The
|
||||
latency must be changed to the appropriate value <b>before</b> any increase in
|
||||
clock speed, or <b>after</b> any decrease in clock speed. A latency setting of
|
||||
zero only applies if 64-bit mode is not used.
|
||||
|
||||
@param[in] uint32_t ws: values 0 or 1 only.
|
||||
*/
|
||||
|
||||
void flash_set_ws(uint32_t ws)
|
||||
{
|
||||
uint32_t reg32;
|
||||
|
|
@ -50,3 +120,5 @@ void flash_set_ws(uint32_t ws)
|
|||
reg32 |= ws;
|
||||
FLASH_ACR = reg32;
|
||||
}
|
||||
/**@}*/
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue