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authorStephen Caudle2011-10-31 00:24:47 -0400
committerStephen Caudle2011-10-31 00:41:19 -0400
commit5a89d4459146edfb073e8ffa299cd9598a98c27c (patch)
tree8b2b4cd7da3bec9f611c6917c7434faa1fd8ab87 /lib/stm32/f4
parent05bc9d10f15332358b18014d335a79fa3f4ed21c (diff)
Add initial support for STM32F4
Diffstat (limited to 'lib/stm32/f4')
-rw-r--r--lib/stm32/f4/Makefile59
-rw-r--r--lib/stm32/f4/exti.c146
-rw-r--r--lib/stm32/f4/flash.c250
-rw-r--r--lib/stm32/f4/gpio.c139
-rw-r--r--lib/stm32/f4/libopencm3_stm32f4.ld63
-rw-r--r--lib/stm32/f4/pwr.c28
-rw-r--r--lib/stm32/f4/rcc.c434
-rw-r--r--lib/stm32/f4/scb.c30
-rw-r--r--lib/stm32/f4/vector.c336
9 files changed, 1485 insertions, 0 deletions
diff --git a/lib/stm32/f4/Makefile b/lib/stm32/f4/Makefile
new file mode 100644
index 0000000..267ef42
--- /dev/null
+++ b/lib/stm32/f4/Makefile
@@ -0,0 +1,59 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+LIBNAME = libopencm3_stm32f4
+
+PREFIX ?= arm-none-eabi
+# PREFIX ?= arm-elf
+CC = $(PREFIX)-gcc
+AR = $(PREFIX)-ar
+CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \
+ -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
+ -ffunction-sections -fdata-sections -MD -DSTM32F4
+# ARFLAGS = rcsv
+ARFLAGS = rcs
+OBJS = vector.o rcc.o gpio.o usart.o spi.o flash.o nvic.o \
+ i2c.o systick.o exti.o scb.o \
+
+VPATH += ../../usb:../
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+ifneq ($(V),1)
+Q := @
+endif
+
+all: $(LIBNAME).a
+
+$(LIBNAME).a: $(OBJS)
+ @printf " AR $(subst $(shell pwd)/,,$(@))\n"
+ $(Q)$(AR) $(ARFLAGS) $@ $^
+
+%.o: %.c
+ @printf " CC $(subst $(shell pwd)/,,$(@))\n"
+ $(Q)$(CC) $(CFLAGS) -o $@ -c $<
+
+clean:
+ @printf " CLEAN lib/stm32/f4\n"
+ $(Q)rm -f *.o *.d
+ $(Q)rm -f $(LIBNAME).a
+
+.PHONY: clean
+
+-include $(OBJS:.o=.d)
+
diff --git a/lib/stm32/f4/exti.c b/lib/stm32/f4/exti.c
new file mode 100644
index 0000000..1a2a7a1
--- /dev/null
+++ b/lib/stm32/f4/exti.c
@@ -0,0 +1,146 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/exti.h>
+#include <libopencm3/stm32/f4/syscfg.h>
+#include <libopencm3/stm32/f4/gpio.h>
+
+void exti_set_trigger(u32 extis, exti_trigger_type trig)
+{
+ switch (trig) {
+ case EXTI_TRIGGER_RISING:
+ EXTI_RTSR |= extis;
+ EXTI_FTSR &= ~extis;
+ break;
+ case EXTI_TRIGGER_FALLING:
+ EXTI_RTSR &= ~extis;
+ EXTI_FTSR |= extis;
+ break;
+ case EXTI_TRIGGER_BOTH:
+ EXTI_RTSR |= extis;
+ EXTI_FTSR |= extis;
+ break;
+ }
+}
+
+void exti_enable_request(u32 extis)
+{
+ /* Enable interrupts. */
+ EXTI_IMR |= extis;
+
+ /* Enable events. */
+ EXTI_EMR |= extis;
+}
+
+void exti_disable_request(u32 extis)
+{
+ /* Disable interrupts. */
+ EXTI_IMR &= ~extis;
+
+ /* Disable events. */
+ EXTI_EMR &= ~extis;
+}
+
+/*
+ * Reset the interrupt request by writing a 1 to the corresponding
+ * pending bit register.
+ */
+void exti_reset_request(u32 extis)
+{
+ EXTI_PR = extis;
+}
+
+/*
+ * Remap an external interrupt line to the corresponding pin on the
+ * specified GPIO port.
+ *
+ * TODO: This could be rewritten in fewer lines of code.
+ */
+void exti_select_source(u32 exti, u32 gpioport)
+{
+ u8 shift, bits;
+
+ shift = bits = 0;
+
+ switch (exti) {
+ case EXTI0:
+ case EXTI4:
+ case EXTI8:
+ case EXTI12:
+ shift = 0;
+ break;
+ case EXTI1:
+ case EXTI5:
+ case EXTI9:
+ case EXTI13:
+ shift = 4;
+ break;
+ case EXTI2:
+ case EXTI6:
+ case EXTI10:
+ case EXTI14:
+ shift = 8;
+ break;
+ case EXTI3:
+ case EXTI7:
+ case EXTI11:
+ case EXTI15:
+ shift = 12;
+ break;
+ }
+
+ switch (gpioport) {
+ case GPIOA:
+ bits = 0xf;
+ break;
+ case GPIOB:
+ bits = 0xe;
+ break;
+ case GPIOC:
+ bits = 0xd;
+ break;
+ case GPIOD:
+ bits = 0xc;
+ break;
+ case GPIOE:
+ bits = 0xb;
+ break;
+ case GPIOF:
+ bits = 0xa;
+ break;
+ case GPIOG:
+ bits = 0x9;
+ break;
+ }
+
+ /* Ensure that only valid EXTI lines are used. */
+ if (exti < EXTI4) {
+ SYSCFG_EXTICR1 &= ~(0x000F << shift);
+ SYSCFG_EXTICR1 |= (~bits << shift);
+ } else if (exti < EXTI8) {
+ SYSCFG_EXTICR2 &= ~(0x000F << shift);
+ SYSCFG_EXTICR2 |= (~bits << shift);
+ } else if (exti < EXTI12) {
+ SYSCFG_EXTICR3 &= ~(0x000F << shift);
+ SYSCFG_EXTICR3 |= (~bits << shift);
+ } else if (exti < EXTI16) {
+ SYSCFG_EXTICR4 &= ~(0x000F << shift);
+ SYSCFG_EXTICR4 |= (~bits << shift);
+ }
+}
diff --git a/lib/stm32/f4/flash.c b/lib/stm32/f4/flash.c
new file mode 100644
index 0000000..a51b954
--- /dev/null
+++ b/lib/stm32/f4/flash.c
@@ -0,0 +1,250 @@
+/*
+ * 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 program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/f4/flash.h>
+
+static inline void flash_set_program_size(u32 psize)
+{
+ FLASH_CR &= ~(((1 << 0) | (1 << 1)) << 8);
+ FLASH_CR |= psize;
+}
+
+void flash_data_cache_enable(void)
+{
+ FLASH_ACR |= FLASH_DCE;
+}
+
+void flash_dcache_disable(void)
+{
+ FLASH_ACR &= ~FLASH_DCE;
+}
+
+void flash_icache_enable(void)
+{
+ FLASH_ACR |= FLASH_ICE;
+}
+
+void flash_icache_disable(void)
+{
+ FLASH_ACR &= ~FLASH_ICE;
+}
+
+void flash_prefetch_enable(void)
+{
+ FLASH_ACR |= FLASH_PRFTEN;
+}
+
+void flash_prefetch_disable(void)
+{
+ FLASH_ACR &= ~FLASH_PRFTEN;
+}
+
+void flash_dcache_reset(void)
+{
+ FLASH_ACR |= FLASH_DCRST;
+}
+
+void flash_icache_reset(void)
+{
+ FLASH_ACR |= FLASH_ICRST;
+}
+
+void flash_set_ws(u32 ws)
+{
+ u32 reg32;
+
+ reg32 = FLASH_ACR;
+ reg32 &= ~((1 << 0) | (1 << 1) | (1 << 2));
+ reg32 |= ws;
+ FLASH_ACR = reg32;
+}
+
+void flash_unlock(void)
+{
+ /* Authorize the FPEC access. */
+ FLASH_KEYR = FLASH_KEY1;
+ FLASH_KEYR = FLASH_KEY2;
+}
+
+void flash_lock(void)
+{
+ FLASH_CR |= FLASH_LOCK;
+}
+
+void flash_clear_pgserr_flag(void)
+{
+ FLASH_SR |= FLASH_PGSERR;
+}
+
+void flash_clear_pgperr_flag(void)
+{
+ FLASH_SR |= FLASH_PGPERR;
+}
+
+void flash_clear_pgaerr_flag(void)
+{
+ FLASH_SR |= FLASH_PGAERR;
+}
+
+void flash_clear_eop_flag(void)
+{
+ FLASH_SR |= FLASH_EOP;
+}
+
+void flash_clear_wrperr_flag(void)
+{
+ FLASH_SR |= FLASH_WRPERR;
+}
+
+void flash_clear_bsy_flag(void)
+{
+ FLASH_SR &= ~FLASH_BSY;
+}
+
+void flash_clear_status_flags(void)
+{
+ flash_clear_pgserr_flag();
+ flash_clear_pgperr_flag();
+ flash_clear_pgaerr_flag();
+ flash_clear_eop_flag();
+ flash_clear_wrperr_flag();
+ flash_clear_bsy_flag();
+}
+
+void flash_unlock_option_bytes(void)
+{
+ FLASH_OPTKEYR = FLASH_OPTKEY1;
+ FLASH_OPTKEYR = FLASH_OPTKEY2;
+}
+
+void flash_lock_option_bytes(void)
+{
+ FLASH_OPTCR |= FLASH_OPTLOCK;
+}
+
+void flash_wait_for_last_operation(void)
+{
+ while ((FLASH_SR & FLASH_BSY) == FLASH_BSY)
+ ;
+}
+
+void flash_program_double_word(u32 address, u64 data, u32 program_size)
+{
+ /* Ensure that all flash operations are complete. */
+ flash_wait_for_last_operation();
+ flash_set_program_size(program_size);
+
+ /* Enable writes to flash. */
+ FLASH_CR |= FLASH_PG;
+
+ /* Program the first half of the word. */
+ MMIO64(address) = data;
+
+ /* Wait for the write to complete. */
+ flash_wait_for_last_operation();
+
+ /* Disable writes to flash. */
+ FLASH_CR &= ~FLASH_PG;
+}
+
+void flash_program_word(u32 address, u32 data, u32 program_size)
+{
+ /* Ensure that all flash operations are complete. */
+ flash_wait_for_last_operation();
+ flash_set_program_size(program_size);
+
+ /* Enable writes to flash. */
+ FLASH_CR |= FLASH_PG;
+
+ /* Program the first half of the word. */
+ MMIO32(address) = data;
+
+ /* Wait for the write to complete. */
+ flash_wait_for_last_operation();
+
+ /* Disable writes to flash. */
+ FLASH_CR &= ~FLASH_PG;
+}
+
+void flash_program_half_word(u32 address, u16 data, u32 program_size)
+{
+ flash_wait_for_last_operation();
+ flash_set_program_size(program_size);
+
+ FLASH_CR |= FLASH_PG;
+
+ MMIO16(address) = data;
+
+ flash_wait_for_last_operation();
+
+ FLASH_CR &= ~FLASH_PG; /* Disable the PG bit. */
+}
+
+void flash_program_byte(u32 address, u8 data, u32 program_size)
+{
+ flash_wait_for_last_operation();
+ flash_set_program_size(program_size);
+
+ FLASH_CR |= FLASH_PG;
+
+ MMIO8(address) = data;
+
+ flash_wait_for_last_operation();
+
+ FLASH_CR &= ~FLASH_PG; /* Disable the PG bit. */
+}
+
+void flash_erase_sector(u32 sector, u32 program_size)
+{
+ flash_wait_for_last_operation();
+ flash_set_program_size(program_size);
+
+ FLASH_CR &= ~(((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3)) << 3);
+ FLASH_CR |= sector;
+ FLASH_CR |= FLASH_STRT;
+
+ flash_wait_for_last_operation();
+ FLASH_CR &= ~FLASH_SER;
+ FLASH_CR &= ~(((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3)) << 3);
+}
+
+void flash_erase_all_sectors(u32 program_size)
+{
+ flash_wait_for_last_operation();
+ flash_set_program_size(program_size);
+
+ FLASH_CR |= FLASH_MER; /* Enable mass erase. */
+ FLASH_CR |= FLASH_STRT; /* Trigger the erase. */
+
+ flash_wait_for_last_operation();
+ FLASH_CR &= ~FLASH_MER; /* Disable mass erase. */
+}
+
+void flash_program_option_bytes(u32 data)
+{
+ flash_wait_for_last_operation();
+
+ if (FLASH_OPTCR & FLASH_OPTLOCK)
+ flash_unlock_option_bytes();
+
+ FLASH_OPTCR = data & ~0x3;
+ FLASH_OPTCR |= FLASH_OPTSTRT; /* Enable option byte programming. */
+ flash_wait_for_last_operation();
+}
diff --git a/lib/stm32/f4/gpio.c b/lib/stm32/f4/gpio.c
new file mode 100644
index 0000000..c2b396b
--- /dev/null
+++ b/lib/stm32/f4/gpio.c
@@ -0,0 +1,139 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/f4/gpio.h>
+
+void gpio_mode_setup(u32 gpioport, u8 mode, u8 pull_up_down, u16 gpios)
+{
+ u16 i;
+ u32 moder, pupd;
+
+ /*
+ * We want to set the config only for the pins mentioned in gpios,
+ * but keeping the others, so read out the actual config first.
+ */
+ moder = GPIO_MODER(gpioport);
+ pupd = GPIO_PUPDR(gpioport);
+
+ for (i = 0; i < 16; i++) {
+ if (!((1 << i) & gpios))
+ continue;
+
+ moder &= ~GPIO_MODE_MASK(i);
+ moder |= GPIO_MODE(i, mode);
+ pupd &= ~GPIO_PUPD_MASK(i);
+ pupd |= GPIO_PUPD(i, pull_up_down);
+ }
+
+ /* Set mode and pull up/down control registers. */
+ GPIO_MODER(gpioport) = moder;
+ GPIO_PUPDR(gpioport) = pupd;
+}
+
+void gpio_set_output_options(u32 gpioport, u8 otype, u8 speed, u16 gpios)
+{
+ u16 i;
+ u32 ospeedr;
+
+ if (otype == 0x1)
+ GPIO_OTYPER(gpioport) |= gpios;
+ else
+ GPIO_OTYPER(gpioport) &= ~gpios;
+
+ ospeedr = GPIO_OSPEEDR(gpioport);
+
+ for (i = 0; i < 16; i++) {
+ if (!((1 << i) & gpios))
+ continue;
+ ospeedr &= ~GPIO_OSPEED_MASK(i);
+ ospeedr |= GPIO_OSPEED(i, speed);
+ }
+
+ GPIO_OSPEEDR(gpioport) = ospeedr;
+}
+
+void gpio_set_af(u32 gpioport, u8 alt_func_num, u16 gpios)
+{
+ u16 i;
+ u32 afrl, afrh;
+
+ afrl = GPIO_AFRL(gpioport);
+ afrh = GPIO_AFRH(gpioport);
+
+ for (i = 0; i < 8; i++) {
+ if (!((1 << i) & gpios))
+ continue;
+ afrl &= GPIO_AFR_MASK(i);
+ afrl |= GPIO_AFR(i, alt_func_num);
+ }
+
+ for (i = 8; i < 16; i++) {
+ if (!((1 << i) & gpios))
+ continue;
+ afrl &= GPIO_AFR_MASK(i-8);
+ afrh |= GPIO_AFR(i-8, alt_func_num);
+ }
+
+ GPIO_AFRL(gpioport) = afrl;
+ GPIO_AFRH(gpioport) = afrh;
+}
+
+void gpio_set(u32 gpioport, u16 gpios)
+{
+ GPIO_BSRR(gpioport) = gpios;
+}
+
+void gpio_clear(u32 gpioport, u16 gpios)
+{
+ GPIO_BSRR(gpioport) = gpios << 16;
+}
+
+u16 gpio_get(u32 gpioport, u16 gpios)
+{
+ return gpio_port_read(gpioport) & gpios;
+}
+
+void gpio_toggle(u32 gpioport, u16 gpios)
+{
+ GPIO_ODR(gpioport) = GPIO_IDR(gpioport) ^ gpios;
+}
+
+u16 gpio_port_read(u32 gpioport)
+{
+ return (u16)GPIO_IDR(gpioport);
+}
+
+void gpio_port_write(u32 gpioport, u16 data)
+{
+ GPIO_ODR(gpioport) = data;
+}
+
+void gpio_port_config_lock(u32 gpioport, u16 gpios)
+{
+ u32 reg32;
+
+ /* Special "Lock Key Writing Sequence", see datasheet. */
+ GPIO_LCKR(gpioport) = GPIO_LCKK | gpios; /* Set LCKK. */
+ GPIO_LCKR(gpioport) = ~GPIO_LCKK & gpios; /* Clear LCKK. */
+ GPIO_LCKR(gpioport) = GPIO_LCKK | gpios; /* Set LCKK. */
+ reg32 = GPIO_LCKR(gpioport); /* Read LCKK. */
+ reg32 = GPIO_LCKR(gpioport); /* Read LCKK again. */
+
+ /* If (reg32 & GPIO_LCKK) is true, the lock is now active. */
+}
diff --git a/lib/stm32/f4/libopencm3_stm32f4.ld b/lib/stm32/f4/libopencm3_stm32f4.ld
new file mode 100644
index 0000000..fda7d02
--- /dev/null
+++ b/lib/stm32/f4/libopencm3_stm32f4.ld
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Generic linker script for STM32 targets using libopencm3. */
+
+/* Memory regions must be defined in the ld script which includes this one. */
+
+/* Enforce emmition of the vector table. */
+EXTERN (vector_table)
+
+/* Define sections. */
+SECTIONS
+{
+ . = ORIGIN(rom);
+
+ .text : {
+ *(.vectors) /* Vector table */
+ *(.text*) /* Program code */
+ *(.rodata*) /* Read-only data */
+ _etext = .;
+ } >rom
+
+ . = ORIGIN(ram);
+
+ .data : {
+ _data = .;
+ *(.data*) /* Read-write initialized data */
+ _edata = .;
+ } >ram AT >rom
+
+ .bss : {
+ *(.bss*) /* Read-write zero initialized data */
+ *(COMMON)
+ _ebss = .;
+ } >ram AT >rom
+
+ /*
+ * The .eh_frame section appears to be used for C++ exception handling.
+ * You may need to fix this if you're using C++.
+ */
+ /DISCARD/ : { *(.eh_frame) }
+
+ end = .;
+}
+
+PROVIDE(_stack = 0x20000800);
+
diff --git a/lib/stm32/f4/pwr.c b/lib/stm32/f4/pwr.c
new file mode 100644
index 0000000..c7cdd6a
--- /dev/null
+++ b/lib/stm32/f4/pwr.c
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/f4/pwr.h>
+
+void pwr_set_vos_scale(vos_scale_t scale)
+{
+ if (scale == SCALE1)
+ PWR_CR |= PWR_CR_VOS;
+ else if (scale == SCALE2)
+ PWR_CR &= PWR_CR_VOS;
+}
diff --git a/lib/stm32/f4/rcc.c b/lib/stm32/f4/rcc.c
new file mode 100644
index 0000000..1a874c0
--- /dev/null
+++ b/lib/stm32/f4/rcc.c
@@ -0,0 +1,434 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Federico Ruiz-Ugalde <memeruiz at gmail dot com>
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/f4/rcc.h>
+#include <libopencm3/stm32/f4/pwr.h>
+#include <libopencm3/stm32/f4/flash.h>
+
+/* Set the default ppre1 and ppre2 peripheral clock frequencies after reset */
+u32 rcc_ppre1_frequency = 16000000;
+u32 rcc_ppre2_frequency = 16000000;
+
+const clock_scale_t hse_8mhz_3v3[CLOCK_3V3_END] =
+{
+ { /* 120MHz */
+ .pllm = 8,
+ .plln = 240,
+ .pllp = 2,
+ .pllq = 5,
+ .hpre = RCC_CFGR_HPRE_DIV_NONE,
+ .ppre1 = RCC_CFGR_HPRE_DIV_4,
+ .ppre2 = RCC_CFGR_HPRE_DIV_2,
+ .flash_config = FLASH_ICE | FLASH_DCE | FLASH_LATENCY_3WS,
+ .apb1_frequency = 30000000,
+ .apb2_frequency = 60000000,
+ },
+ { /* 168MHz */
+ .pllm = 8,
+ .plln = 336,
+ .pllp = 2,
+ .pllq = 7,
+ .hpre = RCC_CFGR_HPRE_DIV_NONE,
+ .ppre1 = RCC_CFGR_HPRE_DIV_4,
+ .ppre2 = RCC_CFGR_HPRE_DIV_2,
+ .flash_config = FLASH_ICE | FLASH_DCE | FLASH_LATENCY_5WS,
+ .apb1_frequency = 30000000,
+ .apb2_frequency = 60000000,
+ },
+};
+
+void rcc_osc_ready_int_clear(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ RCC_CIR |= RCC_CIR_PLLRDYC;
+ break;
+ case HSE:
+ RCC_CIR |= RCC_CIR_HSERDYC;
+ break;
+ case HSI:
+ RCC_CIR |= RCC_CIR_HSIRDYC;
+ break;
+ case LSE:
+ RCC_CIR |= RCC_CIR_LSERDYC;
+ break;
+ case LSI:
+ RCC_CIR |= RCC_CIR_LSIRDYC;
+ break;
+ }
+}
+
+void rcc_osc_ready_int_enable(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ RCC_CIR |= RCC_CIR_PLLRDYIE;
+ break;
+ case HSE:
+ RCC_CIR |= RCC_CIR_HSERDYIE;
+ break;
+ case HSI:
+ RCC_CIR |= RCC_CIR_HSIRDYIE;
+ break;
+ case LSE:
+ RCC_CIR |= RCC_CIR_LSERDYIE;
+ break;
+ case LSI:
+ RCC_CIR |= RCC_CIR_LSIRDYIE;
+ break;
+ }
+}
+
+void rcc_osc_ready_int_disable(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ RCC_CIR &= ~RCC_CIR_PLLRDYIE;
+ break;
+ case HSE:
+ RCC_CIR &= ~RCC_CIR_HSERDYIE;
+ break;
+ case HSI:
+ RCC_CIR &= ~RCC_CIR_HSIRDYIE;
+ break;
+ case LSE:
+ RCC_CIR &= ~RCC_CIR_LSERDYIE;
+ break;
+ case LSI:
+ RCC_CIR &= ~RCC_CIR_LSIRDYIE;
+ break;
+ }
+}
+
+int rcc_osc_ready_int_flag(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ return ((RCC_CIR & RCC_CIR_PLLRDYF) != 0);
+ break;
+ case HSE:
+ return ((RCC_CIR & RCC_CIR_HSERDYF) != 0);
+ break;
+ case HSI:
+ return ((RCC_CIR & RCC_CIR_HSIRDYF) != 0);
+ break;
+ case LSE:
+ return ((RCC_CIR & RCC_CIR_LSERDYF) != 0);
+ break;
+ case LSI:
+ return ((RCC_CIR & RCC_CIR_LSIRDYF) != 0);
+ break;
+ }
+
+ /* Shouldn't be reached. */
+ return -1;
+}
+
+void rcc_css_int_clear(void)
+{
+ RCC_CIR |= RCC_CIR_CSSC;
+}
+
+int rcc_css_int_flag(void)
+{
+ return ((RCC_CIR & RCC_CIR_CSSF) != 0);
+}
+
+void rcc_wait_for_osc_ready(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ while ((RCC_CR & RCC_CR_PLLRDY) == 0);
+ break;
+ case HSE:
+ while ((RCC_CR & RCC_CR_HSERDY) == 0);
+ break;
+ case HSI:
+ while ((RCC_CR & RCC_CR_HSIRDY) == 0);
+ break;
+ case LSE:
+ while ((RCC_BDCR & RCC_BDCR_LSERDY) == 0);
+ break;
+ case LSI:
+ while ((RCC_CSR & RCC_CSR_LSIRDY) == 0);
+ break;
+ }
+}
+
+void rcc_wait_for_sysclk_status(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != RCC_CFGR_SWS_PLL);
+ break;
+ case HSE:
+ while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != RCC_CFGR_SWS_HSE);
+ break;
+ case HSI:
+ while ((RCC_CFGR & ((1 << 1) | (1 << 0))) != RCC_CFGR_SWS_HSI);
+ break;
+ default:
+ /* Shouldn't be reached. */
+ break;
+ }
+}
+
+void rcc_osc_on(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ RCC_CR |= RCC_CR_PLLON;
+ break;
+ case HSE:
+ RCC_CR |= RCC_CR_HSEON;
+ break;
+ case HSI:
+ RCC_CR |= RCC_CR_HSION;
+ break;
+ case LSE:
+ RCC_BDCR |= RCC_BDCR_LSEON;
+ break;
+ case LSI:
+ RCC_CSR |= RCC_CSR_LSION;
+ break;
+ }
+}
+
+void rcc_osc_off(osc_t osc)
+{
+ switch (osc) {
+ case PLL:
+ RCC_CR &= ~RCC_CR_PLLON;
+ break;
+ case HSE:
+ RCC_CR &= ~RCC_CR_HSEON;
+ break;
+ case HSI:
+ RCC_CR &= ~RCC_CR_HSION;
+ break;
+ case LSE:
+ RCC_BDCR &= ~RCC_BDCR_LSEON;
+ break;
+ case LSI:
+ RCC_CSR &= ~RCC_CSR_LSION;
+ break;
+ }
+}
+
+void rcc_css_enable(void)
+{
+ RCC_CR |= RCC_CR_CSSON;
+}
+
+void rcc_css_disable(void)
+{
+ RCC_CR &= ~RCC_CR_CSSON;
+}
+
+void rcc_osc_bypass_enable(osc_t osc)
+{
+ switch (osc) {
+ case HSE:
+ RCC_CR |= RCC_CR_HSEBYP;
+ break;
+ case LSE:
+ RCC_BDCR |= RCC_BDCR_LSEBYP;
+ break;
+ case PLL:
+ case HSI:
+ case LSI:
+ /* Do nothing, only HSE/LSE allowed here. */
+ break;
+ }
+}
+
+void rcc_osc_bypass_disable(osc_t osc)
+{
+ switch (osc) {
+ case HSE:
+ RCC_CR &= ~RCC_CR_HSEBYP;
+ break;
+ case LSE:
+ RCC_BDCR &= ~RCC_BDCR_LSEBYP;
+ break;
+ case PLL:
+ case HSI:
+ case LSI:
+ /* Do nothing, only HSE/LSE allowed here. */
+ break;
+ }
+}
+
+void rcc_peripheral_enable_clock(volatile u32 *reg, u32 en)
+{
+ *reg |= en;
+}
+
+void rcc_peripheral_disable_clock(volatile u32 *reg, u32 en)
+{
+ *reg &= ~en;
+}
+
+void rcc_peripheral_reset(volatile u32 *reg, u32 reset)
+{
+ *reg |= reset;
+}
+
+void rcc_peripheral_clear_reset(volatile u32 *reg, u32 clear_reset)
+{
+ *reg &= ~clear_reset;
+}
+
+void rcc_set_sysclk_source(u32 clk)
+{
+ u32 reg32;
+
+ reg32 = RCC_CFGR;
+ reg32 &= ~((1 << 1) | (1 << 0));
+ RCC_CFGR = (reg32 | clk);
+}
+
+void rcc_set_pll_source(u32 pllsrc)
+{
+ u32 reg32;
+
+ reg32 = RCC_PLLCFGR;
+ reg32 &= ~(1 << 22);
+ RCC_PLLCFGR = (reg32 | (pllsrc << 22));
+}
+
+void rcc_set_ppre2(u32 ppre2)
+{
+ u32 reg32;
+
+ reg32 = RCC_CFGR;
+ reg32 &= ~((1 << 11) | (1 << 12) | (1 << 13));
+ RCC_CFGR = (reg32 | (ppre2 << 11));
+}
+
+void rcc_set_ppre1(u32 ppre1)
+{
+ u32 reg32;
+
+ reg32 = RCC_CFGR;
+ reg32 &= ~((1 << 8) | (1 << 9) | (1 << 10));
+ RCC_CFGR = (reg32 | (ppre1 << 8));
+}
+
+void rcc_set_hpre(u32 hpre)
+{
+ u32 reg32;
+
+ reg32 = RCC_CFGR;
+ reg32 &= ~((1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
+ RCC_CFGR = (reg32 | (hpre << 4));
+}
+
+void rcc_set_rtcpre(u32 rtcpre)
+{
+ u32 reg32;
+
+ reg32 = RCC_CFGR;
+ reg32 &= ~((1 << 16) | (1 << 17) | (1 << 18) | (1 << 19) | (1 << 20));
+ RCC_CFGR = (reg32 | (rtcpre << 16));
+}
+
+void rcc_set_main_pll_hsi(u32 pllm, u32 plln, u32 pllp, u32 pllq)
+{
+ RCC_PLLCFGR = (pllm << RCC_PLLCFGR_PLLM_SHIFT) |
+ (plln << RCC_PLLCFGR_PLLN_SHIFT) |
+ (((pllp >> 1) - 1) << RCC_PLLCFGR_PLLP_SHIFT) |
+ (pllq << RCC_PLLCFGR_PLLQ_SHIFT);
+}
+
+void rcc_set_main_pll_hse(u32 pllm, u32 plln, u32 pllp, u32 pllq)
+{
+ RCC_PLLCFGR = (pllm << RCC_PLLCFGR_PLLM_SHIFT) |
+ (plln << RCC_PLLCFGR_PLLN_SHIFT) |
+ (((pllp >> 1) - 1) << RCC_PLLCFGR_PLLP_SHIFT) |
+ RCC_PLLCFGR_PLLSRC |
+ (pllq << RCC_PLLCFGR_PLLQ_SHIFT);
+}
+
+u32 rcc_system_clock_source(void)
+{
+ /* Return the clock source which is used as system clock. */
+ return ((RCC_CFGR & 0x000c) >> 2);
+}
+
+void rcc_clock_setup_hse_3v3(const clock_scale_t *clock)
+{
+ /* Enable internal high-speed oscillator. */
+ rcc_osc_on(HSI);
+ rcc_wait_for_osc_ready(HSI);
+
+ /* Select HSI as SYSCLK source. */
+ rcc_set_sysclk_source(RCC_CFGR_SW_HSI);
+
+ /* Enable external high-speed oscillator 8MHz. */
+ rcc_osc_on(HSE);
+ rcc_wait_for_osc_ready(HSE);
+
+ /* Enable/disable high performance mode */
+ if (!clock->power_save)
+ pwr_set_vos_scale(SCALE1);
+ else
+ pwr_set_vos_scale(SCALE2);
+
+ /*
+ * Set prescalers for AHB, ADC, ABP1, ABP2.
+ * Do this before touching the PLL (TODO: why?).
+ */
+ rcc_set_hpre(clock->hpre);
+ rcc_set_ppre1(clock->ppre1);
+ rcc_set_ppre2(clock->ppre2);
+
+ rcc_set_main_pll_hse(clock->pllm,
+ clock->plln,
+ clock->pllp,
+ clock->pllq);
+
+ /* Enable PLL oscillator and wait for it to stabilize. */
+ rcc_osc_on(PLL);
+ rcc_wait_for_osc_ready(PLL);
+
+ /* Configure flash settings */
+ flash_set_ws(clock->flash_config);
+
+ /* Select PLL as SYSCLK source. */
+ rcc_set_sysclk_source(RCC_CFGR_SW_PLL);
+
+ /* Wait for PLL clock to be selected. */
+ rcc_wait_for_sysclk_status(PLL);
+
+ /* Set the peripheral clock frequencies used */
+ rcc_ppre1_frequency = clock->apb1_frequency;
+ rcc_ppre2_frequency = clock->apb2_frequency;
+}
+
+void rcc_backupdomain_reset(void)
+{
+ /* Set the backup domain software reset. */
+ RCC_BDCR |= RCC_BDCR_BDRST;
+
+ /* Clear the backup domain software reset. */
+ RCC_BDCR &= ~RCC_BDCR_BDRST;
+}
diff --git a/lib/stm32/f4/scb.c b/lib/stm32/f4/scb.c
new file mode 100644
index 0000000..18c1337
--- /dev/null
+++ b/lib/stm32/f4/scb.c
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/f4/scb.h>
+
+void scb_reset_core(void)
+{
+ SCB_AIRCR = SCB_AIRCR_VECTKEY | SCB_AIRCR_VECTRESET;
+}
+
+void scb_reset_system(void)
+{
+ SCB_AIRCR = SCB_AIRCR_VECTKEY | SCB_AIRCR_SYSRESETREQ;
+}
diff --git a/lib/stm32/f4/vector.c b/lib/stm32/f4/vector.c
new file mode 100644
index 0000000..d6f70f8
--- /dev/null
+++ b/lib/stm32/f4/vector.c
@@ -0,0 +1,336 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ * Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define WEAK __attribute__ ((weak))
+
+/* Symbols exported by linker script */
+extern unsigned _etext, _data, _edata, _ebss, _stack;
+
+void main(void);
+void reset_handler(void);
+void blocking_handler(void);
+void null_handler(void);
+
+void WEAK reset_handler(void);
+void WEAK nmi_handler(void);
+void WEAK hard_fault_handler(void);
+void WEAK mem_manage_handler(void);
+void WEAK bus_fault_handler(void);
+void WEAK usage_fault_handler(void);
+void WEAK sv_call_handler(void);
+void WEAK debug_monitor_handler(void);
+void WEAK pend_sv_handler(void);
+void WEAK sys_tick_handler(void);
+void WEAK wwdg_isr(void);
+void WEAK pvd_isr(void);
+void WEAK tamp_stamp_isr(void);
+void WEAK rtc_wkup_isr(void);
+void WEAK flash_isr(void);
+void WEAK rcc_isr(void);
+void WEAK exti0_isr(void);
+void WEAK exti1_isr(void);
+void WEAK exti2_isr(void);
+void WEAK exti3_isr(void);
+void WEAK exti4_isr(void);
+void WEAK dma1_stream0_isr(void);
+void WEAK dma1_stream1_isr(void);
+void WEAK dma1_stream2_isr(void);
+void WEAK dma1_stream3_isr(void);
+void WEAK dma1_stream4_isr(void);
+void WEAK dma1_stream5_isr(void);
+void WEAK dma1_stream6_isr(void);
+void WEAK adc_isr(void);
+void WEAK can1_tx_isr(void);
+void WEAK can1_rx0_isr(void);
+void WEAK can1_rx1_isr(void);
+void WEAK can1_sce_isr(void);
+void WEAK exti9_5_isr(void);
+void WEAK tim1_brk_tim9_isr(void);
+void WEAK tim1_up_tim10_isr(void);
+void WEAK tim1_trg_com_tim11_isr(void);
+void WEAK tim1_cc_isr(void);
+void WEAK tim2_isr(void);
+void WEAK tim3_isr(void);
+void WEAK tim4_isr(void);
+void WEAK i2c1_ev_isr(void);
+void WEAK i2c1_er_isr(void);
+void WEAK i2c2_ev_isr(void);
+void WEAK i2c2_er_isr(void);
+void WEAK spi1_isr(void);
+void WEAK spi2_isr(void);
+void WEAK usart1_isr(void);
+void WEAK usart2_isr(void);
+void WEAK usart3_isr(void);
+void WEAK exti15_10_isr(void);
+void WEAK rtc_alarm_isr(void);
+void WEAK usb_fs_wkup_isr(void);
+void WEAK tim8_brk_tim12_isr(void);
+void WEAK tim8_up_tim13_isr(void);
+void WEAK tim8_trg_com_tim14_isr(void);
+void WEAK tim8_cc_isr(void);
+void WEAK dma1_stream7_isr(void);
+void WEAK fsmc_isr(void);
+void WEAK sdio_isr(void);
+void WEAK tim5_isr(void);
+void WEAK spi3_isr(void);
+void WEAK usart4_isr(void);
+void WEAK usart5_isr(void);
+void WEAK tim6_dac_isr(void);
+void WEAK tim7_isr(void);
+void WEAK dma2_stream0_isr(void);
+void WEAK dma2_stream1_isr(void);
+void WEAK dma2_stream2_isr(void);
+void WEAK dma2_stream3_isr(void);
+void WEAK dma2_stream4_isr(void);
+void WEAK eth_isr(void);
+void WEAK eth_wkup_isr(void);
+void WEAK can2_tx_isr(void);
+void WEAK can2_rx0_isr(void);
+void WEAK can2_rx1_isr(void);
+void WEAK can2_sce_isr(void);
+void WEAK otg_fs_isr(void);
+void WEAK dma2_stream5_isr(void);
+void WEAK dma2_stream6_isr(void);
+void WEAK dma2_stream7_isr(void);
+void WEAK usart6_isr(void);
+void WEAK i2c3_ev_isr(void);
+void WEAK i2c3_er_isr(void);
+void WEAK otg_hs_ep1_out_isr(void);
+void WEAK otg_hs_ep1_in_isr(void);
+void WEAK otg_hs_wkup_isr(void);
+void WEAK otg_hs_isr(void);
+void WEAK dcmi_isr(void);
+void WEAK cryp_isr(void);
+void WEAK hash_rng_isr(void);
+
+__attribute__ ((section(".vectors")))
+void (*const vector_table[]) (void) = {
+ (void*)&_stack,
+ reset_handler,
+ nmi_handler,
+ hard_fault_handler,
+ mem_manage_handler,
+ bus_fault_handler,
+ usage_fault_handler,
+ 0, 0, 0, 0, /* Reserved */
+ sv_call_handler,
+ debug_monitor_handler,
+ 0, /* Reserved */
+ pend_sv_handler,
+ sys_tick_handler,
+ wwdg_isr,
+ pvd_isr,
+ tamp_stamp_isr,
+ rtc_wkup_isr,
+ flash_isr,
+ rcc_isr,
+ exti0_isr,
+ exti1_isr,
+ exti2_isr,
+ exti3_isr,
+ exti4_isr,
+ dma1_stream0_isr,
+ dma1_stream1_isr,
+ dma1_stream2_isr,
+ dma1_stream3_isr,
+ dma1_stream4_isr,
+ dma1_stream5_isr,
+ dma1_stream6_isr,
+ adc_isr,
+ can1_tx_isr,
+ can1_rx0_isr,
+ can1_rx1_isr,
+ can1_sce_isr,
+ exti9_5_isr,
+ tim1_brk_tim9_isr,
+ tim1_up_tim10_isr,
+ tim1_trg_com_tim11_isr,
+ tim1_cc_isr,
+ tim2_isr,
+ tim3_isr,
+ tim4_isr,
+ i2c1_ev_isr,
+ i2c1_er_isr,
+ i2c2_ev_isr,
+ i2c2_er_isr,
+ spi1_isr,
+ spi2_isr,
+ usart1_isr,
+ usart2_isr,
+ usart3_isr,
+ exti15_10_isr,
+ rtc_alarm_isr,
+ usb_fs_wkup_isr,
+ tim8_brk_tim12_isr,
+ tim8_up_tim13_isr,
+ tim8_trg_com_tim14_isr,
+ tim8_cc_isr,
+ dma1_stream7_isr,
+ fsmc_isr,
+ sdio_isr,
+ tim5_isr,
+ spi3_isr,
+ usart4_isr,
+ usart5_isr,
+ tim6_dac_isr,
+ tim7_isr,
+ dma2_stream0_isr,
+ dma2_stream1_isr,
+ dma2_stream2_isr,
+ dma2_stream3_isr,
+ dma2_stream4_isr,
+ eth_isr,
+ eth_wkup_isr,
+ can2_tx_isr,
+ can2_rx0_isr,
+ can2_rx1_isr,
+ can2_sce_isr,
+ otg_fs_isr,
+ dma2_stream5_isr,
+ dma2_stream6_isr,
+ dma2_stream7_isr,
+ usart6_isr,
+ i2c3_ev_isr,
+ i2c3_er_isr,
+ otg_hs_ep1_out_isr,
+ otg_hs_ep1_in_isr,
+ otg_hs_wkup_isr,
+ otg_hs_isr,
+ dcmi_isr,
+ cryp_isr,
+ hash_rng_isr,
+};
+
+void reset_handler(void)
+{
+ volatile unsigned *src, *dest;
+ asm("MSR msp, %0" : : "r"(&_stack));
+
+ for (src = &_etext, dest = &_data; dest < &_edata; src++, dest++)
+ *dest = *src;
+
+ while (dest < &_ebss)
+ *dest++ = 0;
+
+ /* Call the application's entry point. */
+ main();
+}
+
+void blocking_handler(void)
+{
+ while (1) ;
+}
+
+void null_handler(void)
+{
+ /* Do nothing. */
+}
+
+#pragma weak nmi_handler = null_handler
+#pragma weak hard_fault_handler = blocking_handler
+#pragma weak mem_manage_handler = blocking_handler
+#pragma weak bus_fault_handler = blocking_handler
+#pragma weak usage_fault_handler = blocking_handler
+#pragma weak sv_call_handler = null_handler
+#pragma weak debug_monitor_handler = null_handler
+#pragma weak pend_sv_handler = null_handler
+#pragma weak sys_tick_handler = null_handler
+#pragma weak wwdg_isr = null_handler
+#pragma weak pvd_isr = null_handler
+#pragma weak tamp_stamp_isr = null_handler
+#pragma weak rtc_wkup_isr = null_handler
+#pragma weak flash_isr = null_handler
+#pragma weak rcc_isr = null_handler
+#pragma weak exti0_isr = null_handler
+#pragma weak exti1_isr = null_handler
+#pragma weak exti2_isr = null_handler
+#pragma weak exti3_isr = null_handler
+#pragma weak exti4_isr = null_handler
+#pragma weak dma1_stream0_isr = null_handler
+#pragma weak dma1_stream1_isr = null_handler
+#pragma weak dma1_stream2_isr = null_handler
+#pragma weak dma1_stream3_isr = null_handler
+#pragma weak dma1_stream4_isr = null_handler
+#pragma weak dma1_stream5_isr = null_handler
+#pragma weak dma1_stream6_isr = null_handler
+#pragma weak adc_isr = null_handler
+#pragma weak can1_tx_isr = null_handler
+#pragma weak can1_rx0_isr = null_handler
+#pragma weak can1_rx1_isr = null_handler
+#pragma weak can1_sce_isr = null_handler
+#pragma weak exti9_5_isr = null_handler
+#pragma weak tim1_brk_tim9_isr = null_handler
+#pragma weak tim1_up_tim10_isr = null_handler
+#pragma weak tim1_trg_com_tim11_isr = null_handler
+#pragma weak tim1_cc_isr = null_handler
+#pragma weak tim2_isr = null_handler
+#pragma weak tim3_isr = null_handler
+#pragma weak tim4_isr = null_handler
+#pragma weak i2c1_ev_isr = null_handler
+#pragma weak i2c1_er_isr = null_handler
+#pragma weak i2c2_ev_isr = null_handler
+#pragma weak i2c2_er_isr = null_handler
+#pragma weak spi1_isr = null_handler
+#pragma weak spi2_isr = null_handler
+#pragma weak usart1_isr = null_handler
+#pragma weak usart2_isr = null_handler
+#pragma weak usart3_isr = null_handler
+#pragma weak exti15_10_isr = null_handler
+#pragma weak rtc_alarm_isr = null_handler
+#pragma weak usb_fs_wkup_isr = null_handler
+#pragma weak tim8_brk_tim12_isr = null_handler
+#pragma weak tim8_up_tim13_isr = null_handler
+#pragma weak tim8_trg_com_tim14_isr = null_handler
+#pragma weak tim8_cc_isr = null_handler
+#pragma weak dma1_stream7_isr = null_handler
+#pragma weak fsmc_isr = null_handler
+#pragma weak sdio_isr = null_handler
+#pragma weak tim5_isr = null_handler
+#pragma weak spi3_isr = null_handler
+#pragma weak usart4_isr = null_handler
+#pragma weak usart5_isr = null_handler
+#pragma weak tim6_dac_isr = null_handler
+#pragma weak tim7_isr = null_handler
+#pragma weak dma2_stream0_isr = null_handler
+#pragma weak dma2_stream1_isr = null_handler
+#pragma weak dma2_stream2_isr = null_handler
+#pragma weak dma2_stream3_isr = null_handler
+#pragma weak dma2_stream4_isr = null_handler
+#pragma weak eth_isr = null_handler
+#pragma weak eth_wkup_isr = null_handler
+#pragma weak can2_tx_isr = null_handler
+#pragma weak can2_rx0_isr = null_handler
+#pragma weak can2_rx1_isr = null_handler
+#pragma weak can2_sce_isr = null_handler
+#pragma weak otg_fs_isr = null_handler
+#pragma weak dma2_stream5_isr = null_handler
+#pragma weak dma2_stream6_isr = null_handler
+#pragma weak dma2_stream7_isr = null_handler
+#pragma weak usart6_isr = null_handler
+#pragma weak i2c3_ev_isr = null_handler
+#pragma weak i2c3_er_isr = null_handler
+#pragma weak otg_hs_ep1_out_isr = null_handler
+#pragma weak otg_hs_ep1_in_isr = null_handler
+#pragma weak otg_hs_wkup_isr = null_handler
+#pragma weak otg_hs_isr = null_handler
+#pragma weak dcmi_isr = null_handler
+#pragma weak cryp_isr = null_handler
+#pragma weak hash_rng_isr = null_handler
+