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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
/**
* @file flash.c
* @brief Flash management functions
*/
#include <libmaple/libmaple.h>
#include <libmaple/flash.h>
#include <libmaple/bitband.h>
/**
* @brief Turn on the hardware prefetcher.
*/
void flash_enable_prefetch(void) {
*bb_perip(&FLASH_BASE->ACR, FLASH_ACR_PRFTBE_BIT) = 1;
}
/**
* @brief Set flash wait states
*
* See ST PM0042, section 3.1 for restrictions on the acceptable value
* of wait_states for a given SYSCLK configuration.
*
* @param wait_states number of wait states (one of
* FLASH_WAIT_STATE_0, FLASH_WAIT_STATE_1,
* FLASH_WAIT_STATE_2).
*/
void flash_set_latency(uint32 wait_states) {
uint32 val = FLASH_BASE->ACR;
val &= ~FLASH_ACR_LATENCY;
val |= wait_states;
FLASH_BASE->ACR = val;
}
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