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/LICENSE:
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1 | GNU GENERAL PUBLIC LICENSE
2 | Version 3, 29 June 2007
3 |
4 | Copyright (C) 2007 Free Software Foundation, Inc.
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # Android_SocketCAN
2 |
3 | 在Android平板上使用SocketCAN
4 |
5 | - [Android_SocketCAN](#android_socketcan)
6 | - [概要](#概要)
7 | - [adb 连接](#adb-连接)
8 | - [adb 常用操作](#adb-常用操作)
9 | - [CAN配置脚本](#can配置脚本)
10 | - [SocketCAN](#socketcan)
11 | - [JNI](#jni)
12 | - [JNI与SocketCAN](#jni与socketcan)
13 | - [Makefile](#makefile)
14 | - [jnican.java](#jnicanjava)
15 | - [生成的 jnican..h](#生成的-jnicanh)
16 | - [jnican.c](#jnicanc)
17 | - [运行](#运行)
18 | - [github jni can](#github-jni-can)
19 | - [NDK](#ndk)
20 | - [Android Studio](#android-studio)
21 | - [Android_SocketCAN 工程](#android_socketcan-工程)
22 | - [Apktool](#apktool)
23 | - [Github Android_SocketCAN](#github-android_socketcan)
24 |
25 | ## 概要
26 |
27 | 5年前的配置了:
28 |
29 | - MSM8953(骁龙625, 14nm, 8*Coretex-A53, 64bit, ARMv8-A, 2016年), 2+16GB
30 | - Android 7.1.x, Linux内核是3.18.x
31 | - 屏幕分辨率是常见的 1280*800
32 | - SOC没有CAN, 通过SPI外扩的两路CAN, MCP2515, 应用层上看还是SocketCAN. 这个Linux驱动其实挺不好整的, 特别是较老的内核和驱动, 连发丢帧的问题很明显
33 |
34 | ## adb 连接
35 |
36 | 操作:
37 |
38 | - 设置->关于手机->连点5下版本号->返回到开发者选项->开启USB调试. (可能不需要这个步骤)
39 | - 设置->更多->USB Host开关两次, 最后的状态是关
40 |
41 | 插拔USB, 就可以在 Win 的设备管理里面看到
42 |
43 | 
44 |
45 | 然后就可以在 wsl2 或者 powershell 中操作了
46 |
47 | ```bash
48 | # 配置环境变量就直接adb, 不配置就切换到adb目录, ./adb.exe
49 | adb version
50 | adb devices
51 | adb logcat
52 | adb shell
53 |
54 | # 如果出现 more than one device/emulator 错误
55 | # 如果只有一个模拟器和一个手机连着电脑:
56 | # 可以用adb -e 来指明是操作模拟器 Emulator
57 | # 可以用adb -d 来指明是操作设备 Device
58 | adb -d shell
59 | ```
60 |
61 | 参考:
62 |
63 | - [消除ADB错误“more than one device and emulator”的方法_杭州山不高的博客-CSDN博客](https://blog.csdn.net/gaojinshan/article/details/9455193)
64 |
65 | ## adb 常用操作
66 |
67 | ```bash
68 | # 似乎默认没有文本编辑, 在shell中编辑文件显得困难
69 | # 可以先拷出来, 编辑好后, 再推回去
70 | adb root
71 | adb remount
72 | adb pull
73 | 编辑...
74 | adb push
75 |
76 | # 很多Linux命令是可以直接用的, 命令大都在 `/system/bin` 里面
77 | # 因为很多权限没有, 索性直接root后再进shell
78 | adb root
79 | adb shell
80 |
81 | # 查看内存
82 | free -m
83 |
84 | # 查看分区
85 | df -H
86 |
87 | # 打印内核信息
88 | dmesg
89 |
90 | # 查看网络信息
91 | ifconfig
92 |
93 | ping www.baidu.com
94 | route -n
95 |
96 | # 很多应用可以交叉编译或使用aarch64的, 放到 /system/bin 里面
97 | ```
98 |
99 | ## CAN配置脚本
100 |
101 | 注意用于Android平板时开头是 `#!/system/bin/sh`, 不是Ubuntu中的`#!/bin/bash`, 脚本开机启动
102 |
103 | ```bash
104 | #!/system/bin/sh
105 |
106 | sleep 10
107 |
108 | ip link set down can0
109 | ip link set can0 type can bitrate 500000 sample-point 0.875 restart-ms 100
110 | ip link set up can0 mtu 16
111 | ifconfig can0 txqueuelen 1000
112 |
113 | ip link set down can1
114 | ip link set can1 type can bitrate 500000 sample-point 0.875 restart-ms 100
115 | ip link set up can1 mtu 16
116 | ifconfig can1 txqueuelen 1000
117 | ```
118 |
119 | 这些命令固然可以在C中用system方式运行, 但不建议, 毕竟这个算是系统的, 类似于eth, 各个进程都能用, 也为了方便调试, 最好不让一个进程独占或者开关.
120 |
121 | 检验
122 |
123 | ```bash
124 | adb shell
125 | ip -d -s link show can0
126 | ip -d -s link show can1
127 | ```
128 |
129 | can-util 工具仍然可以正常使用, 交叉编译后可以用adb推过去. 因为Android系统System分区启动之后只读, 在 adb shell 中也操作不了, 得 remount 重新挂载, 让分区可以读写
130 |
131 | ```bash
132 | adb root
133 | adb remount
134 | adb push ./can-utils/* /system/bin
135 |
136 | # 能正常用 cansend candump 等
137 | # 看一下文件属性, aarch64 的
138 | $ file candump
139 | candump: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /system/bin/linker64, BuildID[md5/uuid]=0d1aef349ebef83063daf944914887b4, stripped
140 | ```
141 |
142 | ## SocketCAN
143 |
144 | 这个底层C和Linux没啥差别, 直接参考Linux内核文档即可
145 |
146 | [SocketCAN - Controller Area Network — The Linux Kernel documentation](https://www.kernel.org/doc/html/latest/networking/can.html)
147 |
148 | `socket - ioctl - bind - read - write`, 不设置滤波器, 可以取消loopback, 设置读写的超时时间等.
149 |
150 | 正常 adb shell 中 用 `cansend candump` 收发没问题, 那`socketcan`用起来就没问题, 如果发现有连发(收)丢帧(比如连发4帧丢1帧), 应用层也无能为力, 得去查Linux MCP2515的驱动.
151 |
152 | ## JNI
153 |
154 | 底层SocketCAN是C, 所以需要JNI. 之前的Android开发用的Java(现在很多Kotlin了).
155 |
156 | JNI, Java Native Interface, 是JDK在JVM中运行的字节码和本机代码(通常用C或C++编写)之间引入的一个桥梁. 简言之:
157 |
158 | - C/C++编写的代码包含 `jni.h` 头文件, 使用里面定义的一些元素(JNIEXPORT, JNICALL, JNIEnv, j开头的基本数据类型等)包裹C/C++代码
159 | - 使用 gcc/g++/cmake 等把C/C++代码编译成库(如共享库.so文件)
160 | - Java使用 `native关键字`, `System.loadLibrary(String libname)方法` 加载库
161 |
162 | 当然很多时候是反着来的:
163 |
164 | - 写一个java接口文件, 用 `javac -h . xx.java` 生成 `xx.h`头文件
165 | - 实现 `xx.c` 文件, ~~俗称 Native 层~~
166 | - 编译出 .so 文件
167 | - 运行 `java -Djava.library.path=. xx`
168 |
169 | JNI当然不止用在Android平台, 用Java开发程序的地方都可以用到. 如在通用的Linux开发中.
170 |
171 | 单纯在Linux中测试JNI的时候, 可能找不到`JAVA_HOME`应该指定的路径(也就是jni.h所在的位置), 参考链接给出一种方法
172 |
173 | ```bash
174 | $ which java
175 | /usr/bin/java
176 | $ ls -lrt /usr/bin/java
177 | lrwxrwxrwx 1 root root 22 Jun 21 17:47 /usr/bin/java -> /etc/alternatives/java
178 | $ ls -lrt /etc/alternatives/java
179 | lrwxrwxrwx 1 root root 43 Jun 21 17:47 /etc/alternatives/java -> /usr/lib/jvm/java-11-openjdk-amd64/bin/java
180 | # 然后就可以
181 | $ export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
182 |
183 | # 参考链接中的例子
184 | # 编写一个使用 C 代码的 Java 类 HelloJNI.java
185 | vi HelloJNI.java
186 | # 编译Java程序HelloJNI.java并生成C / C++头文件HelloJNI.h
187 | javac -h . HelloJNI.java
188 | # 实现 C 程序 HelloJNI.c
189 | vi HelloJNI.c
190 | # 编译 C 程序 HelloJNI.c 生成 .so 文件
191 | export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
192 | gcc -fPIC -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/linux" -shared -o libhello.so HelloJNI.c
193 | # 运行Java程序
194 | java -Djava.library.path=. HelloJNI
195 | ```
196 |
197 | 参考:
198 |
199 | - [Java 本机接口规范内容 (oracle.com)](https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/jniTOC.html), 这个文档好好读读基本没啥大问题了
200 | - [Guide to JNI (Java Native Interface) | Baeldung](https://www.baeldung.com/jni)
201 | - [JNI APIs and Developer Guides (oracle.com)](https://docs.oracle.com/javase/8/docs/technotes/guides/jni/)
202 | - [Java Native Interface (JNI) - Java Programming Tutorial (ntu.edu.sg)](https://www3.ntu.edu.sg/home/ehchua/programming/java/JavaNativeInterface.html)
203 | - [linux查看openjdk的安装的路径(环境变量)_能白话的程序员♫的博客-CSDN](https://blog.csdn.net/zhangxiaohui4445/article/details/86626517?spm=1001.2101.3001.6661.1&utm_medium=distribute.pc_relevant_t0.none-task-blog-2~default~CTRLIST~default-1-86626517-blog-116727800.pc_relevant_multi_platform_whitelistv1&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2~default~CTRLIST~default-1-86626517-blog-116727800.pc_relevant_multi_platform_whitelistv1&utm_relevant_index=1)
204 | - [JNIEnv的使用在C和C++中的区别_双刃剑客的博客-CSDN博客](https://blog.csdn.net/zhangmiaoping23/article/details/103855018?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~default-1-103855018-blog-79916618.pc_relevant_aa&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~default-1-103855018-blog-79916618.pc_relevant_aa&utm_relevant_index=2)
205 |
206 | ## JNI与SocketCAN
207 |
208 | 在Ubuntu下的框架演示, Android下的使用参考最后面的 Android_SocketCAN 工程
209 |
210 | ### Makefile
211 |
212 | ```bash
213 | header:
214 | javac -h . jnican.java
215 |
216 | so:
217 | export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64;
218 | gcc -fPIC -I"${JAVA_HOME}/include" -I"${JAVA_HOME}/include/linux" -shared -o libjnican.so jnican.c
219 |
220 | run:
221 | java -Djava.library.path=. jnican
222 | ```
223 |
224 | ### jnican.java
225 |
226 | ```java
227 | public class jnican {
228 | static {
229 | System.loadLibrary("jnican");
230 | }
231 |
232 | public native int socketcan_open(int channel); //return handle
233 | public native int socketcan_write(int handle, long canid, int dlc, byte[] buf, int ext, int rtr);
234 | public native byte[] socketcan_read(int handle); //obtain id.eff.rtr.dlc.data in byte[]
235 | public native int socketcan_close(int channel);
236 |
237 | // 测试代码
238 | public static void main(String[] args) {
239 | jnican can0 = new jnican();
240 | int s0 = can0.socketcan_open(0);
241 |
242 | byte[] buf = new byte[8];
243 | buf[0] = (byte)0xAF;
244 | can0.socketcan_write(s0, 0x123, 8, buf, 0, 0);
245 |
246 | //接收测试, 阻塞式的, 可以单开线程
247 | byte[] rbuf = new byte[13];
248 | rbuf = can0.socketcan_read(s0);
249 | long rid = rbuf[0] |
250 | (rbuf[1] << 8) |
251 | (rbuf[2] << 16) |
252 | ((rbuf[3] & 0x1F) << 24);
253 | int rdlc = rbuf[4];
254 | String ext = ((rbuf[3] & 0x80) == 0x80)?"E":"S";
255 | System.out.println("read: "+
256 | Long.toHexString(rid) + " " +
257 | rdlc + " " +
258 | ext);
259 |
260 | can0.socketcan_close(s0);
261 | }
262 | }
263 | ```
264 |
265 | 生成.h文件
266 |
267 | ```bash
268 | make header
269 | # javac -h . jnican.java
270 | # 生成 jnican.h jnican.class
271 | ```
272 |
273 | ### 生成的 jnican..h
274 |
275 | ```bash
276 | /* DO NOT EDIT THIS FILE - it is machine generated */
277 | #include
278 | /* Header for class jnican */
279 |
280 | #ifndef _Included_jnican
281 | #define _Included_jnican
282 | #ifdef __cplusplus
283 | extern "C" {
284 | #endif
285 | /*
286 | * Class: jnican
287 | * Method: socketcan_open
288 | * Signature: (I)I
289 | */
290 | JNIEXPORT jint JNICALL Java_jnican_socketcan_1open
291 | (JNIEnv *, jobject, jint);
292 |
293 | /*
294 | * Class: jnican
295 | * Method: socketcan_write
296 | * Signature: (IJI[BII)I
297 | */
298 | JNIEXPORT jint JNICALL Java_jnican_socketcan_1write
299 | (JNIEnv *, jobject, jint, jlong, jint, jbyteArray, jint, jint);
300 |
301 | /*
302 | * Class: jnican
303 | * Method: socketcan_read
304 | * Signature: (I)[B
305 | */
306 | JNIEXPORT jbyteArray JNICALL Java_jnican_socketcan_1read
307 | (JNIEnv *, jobject, jint);
308 |
309 | /*
310 | * Class: jnican
311 | * Method: socketcan_close
312 | * Signature: (I)I
313 | */
314 | JNIEXPORT jint JNICALL Java_jnican_socketcan_1close
315 | (JNIEnv *, jobject, jint);
316 |
317 | #ifdef __cplusplus
318 | }
319 | #endif
320 | #endif
321 |
322 | ```
323 |
324 | ### jnican.c
325 |
326 | socketcan的代码这里就不填充了, 只做演示
327 |
328 | ```c
329 | #include "jnican.h"
330 | #include
331 | #include
332 |
333 | JNIEXPORT jint JNICALL Java_jnican_socketcan_1open
334 | (JNIEnv *env, jobject obj, jint channel)
335 | {
336 | printf("socketcan open code put here...\n");
337 | return 0;
338 | }
339 |
340 | JNIEXPORT jint JNICALL Java_jnican_socketcan_1write
341 | (JNIEnv *env, jobject obj, jint handle, jlong canid, jint dlc, jbyteArray buf, jint ext, jint rtr)
342 | {
343 | printf("socketcan write code put here...\n");
344 | uint8_t *data = (uint8_t *)((*env)->GetByteArrayElements(env, buf, 0));
345 | printf("socketcan write: %X, %d, %c, %02X\n", (uint32_t)canid, dlc, (ext==1)?'E':'S', data[0]);
346 | (*env)->ReleaseByteArrayElements(env, buf, (jbyte *)data, 0);
347 | return 0;
348 | }
349 |
350 | JNIEXPORT jbyteArray JNICALL Java_jnican_socketcan_1read
351 | (JNIEnv *env, jobject obj, jint handle)
352 | {
353 | // read, recvfrom, epoll 等方式
354 | printf("socketcan read code put here...\n");
355 | jbyteArray ret;
356 | ret = (*env)->NewIntArray(env, 13);
357 | uint8_t data[13] = {0x78, 0x56, 0x34, 0x92, 8, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};
358 | (*env)->SetIntArrayRegion(env, ret, 0, 13, (jint *)data);
359 | return ret;
360 | }
361 |
362 | JNIEXPORT jint JNICALL Java_jnican_socketcan_1close
363 | (JNIEnv *env, jobject obj, jint handle)
364 | {
365 | printf("socketcan close code put here...\n");
366 | return 0;
367 | }
368 | ```
369 |
370 | 编译成.so共享库
371 |
372 | ```bash
373 | make so
374 | # 生成 libjnican.so
375 | # 默认 .so 使用去掉前缀lib
376 | # java 中 System.loadLibrary("jnican");
377 | ```
378 |
379 | 注意代码中 C 和 C++ 的实现是不一样的
380 |
381 | ```c
382 | //c
383 | uint8_t *data = (uint8_t *)((*env)->GetByteArrayElements(env, buf, 0));
384 |
385 | //cpp
386 | uint8_t *data = (uint8_t *)(env->GetByteArrayElements(buf, 0));
387 | ```
388 |
389 | 参考: [Android Studio下JNI开发的基本步骤 - 掘金 (juejin.cn)](https://juejin.cn/post/7001316664046272525), 引用:
390 |
391 | > 在C语言中,JNIEnv是指向JNINativeInterface结构的指针,使用它必须要解引用。而第一个参数还是env,学过C和C++语言都知道,C语言是面向过程语言,NewStringUTF只是一个函数指针,调用该方法还不清楚调用者,所以要传递env,而C++就不用,因为C++是面向对象语言,这个就不解释咯
392 |
393 | ### 运行
394 |
395 | ```bash
396 | $ make run
397 | java -Djava.library.path=. jnican
398 | socketcan open code put here
399 | socketcan write code put here...
400 | socketcan write: 123, 8, S, AF
401 | socketcan read code put here...
402 | read: 12345678 8 E
403 | socketcan close code put here
404 | ```
405 |
406 | ### github jni can
407 |
408 | 自己写问题不大, 去github扒参考也不错:
409 |
410 | - [linux-can/can-utils: Linux-CAN / SocketCAN user space applications (github.com)](https://github.com/linux-can/can-utils), cansend, candump等的实现都在这里, 没有什么比参考标准实现更快的了
411 | - [MaskingM](https://github.com/MaskingM)/**[SocketCan](https://github.com/MaskingM/SocketCan)**, 这个是Github一个开源的实现, 可以参考. 里面的`CANFrame.java`中CAN数据接收的注释: `数据会反射到此处,在此处添加程序数据处理功能`
412 | - [pschichtel/JavaCAN: A simple JNI wrapper for the socketcan API provided by the Linux kernel. As it is wrapping a Linux Kernel API, it is intended for use on Linux only. (github.com)](https://github.com/pschichtel/JavaCAN), 仅用于Linux, 不过支持的很好, can, canfd, CAN_RAW, CAN_BCM, CAN_ISOTP, 平台也挺多的 arm, x86, riscv等, 较新的平台或内核可以参考这个
413 | - [ZengjfOS/SocketCanJNI: 尝试将libsocket-can-java移植到Android上的,里面对libsocket-can-java添加了注释,发现该库还需要加强。 (github.com)](https://github.com/ZengjfOS/SocketCanJNI)
414 |
415 | ## NDK
416 |
417 | NDK: Native Development Kit, 原生开发套件. 简言之, 在 Android 应用中使用 C 和 C++ 代码, 想把JNI用起来, 就需要NDK.
418 |
419 | > 可以在 [Android Studio 2.2 或更高版本](https://developer.android.google.cn/studio) 中使用 NDK 将 C 和 C++ 代码编译到原生库中,然后使用 Android Studio 的集成构建系统 Gradle 将原生库打包到 APK 中.
420 |
421 | > Android Studio 编译原生库的默认构建工具是 [CMake](https://cmake.org/)。由于很多现有项目都使用 ndk-build 构建工具包,因此 Android Studio 也支持 [ndk-build](https://developer.android.google.cn/ndk/guides/ndk-build)。不过,如果您要创建新的原生库,则应使用 CMake。
422 |
423 | 
424 |
425 | Android Studio 中可以直接安装 NDK 和 CMake, 下面会有介绍.
426 |
427 | 参考
428 |
429 | - [NDK 使用入门 | Android NDK | Android Developers (google.cn)](https://developer.android.google.cn/ndk/guides/)
430 | - [android/ndk-samples: Android NDK samples with Android Studio (github.com)](https://github.com/android/ndk-samples)
431 | - [什么是安卓系统中的NDK?- 极客极客 (geeksforgeeks.org)](https://www.geeksforgeeks.org/what-is-ndk-in-android/)
432 |
433 | ## Android Studio
434 |
435 | 虽然是google的, 国内不翻也能正常用:
436 |
437 | [探索 Android Studio | Android 开发者 | Android Developers (google.cn)](https://developer.android.google.cn/studio/intro)
438 |
439 | 装的这个版本 [android-studio-2021.2.1.15-windows.exe](https://redirector.gvt1.com/edgedl/android/studio/install/2021.2.1.15/android-studio-2021.2.1.15-windows.exe)
440 |
441 | ## Android_SocketCAN 工程
442 |
443 | 以下面这个版本为例
444 |
445 | 
446 |
447 | File -> New -> New Project, 选择 Phone and Tablet -> Empty Activity
448 |
449 | 
450 |
451 | 语言选择Java
452 |
453 | 
454 |
455 | 点击 SDK Manager 安装 NDK 和 CMake
456 |
457 | 
458 |
459 | app右键选择 `Add C++ to Module`
460 |
461 | 
462 |
463 | 
464 |
465 | 添加一个新的 java class: android_socketcan
466 |
467 | 
468 |
469 | 把接口填进去:
470 |
471 | - eff 指标准帧(0)还是扩展帧(0), 是 struct can_frame 的 can_id 的 31位
472 | - rtr 指远程帧是 struct can_frame 的 can_id 的30位
473 | - canid 是 struct can_frame 的 can_id 的低29位(0x0~0x1FFFFFFF)
474 | - 读接口直接返回一个long数组`0:id, 1:eff, 2:rtr, 3:len, 4~11:data`
475 | - 感觉 java 和 kotlin 的数据类型有些残缺, 无符号的支持不好, 这里往大了扩, 免得来回转麻烦, 这一点 swift 就有 UInt8 UInt32 UInt64, 让使用者不至于那么难受.
476 |
477 | ```java
478 | // android_socketcan.java
479 | package com.example.android_socketcan;
480 |
481 | public class android_socketcan {
482 | static {
483 | System.loadLibrary("android_socketcan");
484 | }
485 | public int fd;
486 | public native int socketcanOpen(String canx); //return fd
487 | public native int socketcanClose(int fd); //return 0 is success
488 | public native int socketcanWrite(int fd, long canid, long eff, long rtr, int len, int[] data);
489 | public native long[] socketcanRead(int fd);
490 | }
491 |
492 | ```
493 |
494 | 鼠标悬停红色文字, 弹窗点 `Creat JNI function for `
495 |
496 | 
497 |
498 | 依次点击这4个接口, 就可以在cpp中自动生成接口代码, `jni.h` 也包含好了
499 |
500 | 
501 |
502 | 接着把 SocketCAN的C代码填进去, 整个文件如下
503 |
504 | ```bash
505 | // android_socketcan.cpp
506 | #include
507 |
508 | #include
509 | #include
510 | #include
511 | #include
512 | #include
513 | #include
514 | #include
515 | #include
516 | #include
517 | #include
518 |
519 | extern "C"
520 | JNIEXPORT jint JNICALL
521 | Java_com_example_android_1socketcan_android_1socketcan_socketcanOpen(JNIEnv *env, jobject thiz,
522 | jstring canx) {
523 | // TODO: implement socketcanOpen()
524 | int fd;
525 | struct ifreq ifr;
526 | struct sockaddr_can addr;
527 |
528 | /* open socket */
529 | if ((fd = socket(PF_CAN, SOCK_RAW, CAN_RAW)) < 0) {
530 | return -1;
531 | }
532 |
533 | const char *str = env->GetStringUTFChars(canx, 0);
534 | strcpy(ifr.ifr_name, str);
535 | ioctl(fd, SIOCGIFINDEX, &ifr);
536 |
537 | memset(&addr, 0, sizeof(addr));
538 | addr.can_family = AF_CAN;
539 | addr.can_ifindex = ifr.ifr_ifindex;
540 |
541 | if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
542 | return -2;
543 | }
544 |
545 | return fd;
546 | }
547 |
548 | extern "C"
549 | JNIEXPORT jint JNICALL
550 | Java_com_example_android_1socketcan_android_1socketcan_socketcanClose(JNIEnv *env, jobject thiz,
551 | jint fd) {
552 | // TODO: implement socketcanClose()
553 | return close(fd);
554 | }
555 |
556 | extern "C"
557 | JNIEXPORT jint JNICALL
558 | Java_com_example_android_1socketcan_android_1socketcan_socketcanWrite(JNIEnv *env, jobject thiz,
559 | jint fd, jlong canid,
560 | jlong eff, jlong rtr,
561 | jint len, jintArray data) {
562 | // TODO: implement socketcanWrite()
563 | struct can_frame frame;
564 | frame.can_id = (eff << 31) | (rtr << 30) | canid;
565 | frame.can_dlc = len;
566 | jint *pdata = env->GetIntArrayElements(data, 0);
567 | for(uint8_t i = 0; i < len; i++) {
568 | frame.data[i] = pdata[i] & 0xFF;
569 | }
570 | int ret = write(fd, &frame, sizeof(struct can_frame));
571 | env->ReleaseIntArrayElements(data, pdata, 0);
572 | return ret;
573 | }
574 |
575 | extern "C"
576 | JNIEXPORT jlongArray JNICALL
577 | Java_com_example_android_1socketcan_android_1socketcan_socketcanRead(JNIEnv *env, jobject thiz,
578 | jint fd) {
579 | // TODO: implement socketcanRead()
580 | jlongArray ret;
581 | ret = env->NewLongArray(12);
582 | struct can_frame frame;
583 | read(fd, &frame, sizeof(struct can_frame));
584 | int64_t data[12];
585 | data[0] = frame.can_id & 0x1FFFFFFF;
586 | data[1] = (frame.can_id >> 31) & 0x1;
587 | data[2] = (frame.can_id >> 30) & 0x1;
588 | data[3] = frame.can_dlc;
589 | for(uint8_t i = 0; i < frame.can_dlc; i++) {
590 | data[i + 4] = frame.data[i];
591 | }
592 | env->SetLongArrayRegion(ret, 0, 12, data);
593 | return ret;
594 | }
595 | ```
596 |
597 | 给默认的TextView添加一个id, 还有 maxLines属性设为10
598 |
599 | 
600 |
601 | 在MainActivity里面用can0测试一下
602 |
603 | ```java
604 | package com.example.android_socketcan;
605 |
606 | import androidx.appcompat.app.AppCompatActivity;
607 |
608 | import android.os.Bundle;
609 | import android.text.method.ScrollingMovementMethod;
610 | import android.widget.TextView;
611 |
612 | import java.util.Arrays;
613 |
614 | public class MainActivity extends AppCompatActivity {
615 |
616 | android_socketcan can0;
617 | TextView tv;
618 |
619 | @Override
620 | protected void onCreate(Bundle savedInstanceState) {
621 | super.onCreate(savedInstanceState);
622 | setContentView(R.layout.activity_main);
623 |
624 | tv = findViewById(R.id.textview0);
625 | tv.setMovementMethod(ScrollingMovementMethod.getInstance());
626 |
627 | can0 = new android_socketcan();
628 | can0.fd = can0.socketcanOpen("can0");
629 |
630 | //send
631 | new Thread() {
632 | int[] data = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7};
633 | @Override
634 | public void run() {
635 | while (true) {
636 | try {
637 | sleep(1000);
638 | } catch (InterruptedException e) {
639 | e.printStackTrace();
640 | }
641 | data[0] = (data[0] + 1) % 0xFF;
642 | can0.socketcanWrite(can0.fd, 0x123, 0, 0, 8, data);
643 | }
644 | }
645 | }.start();
646 |
647 | //receive
648 | new Thread() {
649 | long[] ret = new long[12];
650 | @Override
651 | public void run() {
652 | while (true) {
653 | ret = can0.socketcanRead(can0.fd);
654 | long can0id = ret[0];
655 | long can0eff = ret[1];
656 | long can0rtr = ret[2];
657 | long can0len = ret[3];
658 | long[] can0data = Arrays.copyOfRange(ret, 4, (int) (4+can0len));
659 | runOnUiThread(new Runnable() {
660 | @Override
661 | public void run() {
662 | //can0 RX E R 123 [8] CF A1 A2 A3 A4 A5 A6 A7
663 | String str = "can0 RX ";
664 | str += (can0eff==0) ? "S " : "E ";
665 | str += (can0rtr==0) ? "- " : "R ";
666 | String strid = Long.toHexString(can0id);
667 | if(can0eff == 0) {
668 | for(int i=0; i<3-strid.length(); i++) {
669 | strid = '0' + strid;
670 | }
671 | } else {
672 | for(int i=0; i<8-strid.length(); i++) {
673 | strid = '0' + strid;
674 | }
675 | }
676 | str = str + strid + " [" + Long.toString(can0len) + "] ";
677 | for(int i=0; i 1000) {
686 | tv.setText("");
687 | }
688 | tv.append(str);
689 | int offset = tv.getLineCount() * tv.getLineHeight();
690 | if(offset > tv.getHeight()) {
691 | tv.scrollTo(0, offset - tv.getHeight());
692 | }
693 | }
694 | });
695 | }
696 | }
697 | }.start();
698 |
699 | }
700 | }
701 | ```
702 |
703 | 连接Android平板的CAN0到周立功CAN分析仪的CAN0, 运行APP:
704 |
705 | - 平板每秒发出0x123的标准帧, 第0字节递增
706 | - 平板接收CAN分析仪发出的标准帧和扩展帧, 显示在屏幕正中间
707 |
708 | 
709 |
710 | 
711 |
712 | ## Apktool
713 |
714 | [Apktool - A tool for reverse engineering 3rd party, closed, binary Android apps. (ibotpeaches.github.io)](https://ibotpeaches.github.io/Apktool/)
715 |
716 | 使用Apktool查看下APK到底有没有打包.so
717 |
718 | ```bash
719 | # APK路径
720 | # Android_SocketCAN\app\build\outputs\apk\debug\app-debug.apk
721 |
722 | .\apktool_2.6.1.jar d .\app-debug.apk
723 | ```
724 |
725 | 发现把所有平台的 .so 打包进去了
726 |
727 | 
728 |
729 | ## Github [Android_SocketCAN](https://github.com/weifengdq/Android_SocketCAN)
730 |
731 | [weifengdq/Android_SocketCAN: 在Android平板上使用SocketCAN (github.com)](https://github.com/weifengdq/Android_SocketCAN)
732 |
--------------------------------------------------------------------------------
/app/.gitignore:
--------------------------------------------------------------------------------
1 | /build
--------------------------------------------------------------------------------
/app/build.gradle:
--------------------------------------------------------------------------------
1 | plugins {
2 | id 'com.android.application'
3 | }
4 |
5 | android {
6 | compileSdk 32
7 |
8 | defaultConfig {
9 | applicationId "com.example.android_socketcan"
10 | minSdk 25
11 | targetSdk 32
12 | versionCode 1
13 | versionName "1.0"
14 |
15 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
16 | externalNativeBuild {
17 | cmake {
18 | cppFlags ''
19 | }
20 | }
21 | }
22 |
23 | buildTypes {
24 | release {
25 | minifyEnabled false
26 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
27 | }
28 | }
29 | compileOptions {
30 | sourceCompatibility JavaVersion.VERSION_1_8
31 | targetCompatibility JavaVersion.VERSION_1_8
32 | }
33 | externalNativeBuild {
34 | cmake {
35 | path file('src/main/cpp/CMakeLists.txt')
36 | version '3.18.1'
37 | }
38 | }
39 | }
40 |
41 | dependencies {
42 |
43 | implementation 'androidx.appcompat:appcompat:1.3.0'
44 | implementation 'com.google.android.material:material:1.4.0'
45 | implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
46 | testImplementation 'junit:junit:4.13.2'
47 | androidTestImplementation 'androidx.test.ext:junit:1.1.3'
48 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
49 | }
--------------------------------------------------------------------------------
/app/proguard-rules.pro:
--------------------------------------------------------------------------------
1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
--------------------------------------------------------------------------------
/app/src/androidTest/java/com/example/android_socketcan/ExampleInstrumentedTest.java:
--------------------------------------------------------------------------------
1 | package com.example.android_socketcan;
2 |
3 | import android.content.Context;
4 |
5 | import androidx.test.platform.app.InstrumentationRegistry;
6 | import androidx.test.ext.junit.runners.AndroidJUnit4;
7 |
8 | import org.junit.Test;
9 | import org.junit.runner.RunWith;
10 |
11 | import static org.junit.Assert.*;
12 |
13 | /**
14 | * Instrumented test, which will execute on an Android device.
15 | *
16 | * @see Testing documentation
17 | */
18 | @RunWith(AndroidJUnit4.class)
19 | public class ExampleInstrumentedTest {
20 | @Test
21 | public void useAppContext() {
22 | // Context of the app under test.
23 | Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
24 | assertEquals("com.example.android_socketcan", appContext.getPackageName());
25 | }
26 | }
--------------------------------------------------------------------------------
/app/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
1 |
2 |
5 |
6 |
16 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
--------------------------------------------------------------------------------
/app/src/main/cpp/CMakeLists.txt:
--------------------------------------------------------------------------------
1 |
2 | # For more information about using CMake with Android Studio, read the
3 | # documentation: https://d.android.com/studio/projects/add-native-code.html
4 |
5 | # Sets the minimum version of CMake required to build the native library.
6 |
7 | cmake_minimum_required(VERSION 3.18.1)
8 |
9 | # Declares and names the project.
10 |
11 | project("android_socketcan")
12 |
13 | # Creates and names a library, sets it as either STATIC
14 | # or SHARED, and provides the relative paths to its source code.
15 | # You can define multiple libraries, and CMake builds them for you.
16 | # Gradle automatically packages shared libraries with your APK.
17 |
18 | add_library( # Sets the name of the library.
19 | android_socketcan
20 |
21 | # Sets the library as a shared library.
22 | SHARED
23 |
24 | # Provides a relative path to your source file(s).
25 | android_socketcan.cpp )
26 |
27 | # Searches for a specified prebuilt library and stores the path as a
28 | # variable. Because CMake includes system libraries in the search path by
29 | # default, you only need to specify the name of the public NDK library
30 | # you want to add. CMake verifies that the library exists before
31 | # completing its build.
32 |
33 | find_library( # Sets the name of the path variable.
34 | log-lib
35 |
36 | # Specifies the name of the NDK library that
37 | # you want CMake to locate.
38 | log )
39 |
40 | # Specifies libraries CMake should link to your target library. You
41 | # can link multiple libraries, such as libraries you define in this
42 | # build script, prebuilt third-party libraries, or system libraries.
43 |
44 | target_link_libraries( # Specifies the target library.
45 | android_socketcan
46 |
47 | # Links the target library to the log library
48 | # included in the NDK.
49 | ${log-lib} )
50 |
--------------------------------------------------------------------------------
/app/src/main/cpp/android_socketcan.cpp:
--------------------------------------------------------------------------------
1 | #include
2 |
3 | #include
4 | #include
5 | #include
6 | #include
7 | #include
8 | #include
9 | #include
10 | #include
11 | #include
12 | #include
13 |
14 | extern "C"
15 | JNIEXPORT jint JNICALL
16 | Java_com_example_android_1socketcan_android_1socketcan_socketcanOpen(JNIEnv *env, jobject thiz,
17 | jstring canx) {
18 | // TODO: implement socketcanOpen()
19 | int fd;
20 | struct ifreq ifr;
21 | struct sockaddr_can addr;
22 |
23 | /* open socket */
24 | if ((fd = socket(PF_CAN, SOCK_RAW, CAN_RAW)) < 0) {
25 | return -1;
26 | }
27 |
28 | const char *str = env->GetStringUTFChars(canx, 0);
29 | strcpy(ifr.ifr_name, str);
30 | ioctl(fd, SIOCGIFINDEX, &ifr);
31 |
32 | memset(&addr, 0, sizeof(addr));
33 | addr.can_family = AF_CAN;
34 | addr.can_ifindex = ifr.ifr_ifindex;
35 |
36 | if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
37 | return -2;
38 | }
39 |
40 | return fd;
41 | }
42 |
43 | extern "C"
44 | JNIEXPORT jint JNICALL
45 | Java_com_example_android_1socketcan_android_1socketcan_socketcanClose(JNIEnv *env, jobject thiz,
46 | jint fd) {
47 | // TODO: implement socketcanClose()
48 | return close(fd);
49 | }
50 |
51 | extern "C"
52 | JNIEXPORT jint JNICALL
53 | Java_com_example_android_1socketcan_android_1socketcan_socketcanWrite(JNIEnv *env, jobject thiz,
54 | jint fd, jlong canid,
55 | jlong eff, jlong rtr,
56 | jint len, jintArray data) {
57 | // TODO: implement socketcanWrite()
58 | struct can_frame frame;
59 | frame.can_id = (eff << 31) | (rtr << 30) | canid;
60 | frame.can_dlc = len;
61 | jint *pdata = env->GetIntArrayElements(data, 0);
62 | for(uint8_t i = 0; i < len; i++) {
63 | frame.data[i] = pdata[i] & 0xFF;
64 | }
65 | int ret = write(fd, &frame, sizeof(struct can_frame));
66 | env->ReleaseIntArrayElements(data, pdata, 0);
67 | return ret;
68 | }
69 |
70 | extern "C"
71 | JNIEXPORT jlongArray JNICALL
72 | Java_com_example_android_1socketcan_android_1socketcan_socketcanRead(JNIEnv *env, jobject thiz,
73 | jint fd) {
74 | // TODO: implement socketcanRead()
75 | jlongArray ret;
76 | ret = env->NewLongArray(12);
77 | struct can_frame frame;
78 | read(fd, &frame, sizeof(struct can_frame));
79 | int64_t data[12];
80 | data[0] = frame.can_id & 0x1FFFFFFF;
81 | data[1] = (frame.can_id >> 31) & 0x1;
82 | data[2] = (frame.can_id >> 30) & 0x1;
83 | data[3] = frame.can_dlc;
84 | for(uint8_t i = 0; i < frame.can_dlc; i++) {
85 | data[i + 4] = frame.data[i];
86 | }
87 | env->SetLongArrayRegion(ret, 0, 12, data);
88 | return ret;
89 | }
--------------------------------------------------------------------------------
/app/src/main/java/com/example/android_socketcan/MainActivity.java:
--------------------------------------------------------------------------------
1 | package com.example.android_socketcan;
2 |
3 | import androidx.appcompat.app.AppCompatActivity;
4 |
5 | import android.os.Bundle;
6 | import android.text.method.ScrollingMovementMethod;
7 | import android.widget.TextView;
8 |
9 | import java.util.Arrays;
10 |
11 | public class MainActivity extends AppCompatActivity {
12 |
13 | android_socketcan can0;
14 | TextView tv;
15 |
16 | @Override
17 | protected void onCreate(Bundle savedInstanceState) {
18 | super.onCreate(savedInstanceState);
19 | setContentView(R.layout.activity_main);
20 |
21 | tv = findViewById(R.id.textview0);
22 | tv.setMovementMethod(ScrollingMovementMethod.getInstance());
23 |
24 | can0 = new android_socketcan();
25 | can0.fd = can0.socketcanOpen("can0");
26 |
27 | //send
28 | new Thread() {
29 | int[] data = {0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7};
30 | @Override
31 | public void run() {
32 | while (true) {
33 | try {
34 | sleep(1000);
35 | } catch (InterruptedException e) {
36 | e.printStackTrace();
37 | }
38 | data[0] = (data[0] + 1) % 0xFF;
39 | can0.socketcanWrite(can0.fd, 0x123, 0, 0, 8, data);
40 | }
41 | }
42 | }.start();
43 |
44 | //receive
45 | new Thread() {
46 | long[] ret = new long[12];
47 | @Override
48 | public void run() {
49 | while (true) {
50 | ret = can0.socketcanRead(can0.fd);
51 | long can0id = ret[0];
52 | long can0eff = ret[1];
53 | long can0rtr = ret[2];
54 | long can0len = ret[3];
55 | long[] can0data = Arrays.copyOfRange(ret, 4, (int) (4+can0len));
56 | runOnUiThread(new Runnable() {
57 | @Override
58 | public void run() {
59 | //can0 RX E R 123 [8] CF A1 A2 A3 A4 A5 A6 A7
60 | String str = "can0 RX ";
61 | str += (can0eff==0) ? "S " : "E ";
62 | str += (can0rtr==0) ? "- " : "R ";
63 | String strid = Long.toHexString(can0id);
64 | if(can0eff == 0) {
65 | for(int i=0; i<3-strid.length(); i++) {
66 | strid = '0' + strid;
67 | }
68 | } else {
69 | for(int i=0; i<8-strid.length(); i++) {
70 | strid = '0' + strid;
71 | }
72 | }
73 | str = str + strid + " [" + Long.toString(can0len) + "] ";
74 | for(int i=0; i 1000) {
83 | tv.setText("");
84 | }
85 | tv.append(str);
86 | int offset = tv.getLineCount() * tv.getLineHeight();
87 | if(offset > tv.getHeight()) {
88 | tv.scrollTo(0, offset - tv.getHeight());
89 | }
90 | }
91 | });
92 | }
93 | }
94 | }.start();
95 |
96 | }
97 | }
--------------------------------------------------------------------------------
/app/src/main/java/com/example/android_socketcan/android_socketcan.java:
--------------------------------------------------------------------------------
1 | package com.example.android_socketcan;
2 |
3 | public class android_socketcan {
4 | static {
5 | System.loadLibrary("android_socketcan");
6 | }
7 |
8 | public int fd;
9 |
10 | public native int socketcanOpen(String canx); //return fd
11 | public native int socketcanClose(int fd); //return 0 is success
12 | public native int socketcanWrite(int fd, long canid, long eff, long rtr, int len, int[] data);
13 | public native long[] socketcanRead(int fd);
14 | }
15 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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/app/src/main/res/drawable/ic_launcher_background.xml:
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/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml:
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/app/src/main/res/mipmap-hdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp:
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/app/src/main/res/values-night/themes.xml:
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1 |
2 |
3 |
16 |
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/app/src/main/res/values/colors.xml:
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1 |
2 |
3 | #FFBB86FC
4 | #FF6200EE
5 | #FF3700B3
6 | #FF03DAC5
7 | #FF018786
8 | #FF000000
9 | #FFFFFFFF
10 |
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/app/src/main/res/values/strings.xml:
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1 |
2 | Android_SocketCAN
3 |
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/app/src/main/res/values/themes.xml:
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1 |
2 |
3 |
16 |
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/app/src/main/res/xml/backup_rules.xml:
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1 |
8 |
9 |
13 |
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/app/src/main/res/xml/data_extraction_rules.xml:
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1 |
6 |
7 |
8 |
12 |
13 |
19 |
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/app/src/test/java/com/example/android_socketcan/ExampleUnitTest.java:
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1 | package com.example.android_socketcan;
2 |
3 | import org.junit.Test;
4 |
5 | import static org.junit.Assert.*;
6 |
7 | /**
8 | * Example local unit test, which will execute on the development machine (host).
9 | *
10 | * @see Testing documentation
11 | */
12 | public class ExampleUnitTest {
13 | @Test
14 | public void addition_isCorrect() {
15 | assertEquals(4, 2 + 2);
16 | }
17 | }
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/assets/NDK.png:
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/assets/image-20220629165600631.png:
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/assets/image-20220630132610524.png:
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/build.gradle:
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1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
2 | plugins {
3 | id 'com.android.application' version '7.2.1' apply false
4 | id 'com.android.library' version '7.2.1' apply false
5 | }
6 |
7 | task clean(type: Delete) {
8 | delete rootProject.buildDir
9 | }
--------------------------------------------------------------------------------
/gradle.properties:
--------------------------------------------------------------------------------
1 | # Project-wide Gradle settings.
2 | # IDE (e.g. Android Studio) users:
3 | # Gradle settings configured through the IDE *will override*
4 | # any settings specified in this file.
5 | # For more details on how to configure your build environment visit
6 | # http://www.gradle.org/docs/current/userguide/build_environment.html
7 | # Specifies the JVM arguments used for the daemon process.
8 | # The setting is particularly useful for tweaking memory settings.
9 | org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
10 | # When configured, Gradle will run in incubating parallel mode.
11 | # This option should only be used with decoupled projects. More details, visit
12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
13 | # org.gradle.parallel=true
14 | # AndroidX package structure to make it clearer which packages are bundled with the
15 | # Android operating system, and which are packaged with your app"s APK
16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn
17 | android.useAndroidX=true
18 | # Enables namespacing of each library's R class so that its R class includes only the
19 | # resources declared in the library itself and none from the library's dependencies,
20 | # thereby reducing the size of the R class for that library
21 | android.nonTransitiveRClass=true
--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | #Fri Jul 01 15:57:23 CST 2022
2 | distributionBase=GRADLE_USER_HOME
3 | distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
4 | distributionPath=wrapper/dists
5 | zipStorePath=wrapper/dists
6 | zipStoreBase=GRADLE_USER_HOME
7 |
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/gradlew:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env sh
2 |
3 | #
4 | # Copyright 2015 the original author or authors.
5 | #
6 | # Licensed under the Apache License, Version 2.0 (the "License");
7 | # you may not use this file except in compliance with the License.
8 | # You may obtain a copy of the License at
9 | #
10 | # https://www.apache.org/licenses/LICENSE-2.0
11 | #
12 | # Unless required by applicable law or agreed to in writing, software
13 | # distributed under the License is distributed on an "AS IS" BASIS,
14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 | # See the License for the specific language governing permissions and
16 | # limitations under the License.
17 | #
18 |
19 | ##############################################################################
20 | ##
21 | ## Gradle start up script for UN*X
22 | ##
23 | ##############################################################################
24 |
25 | # Attempt to set APP_HOME
26 | # Resolve links: $0 may be a link
27 | PRG="$0"
28 | # Need this for relative symlinks.
29 | while [ -h "$PRG" ] ; do
30 | ls=`ls -ld "$PRG"`
31 | link=`expr "$ls" : '.*-> \(.*\)$'`
32 | if expr "$link" : '/.*' > /dev/null; then
33 | PRG="$link"
34 | else
35 | PRG=`dirname "$PRG"`"/$link"
36 | fi
37 | done
38 | SAVED="`pwd`"
39 | cd "`dirname \"$PRG\"`/" >/dev/null
40 | APP_HOME="`pwd -P`"
41 | cd "$SAVED" >/dev/null
42 |
43 | APP_NAME="Gradle"
44 | APP_BASE_NAME=`basename "$0"`
45 |
46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
48 |
49 | # Use the maximum available, or set MAX_FD != -1 to use that value.
50 | MAX_FD="maximum"
51 |
52 | warn () {
53 | echo "$*"
54 | }
55 |
56 | die () {
57 | echo
58 | echo "$*"
59 | echo
60 | exit 1
61 | }
62 |
63 | # OS specific support (must be 'true' or 'false').
64 | cygwin=false
65 | msys=false
66 | darwin=false
67 | nonstop=false
68 | case "`uname`" in
69 | CYGWIN* )
70 | cygwin=true
71 | ;;
72 | Darwin* )
73 | darwin=true
74 | ;;
75 | MINGW* )
76 | msys=true
77 | ;;
78 | NONSTOP* )
79 | nonstop=true
80 | ;;
81 | esac
82 |
83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
84 |
85 |
86 | # Determine the Java command to use to start the JVM.
87 | if [ -n "$JAVA_HOME" ] ; then
88 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
89 | # IBM's JDK on AIX uses strange locations for the executables
90 | JAVACMD="$JAVA_HOME/jre/sh/java"
91 | else
92 | JAVACMD="$JAVA_HOME/bin/java"
93 | fi
94 | if [ ! -x "$JAVACMD" ] ; then
95 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
96 |
97 | Please set the JAVA_HOME variable in your environment to match the
98 | location of your Java installation."
99 | fi
100 | else
101 | JAVACMD="java"
102 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
103 |
104 | Please set the JAVA_HOME variable in your environment to match the
105 | location of your Java installation."
106 | fi
107 |
108 | # Increase the maximum file descriptors if we can.
109 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
110 | MAX_FD_LIMIT=`ulimit -H -n`
111 | if [ $? -eq 0 ] ; then
112 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
113 | MAX_FD="$MAX_FD_LIMIT"
114 | fi
115 | ulimit -n $MAX_FD
116 | if [ $? -ne 0 ] ; then
117 | warn "Could not set maximum file descriptor limit: $MAX_FD"
118 | fi
119 | else
120 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
121 | fi
122 | fi
123 |
124 | # For Darwin, add options to specify how the application appears in the dock
125 | if $darwin; then
126 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
127 | fi
128 |
129 | # For Cygwin or MSYS, switch paths to Windows format before running java
130 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
131 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
132 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
133 |
134 | JAVACMD=`cygpath --unix "$JAVACMD"`
135 |
136 | # We build the pattern for arguments to be converted via cygpath
137 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
138 | SEP=""
139 | for dir in $ROOTDIRSRAW ; do
140 | ROOTDIRS="$ROOTDIRS$SEP$dir"
141 | SEP="|"
142 | done
143 | OURCYGPATTERN="(^($ROOTDIRS))"
144 | # Add a user-defined pattern to the cygpath arguments
145 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
146 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
147 | fi
148 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
149 | i=0
150 | for arg in "$@" ; do
151 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
152 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
153 |
154 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
155 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
156 | else
157 | eval `echo args$i`="\"$arg\""
158 | fi
159 | i=`expr $i + 1`
160 | done
161 | case $i in
162 | 0) set -- ;;
163 | 1) set -- "$args0" ;;
164 | 2) set -- "$args0" "$args1" ;;
165 | 3) set -- "$args0" "$args1" "$args2" ;;
166 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;;
167 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
168 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
169 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
170 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
171 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
172 | esac
173 | fi
174 |
175 | # Escape application args
176 | save () {
177 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
178 | echo " "
179 | }
180 | APP_ARGS=`save "$@"`
181 |
182 | # Collect all arguments for the java command, following the shell quoting and substitution rules
183 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
184 |
185 | exec "$JAVACMD" "$@"
186 |
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/gradlew.bat:
--------------------------------------------------------------------------------
1 | @rem
2 | @rem Copyright 2015 the original author or authors.
3 | @rem
4 | @rem Licensed under the Apache License, Version 2.0 (the "License");
5 | @rem you may not use this file except in compliance with the License.
6 | @rem You may obtain a copy of the License at
7 | @rem
8 | @rem https://www.apache.org/licenses/LICENSE-2.0
9 | @rem
10 | @rem Unless required by applicable law or agreed to in writing, software
11 | @rem distributed under the License is distributed on an "AS IS" BASIS,
12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | @rem See the License for the specific language governing permissions and
14 | @rem limitations under the License.
15 | @rem
16 |
17 | @if "%DEBUG%" == "" @echo off
18 | @rem ##########################################################################
19 | @rem
20 | @rem Gradle startup script for Windows
21 | @rem
22 | @rem ##########################################################################
23 |
24 | @rem Set local scope for the variables with windows NT shell
25 | if "%OS%"=="Windows_NT" setlocal
26 |
27 | set DIRNAME=%~dp0
28 | if "%DIRNAME%" == "" set DIRNAME=.
29 | set APP_BASE_NAME=%~n0
30 | set APP_HOME=%DIRNAME%
31 |
32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter.
33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
34 |
35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
37 |
38 | @rem Find java.exe
39 | if defined JAVA_HOME goto findJavaFromJavaHome
40 |
41 | set JAVA_EXE=java.exe
42 | %JAVA_EXE% -version >NUL 2>&1
43 | if "%ERRORLEVEL%" == "0" goto execute
44 |
45 | echo.
46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
47 | echo.
48 | echo Please set the JAVA_HOME variable in your environment to match the
49 | echo location of your Java installation.
50 |
51 | goto fail
52 |
53 | :findJavaFromJavaHome
54 | set JAVA_HOME=%JAVA_HOME:"=%
55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
56 |
57 | if exist "%JAVA_EXE%" goto execute
58 |
59 | echo.
60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
61 | echo.
62 | echo Please set the JAVA_HOME variable in your environment to match the
63 | echo location of your Java installation.
64 |
65 | goto fail
66 |
67 | :execute
68 | @rem Setup the command line
69 |
70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
71 |
72 |
73 | @rem Execute Gradle
74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
75 |
76 | :end
77 | @rem End local scope for the variables with windows NT shell
78 | if "%ERRORLEVEL%"=="0" goto mainEnd
79 |
80 | :fail
81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
82 | rem the _cmd.exe /c_ return code!
83 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
84 | exit /b 1
85 |
86 | :mainEnd
87 | if "%OS%"=="Windows_NT" endlocal
88 |
89 | :omega
90 |
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/local.properties:
--------------------------------------------------------------------------------
1 | ## This file is automatically generated by Android Studio.
2 | # Do not modify this file -- YOUR CHANGES WILL BE ERASED!
3 | #
4 | # This file should *NOT* be checked into Version Control Systems,
5 | # as it contains information specific to your local configuration.
6 | #
7 | # Location of the SDK. This is only used by Gradle.
8 | # For customization when using a Version Control System, please read the
9 | # header note.
10 | sdk.dir=C\:\\Users\\karoto\\AppData\\Local\\Android\\Sdk
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/settings.gradle:
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1 | pluginManagement {
2 | repositories {
3 | gradlePluginPortal()
4 | google()
5 | mavenCentral()
6 | }
7 | }
8 | dependencyResolutionManagement {
9 | repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
10 | repositories {
11 | google()
12 | mavenCentral()
13 | }
14 | }
15 | rootProject.name = "Android_SocketCAN"
16 | include ':app'
17 |
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