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Adding minimal libboard with lowlevel init and vectors

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This commit is contained in:
aethaniel 2011-05-31 23:17:52 +02:00
parent f08e822b17
commit fdfdd0b4bf
27 changed files with 1302 additions and 0 deletions
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42
hardware/tools/libboard_sam3s-ek/board.h Normal file
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#ifndef _BOARD_
#define _BOARD_
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "chip.h"
#include "include/bitbanding.h"
#include "include/board_lowlevel.h"
#include "include/timetick.h"
/**
* Libc porting layers
*/
#if defined ( __GNUC__ ) /* GCC CS3 */
# include "include/syscalls.h" /** RedHat Newlib minimal stub */
#endif
/*----------------------------------------------------------------------------
* Definitions
*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/** Name of the board */
#define BOARD_NAME "SAM3S-EK"
/*
#define BOARD_REV_A
*/
#define BOARD_REV_B
/** Frequency of the board main oscillator */
#define BOARD_MAINOSC 12000000
/** Master clock frequency (when using board_lowlevel.c) */
#define BOARD_MCK 64000000
#endif /* #ifndef _BOARD_ */

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# Makefile for compiling libboard
SUBMAKE_OPTIONS=--no-builtin-rules --no-builtin-variables
#-------------------------------------------------------------------------------
# Rules
#-------------------------------------------------------------------------------
all: sam3s_ek
.PHONY: sam3s_ek
sam3s_ek:
@echo --- Making sam3s_ek
@$(MAKE) DEBUG=1 $(SUBMAKE_OPTIONS) -f sam3s_ek.mk
@$(MAKE) $(SUBMAKE_OPTIONS) -f sam3s_ek.mk
.PHONY: clean
clean:
@echo --- Cleaning sam3s_ek
@$(MAKE) $(SUBMAKE_OPTIONS) -f sam3s_ek.mk $@
@$(MAKE) DEBUG=1 $(SUBMAKE_OPTIONS) -f sam3s_ek.mk $@

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# Optimization level
# -O1 Optimize
# -O2 Optimize even more
# -O3 Optimize yet more
# -O0 Reduce compilation time and make debugging produce the expected results
# -Os Optimize for size
OPTIMIZATION = -g -O0 -DDEBUG

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# Tool suffix when cross-compiling
#CROSS_COMPILE = ../../CodeSourcery_arm/bin/arm-none-eabi-
CROSS_COMPILE = C:/CodeSourcery_2011.03-42/bin/arm-none-eabi-
# Compilation tools
AR = $(CROSS_COMPILE)ar
CC = $(CROSS_COMPILE)gcc
AS = $(CROSS_COMPILE)as
#LD = $(CROSS_COMPILE)ld
#SIZE = $(CROSS_COMPILE)size
NM = $(CROSS_COMPILE)nm
#OBJCOPY = $(CROSS_COMPILE)objcopy
RM=cs-rm -Rf
SEP=/
# Flags
CFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2 -Wimplicit-int
CFLAGS += -Werror-implicit-function-declaration -Wmain -Wparentheses
CFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused
CFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef
CFLAGS += -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings
CFLAGS += -Wsign-compare -Waggregate-return -Wstrict-prototypes
CFLAGS += -Wmissing-prototypes -Wmissing-declarations
CFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations
CFLAGS += -Wpacked -Wredundant-decls -Wnested-externs -Winline -Wlong-long
CFLAGS += -Wunreachable-code
CFLAGS += -Wcast-align
#CFLAGS += -Wmissing-noreturn
#CFLAGS += -Wconversion
# To reduce application size use only integer printf function.
CFLAGS += -Dprintf=iprintf
CFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -mlong-calls -ffunction-sections
CFLAGS += $(OPTIMIZATION) $(INCLUDES) -D$(CHIP)
ASFLAGS = -mcpu=cortex-m3 -mthumb -Wall -a -g $(INCLUDES)

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# Optimization level
# -O1 Optimize
# -O2 Optimize even more
# -O3 Optimize yet more
# -O0 Reduce compilation time and make debugging produce the expected results
# -Os Optimize for size
OPTIMIZATION = -Os

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# Makefile for compiling libboard
.SUFFIXES: .o .a .c .s
CHIP=sam3s4
BOARD=sam3s_ek
LIBNAME=libboard
TOOLCHAIN=gcc
#-------------------------------------------------------------------------------
# Path
#-------------------------------------------------------------------------------
# Output directories
OUTPUT_BIN = ../lib
# Libraries
PROJECT_BASE_PATH = ..
#-------------------------------------------------------------------------------
# Files
#-------------------------------------------------------------------------------
vpath %.h $(PROJECT_BASE_PATH)/include
vpath %.c $(PROJECT_BASE_PATH)/source
vpath %.s $(PROJECT_BASE_PATH)/source
VPATH+=$(PROJECT_BASE_PATH)/source
INCLUDES = -I$(PROJECT_BASE_PATH)
INCLUDES += -I$(PROJECT_BASE_PATH)/include
INCLUDES += -I$(PROJECT_BASE_PATH)/../libchip_sam3s
#-------------------------------------------------------------------------------
ifdef DEBUG
include debug.mk
else
include release.mk
endif
#-------------------------------------------------------------------------------
# Tools
#-------------------------------------------------------------------------------
include $(TOOLCHAIN).mk
#-------------------------------------------------------------------------------
ifdef DEBUG
OUTPUT_OBJ=debug
OUTPUT_LIB=$(LIBNAME)_$(BOARD)_$(TOOLCHAIN)_dbg.a
else
OUTPUT_OBJ=release
OUTPUT_LIB=$(LIBNAME)_$(BOARD)_$(TOOLCHAIN)_rel.a
endif
OUTPUT_PATH=$(OUTPUT_OBJ)_$(BOARD)
#-------------------------------------------------------------------------------
# C source files and objects
#-------------------------------------------------------------------------------
C_SRC=$(wildcard $(PROJECT_BASE_PATH)/source/*.c)
C_OBJ_TEMP = $(patsubst %.c, %.o, $(notdir $(C_SRC)))
# during development, remove some files
C_OBJ_FILTER=
C_OBJ=$(filter-out $(C_OBJ_FILTER), $(C_OBJ_TEMP))
#-------------------------------------------------------------------------------
# Assembler source files and objects
#-------------------------------------------------------------------------------
A_SRC=$(wildcard $(PROJECT_BASE_PATH)/source/*.s)
A_OBJ_TEMP=$(patsubst %.s, %.o, $(notdir $(A_SRC)))
# during development, remove some files
A_OBJ_FILTER=
A_OBJ=$(filter-out $(A_OBJ_FILTER), $(A_OBJ_TEMP))
#-------------------------------------------------------------------------------
# Rules
#-------------------------------------------------------------------------------
all: $(BOARD)
$(BOARD): create_output $(OUTPUT_LIB)
.PHONY: create_output
create_output:
@echo --- Preparing $(BOARD) files $(OUTPUT_PATH) $(OUTPUT_BIN)
# @echo -------------------------
# @echo *$(C_SRC)
# @echo -------------------------
# @echo *$(C_OBJ)
# @echo -------------------------
# @echo *$(addprefix $(OUTPUT_PATH)/, $(C_OBJ))
# @echo -------------------------
# @echo *$(A_SRC)
# @echo -------------------------
-@mkdir $(subst /,$(SEP),$(OUTPUT_BIN)) 1>NUL 2>&1
-@mkdir $(OUTPUT_PATH) 1>NUL 2>&1
$(addprefix $(OUTPUT_PATH)/,$(C_OBJ)): $(OUTPUT_PATH)/%.o: %.c
@$(CC) -c $(CFLAGS) $< -o $@
$(addprefix $(OUTPUT_PATH)/,$(A_OBJ)): $(OUTPUT_PATH)/%.o: %.s
@$(AS) -c $(ASFLAGS) $< -o $@
$(OUTPUT_LIB): $(addprefix $(OUTPUT_PATH)/, $(C_OBJ)) $(addprefix $(OUTPUT_PATH)/, $(A_OBJ))
@$(AR) -r "$(OUTPUT_BIN)/$@" $^
@$(NM) "$(OUTPUT_BIN)/$@" > "$(OUTPUT_BIN)/$@.txt"
.PHONY: clean
clean:
@echo --- Cleaning $(BOARD) files [$(OUTPUT_PATH)$(SEP)*.o]
-@$(RM) $(OUTPUT_PATH) 1>NUL 2>&1
-@$(RM) $(OUTPUT_BIN)/$(OUTPUT_LIB) 1>NUL 2>&1
-@$(RM) $(OUTPUT_BIN)/$(OUTPUT_LIB).txt 1>NUL 2>&1
# dependencies
$(addprefix $(OUTPUT_PATH)/,$(C_OBJ)): $(OUTPUT_PATH)/%.o: $(PROJECT_BASE_PATH)/board.h $(wildcard $(PROJECT_BASE_PATH)/include/*.h)

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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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 _BITBANDING_
#define _BITBANDING_
/*----------------------------------------------------------------------------
* \file bitbanding.h
* Include Defines & macros for bit-banding.
*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
* Header files
*----------------------------------------------------------------------------*/
#include <stdint.h>
/*----------------------------------------------------------------------------
* Global Macros
*----------------------------------------------------------------------------*/
/**
* \brief Check if the address is in bit banding sram region.
*
* \note The address should be in area of 0x2000000 ~ 0x200FFFFF
*
* \param x The address to check.
*/
#define IS_BITBAND_SRAM_ADDR(x) \
( ((uint32_t)(x)) >= 0x20000000 && \
((uint32_t)(x)) < (0x20000000+0x100000) )
/**
* \brief Check if the address is in bit banding peripheral region
*
* \note The address should be in area of 0x4000000 ~ 0x400FFFFF
* \param x The address to check
*/
#define IS_BITBAND_PERIPH_ADDR(x) \
( ((uint32_t)(x)) >= 0x40000000 && \
((uint32_t)(x)) < (0x40000000+0x100000) )
/**
* \brief Calculate bit band alias address.
*
* Calculate the bit band alias address and return a pointer address to word.
*
* \param addr The byte address of bitbanding bit.
* \param bit The bit position of bitbanding bit.
* \callergraph
*/
#define BITBAND_ALIAS_ADDRESS(addr, bit) \
((volatile uint32_t*)((((uint32_t)(addr) & 0xF0000000) + 0x02000000) \
+((((uint32_t)(addr)&0xFFFFF)*32)\
+( (uint32_t)(bit)*4))))
/**
* \brief Bit write through bit banding.
*
* \param addr32 32-bit aligned byte address where the bit exists.
* \param bit Bit position.
* \param val The value that the bit is set to.
* \callergraph
*/
#define WRITE_BITBANDING(addr32, bit, val) do {\
*BITBAND_ALIAS_ADDRESS(addr32,bit) = (val); \
} while (0);
/**
* \brief Toggle bit through bit banding
*
* \param addr32 32-bit aligned byte address where the bit exists.
* \param bit Bit position.
*/
#define TOGGLE_BITBANDING(addr32, bit) do {\
volatile uint32_t * p = \
BITBAND_ALIAS_ADDRESS(addr32,bit); \
if (*p) *p = 0; \
else *p = 1; \
}while(0);
#endif /* #ifndef _BITBANDING_ */

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hardware/tools/libboard_sam3s-ek/include/board_lowlevel.h Normal file
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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/**
* \file
*
* Interface for the low-level initialization function.
*
*/
#ifndef BOARD_LOWLEVEL_H
#define BOARD_LOWLEVEL_H
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
extern void LowLevelInit( void ) ;
#endif /* BOARD_LOWLEVEL_H */

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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/**
* \file syscalls.h
*
* Implementation of newlib syscall.
*
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
extern caddr_t _sbrk ( int incr ) ;
extern int link( char *old, char *new ) ;
extern int _close( int file ) ;
extern int _fstat( int file, struct stat *st ) ;
extern int _isatty( int file ) ;
extern int _lseek( int file, int ptr, int dir ) ;
extern int _read(int file, char *ptr, int len) ;
extern int _write( int file, char *ptr, int len ) ;

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hardware/tools/libboard_sam3s-ek/include/timetick.h Normal file
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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/**
* \file
*
* \par Purpose
*
* Methods and definitions for Global time tick and wait functions.
*
* Defines a common and simpliest use of Time Tick, to increase tickCount
* every 1ms, the application can get this value through GetTickCount().
*
* \par Usage
*
* -# Configure the System Tick with TimeTick_Configure() when MCK changed
* \note
* Must be done before any invoke of GetTickCount(), Wait() or Sleep().
* -# Uses GetTickCount to get current tick value.
* -# Uses Wait to wait several ms.
* -# Uses Sleep to enter wait for interrupt mode to wait several ms.
*
*/
#ifndef _TIMETICK_
#define _TIMETICK_
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include <stdint.h>
/*----------------------------------------------------------------------------
* Definitions
*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
* Global functions
*----------------------------------------------------------------------------*/
extern uint32_t TimeTick_Configure( uint32_t dwNew_MCK ) ;
extern void TimeTick_Increment( void ) ;
extern uint32_t GetTickCount( void ) ;
extern void Wait( volatile uint32_t dwMs ) ;
extern void Sleep( volatile uint32_t dwMs ) ;
#endif /* _TIMETICK_ */

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board_cstartup_gnu.o:
00000000 W ACC_IrqHandler
00000000 W ADC_IrqHandler
00000000 W BusFault_Handler
00000000 W CRCCU_IrqHandler
00000000 W DAC_IrqHandler
00000000 W DebugMon_Handler
00000000 T Dummy_Handler
00000000 W EEFC_IrqHandler
00000000 W HardFault_Handler
U LowLevelInit
00000000 W MCI_IrqHandler
00000000 W MemManage_Handler
00000000 W NMI_Handler
00000000 W PIOA_IrqHandler
00000000 W PIOB_IrqHandler
00000000 W PIOC_IrqHandler
00000000 W PMC_IrqHandler
00000000 W PWM_IrqHandler
00000000 W PendSV_Handler
00000000 W RSTC_IrqHandler
00000000 W RTC_IrqHandler
00000000 W RTT_IrqHandler
00000000 T Reset_Handler
00000000 W SMC_IrqHandler
00000000 W SPI_IrqHandler
00000000 W SSC_IrqHandler
00000000 W SUPC_IrqHandler
00000000 W SVC_Handler
00000000 W SysTick_Handler
00000000 W TC0_IrqHandler
00000000 W TC1_IrqHandler
00000000 W TC2_IrqHandler
00000000 W TC3_IrqHandler
00000000 W TC4_IrqHandler
00000000 W TC5_IrqHandler
00000000 W TWI0_IrqHandler
00000000 W TWI1_IrqHandler
00000000 W UART0_IrqHandler
00000000 W UART1_IrqHandler
00000000 W USART0_IrqHandler
00000000 W USART1_IrqHandler
00000000 W USBD_IrqHandler
00000000 W UsageFault_Handler
00000000 W WDT_IrqHandler
U __libc_init_array
U _erelocate
U _etext
U _ezero
U _sfixed
U _srelocate
U _szero
U main
00000000 D pdwStack
00000000 D vector_table
board_lowlevel.o:
00000000 W LowLevelInit
syscalls.o:
00000000 T _close
U _end
00000000 T _exit
00000000 T _fstat
00000000 T _getpid
00000000 T _isatty
00000000 T _kill
00000000 T _lseek
00000000 T _read
00000000 T _sbrk
00000000 T _write
00000000 b heap.6737
U iprintf
00000000 T link
timetick.o:
00000000 T GetTickCount
00000000 t NVIC_SetPriority
00000000 T Sleep
00000000 t SysTick_Config
00000000 T TimeTick_Configure
00000000 T TimeTick_Increment
00000000 T Wait
00000000 b _dwTickCount

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board_cstartup_gnu.o:
00000000 W ACC_IrqHandler
00000000 W ADC_IrqHandler
00000000 W BusFault_Handler
00000000 W CRCCU_IrqHandler
00000000 W DAC_IrqHandler
00000000 W DebugMon_Handler
00000000 T Dummy_Handler
00000000 W EEFC_IrqHandler
00000000 W HardFault_Handler
U LowLevelInit
00000000 W MCI_IrqHandler
00000000 W MemManage_Handler
00000000 W NMI_Handler
00000000 W PIOA_IrqHandler
00000000 W PIOB_IrqHandler
00000000 W PIOC_IrqHandler
00000000 W PMC_IrqHandler
00000000 W PWM_IrqHandler
00000000 W PendSV_Handler
00000000 W RSTC_IrqHandler
00000000 W RTC_IrqHandler
00000000 W RTT_IrqHandler
00000000 T Reset_Handler
00000000 W SMC_IrqHandler
00000000 W SPI_IrqHandler
00000000 W SSC_IrqHandler
00000000 W SUPC_IrqHandler
00000000 W SVC_Handler
00000000 W SysTick_Handler
00000000 W TC0_IrqHandler
00000000 W TC1_IrqHandler
00000000 W TC2_IrqHandler
00000000 W TC3_IrqHandler
00000000 W TC4_IrqHandler
00000000 W TC5_IrqHandler
00000000 W TWI0_IrqHandler
00000000 W TWI1_IrqHandler
00000000 W UART0_IrqHandler
00000000 W UART1_IrqHandler
00000000 W USART0_IrqHandler
00000000 W USART1_IrqHandler
00000000 W USBD_IrqHandler
00000000 W UsageFault_Handler
00000000 W WDT_IrqHandler
U __libc_init_array
U _erelocate
U _etext
U _ezero
U _sfixed
U _srelocate
U _szero
U main
00000000 D pdwStack
00000000 D vector_table
board_lowlevel.o:
00000000 W LowLevelInit
syscalls.o:
00000000 T _close
U _end
00000000 T _exit
00000000 T _fstat
00000000 T _getpid
00000000 T _isatty
00000000 T _kill
00000000 T _lseek
00000000 T _read
00000000 T _sbrk
00000000 T _write
00000000 b heap.6728
U iprintf
00000000 T link
timetick.o:
00000000 T GetTickCount
00000000 T Sleep
00000000 T TimeTick_Configure
00000000 T TimeTick_Increment
00000000 T Wait
00000000 b _dwTickCount

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hardware/tools/libboard_sam3s-ek/pins.txt Normal file
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hardware/tools/libboard_sam3s-ek/source/board_cstartup_gnu.c Normal file
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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2010, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "board.h"
/*----------------------------------------------------------------------------
* Exported variables
*----------------------------------------------------------------------------*/
/* Stack Configuration */
#define STACK_SIZE 0x900 /** Stack size (in DWords) */
__attribute__ ((aligned(8),section(".stack")))
uint32_t pdwStack[STACK_SIZE] ;
/* Initialize segments */
extern uint32_t _sfixed;
extern uint32_t _efixed;
extern uint32_t _etext;
extern uint32_t _srelocate;
extern uint32_t _erelocate;
extern uint32_t _szero;
extern uint32_t _ezero;
/*----------------------------------------------------------------------------
* Prototypes
*----------------------------------------------------------------------------*/
/** \cond DOXYGEN_SHOULD_SKIP_THIS */
extern int main( void ) ;
/** \endcond */
void Reset_Handler( void ) ;
extern void __libc_init_array( void ) ;
/* Default empty handler */
void Dummy_Handler( void ) ;
/* Cortex-M3 core handlers */
extern void NMI_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void HardFault_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void MemManage_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void BusFault_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void UsageFault_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void SVC_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void DebugMon_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void PendSV_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void SysTick_Handler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
/* Peripherals handlers */
extern void ACC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void ADC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void CRCCU_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void DAC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void EEFC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void MCI_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void PIOA_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void PIOB_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void PIOC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void PMC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void PWM_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void RSTC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void RTC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void RTT_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void SMC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void SPI_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void SSC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void SUPC_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TC0_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TC1_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TC2_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TC3_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TC4_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TC5_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TWI0_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void TWI1_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void UART0_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void UART1_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void USART0_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void USART1_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void USBD_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
extern void WDT_IrqHandler( void ) __attribute__ ((weak, alias ("Dummy_Handler"))) ;
/*------------------------------------------------------------------------------
* Exception Table
*------------------------------------------------------------------------------*/
void* vector_table[] __attribute__ ((section(".vectors"))) = {
/* Configure Initial Stack Pointer, using linker-generated symbols */
(IntFunc)(&pdwStack[STACK_SIZE-1]),
Reset_Handler,
NMI_Handler,
HardFault_Handler,
MemManage_Handler,
BusFault_Handler,
UsageFault_Handler,
0, 0, 0, 0, /* Reserved */
SVC_Handler,
DebugMon_Handler,
0, /* Reserved */
PendSV_Handler,
SysTick_Handler,
/* Configurable interrupts */
SUPC_IrqHandler, /* 0 Supply Controller */
RSTC_IrqHandler, /* 1 Reset Controller */
RTC_IrqHandler, /* 2 Real Time Clock */
RTT_IrqHandler, /* 3 Real Time Timer */
WDT_IrqHandler, /* 4 Watchdog Timer */
PMC_IrqHandler, /* 5 PMC */
EEFC_IrqHandler, /* 6 EEFC */
Dummy_Handler, /* 7 Reserved */
UART0_IrqHandler, /* 8 UART0 */
UART1_IrqHandler, /* 9 UART1 */
SMC_IrqHandler, /* 10 SMC */
PIOA_IrqHandler, /* 11 Parallel IO Controller A */
PIOB_IrqHandler, /* 12 Parallel IO Controller B */
PIOC_IrqHandler, /* 13 Parallel IO Controller C */
USART0_IrqHandler, /* 14 USART 0 */
USART1_IrqHandler, /* 15 USART 1 */
Dummy_Handler, /* 16 Reserved */
Dummy_Handler, /* 17 Reserved */
MCI_IrqHandler, /* 18 MCI */
TWI0_IrqHandler, /* 19 TWI 0 */
TWI1_IrqHandler, /* 20 TWI 1 */
SPI_IrqHandler, /* 21 SPI */
SSC_IrqHandler, /* 22 SSC */
TC0_IrqHandler, /* 23 Timer Counter 0 */
TC1_IrqHandler, /* 24 Timer Counter 1 */
TC2_IrqHandler, /* 25 Timer Counter 2 */
TC3_IrqHandler, /* 26 Timer Counter 3 */
TC4_IrqHandler, /* 27 Timer Counter 4 */
TC5_IrqHandler, /* 28 Timer Counter 5 */
ADC_IrqHandler, /* 29 ADC controller */
DAC_IrqHandler, /* 30 DAC controller */
PWM_IrqHandler, /* 31 PWM */
CRCCU_IrqHandler, /* 32 CRC Calculation Unit */
ACC_IrqHandler, /* 33 Analog Comparator */
USBD_IrqHandler, /* 34 USB Device Port */
Dummy_Handler /* 35 not used */
};
/**
* \brief This is the code that gets called on processor reset.
* To initialize the device, and call the main() routine.
*/
void Reset_Handler( void )
{
uint32_t *pSrc, *pDest ;
/* Low level Initialize */
LowLevelInit() ;
/* Initialize the relocate segment */
pSrc = &_etext ;
pDest = &_srelocate ;
if ( pSrc != pDest )
{
for ( ; pDest < &_erelocate ; )
{
*pDest++ = *pSrc++ ;
}
}
/* Clear the zero segment */
for ( pDest = &_szero ; pDest < &_ezero ; )
{
*pDest++ = 0;
}
/* Set the vector table base address */
pSrc = (uint32_t *)&_sfixed;
SCB->VTOR = ( (uint32_t)pSrc & SCB_VTOR_TBLOFF_Msk ) ;
if ( ((uint32_t)pSrc >= IRAM_ADDR) && ((uint32_t)pSrc < IRAM_ADDR+IRAM_SIZE) )
{
SCB->VTOR |= 1 << SCB_VTOR_TBLBASE_Pos ;
}
/* Initialize the C library */
__libc_init_array() ;
/* Branch to main function */
main() ;
/* Infinite loop */
while ( 1 ) ;
}
/**
* \brief Default interrupt handler for not used irq.
*/
void Dummy_Handler( void )
{
while ( 1 ) ;
}

111
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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/**
* \file
*
* Provides the low-level initialization function that called on chip startup.
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "board.h"
/*----------------------------------------------------------------------------
* Local definitions
*----------------------------------------------------------------------------*/
/* Clock settings at 48MHz */
#if (BOARD_MCK == 48000000)
#define BOARD_OSCOUNT (CKGR_MOR_MOSCXTST(0x8))
#define BOARD_PLLAR (CKGR_PLLAR_STUCKTO1 \
| CKGR_PLLAR_MULA(0x7) \
| CKGR_PLLAR_PLLACOUNT(0x1) \
| CKGR_PLLAR_DIVA(0x1))
#define BOARD_MCKR (PMC_MCKR_PRES_CLK_2 | PMC_MCKR_CSS_PLLA_CLK)
/* Clock settings at 64MHz */
#elif (BOARD_MCK == 64000000)
#define BOARD_OSCOUNT (CKGR_MOR_MOSCXTST(0x8))
#define BOARD_PLLAR (CKGR_PLLAR_STUCKTO1 \
| CKGR_PLLAR_MULA(0x0f) \
| CKGR_PLLAR_PLLACOUNT(0x1) \
| CKGR_PLLAR_DIVA(0x3))
#define BOARD_MCKR (PMC_MCKR_PRES_CLK | PMC_MCKR_CSS_PLLA_CLK)
#else
#error "No settings for current BOARD_MCK."
#endif
/* Define clock timeout */
#define CLOCK_TIMEOUT 0xFFFFFFFF
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
/**
* \brief Performs the low-level initialization of the chip.
* This includes EFC and master clock configuration.
* It also enable a low level on the pin NRST triggers a user reset.
*/
extern WEAK void LowLevelInit( void )
{
uint32_t dwTimeOut = 0 ;
/* Set 3 FWS for Embedded Flash Access @ 64MHz, we are now at 4MHz on Internal FastRC */
EFC->EEFC_FMR = EEFC_FMR_FWS( 3 ) ;
/* Initialize main oscillator */
if ( !(PMC->CKGR_MOR & CKGR_MOR_MOSCSEL) )
{
PMC->CKGR_MOR = CKGR_MOR_KEY(0x37) | BOARD_OSCOUNT | CKGR_MOR_MOSCRCEN | CKGR_MOR_MOSCXTEN;
for ( dwTimeOut = 0 ; !(PMC->PMC_SR & PMC_SR_MOSCXTS) && (dwTimeOut++ < CLOCK_TIMEOUT) ; ) ;
}
/* Switch to 3-20MHz Xtal oscillator */
PMC->CKGR_MOR = CKGR_MOR_KEY(0x37) | BOARD_OSCOUNT | CKGR_MOR_MOSCRCEN | CKGR_MOR_MOSCXTEN | CKGR_MOR_MOSCSEL;
for ( dwTimeOut = 0 ; !(PMC->PMC_SR & PMC_SR_MOSCSELS) && (dwTimeOut++ < CLOCK_TIMEOUT) ; ) ;
PMC->PMC_MCKR = (PMC->PMC_MCKR & ~(uint32_t)PMC_MCKR_CSS_Msk) | PMC_MCKR_CSS_MAIN_CLK;
for ( dwTimeOut = 0 ; !(PMC->PMC_SR & PMC_SR_MCKRDY) && (dwTimeOut++ < CLOCK_TIMEOUT) ; ) ;
/* Initialize PLLA */
PMC->CKGR_PLLAR = BOARD_PLLAR ;
for ( dwTimeOut = 0 ; !(PMC->PMC_SR & PMC_SR_LOCKA) && (dwTimeOut++ < CLOCK_TIMEOUT) ; ) ;
/* Switch to main clock */
PMC->PMC_MCKR = (BOARD_MCKR & ~PMC_MCKR_CSS_Msk) | PMC_MCKR_CSS_MAIN_CLK;
for ( dwTimeOut = 0 ; !(PMC->PMC_SR & PMC_SR_MCKRDY) && (dwTimeOut++ < CLOCK_TIMEOUT) ; ) ;
PMC->PMC_MCKR = BOARD_MCKR ;
for ( dwTimeOut = 0 ; !(PMC->PMC_SR & PMC_SR_MCKRDY) && (dwTimeOut++ < CLOCK_TIMEOUT) ; ) ;
}

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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/**
* \file syscalls.c
*
* Implementation of newlib syscall.
*
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "board.h"
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
/*----------------------------------------------------------------------------
* Exported variables
*----------------------------------------------------------------------------*/
#undef errno
extern int errno ;
extern int _end ;
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
extern void _exit( int status ) ;
extern void _kill( int pid, int sig ) ;
extern int _getpid ( void ) ;
extern caddr_t _sbrk ( int incr )
{
static unsigned char *heap = NULL ;
unsigned char *prev_heap ;
if ( heap == NULL )
{
heap = (unsigned char *)&_end ;
}
prev_heap = heap;
heap += incr ;
return (caddr_t) prev_heap ;
}
extern int link( char *old, char *new )
{
return -1 ;
}
extern int _close( int file )
{
return -1 ;
}
extern int _fstat( int file, struct stat *st )
{
st->st_mode = S_IFCHR ;
return 0 ;
}
extern int _isatty( int file )
{
return 1 ;
}
extern int _lseek( int file, int ptr, int dir )
{
return 0 ;
}
extern int _read(int file, char *ptr, int len)
{
return 0 ;
}
extern int _write( int file, char *ptr, int len )
{
int iIndex ;
// for ( ; *ptr != 0 ; ptr++ )
for ( iIndex=0 ; iIndex < len ; iIndex++, ptr++ )
{
// UART_PutChar( *ptr ) ;
}
return iIndex ;
}
extern void _exit( int status )
{
printf( "Exiting with status %d.\n", status ) ;
for ( ; ; ) ;
}
extern void _kill( int pid, int sig )
{
return ;
}
extern int _getpid ( void )
{
return -1 ;
}

118
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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
/**
* \file
* Implement simple system tick usage.
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "board.h"
/*----------------------------------------------------------------------------
* Local variables
*----------------------------------------------------------------------------*/
/** Tick Counter united by ms */
static volatile uint32_t _dwTickCount=0 ;
/*----------------------------------------------------------------------------
* Exported Functions
*----------------------------------------------------------------------------*/
/**
* \brief Handler for Sytem Tick interrupt.
*/
extern void TimeTick_Increment( void )
{
_dwTickCount++ ;
}
/**
* \brief Configures the SAM3 SysTick & reset tickCount.
* Systick interrupt handler will generates 1ms interrupt and increase a
* tickCount.
* \param dwNew_MCK Current master clock.
*/
extern uint32_t TimeTick_Configure( uint32_t dwNew_MCK )
{
_dwTickCount = 0 ;
return SysTick_Config( dwNew_MCK/1000 ) ;
}
/**
* \brief Get current Tick Count, in ms.
*/
extern uint32_t GetTickCount( void )
{
return _dwTickCount ;
}
/**
* \brief Sync Wait for several ms
*/
extern void Wait( volatile uint32_t dwMs )
{
uint32_t dwStart ;
uint32_t dwCurrent ;
dwStart = _dwTickCount ;
do
{
dwCurrent = _dwTickCount ;
} while ( dwCurrent - dwStart < dwMs ) ;
}
/**
* \brief Sync Sleep for several ms
*/
extern void Sleep( volatile uint32_t dwMs )
{
uint32_t dwStart ;
uint32_t dwCurrent ;
dwStart = _dwTickCount ;
do
{
dwCurrent = _dwTickCount ;
if ( dwCurrent - dwStart > dwMs )
{
break ;
}
__WFI() ;
} while( 1 ) ;
}