1、新建工程
2、添加头文件
拷贝自C:\StellarisWare\inc
3、添加startup_gcc.c
拷贝自C:\StellarisWare\boards\ek-lm3s8962\hello\startup_gcc.c
4、添加main.c
1 #include "../Include/lm3s8962.h"
2 #include "../Include/hw_gpio.h"
3 #define DEBUG (1)
4 #define PF0_LED (0)
5 #define LED_OUT (GPIO_PORTF_DATA_BITS_R[1])
6 void led_init(void)
7 {
8 /* PORTF时钟使能 */
9 SYSCTL_RCGC2_R |= SYSCTL_RCGC2_GPIOF;
10 /* 写0x1ACCE551到GPIOLOCK解锁GPIOCR寄存器 */
11 GPIO_PORTF_LOCK_R = GPIO_LOCK_KEY;
12 /* 当GPIOCR的指定位为1时,写GPIOAFSEL位有效 */
13 GPIO_PORTF_CR_R |= (1 << PF0_LED);
14 /* PF0为GPIO模式 */
15 GPIO_PORTF_AFSEL_R &= ~(1 << PF0_LED);
16 /* PF0为输出 */
17 GPIO_PORTF_DIR_R |= (1 << PF0_LED);
18 /* PF0禁止输出开漏 */
19 GPIO_PORTF_ODR_R &= ~(1 << PF0_LED);
20 /* PF0数字输入输出使能 */
21 GPIO_PORTF_DEN_R |= (1 << PF0_LED);
22 /* PF0 8mA驱动输出使能 */
23 GPIO_PORTF_DR8R_R |= (1 << PF0_LED);
24 /* 仅对PF0写数据 */
25 /* 注意GPIO_PORTF_DATA_BITS_R为volatile unsigned long型*/
26 /* 因此对地址0x40025000+0x004的操作为GPIO_PORTF_DATA_BITS_R[1]*/
27 LED_OUT = 0;
28 }
29 void delay(unsigned long i)
30 {
31 while(i--);
32 }
33 int main(void)
34 {
35 led_init();
36 while(1)
37 {
38 delay(500000);
39 LED_OUT = 1;
40 delay(500000);
41 LED_OUT = 0;
42 }
43 return 0;
44 }
45
5、添加连接脚本文件lm3s8962-rom.ld
1 OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
2 MEMORY
3 {
4 FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 256K
5 SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
6 }
7 SECTIONS
8 {
9 .text :
10 {
11 _text = .;
12 KEEP(*(.isr_vector))
13 *(.text*)
14 _etext = .;
15 } > FLASH
16 .rodata :
17 {
18 _rodata = .;
19 *(.rodata*)
20 _erodata = .;
21 } > FLASH
22 .data : AT(ADDR(.rodata) + SIZEOF(.rodata))
23 {
24 _data = .;
25 *(vtable)
26 *(.data*)
27 _edata = .;
28 } > SRAM
29 .bss :
30 {
31 _bss = .;
32 *(.bss*)
33 *(COMMON)
34 _ebss = .;
35 } > SRAM
36 }
37
并在工程中设置
6、编译成功
7、使用OpenOCD进行调试
7.1、OpenOCD安装
下载地址：
http://www.freddiechopin.info/index.php/en/download/category/4-openocd
运行openocd-0.4.0.zip中的openocd.msi进行安装。
7.2、为Stellaris Evaluation Board安装libusb驱动
下载地址：
http://sourceforge.net/projects/libusb-win32/
解压libusb-win32-bin-1.2.2.0.zip到C:\
运行C:\libusb-win32-bin-1.2.2.0\bin\inf-wizard.exe
为Stellaris Evaluation Board (Interface 1)安装ftdichip官方驱动，因为Stellaris Evaluation Board (Interface 1)
是用来提供USB转串口的。
7.3、为EK-LM3S8962编写OpenOCD配置文件
7.3.1、参考C:\Program Files\OpenOCD\0.4.0\interface\luminary-lm3s811.cfg
新建C:\Program Files\OpenOCD\0.4.0\interface\luminary-lm3s8962.cfg
1 interface ft2232
2 ft2232_device_desc "Stellaris Evaluation Board"
3 ft2232_layout evb_lm3s811
4 ft2232_vid_pid 0x0403 0xbcd8
7.3.2、参考C:\Program Files\OpenOCD\0.4.0\target\lm3s811.cfg
新建C:\Program Files\OpenOCD\0.4.0\target\lm3s8962.cfg
1 # Script for TI/Luminary Stellaris LM3S8962
2
3 if { [info exists CHIPNAME] } {
4 set _CHIPNAME $CHIPNAME
5 } else {
6 set _CHIPNAME lm3s8962
7 }
8
9 if { [info exists CPUTAPID ] } {
10 set _CPUTAPID $CPUTAPID
11 } else {
12 set _CPUTAPID 0x3ba00477
13 }
14
15 #jtag scan chain
16 jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 1 -irmask 0xf -expected-id $_CPUTAPID
17
18 # the luminary variant causes a software reset rather than asserting SRST
19 # this stops the debug registers from being cleared
20 # this will be fixed in later revisions of silicon
21 set _TARGETNAME $_CHIPNAME.cpu
22 target create $_TARGETNAME cortex_m3 -chain-position $_CHIPNAME.cpu -variant lm3s
23
24 # 8k working area at base of ram, not backed up
25 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 0x2000
26
27 #flash configuration
28 set _FLASHNAME $_CHIPNAME.flash
29 flash bank $_FLASHNAME stellaris 0 0 0 0 $_TARGETNAME
30
7.3.3、参考C:\Program Files\OpenOCD\0.4.0\board\ek-lm3s811.cfg
新建C:\Program Files\OpenOCD\0.4.0\board\ek-lm3s8962.cfg
1 #
2 # TI/Luminary Stellaris LM3S8962 Evaluation Kits
3 #
4
5 # include the FT2232 interface config for on-board JTAG interface
6 source [find interface/luminary-lm3s8962.cfg]
7
8 # include the target config
9 source [find target/lm3s8962.cfg]
10
11 # jtag speed
12 jtag_khz 500
13
14 jtag_nsrst_delay 100
15
16 #LM3S811 Evaluation Board has only srst
17 reset_config srst_only
18
19 #Daemon Configuration
20 #TCP/IP Ports
21 telnet_port 4444
22 gdb_port 3333
23
7.4、在Eclipse中使用GDB Hardware Debugging连接OpenOCD进行调试
设置gdb和端口
运行OpenOCD
开始调试
