plu
This commit is contained in:
kraus
parent
7376cb10da
commit
f024279871
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@ -0,0 +1,148 @@
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#
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# Generic and Simple GNU ARM Makefile
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||||
#
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# Desinged for the gnu-arm-none-eabi tool chain
|
||||
#
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||||
# Features
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||||
# - create hex file
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||||
# - create assembler listing (.dis)
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||||
#
|
||||
# Limitations
|
||||
# - only C-files supported
|
||||
# - no automatic dependency checking (call 'make clean' if any .h files are changed)
|
||||
#
|
||||
# Targets:
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||||
# make
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||||
# create hex file, no upload
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||||
# make upload
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||||
# create and upload hex file
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||||
# make clean
|
||||
# delete all generated files
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||||
#
|
||||
# Note:
|
||||
# Display list make database: make -p -f/dev/null | less
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||||
#
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||||
#================================================
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||||
# External tools
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||||
|
||||
# The base directory of gcc-arm-none-eabi
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# Can be empty on Ubuntu and installed gcc-arm-none-eabi
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||||
# If set, GCCBINPATH must contain a "/" at the end.
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GCCBINPATH:=/usr/bin/
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|
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#================================================
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||||
# Project Information
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||||
|
||||
# The name for the project
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TARGETNAME:=plu
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# The source files of the project
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SRC:=$(wildcard *.c)
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# The CPU architecture (will be used for -mcpu)
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# for the LPC804, can we use "cortex-m0plus" instead of "cortex-m0"?
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MCPU:=cortex-m0plus
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# Include directory for the system include files
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SYSINC:=../lpc_chip_804/inc
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SYSSRC:=$(wildcard ../lpc_chip_804/src/*.c)
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|
||||
# Include directory for the u8g2 include files
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#U8G2INC:=../../../../csrc/
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#U8G2SRC:=$(wildcard ../../../../csrc/*.c)
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|
||||
# directory for FatFS
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||||
#FFINC:=../fatfs
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||||
#FFSRC:=$(wildcard ../fatfs/*.c)
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|
||||
# Directory for the linker script
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LDSCRIPTDIR:=.
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# Name of the linker script (must be the "keep" script, because the other script is not always working)
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||||
LDSCRIPT:=lpc804.ld
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|
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#================================================
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||||
# Main part of the Makefile starts here. Usually no changes are needed.
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|
||||
# Internal Variable Names
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||||
LIBNAME:=$(TARGETNAME).a
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ELFNAME:=$(TARGETNAME).elf
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HEXNAME:=$(TARGETNAME).hex
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DISNAME:=$(TARGETNAME).dis
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MAPNAME:=$(TARGETNAME).map
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OBJ:=$(SRC:.c=.o) $(SYSSRC:.c=.o) $(U8G2SRC:.c=.o) $(FFSRC:.c=.o)
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|
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# Replace standard build tools by arm tools
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CC:=$(GCCBINPATH)arm-none-eabi-gcc
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AR:=$(GCCBINPATH)arm-none-eabi-ar
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OBJCOPY:=$(GCCBINPATH)arm-none-eabi-objcopy
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OBJDUMP:=$(GCCBINPATH)arm-none-eabi-objdump
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SIZE:=$(GCCBINPATH)arm-none-eabi-size
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|
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# Common flags
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COMMON_FLAGS = -mthumb -mcpu=$(MCPU)
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COMMON_FLAGS += -Wall -I. -I$(SYSINC) -I$(U8G2INC)
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# define stack size (defaults to 0x0100)
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# COMMON_FLAGS += -D__STACK_SIZE=0x0100
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|
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# COMMON_FLAGS += -Os -flto
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COMMON_FLAGS += -Os
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# COMMON_FLAGS += -fstack-protector
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# COMMON_FLAGS += -finstrument-functions
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# Do not use stand libs startup code. Uncomment this for gcclib procedures
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# memcpy still works, but might be required for __aeabi_uidiv
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# COMMON_FLAGS += -nostdlib
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# remove unused data and function
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COMMON_FLAGS += -ffunction-sections -fdata-sections
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# COMMON_FLAGS += -ffunction-sections -fdata-sections -fshort-wchar
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# C flags
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CFLAGS:=$(COMMON_FLAGS) -std=gnu99
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# LD flags
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||||
# remove unreferenced procedures and variables, but keep "arm_stack_area" and __isr_vector
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GC:=-Wl,--gc-sections -Wl,--undefined=arm_stack_area -Wl,--undefined=__isr_vector
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MAP:=-Wl,-Map=$(MAPNAME)
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LFLAGS:=$(COMMON_FLAGS) $(GC) $(MAP)
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#LDLIBS:=--specs=nano.specs -L$(LDSCRIPTDIR) -T $(LDSCRIPT)
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LDLIBS:=--specs=nosys.specs -L$(LDSCRIPTDIR) -T $(LDSCRIPT)
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|
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# Additional Suffixes
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.SUFFIXES: .elf .hex .bin .dis
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# Targets
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.PHONY: all
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all: plu.c $(DISNAME) $(HEXNAME)
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$(SIZE) $(ELFNAME)
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.PHONY: upload
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upload: $(DISNAME) $(HEXNAME) $(ELFNAME)
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$(SIZE) $(ELFNAME)
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|
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.PHONY: clean
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||||
clean:
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$(RM) $(OBJ) $(HEXNAME) $(ELFNAME) $(LIBNAME) $(DISNAME) $(MAPNAME) libssp.a libssp_nonshared.a
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|
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# implicit rules
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.elf.hex:
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$(OBJCOPY) -O ihex $< $@
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|
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|
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# explicit rules
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plu.c: Makefile
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./pluc 'PIO0_22 <= LVLSHFT_OUT0; LVLSHFT_IN0 <= PIO0_10;' 'PIO0_9 <= !PIO0_2 & !PIO0_22; ' -oc plu.c
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|
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$(ELFNAME): $(LIBNAME)($(OBJ)) libssp.a libssp_nonshared.a plu.c
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$(LINK.o) $(LFLAGS) $(LIBNAME) $(LDLIBS) -o $@
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|
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$(DISNAME): $(ELFNAME)
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$(OBJDUMP) -D -S $< > $@
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|
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|
||||
# create empty ssp libs for -fstack-protector-all -fstack-protector
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libssp.a:
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$(AR) rcs $@
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libssp_nonshared.a:
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$(AR) rcs $@
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@ -0,0 +1,129 @@
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/*
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delay.c
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|
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The delay function delay_micro_seconds() will use the global variable
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SystemCoreClock. A call to SystemCoreClockUpdate() is required before
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using delay_micro_seconds().
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|
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LPC804 Project
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Copyright (c) 2016, olikraus@gmail.com
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All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice, this list
|
||||
of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright notice, this
|
||||
list of conditions and the following disclaimer in the documentation and/or other
|
||||
materials provided with the distribution.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
|
||||
*/
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|
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#include <LPC8xx.h>
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/* Generic ARM delay procedure, based on the system timer (SysTick) */
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|
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/*
|
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Delay by the provided number of system ticks.
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The delay must be smaller than the RELOAD value.
|
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This delay has an imprecision of about +/- 20 system ticks.
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*/
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static void _delay_system_ticks_sub(uint32_t sys_ticks)
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{
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uint32_t start_val, end_val, curr_val;
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uint32_t load;
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start_val = SysTick->VAL;
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start_val &= 0x0ffffffUL;
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end_val = start_val;
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if ( end_val < sys_ticks )
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{
|
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/* check, if the operation after this if clause would lead to a negative result */
|
||||
/* if this would be the case, then add the reload value first */
|
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load = SysTick->LOAD;
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load &= 0x0ffffffUL;
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end_val += load;
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}
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/* counter goes towards zero, so end_val is below start value */
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end_val -= sys_ticks;
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/* wait until interval is left */
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if ( start_val >= end_val )
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{
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for(;;)
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{
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curr_val = SysTick->VAL;
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curr_val &= 0x0ffffffUL;
|
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if ( curr_val <= end_val )
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break;
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if ( curr_val > start_val )
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break;
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}
|
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}
|
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else
|
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{
|
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for(;;)
|
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{
|
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curr_val = SysTick->VAL;
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curr_val &= 0x0ffffffUL;
|
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if ( curr_val <= end_val && curr_val > start_val )
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break;
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}
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}
|
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}
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|
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/*
|
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Delay by the provided number of system ticks.
|
||||
Any values between 0 and 0x0ffffffff are allowed.
|
||||
*/
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void delay_system_ticks(uint32_t sys_ticks)
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{
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uint32_t load4;
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load4 = SysTick->LOAD;
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load4 &= 0x0ffffffUL;
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load4 >>= 2;
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||||
|
||||
while ( sys_ticks > load4 )
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||||
{
|
||||
sys_ticks -= load4;
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_delay_system_ticks_sub(load4);
|
||||
}
|
||||
_delay_system_ticks_sub(sys_ticks);
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||||
}
|
||||
|
||||
/*
|
||||
Delay by the provided number of micro seconds.
|
||||
Limitation: "us" * System-Freq in MHz must now overflow in 32 bit.
|
||||
Values between 0 and 1.000.000 (1 second) are ok.
|
||||
|
||||
Important: Call SystemCoreClockUpdate() before calling this function.
|
||||
*/
|
||||
void delay_micro_seconds(uint32_t us)
|
||||
{
|
||||
uint32_t sys_ticks;
|
||||
|
||||
sys_ticks = main_clk;
|
||||
sys_ticks /=1000000UL;
|
||||
sys_ticks *= us;
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||||
delay_system_ticks(sys_ticks);
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||||
}
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||||
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@ -0,0 +1,55 @@
|
|||
/*
|
||||
delay.h
|
||||
|
||||
LPC11U3x GPS Logger (https://github.com/olikraus/lpc11u3x-gps-logger)
|
||||
|
||||
Copyright (c) 2016, olikraus@gmail.com
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice, this list
|
||||
of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright notice, this
|
||||
list of conditions and the following disclaimer in the documentation and/or other
|
||||
materials provided with the distribution.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
*/
|
||||
|
||||
#ifndef _DELAY_H
|
||||
#define _DELAY_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/*
|
||||
Delay by the provided number of system ticks.
|
||||
Any values between 0 and 0x0ffffffff are allowed.
|
||||
*/
|
||||
void delay_system_ticks(uint32_t sys_ticks);
|
||||
|
||||
/*
|
||||
Delay by the provided number of micro seconds.
|
||||
Limitation: "us" * System-Freq in MHz must now overflow in 32 bit.
|
||||
Values between 0 and 1.000.000 (1 second) are ok.
|
||||
|
||||
Important: Call SystemCoreClockUpdate() before calling this function.
|
||||
*/
|
||||
void delay_micro_seconds(uint32_t us);
|
||||
|
||||
#endif /* _DELAY_H */
|
||||
|
|
@ -0,0 +1,177 @@
|
|||
/* source: gcc-arm-none-eabi-4_7-2013q1/share/gcc-arm-none-eabi/samples/ldscripts/mem.ld */
|
||||
|
||||
/* 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
|
||||
{
|
||||
/* LPC804 */
|
||||
FLASH (rx) : ORIGIN = 0x0, LENGTH = 0x8000 /* 32K for LPC804 */
|
||||
RAM (rwx) : ORIGIN = 0x10000000, LENGTH = 0x1000 /* 4K for LPC804 */
|
||||
}
|
||||
|
||||
/* source: gcc-arm-none-eabi-4_7-2013q1/share/gcc-arm-none-eabi/samples/ldscripts/sections.ld */
|
||||
|
||||
/* 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
|
||||
* __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 point */
|
||||
ENTRY(Reset_Handler)
|
||||
|
||||
/* extern declaration so that the value appears correctly for the LPC checksum calculation */
|
||||
EXTERN(NMI_Handler)
|
||||
EXTERN(HardFault_Handler)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.text :
|
||||
{
|
||||
KEEP(*(.isr_vector))
|
||||
*(.text*)
|
||||
|
||||
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*)
|
||||
|
||||
KEEP(*(.eh_frame*))
|
||||
} > FLASH
|
||||
|
||||
.ARM.extab :
|
||||
{
|
||||
*(.ARM.extab* .gnu.linkonce.armextab.*)
|
||||
} > FLASH
|
||||
|
||||
__exidx_start = .;
|
||||
.ARM.exidx :
|
||||
{
|
||||
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
|
||||
} > FLASH
|
||||
__exidx_end = .;
|
||||
|
||||
__etext = .;
|
||||
|
||||
.data : AT (__etext)
|
||||
{
|
||||
__data_start__ = .;
|
||||
*(vtable)
|
||||
*(.data*)
|
||||
|
||||
. = ALIGN(4);
|
||||
/* preinit data */
|
||||
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||
KEEP(*(.preinit_array))
|
||||
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||
|
||||
. = ALIGN(4);
|
||||
/* init data */
|
||||
PROVIDE_HIDDEN (__init_array_start = .);
|
||||
KEEP(*(SORT(.init_array.*)))
|
||||
KEEP(*(.init_array))
|
||||
PROVIDE_HIDDEN (__init_array_end = .);
|
||||
|
||||
|
||||
. = ALIGN(4);
|
||||
/* finit data */
|
||||
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||
KEEP(*(SORT(.fini_array.*)))
|
||||
KEEP(*(.fini_array))
|
||||
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||
|
||||
KEEP(*(.jcr*))
|
||||
. = ALIGN(4);
|
||||
/* All data end */
|
||||
__data_end__ = .;
|
||||
|
||||
} > RAM
|
||||
|
||||
.bss :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
__bss_start__ = .;
|
||||
*(.bss*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
__bss_end__ = .;
|
||||
} > RAM
|
||||
|
||||
.heap (COPY):
|
||||
{
|
||||
__end__ = .;
|
||||
end = __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*)
|
||||
} > RAM
|
||||
|
||||
/* Set stack top to end of RAM, and stack limit move down by
|
||||
* size of stack_dummy section */
|
||||
__StackTop = ORIGIN(RAM) + LENGTH(RAM);
|
||||
__StackLimit = __StackTop - SIZEOF(.stack_dummy);
|
||||
PROVIDE(__stack = __StackTop);
|
||||
|
||||
/* Check if data + heap + stack exceeds RAM limit */
|
||||
ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
|
||||
|
||||
/*
|
||||
http://www.lpcware.com/content/forum/lpc1788-flash-signature-generation
|
||||
Section 3.5.2/page 12 of the LPC82x User Manual
|
||||
|
||||
Linker works with even addresses, however to indicate thumb address mode,
|
||||
the lowest bit of the address is set to one. For the checksum calculation we
|
||||
only have the even addresses, however later in the isr table the compiler will
|
||||
store the odd addresses for the three handler subprocedures if compiled in
|
||||
thumb mode. Because of this, 3 is added to consider the three odd handler calls.
|
||||
*/
|
||||
LPC_checksum = 0- (__StackTop + Reset_Handler + NMI_Handler + HardFault_Handler + 3 /* three entries */);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,112 @@
|
|||
/*
|
||||
|
||||
main.c
|
||||
|
||||
PLU example
|
||||
|
||||
switch at PIO0_02 and PIO0_10
|
||||
LED at PIO0_09 and PIO0_15
|
||||
|
||||
*/
|
||||
|
||||
|
||||
#include <LPC8xx.h>
|
||||
#include <syscon.h>
|
||||
#include <gpio.h>
|
||||
#include <delay.h>
|
||||
|
||||
|
||||
void plu(void);
|
||||
|
||||
/*=======================================================================*/
|
||||
/* Configuration */
|
||||
#define SYS_TICK_PERIOD_IN_MS 100
|
||||
|
||||
|
||||
/*=======================================================================*/
|
||||
/* system procedures and sys tick master task */
|
||||
|
||||
|
||||
|
||||
volatile uint32_t sys_tick_irq_cnt=0;
|
||||
|
||||
|
||||
void __attribute__ ((interrupt)) SysTick_Handler(void)
|
||||
{
|
||||
sys_tick_irq_cnt++;
|
||||
}
|
||||
|
||||
|
||||
/*=======================================================================*/
|
||||
/*
|
||||
config: 0
|
||||
PIO0_2 --> PLUINPUT2 --> LUT4_INP0
|
||||
PIO0_10 --> IN0 --> OUT0 --> PIN0_22 --> PLUINPUT5 --> LUT4_INP1
|
||||
|
||||
Cfg | PIO10 PIO2 | result
|
||||
1 | 0 0 | 1
|
||||
|
||||
Cfg | PIO10 PIO2 | result
|
||||
2 | 0 1 | 1 falsch, sieht nach 2 | 1 0 | 1 aus (reihenfolge falsch???)
|
||||
|
||||
Cfg | PIO10 PIO2 | result
|
||||
3 | 0 1 | 1
|
||||
3 | 1 1 | 1
|
||||
|
||||
Config=1
|
||||
PIO10 PIO2 | result
|
||||
0 0 | 1 --> ok
|
||||
0 1 | 0
|
||||
1 0 | 0
|
||||
1 1 | 0
|
||||
|
||||
Config=1
|
||||
PIO10 PIO2 | result
|
||||
0 0 | 0 --> ok
|
||||
0 1 | 1
|
||||
1 0 | 0
|
||||
1 1 | 0
|
||||
|
||||
|
||||
|
||||
*/
|
||||
/*=======================================================================*/
|
||||
/*
|
||||
setup the hardware and start interrupts.
|
||||
called by "Reset_Handler"
|
||||
*/
|
||||
int __attribute__ ((noinline)) main(void)
|
||||
{
|
||||
|
||||
/* call to the lpc lib setup procedure. This will set the IRC as clk src and main clk to 24 MHz */
|
||||
SystemInit();
|
||||
|
||||
/* if the clock or PLL has been changed, also update the global variable SystemCoreClock */
|
||||
SystemCoreClockUpdate();
|
||||
|
||||
/* set systick and start systick interrupt */
|
||||
SysTick_Config(main_clk/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS);
|
||||
|
||||
/* */
|
||||
GPIOInit();
|
||||
|
||||
/* enable clock for several subsystems */
|
||||
|
||||
Enable_Periph_Clock(CLK_IOCON);
|
||||
Enable_Periph_Clock(CLK_SWM);
|
||||
|
||||
|
||||
GPIOSetDir( PORT0, 15, OUTPUT);
|
||||
GPIOSetDir( PORT0, 9, OUTPUT);
|
||||
GPIOSetDir( PORT0, 2, INPUT);
|
||||
|
||||
plu();
|
||||
|
||||
for(;;)
|
||||
{
|
||||
GPIOSetBitValue(PORT0, 15, 1);
|
||||
delay_micro_seconds(100000);
|
||||
GPIOSetBitValue(PORT0, 15, 0);
|
||||
delay_micro_seconds(1000000);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
|
||||
/*
|
||||
|
||||
startup.c
|
||||
|
||||
LPC804
|
||||
|
||||
Copyright (c) 2016, olikraus@gmail.com
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice, this list
|
||||
of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright notice, this
|
||||
list of conditions and the following disclaimer in the documentation and/or other
|
||||
materials provided with the distribution.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
|
||||
Requires code from the LPC804 example zip files
|
||||
|
||||
*/
|
||||
#include <LPC8xx.h>
|
||||
|
||||
|
||||
/*=======================================================================*/
|
||||
/* external functions */
|
||||
void __attribute__ ((interrupt)) SysTick_Handler(void);
|
||||
//void __attribute__ ((interrupt, used)) UART_IRQ(void);
|
||||
int __attribute__ ((noinline)) main(void);
|
||||
|
||||
|
||||
|
||||
/*=======================================================================*/
|
||||
/*
|
||||
Reserve some space for the stack. This is used to check if global variables + stack exceed RAM size.
|
||||
If -Wl,--gc-sections is used, then also define -Wl,--undefined=arm_stack_area to keep the variable in RAM.
|
||||
The name of the variable (here: arm_stack_area) does not matter.
|
||||
|
||||
Heap (=dynamic memory allocation) is not supported
|
||||
*/
|
||||
#ifndef __STACK_SIZE
|
||||
#define __STACK_SIZE 0x100
|
||||
#endif
|
||||
unsigned char arm_stack_area[__STACK_SIZE] __attribute__ ((section(".stack"))) __attribute__ ((aligned(8)));
|
||||
|
||||
|
||||
/*=======================================================================*/
|
||||
/* isr system procedures */
|
||||
|
||||
/* make the top of the stack known to the c compiler, value will be calculated by the linker script */
|
||||
void __StackTop(void);
|
||||
|
||||
void __attribute__ ((interrupt)) __attribute__ ((noreturn)) Reset_Handler(void)
|
||||
{
|
||||
register unsigned long *ptr;
|
||||
register unsigned long *start;
|
||||
register unsigned long *end;
|
||||
|
||||
/*
|
||||
The following two operations are not required in normal mode reset mode,
|
||||
however it is usefull if the reset handler is started via ISP "Go" command
|
||||
*/
|
||||
__set_MSP((uint32_t)__StackTop);
|
||||
//Chip_SYSCTL_Map(2);
|
||||
LPC_SYSCON->SYSMEMREMAP = (uint32_t) 2; // user flash mode: use user isr vector table
|
||||
|
||||
/*
|
||||
Loop to copy data from read only memory to RAM. The ranges
|
||||
of copy from/to are specified by following symbols evaluated in
|
||||
linker script.
|
||||
__etext: End of code section, i.e., begin of data sections to copy from.
|
||||
__data_start__/__data_end__: RAM address range that data should be
|
||||
copied to. Both must be aligned to 4 bytes boundary.
|
||||
*/
|
||||
extern unsigned long __data_start__[];
|
||||
extern unsigned long __data_end__[];
|
||||
extern unsigned long __etext[];
|
||||
ptr = __etext;
|
||||
start = __data_start__;
|
||||
end = __data_end__;
|
||||
while( start < end )
|
||||
{
|
||||
*start = *ptr;
|
||||
start++;
|
||||
ptr++;
|
||||
}
|
||||
|
||||
/*
|
||||
Loop to zero out BSS section, which uses following symbols
|
||||
in linker script:
|
||||
__bss_start__: start of BSS section. Must align to 4
|
||||
__bss_end__: end of BSS section. Must align to 4
|
||||
*/
|
||||
extern unsigned long __bss_start__[];
|
||||
extern unsigned long __bss_end__[];
|
||||
ptr = __bss_start__;
|
||||
end = __bss_end__;
|
||||
while( ptr < end )
|
||||
{
|
||||
*ptr = 0;
|
||||
ptr++;
|
||||
}
|
||||
|
||||
/* Call main procedure */
|
||||
main();
|
||||
|
||||
/* finished, do nothing. */
|
||||
for(;;)
|
||||
;
|
||||
}
|
||||
|
||||
/* "NMI_Handler" is used in the ld script to calculate the checksum */
|
||||
void __attribute__ ((interrupt)) NMI_Handler(void)
|
||||
{
|
||||
}
|
||||
|
||||
/* "HardFault_Handler" is used in the ld script to calculate the checksum */
|
||||
void __attribute__ ((interrupt)) HardFault_Handler(void)
|
||||
{
|
||||
}
|
||||
|
||||
/* make the checksum known to the c compiler, value will be calculated by the linker script */
|
||||
void LPC_checksum(void);
|
||||
|
||||
/*=======================================================================*/
|
||||
/* isr vector */
|
||||
/* based on LPC8xx.h */
|
||||
/* see table 38 of the LPC804 user manual (page 39) */
|
||||
|
||||
typedef void (*isr_handler_t)(void);
|
||||
isr_handler_t __isr_vector[48] __attribute__ ((section(".isr_vector"))) __attribute__ ((aligned(4)))=
|
||||
{
|
||||
__StackTop, /* 0x00: Top of Stack, calculated by the linker script */
|
||||
Reset_Handler, /* -15, 0x04: Reset Handler, DO NOT CHANGE THE ISR NAME (used for LPC_checksum calculation) */
|
||||
NMI_Handler, /* .14, 0x08: NMI Handler, DO NOT CHANGE THE ISR NAME (used for LPC_checksum calculation) */
|
||||
HardFault_Handler, /* -13, 0x0c: Hard Fault Handler, DO NOT CHANGE THE ISR NAME (used for LPC_checksum calculation) */
|
||||
0, /* 0x10: Reserved, must be 0 */
|
||||
0, /* 0x14: Reserved, must be 0 */
|
||||
0, /* 0x18: Reserved, must be 0 */
|
||||
LPC_checksum, /* 0x1c: Checksum, calculated by the linker script or the flash utility */
|
||||
0, /* Reserved */
|
||||
0, /* Reserved */
|
||||
0, /* Reserved */
|
||||
0, /* -5, SVCall Handler */
|
||||
0, /* -4, Reserved */
|
||||
0, /* -3, Reserved */
|
||||
0, /* -2, PendSV Handler */
|
||||
SysTick_Handler, /* -1, SysTick Handler */
|
||||
|
||||
|
||||
0, /* 0 SPI0_IRQn, SPI0 controller */
|
||||
0, /* 1 Not used/Reserved */
|
||||
0, /* 2 DAC0_IRQn, DAC0 Interrupt */
|
||||
0, /* 3 UART0_IRQn, USART0 */
|
||||
0, /* 4 UART1_IRQn, USART1 */
|
||||
0, /* 5 Not used */
|
||||
0, /* 6 Not used */
|
||||
0, /* 7 I2C1 controller */
|
||||
0, /* 8 I2C0 controller */
|
||||
0, /* 9 Not used/Reserved */
|
||||
0, /* 10 MRT_IRQnMulti-Rate Timer */
|
||||
0, /* 11 CMP_IRQn, Analog Comparator /CapTouch*/
|
||||
0, /* 12 WDT_IRQn WDT */
|
||||
0, /* 13 BOD_IRQn BOD Brown Out Detect */
|
||||
0, /* 14 FLASH_IRQn (/Reserved according to the user manual) */
|
||||
0, /* 15 WKT_IRQn Self wake-up timer */
|
||||
0, /* 16 ADC_SEQA_IRQn */
|
||||
0, /* 17 ADC_SEQB_IRQn */
|
||||
0, /* 18 ADC_THCMP_IRQn ADC threshold compare */
|
||||
0, /* 19 ADC_OVR_IRQn ADC overrun */
|
||||
0, /* 20 Not used/Reserved */
|
||||
0, /* 21 Not used/Reserved */
|
||||
0, /* 22 Not used/Reserved */
|
||||
0, /* 23 CTIMER0_IRQn, CT32B0_IRQ */
|
||||
0, /* 24 PIO INT0 */
|
||||
0, /* 25 PIO INT1 */
|
||||
0, /* 26 PIO INT2 */
|
||||
0, /* 27 PIO INT3 */
|
||||
0, /* 28 PIO INT4 */
|
||||
0, /* 29 PIO INT5 */
|
||||
0, /* 30 PIO INT6 */
|
||||
0 /* 31 PIO INT7 */
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue