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authorKarl Palsson2012-11-09 21:38:06 +0000
committerKarl Palsson2012-11-14 00:16:46 +0000
commit72666a5b936368275423f0735af7939473616d68 (patch)
tree45a81b4a785ddadca8a02b86171a0b5fc4fa0685 /lib
parent70746ccd676445481511c0e8bc6b617f7b052878 (diff)
[l1] Add Flash Memory Controller Register defns for L1.
Also, some of the most basic essential helper functions.
Diffstat (limited to 'lib')
-rw-r--r--lib/stm32/l1/Makefile2
-rw-r--r--lib/stm32/l1/flash.c52
2 files changed, 53 insertions, 1 deletions
diff --git a/lib/stm32/l1/Makefile b/lib/stm32/l1/Makefile
index 7f3e157..dc587c2 100644
--- a/lib/stm32/l1/Makefile
+++ b/lib/stm32/l1/Makefile
@@ -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
diff --git a/lib/stm32/l1/flash.c b/lib/stm32/l1/flash.c
new file mode 100644
index 0000000..06e8a59
--- /dev/null
+++ b/lib/stm32/l1/flash.c
@@ -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;
+} \ No newline at end of file