pa5 blink
This commit is contained in:
kraus
parent
3d2801292b
commit
2e47ff05e7
|
|
@ -0,0 +1,148 @@
|
|||
#
|
||||
# Generic and Simple GNU ARM Makefile
|
||||
#
|
||||
# Desinged for the gnu-arm-none-eabi tool chain
|
||||
#
|
||||
# Features
|
||||
# - create hex file
|
||||
# - create assembler listing (.dis)
|
||||
#
|
||||
# Limitations
|
||||
# - only C-files supported
|
||||
# - no automatic dependency checking (call 'make clean' if any .h files are changed)
|
||||
#
|
||||
# Targets:
|
||||
# make
|
||||
# create hex file, no upload
|
||||
# make upload
|
||||
# create and upload hex file
|
||||
# make clean
|
||||
# delete all generated files
|
||||
#
|
||||
# Note:
|
||||
# Display list make database: make -p -f/dev/null | less
|
||||
#
|
||||
#================================================
|
||||
# External tools
|
||||
|
||||
# The base directory of gcc-arm-none-eabi
|
||||
# Can be empty on Ubuntu and installed gcc-arm-none-eabi
|
||||
# If set, GCCBINPATH must contain a "/" at the end.
|
||||
GCCBINPATH:=/usr/bin/
|
||||
|
||||
#================================================
|
||||
# Project Information
|
||||
|
||||
# The name for the project
|
||||
TARGETNAME:=blink
|
||||
|
||||
# The source files of the project
|
||||
CSRC:=$(wildcard *.c)
|
||||
SSRC:=$(wildcard ../stm32l0xx/src/*.s)
|
||||
|
||||
# The CPU architecture (will be used for -mcpu)
|
||||
# for the LPC824, can we use "cortex-m0plus"?
|
||||
MCPU:=cortex-m0plus
|
||||
|
||||
# Include directory for the system include files
|
||||
SYSINC:=../stm32l0xx/inc
|
||||
SYSSRC:=$(wildcard ../stm32l0xx/src/*.c)
|
||||
|
||||
# Include directory for the u8g2 include files
|
||||
#U8G2INC:=../../../../csrc/
|
||||
#U8G2SRC:=$(wildcard ../../../../csrc/*.c)
|
||||
|
||||
# directory for FatFS
|
||||
#FFINC:=../fatfs
|
||||
#FFSRC:=$(wildcard ../fatfs/*.c)
|
||||
|
||||
# Directory for the linker script
|
||||
LDSCRIPTDIR:=.
|
||||
# Name of the linker script (must be the "keep" script, because the other script is not always working)
|
||||
LDSCRIPT:=stm32l031x6.ld
|
||||
|
||||
#================================================
|
||||
# Main part of the Makefile starts here. Usually no changes are needed.
|
||||
|
||||
# Internal Variable Names
|
||||
LIBNAME:=$(TARGETNAME).a
|
||||
ELFNAME:=$(TARGETNAME).elf
|
||||
HEXNAME:=$(TARGETNAME).hex
|
||||
DISNAME:=$(TARGETNAME).dis
|
||||
MAPNAME:=$(TARGETNAME).map
|
||||
OBJ:=$(CSRC:.c=.o) $(SSRC:.s=.o) $(SYSSRC:.c=.o)
|
||||
# $(SYSSRC:.c=.o) $(U8G2SRC:.c=.o) $(FFSRC:.c=.o)
|
||||
|
||||
# Replace standard build tools by arm tools
|
||||
AS:=$(GCCBINPATH)arm-none-eabi-as
|
||||
CC:=$(GCCBINPATH)arm-none-eabi-gcc
|
||||
AR:=$(GCCBINPATH)arm-none-eabi-ar
|
||||
OBJCOPY:=$(GCCBINPATH)arm-none-eabi-objcopy
|
||||
OBJDUMP:=$(GCCBINPATH)arm-none-eabi-objdump
|
||||
SIZE:=$(GCCBINPATH)arm-none-eabi-size
|
||||
|
||||
# Common flags
|
||||
COMMON_FLAGS = -mthumb -mcpu=$(MCPU) -g
|
||||
COMMON_FLAGS += -DSTM32L031xx
|
||||
COMMON_FLAGS += -Wall -I. -I$(SYSINC) -I$(U8G2INC)
|
||||
# define stack size (defaults to 0x0100)
|
||||
# COMMON_FLAGS += -D__STACK_SIZE=0x0100
|
||||
# COMMON_FLAGS += -Os -flto
|
||||
COMMON_FLAGS += -Os
|
||||
# COMMON_FLAGS += -fstack-protector
|
||||
# COMMON_FLAGS += -finstrument-functions
|
||||
# Do not use stand libs startup code. Uncomment this for gcclib procedures
|
||||
# memcpy still works, but might be required for __aeabi_uidiv
|
||||
# COMMON_FLAGS += -nostdlib
|
||||
# remove unused data and function
|
||||
#COMMON_FLAGS += -ffunction-sections -fdata-sections -fshort-wchar
|
||||
COMMON_FLAGS += -ffunction-sections -fdata-sections
|
||||
# C flags
|
||||
CFLAGS:=$(COMMON_FLAGS) -std=gnu99
|
||||
# LD flags
|
||||
# remove unreferenced procedures and variables, but __isr_vector
|
||||
GC:=-Wl,--gc-sections -Wl,--undefined=__isr_vector
|
||||
MAP:=-Wl,-Map=$(MAPNAME)
|
||||
LFLAGS:=$(COMMON_FLAGS) $(GC) $(MAP)
|
||||
#LDLIBS:=--specs=nosys.specs -lc -lc -lnosys -L$(LDSCRIPTDIR) -T $(LDSCRIPT)
|
||||
LDLIBS:=--specs=nosys.specs -L$(LDSCRIPTDIR) -T $(LDSCRIPT)
|
||||
|
||||
# Additional Suffixes
|
||||
.SUFFIXES: .elf .hex .bin .dis
|
||||
|
||||
# Targets
|
||||
.PHONY: all
|
||||
all: $(DISNAME) $(HEXNAME)
|
||||
$(SIZE) $(ELFNAME)
|
||||
|
||||
.PHONY: upload
|
||||
upload: $(DISNAME) $(HEXNAME) $(ELFNAME)
|
||||
stm32flash -e 255 -g 0 -w $(HEXNAME) -v /dev/ttyUSB0
|
||||
$(SIZE) $(ELFNAME)
|
||||
|
||||
.PHONY: clean
|
||||
clean:
|
||||
$(RM) $(OBJ) $(HEXNAME) $(ELFNAME) $(LIBNAME) $(DISNAME) $(MAPNAME) libssp.a libssp_nonshared.a
|
||||
|
||||
# implicit rules
|
||||
.elf.hex:
|
||||
$(OBJCOPY) -O ihex $< $@
|
||||
|
||||
|
||||
|
||||
# explicit rules
|
||||
|
||||
$(ELFNAME): $(LIBNAME)($(OBJ)) libssp.a libssp_nonshared.a
|
||||
$(LINK.o) $(LFLAGS) $(LIBNAME) $(LDLIBS) -o $@
|
||||
|
||||
$(DISNAME): $(ELFNAME)
|
||||
$(OBJDUMP) -D -S $< > $@
|
||||
|
||||
# create empty ssp libs for -fstack-protector-all -fstack-protector
|
||||
libssp.a:
|
||||
$(AR) rcs $@
|
||||
|
||||
libssp_nonshared.a:
|
||||
$(AR) rcs $@
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
/* LED blink project for the STM32L031 */
|
||||
|
||||
#include "stm32l031xx.h"
|
||||
|
||||
volatile unsigned long SysTickCount = 0;
|
||||
|
||||
void __attribute__ ((interrupt, used)) SysTick_Handler(void)
|
||||
{
|
||||
SysTickCount++;
|
||||
if ( SysTickCount & 1 )
|
||||
GPIOA->BSRR = GPIO_BSRR_BS_5; /* atomic set PA5 */
|
||||
else
|
||||
GPIOA->BSRR = GPIO_BSRR_BR_5; /* atomic clr PA5 */
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
RCC->IOPENR |= RCC_IOPENR_IOPAEN; /* Enable clock for GPIO Port A */
|
||||
__NOP();
|
||||
__NOP();
|
||||
GPIOA->MODER &= ~GPIO_MODER_MODE5; /* clear mode for PA13 */
|
||||
GPIOA->MODER |= GPIO_MODER_MODE5_0; /* Output mode for PA13 */
|
||||
GPIOA->OTYPER &= ~GPIO_OTYPER_OT_5; /* no Push/Pull for PA13 */
|
||||
GPIOA->OSPEEDR &= ~GPIO_OSPEEDER_OSPEED5; /* low speed for PA13 */
|
||||
GPIOA->PUPDR &= ~GPIO_PUPDR_PUPD5; /* no pullup/pulldown for PA13 */
|
||||
GPIOA->BSRR = GPIO_BSRR_BR_5; /* atomic clr PA13 */
|
||||
|
||||
SysTick->LOAD = 2000*500 - 1;
|
||||
SysTick->VAL = 0;
|
||||
SysTick->CTRL = 7; /* enable, generate interrupt (SysTick_Handler), do not divide by 2 */
|
||||
|
||||
for(;;)
|
||||
;
|
||||
}
|
||||
|
|
@ -0,0 +1,245 @@
|
|||
/*
|
||||
|
||||
stm32l031x6.ld
|
||||
|
||||
Modified for stm32l0 from the original nokeep.ld script from the
|
||||
arm-none-eabi examples by olikraus@gmail.com
|
||||
|
||||
Assuming, that the original nokeep.ld file is available under
|
||||
the GNU General Public License, this file is available under the
|
||||
same license.
|
||||
|
||||
There are three modifications:
|
||||
|
||||
1. Provide symbols for the stm32l0 startup code
|
||||
|
||||
The following symbols are required for the stm32l0 startup
|
||||
code (e.g. startup_stm32l031xx.s)
|
||||
|
||||
_sidata start address for the initialization values of the .data section
|
||||
_sdata start address for the .data section. defined in linker script
|
||||
_edata end address for the .data section. defined in linker script
|
||||
_sbss start address for the .bss section. defined in linker script
|
||||
_ebss end address for the .bss section. defined in linker script
|
||||
_estack top address of the stack
|
||||
|
||||
2. Stack size estimation / calculation
|
||||
|
||||
_Stack_Size has been added to allow better stack size calculation
|
||||
|
||||
3. KEEP keywords
|
||||
|
||||
Additionall KEEPs added for .init and .fini. Without this KEEP the
|
||||
generated code will not work, because of the missing _init function.
|
||||
|
||||
4. Bugfix: Allign the end of the flash area
|
||||
|
||||
*/
|
||||
|
||||
_Stack_Size = 0x400; /* stm32l0: estimated amount of stack */
|
||||
|
||||
|
||||
/* Linker script to configure memory regions.
|
||||
* Need modifying for a specific board.
|
||||
* FLASH.ORIGIN: starting address of flash
|
||||
* FLASH.LENGTH: length of flash
|
||||
* RAM.ORIGIN: starting address of RAM bank 0
|
||||
* RAM.LENGTH: length of RAM bank 0
|
||||
*/
|
||||
MEMORY
|
||||
{
|
||||
FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 32K
|
||||
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 8K
|
||||
}
|
||||
|
||||
/* Linker script to place sections and symbol values. Should be used together
|
||||
* with other linker script that defines memory regions FLASH and RAM.
|
||||
* It references following symbols, which must be defined in code:
|
||||
* Reset_Handler : Entry of reset handler
|
||||
*
|
||||
* It defines following symbols, which code can use without definition:
|
||||
* __exidx_start
|
||||
* __exidx_end
|
||||
* __copy_table_start__
|
||||
* __copy_table_end__
|
||||
* __zero_table_start__
|
||||
* __zero_table_end__
|
||||
* __etext
|
||||
* __data_start__
|
||||
* __preinit_array_start
|
||||
* __preinit_array_end
|
||||
* __init_array_start
|
||||
* __init_array_end
|
||||
* __fini_array_start
|
||||
* __fini_array_end
|
||||
* __data_end__
|
||||
* __bss_start__
|
||||
* __bss_end__
|
||||
* __end__
|
||||
* end
|
||||
* __HeapLimit
|
||||
* __StackLimit
|
||||
* __StackTop
|
||||
* __stack
|
||||
*/
|
||||
ENTRY(Reset_Handler)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.text :
|
||||
{
|
||||
KEEP(*(.isr_vector))
|
||||
*(.text*)
|
||||
|
||||
/* the st32l0 startup code calls __libc_init_array, which calls the _init */
|
||||
/* ... sooo.... better keep the init and fini sections */
|
||||
|
||||
KEEP ( *(.init) )
|
||||
KEEP ( *(.fini) )
|
||||
|
||||
/* .ctors */
|
||||
*crtbegin.o(.ctors)
|
||||
*crtbegin?.o(.ctors)
|
||||
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
|
||||
*(SORT(.ctors.*))
|
||||
*(.ctors)
|
||||
|
||||
/* .dtors */
|
||||
*crtbegin.o(.dtors)
|
||||
*crtbegin?.o(.dtors)
|
||||
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
|
||||
*(SORT(.dtors.*))
|
||||
*(.dtors)
|
||||
|
||||
*(.rodata*)
|
||||
|
||||
*(.eh_frame*)
|
||||
|
||||
/* allign the end of the flash area */
|
||||
. = ALIGN(4);
|
||||
} > FLASH
|
||||
|
||||
.ARM.extab :
|
||||
{
|
||||
*(.ARM.extab* .gnu.linkonce.armextab.*)
|
||||
} > FLASH
|
||||
|
||||
__exidx_start = .;
|
||||
.ARM.exidx :
|
||||
{
|
||||
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
|
||||
} > FLASH
|
||||
__exidx_end = .;
|
||||
|
||||
/* To copy multiple ROM to RAM sections,
|
||||
* uncomment .copy.table section and,
|
||||
* define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
|
||||
/*
|
||||
.copy.table :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
__copy_table_start__ = .;
|
||||
LONG (__etext)
|
||||
LONG (__data_start__)
|
||||
LONG (__data_end__ - __data_start__)
|
||||
LONG (__etext2)
|
||||
LONG (__data2_start__)
|
||||
LONG (__data2_end__ - __data2_start__)
|
||||
__copy_table_end__ = .;
|
||||
} > FLASH
|
||||
*/
|
||||
|
||||
/* To clear multiple BSS sections,
|
||||
* uncomment .zero.table section and,
|
||||
* define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
|
||||
/*
|
||||
.zero.table :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
__zero_table_start__ = .;
|
||||
LONG (__bss_start__)
|
||||
LONG (__bss_end__ - __bss_start__)
|
||||
LONG (__bss2_start__)
|
||||
LONG (__bss2_end__ - __bss2_start__)
|
||||
__zero_table_end__ = .;
|
||||
} > FLASH
|
||||
*/
|
||||
|
||||
__etext = .;
|
||||
_sidata = .; /* for stm32l0 startup code */
|
||||
|
||||
.data : AT (__etext)
|
||||
{
|
||||
__data_start__ = .;
|
||||
_sdata = .; /* for stm32l0 startup code */
|
||||
*(vtable)
|
||||
*(.data*)
|
||||
|
||||
. = ALIGN(4);
|
||||
/* preinit data */
|
||||
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||
*(.preinit_array)
|
||||
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||
|
||||
. = ALIGN(4);
|
||||
/* init data */
|
||||
PROVIDE_HIDDEN (__init_array_start = .);
|
||||
*(SORT(.init_array.*))
|
||||
*(.init_array)
|
||||
PROVIDE_HIDDEN (__init_array_end = .);
|
||||
|
||||
|
||||
. = ALIGN(4);
|
||||
/* finit data */
|
||||
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||
*(SORT(.fini_array.*))
|
||||
*(.fini_array)
|
||||
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||
|
||||
*(.jcr)
|
||||
. = ALIGN(4);
|
||||
/* All data end */
|
||||
__data_end__ = .;
|
||||
_edata = .; /* for stm32l0 startup code */
|
||||
|
||||
} > RAM
|
||||
|
||||
.bss :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
__bss_start__ = .;
|
||||
_sbss = .; /* for stm32l0 startup code */
|
||||
*(.bss*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
__bss_end__ = .;
|
||||
_ebss = .; /* for stm32l0 startup code */
|
||||
} > RAM
|
||||
|
||||
.heap (COPY):
|
||||
{
|
||||
__end__ = .;
|
||||
PROVIDE(end = .);
|
||||
*(.heap*)
|
||||
__HeapLimit = .;
|
||||
} > RAM
|
||||
|
||||
/* .stack_dummy section doesn't contains any symbols. It is only
|
||||
* used for linker to calculate size of stack sections, and assign
|
||||
* values to stack symbols later */
|
||||
.stack_dummy (COPY):
|
||||
{
|
||||
*(.stack*)
|
||||
. = . + _Stack_Size; /* estimated stack size */
|
||||
} > RAM
|
||||
|
||||
/* Set stack top to end of RAM, and stack limit move down by
|
||||
* size of stack_dummy section */
|
||||
__StackTop = ORIGIN(RAM) + LENGTH(RAM);
|
||||
_estack = __StackTop; /* for stm32l0 startup code */
|
||||
__StackLimit = __StackTop - SIZEOF(.stack_dummy);
|
||||
PROVIDE(__stack = __StackTop);
|
||||
|
||||
/* Check if data + heap + stack exceeds RAM limit */
|
||||
ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
|
||||
}
|
||||
Loading…
Reference in New Issue