ICode9
精准搜索请尝试： 精确搜索
首页
编程语言>
数据库
系统相关
互联网
其他分享
Python
Java
JavaScript
android
PHP
首页 > 其他分享> 文章详细

RT-Thread 应用笔记 - libmodbus RTU 编译问题的解决

2021-12-25 00:00:49  阅读：699  来源： 互联网

标签：RT libmodbus 20 Thread .. error serial identifier undefined


前言

  • 更新最新的RT-Thread 标准版后，发现libmodbus软件包，无法正常编译通过
  • 使用RT-Thread Studio编译，gcc的无法编译通过
  • 使用Keil MDK5编译，依旧是编译不通过

Keil MDK5 解决方法

  • 这里使用RT-Thread中的随意一个BSP：如rt-thread\bsp\stm32\stm32l475-atk-pandora

  • menuconfig配置，默认配置皆可

  • scons --target=mdk5构建工程，确保默认工程可以正常的编译
    2021-12-24_085425.png

  • 开启libmodbus软件包，这里使用RTU模式，手动把软件包的例程copy到工程中
    2021-12-24_085624.png

  • pkgs --update下载libmodbus软件包到本地

  • 重新构建工程，编译发现无法通过

Build started: Project: project
*** Using Compiler 'V5.06 update 7 (build 960)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Build target 'rt-thread'
compiling modbus.c...
packages\libmodbus-latest\inc\modbus-private.h(84): error:  #20: identifier "fd_set" is undefined
      int (*select) (modbus_t *ctx, fd_set *rset, struct timeval *tv, int msg_length);
packages\libmodbus-latest\src\modbus.c(150): warning:  #68-D: integer conversion resulted in a change of sign
          return MSG_LENGTH_UNDEFINED;
packages\libmodbus-latest\src\modbus.c(184): error:  #20: identifier "EBADF" is undefined
                  if ((errno == EBADF || errno == ECONNRESET || errno == EPIPE)) {
packages\libmodbus-latest\src\modbus.c(184): error:  #20: identifier "ECONNRESET" is undefined
                  if ((errno == EBADF || errno == ECONNRESET || errno == EPIPE)) {
packages\libmodbus-latest\src\modbus.c(184): error:  #20: identifier "EPIPE" is undefined
                  if ((errno == EBADF || errno == ECONNRESET || errno == EPIPE)) {
packages\libmodbus-latest\src\modbus.c(339): error:  #20: identifier "fd_set" is undefined
      fd_set rset;
packages\libmodbus-latest\src\modbus.c(355): warning:  #223-D: function "FD_ZERO" declared implicitly
      FD_ZERO(&rset);
packages\libmodbus-latest\src\modbus.c(356): warning:  #223-D: function "FD_SET" declared implicitly
      FD_SET(ctx->s, &rset);
packages\libmodbus-latest\src\modbus.c(381): error:  #20: identifier "ETIMEDOUT" is undefined
                  if (errno == ETIMEDOUT) {
packages\libmodbus-latest\src\modbus.c(384): error:  #20: identifier "EBADF" is undefined
                  } else if (errno == EBADF) {
packages\libmodbus-latest\src\modbus.c(395): error:  #20: identifier "ECONNRESET" is undefined
              errno = ECONNRESET;
packages\libmodbus-latest\src\modbus.c(402): error:  #20: identifier "ECONNRESET" is undefined
                  (errno == ECONNRESET || errno == ECONNREFUSED ||
packages\libmodbus-latest\src\modbus.c(402): error:  #20: identifier "ECONNREFUSED" is undefined
                  (errno == ECONNRESET || errno == ECONNREFUSED ||
packages\libmodbus-latest\src\modbus.c(403): error:  #20: identifier "EBADF" is undefined
                   errno == EBADF)) {
packages\libmodbus-latest\src\modbus.c(910): error:  #20: identifier "ENOPROTOOPT" is undefined
          errno = ENOPROTOOPT;
packages\libmodbus-latest\src\modbus.c(912): warning:  #111-D: statement is unreachable
          break;
packages\libmodbus-latest\src\modbus.c: 4 warnings, 12 errors
compiling modbus-rtu.c...
packages\libmodbus-latest\src\modbus-rtu.c(18): error:  #5: cannot open source input file "dfs_select.h": No such file or directory
  #include <dfs_select.h>
packages\libmodbus-latest\src\modbus-rtu.c: 0 warnings, 1 error
compiling serial.c...
..\..\..\components\drivers\serial\serial.c(890): error:  #20: identifier "speed_t" is undefined
      speed_t speed;
..\..\..\components\drivers\serial\serial.c(896): error:  #20: identifier "B2400" is undefined
      {B2400, BAUD_RATE_2400},
..\..\..\components\drivers\serial\serial.c(897): error:  #20: identifier "B4800" is undefined
      {B4800, BAUD_RATE_4800},
..\..\..\components\drivers\serial\serial.c(898): error:  #20: identifier "B9600" is undefined
      {B9600, BAUD_RATE_9600},
..\..\..\components\drivers\serial\serial.c(899): error:  #20: identifier "B19200" is undefined
      {B19200, BAUD_RATE_19200},
..\..\..\components\drivers\serial\serial.c(900): error:  #20: identifier "B38400" is undefined
      {B38400, BAUD_RATE_38400},
..\..\..\components\drivers\serial\serial.c(901): error:  #20: identifier "B57600" is undefined
      {B57600, BAUD_RATE_57600},
..\..\..\components\drivers\serial\serial.c(902): error:  #20: identifier "B115200" is undefined
      {B115200, BAUD_RATE_115200},
..\..\..\components\drivers\serial\serial.c(903): error:  #20: identifier "B230400" is undefined
      {B230400, BAUD_RATE_230400},
..\..\..\components\drivers\serial\serial.c(904): error:  #20: identifier "B460800" is undefined
      {B460800, BAUD_RATE_460800},
..\..\..\components\drivers\serial\serial.c(905): error:  #20: identifier "B921600" is undefined
      {B921600, BAUD_RATE_921600},
..\..\..\components\drivers\serial\serial.c(906): error:  #20: identifier "B2000000" is undefined
      {B2000000, BAUD_RATE_2000000},
..\..\..\components\drivers\serial\serial.c(907): error:  #20: identifier "B3000000" is undefined
      {B3000000, BAUD_RATE_3000000},
..\..\..\components\drivers\serial\serial.c(910): error:  #20: identifier "speed_t" is undefined
  static speed_t _get_speed(int baudrate)
..\..\..\components\drivers\serial\serial.c(920): error:  #20: identifier "B0" is undefined
      return B0;
..\..\..\components\drivers\serial\serial.c(923): error:  #20: identifier "speed_t" is undefined
  static int _get_baudrate(speed_t speed)
..\..\..\components\drivers\serial\serial.c(950): error:  #20: identifier "TCIFLUSH" is undefined
          case TCIFLUSH:
..\..\..\components\drivers\serial\serial.c(951): error:  #20: identifier "TCIOFLUSH" is undefined
          case TCIOFLUSH:
..\..\..\components\drivers\serial\serial.c(974): error:  #20: identifier "TCOFLUSH" is undefined
           case TCOFLUSH:
..\..\..\components\drivers\serial\serial.c(910): warning:  #177-D: function "_get_speed"  was declared but never referenced
  static speed_t _get_speed(int baudrate)
..\..\..\components\drivers\serial\serial.c(923): warning:  #177-D: function "_get_baudrate"  was declared but never referenced
  static int _get_baudrate(speed_t speed)
..\..\..\components\drivers\serial\serial.c(936): warning:  #177-D: function "_tc_flush"  was declared but never referenced
  static void _tc_flush(struct rt_serial_device *serial, int queue)
..\..\..\components\drivers\serial\serial.c: 3 warnings, 19 errors
".\build\keil\Obj\rt-thread.axf" - 32 Error(s), 7 Warning(s).
Target not created.
Build Time Elapsed:  00:00:01
  • 定位编译不通过的问题，确认为libmodbus的头文件包含问题
  • 工程配置：select
    2021-12-24_094908.png

2021-12-24_094940.png

libmodbus软件包修改如下：

  • modbus.c 中：#include <errno.h> -> #include <sys/errno.h>
  • modbus-rtu.c中：#include <dfs_select.h> -> #include <sys/select.h>
  • modbus-private.h 中：增加#include <sys/select.h>
  • 编译问题解决

小结

  • 可能最近内核规范化，修改了部分路径、头文件的包含需要更新
  • 可以通过VS Code，全局搜索无法识别的函数、定义等，然后包含相应的头文件即可
  • RT-Thread Studio的libmodubs软件包，编译不通过，可以参考上面的修改方法

参考例程

https://gitee.com/zhangsz0516/nucleo_l476rg_pm/tree/master/libmodbus_master

标签：RT,libmodbus,20,Thread,..,error,serial,identifier,undefined
来源： https://blog.csdn.net/tcjy1000/article/details/122137773

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

关于我们 | 联系我们 | 留言反馈

专注分享技术，共同学习，共同进步。侵权联系[81616952@qq.com]

Copyright (C)ICode9.com, All Rights Reserved.

ICode9版权所有