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[l1] Add Flash Memory Controller Register defns for L1.

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Also, some of the most basic essential helper functions.
This commit is contained in:
Karl Palsson
2012-11-09 21:38:06 +00:00
parent 70746ccd67
commit 72666a5b93
3 changed files with 178 additions and 1 deletions
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2
lib/stm32/l1/Makefile
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@@ -29,7 +29,7 @@ CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \
# ARFLAGS = rcsv
ARFLAGS = rcs
OBJS = rcc.o gpio.o desig.o crc.o usart.o exti2.o \
gpio_common_all.o gpio_common_f24.o
flash.o gpio_common_all.o gpio_common_f24.o
VPATH += ../../usb:../:../../cm3:../common

52
lib/stm32/l1/flash.c Normal file
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@@ -0,0 +1,52 @@
/*
* 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>
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* 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/l1/flash.h>
void flash_64bit_enable(void)
{
FLASH_ACR |= FLASH_ACC64;
}
void flash_64bit_disable(void)
{
FLASH_ACR &= ~FLASH_ACC64;
}
void flash_prefetch_enable(void)
{
FLASH_ACR |= FLASH_PRFTEN;
}
void flash_prefetch_disable(void)
{
FLASH_ACR &= ~FLASH_PRFTEN;
}
void flash_set_ws(u32 ws)
{
u32 reg32;
reg32 = FLASH_ACR;
reg32 &= ~(1 << 0);
reg32 |= ws;
FLASH_ACR = reg32;
}