我目前正致力于为天空微尘开发无线编程支持。附件是我目前拥有的文件。我基本上是在尝试使用 sky-shell-exec 示例将修改后的 test-deluge.ce 文件加载到节点上。然后我尝试使用 shell 'exec' 命令运行 test-deluge 文件,就像在 sky-shell-exec 示例中所做的那样。
最终目标是将 test-deluge.ce 和 hello-world.ce 编译文件加载到节点上,然后能够“执行”我的 test-deluge.ce 文件,该文件随后会找到存储的 hello-world.ce文件并对其进行 deluge_disseminate。
我运行的命令进程如下:
1) sudo make TARGET=sky clean CLEAN=symbols.?
2) sudo make sky-shell-exec.sky TARGET=sky
3) sudo make sky-shell-exec.sky CORE=sky-shell-exec.sky TARGET=sky
4) sudo make sky-shell-exec.upload CORE=sky-shell-exec.sky
5) sudo make compile-test-deluge-executable
6) sudo make upload-test-deluge-executable
7) sudo make login
8) ls (to see that the file made it)
9) exec test-deluge.ce
此时我收到“找不到符号:deluge_disseminate”错误
我认为错误出在 make 的“CORE=...”部分(在上面的第 2 步中)。我已经检查了在上述步骤 2 中填写的 symbols.c 文件,确实没有 deluge_disseminate 符号或我记得的与此相关的任何 deluge 命令。
为了实验,我尝试了以下方法:
sudo make test-deluge.sky TARGET=sky
sudo make test-deluge.sky CORE=test-deluge.sky TARGET=sky
我发现 deluge 的符号在那里,但我无法继续正确制作 sky-shell-exec 文件,因为这样做会删除符号表并写入一个新的。
我觉得必须有一个简单的修复方法,因为我可以在执行上述步骤 (1-9) 后从 sky-shell-exec 示例目录运行 hello-world。
有人知道如何解决这个问题吗?
注意:我的 test-deluge.c 中可能存在错误,我尝试打开“hello-world.sky”而不是“hello-world.ce”...我不确定是哪个。由于上面解释的缺少符号问题,我还无法对此进行测试,但如果有人愿意阐明这个问题,我将非常感激。
谢谢
生成文件
CONTIKI = ../..
ifndef TARGET
TARGET=sky
endif
APPS = deluge serial-shell
all: blink sky-collect #rt-leds test-button test-cfs tcprudolph0
#all: $(CONTIKI_PROJECT)
%.tgz: %.ihex
mkdir $(basename $<) ; \
mv $< $(basename $<) ; \
echo $(basename $<)/$(basename $<).ihex 600 > $(basename $<)/runfile ; \
tar czf $@ $(basename $<)
%.class: %.java
javac $(basename $<).java
viewrssi: ViewRSSI.class
make login | java ViewRSSI
include $(CONTIKI)/Makefile.include
%.shell-upload: %.ce
(echo; sleep 4; echo "~K"; sleep 4; \
echo "dec64 | write $*.ce | null"; sleep 4; \
../../tools/base64-encode < $<; sleep 4; \
echo ""; echo "~K"; echo "read $*.ce | size"; sleep 4) | make login
.PHONY: compile-test-deluge-executable upload-test-deluge-executable compile-hello-world-executable upload-test-deluge-executable
compile-hello-world-executable: hello-world.ce
echo Compiled Contiki executable: $<
upload-hello-world-executable: hello-world.shell-upload
echo Uploaded Contiki executable: $<
compile-test-deluge-executable: test-deluge.ce
echo Compiled Contiki executable: $<
upload-test-deluge-executable: test-deluge.shell-upload
echo Uploaded Contiki executable: $<
sky-shell-exec.c
#include "contiki.h"
#include "shell.h"
#include "serial-shell.h"
#include "deluge.h"
#include "dev/watchdog.h"
#include "net/rime.h"
#include "dev/cc2420.h"
#include "dev/leds.h"
#include "dev/light.h"
#include "dev/sht11.h"
#include "dev/battery-sensor.h"
#include "lib/checkpoint.h"
#include "net/rime/timesynch.h"
#include <stdio.h>
#include <string.h>
int (*keep_1)(void) = deluge_disseminate;
int (*keep_2)(void) = node_id_burn;
/*---------------------------------------------------------------------------*/
PROCESS(sky_shell_process, "Sky Contiki shell");
AUTOSTART_PROCESSES(&sky_shell_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(sky_shell_process, ev, data)
{
PROCESS_BEGIN();
serial_shell_init();
/*shell_blink_init();*/
shell_file_init();
shell_coffee_init();
/*shell_ps_init();*/
/*shell_reboot_init();*/
/*shell_rime_init();*/
/*shell_rime_netcmd_init();*/
/*shell_rime_ping_init();*/
/*shell_rime_debug_init();*/
/*shell_rime_sniff_init();*/
/*shell_sky_init();*/
shell_text_init();
/*shell_time_init();*/
/* shell_checkpoint_init();*/
shell_exec_init();
shell_base64_init();
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
test-deluge.c
#include "contiki.h"
#include "cfs/cfs.h"
#include "deluge.h"
#include "sys/node-id.h"
#include "loader/elfloader.h"
#include <stdio.h>
#include <string.h>
#ifndef SINK_ID
#define SINK_ID 1
#endif
#ifndef FILE_SIZE
#define FILE_SIZE 1000
#endif
PROCESS(deluge_test_process, "Deluge test process");
AUTOSTART_PROCESSES(&deluge_test_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(deluge_test_process, ev, data)
{
static struct etimer et;
node_id_burn(2);
PROCESS_BEGIN();
if(node_id == SINK_ID) {
printf("Sink node: trying to transmit file.\n");
} else {
printf("Non-sink node: trying to recieve file.\n");
}
cfs_remove("hello-world.sky");
int fd = cfs_open("hello-world.sky", CFS_WRITE | CFS_READ);
if(fd < 0) {
process_exit(NULL);
}
#if 0
if(cfs_seek(fd, FILE_SIZE, CFS_SEEK_SET) != FILE_SIZE) {
printf("failed to seek to the end\n");
}
#endif
deluge_disseminate("hello-world.sky", node_id == SINK_ID);
cfs_close(fd);
etimer_set(&et, CLOCK_SECOND * 5);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
if(node_id != SINK_ID) {
fd = cfs_open("hello-world.sky", CFS_READ);
if(fd < 0) {
printf("failed to open the test file\n");
} else {
printf("Start dynamic loading\n");
int ret = elfloader_load(fd);
printf("%d\n", ret);
cfs_close(fd);
int i;
switch(ret) {
case ELFLOADER_OK:
for(i=0; elfloader_autostart_processes[i] != NULL; i++) {
printf("exec: starting process %s. \n",
elfloader_autostart_processes[i]->name);
}
autostart_start(elfloader_autostart_processes);
break;
default:
printf("Unkown return code from ELF loader (internal bug)\n");
break;
}
}
}
etimer_reset(&et);
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
hello-world.c
#include "contiki.h"
#include <stdio.h> /* For printf() */
/*---------------------------------------------------------------------------*/
PROCESS(hello_world_process, "Hello world process");
AUTOSTART_PROCESSES(&hello_world_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(hello_world_process, ev, data)
{
PROCESS_BEGIN();
printf("Hello, world\n");
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
最佳答案
因此,在 contiki 社区的大力帮助下,我能够收集到以下解决方案:
“你好,
问题在于 Contiki 的构建系统试图“聪明行事” 并排除应用程序显然不需要的符号。所以在 这种情况下 deluge_disseminate 函数代码被优化远离 sky-shell-exec 可执行文件。显然,这与基本原则相冲突 程序员在无线情况下的直觉 编程。
要解决此问题,请在中添加对 deluge_disseminate 的引用 天空 shell 执行代码。例如,添加此行(在全局范围内): int (*keep)(void) = deluge_disseminate;
您还可以尝试调整 GCC 链接器选项或使用自定义链接器脚本。”
对 node_id_burn 也使用相同的技巧,test-deluge.c 运行。
已对上述代码进行更正。
希望这可以帮助那些可能在 Contiki 中与 OTA 代码作斗争的其他人。
关于c - 无线编程代码运行时丢失符号,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23903235/