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Moxa W321-LX [62/80] Tool chains for application development

5. Tool Chains for Application

Development

This chapter describes how to install a tool chain in the host computer that you use to develop your applications.

In addition, the process of performing cross-platform development and debugging are also introduced. For

clarity, the W321/341 embedded computer is called a target computer.

The following topics are covered in this chapter:



Linux Tool Chain

 Steps for Installing the Linux Tool Chain

 Compilation for Applications

Содержание

Eleventh edition may 2013 1
W321 341 linux software manual 1
Www moxa com product 1
Copyright notice 2
Disclaimer 2
Technical support contact information 2
Trademarks 2
W321 341 linux software manual 2
Www moxa com support 2
Introduction 5
Overview 6
Software architecture 6
W321 341 linux introduction 6
Journaling flash file system jffs2 7
W321 341 linux introduction 7
Software package 8
W321 341 linux introduction 8
Getting started 9
Accessing the w321 341 using a pc 10
Attention 10
Serial console 10
Ssh console 10
Windows users 10
Cd etc network 11
Configuring the ethernet interface 11
Linux users 11
Modifying network settings with the serial console 11
Root bee_notebook root ssh 192 68 27 the authenticity of host 192 68 27 192 68 27 can t be established rsa key fingerprint is 8b ee ff 84 41 25 fc cd 2a f2 92 8f cb 1f 6b 2f are you sure you want to continue connection yes no yes_ 11
Ssh 192 68 27 11
To change to the networking configuration directory 11
Vi interfaces 11
W321 341 linux getting started 11
Configuring the wlan 12
Esc w enter 12
Etc init d networking restart 12
Etc network interface 12
Ifconfig eth0 192 68 7 15 12
Iwpriv wlan0 get_site_survey 12
Temporarily modifying networking configurations 12
W321 341 linux getting started 12
Connecto to an ap via wep shared key authentication 13
Using wpa_supplicant to configure wpa2 13
Connecting to an ap via wpa wpa2 psk authentication 14
Etc init d wireless sh star 14
Etc init d wireless sh sto 14
Http www daemon systems org man wpa_supplicant conf html 14
W321 341 linux getting started 14
Configuring sta for ad hoc mode using wep 15
W321 341 linux getting started 15
Configuring sta for ad hoc mode using wpa none psk authentication 16
Etc init d wireless sh star 16
Etc init d wireless sh sto 16
Etc init d wireless sh stop 16
W321 341 linux getting started 16
Http www daemon systems org man wpa_supplicant conf html http linux die net man 5 wpa_supplicant conf 17
W321 341 linux getting started 17
Adding wep setting into configuration file 18
Adding wpa wpa2 settings into the configuration file 18
Enabling wpa_cli to interact with wpa_supplicant 18
Http linux die net man 8 wpa_cli 18
Scanning ap and checking results 18
W321 341 linux getting started 18
Sd slot and usb for storage expansion 19
W321 341 linux getting started 19
W321 341 linux getting started 20
Checking the flash memory space 21
Installing the tool chain linux 21
Mount dev cdrom mnt cdrom mnt cdrom tool chain arm linux_3 _build_11111411 sh 21
Path usr local arm linux 4 bin path 21
Test program developing hello c 21
W321 341 linux getting started 21
Cd example w321 hello make 22
Cd tmp mkdir example cp r mnt cdrom example w321 tmp example 22
Chmod x hello release hello release 22
Compiling hello c 22
Dev mtdblock 22
Ftp 192 68 27 22
Home and etc 22
Put hello release 22
Root localhost hello make usr local arm linux bin arm linux gcc o hello release hello c usr local arm linux bin arm linux strip s hello release usr local arm linux bin arm linux gcc ggdb o hello debug hello c root localhost hello _ 22
Uploading and running the hello program 22
W321 341 linux getting started 22
Compiling tcps2 c 23
Developing your first application 23
Root moxa hello release hello 23
Testing environment 23
W321 341 linux getting started 23
Uploading and running the tcps2 release program 24
68 27 putty 1 running tcps2 release root moxa ps pid uid vmsize stat command 1 root 532 s init 3 2 root swn ksoftirqd 0 3 root sw events 0 4 root sw khelper 13 root sw kblockd 0 14 root sw khubd 24 root sw pdflush 25 root sw pdflush 27 root sw aio 0 26 root sw kswapd0 604 root sw mtdblockd 609 root sw pccardd 611 root sw pccardd 625 root swn jffs2_gcd_mtd3 673 root 500 s bin inetd 682 bin 380 s bin portmap 685 root 1176 s bin sh login 690 root 464 s bin snmpd 714 root 1176 s bash 727 root 1164 s bash 728 root 1264 s tcps2 release 729 root 1592 s ps root moxa 25
Kill 9 728 25
Root moxa ls al drwxr xr x 2 root root 0 jun 12 02 14 drwxr xr x 15 root root 0 jan 1 1970 rw 1 root root 899 jun 10 08 11 bash_history rwxr xr x 1 root root 4996 jun 12 02 15 tcps2 release root moxa tcps2 release 1 187 start 25
Tcps2 release 25
Telnet 192 68 27 400 25
Testing procedure summary 25
W321 341 linux getting started 25
W321 341 linux getting started 26
Managing embedded linux 27
68 27 putty root moxa kversion w321 lx ersion 3 root moxa kversion a w321 lx version 3 build 13031118 28
Attention 28
Kversion 28
System image backup 28
System version information 28
Upgrading the firmware 28
W321 341 linux managing embedded linux 28
68 27 putty root moxa df filesystem 1k blocks used available use mounted on dev root 8192 7664 528 94 none 4096 8 4088 0 dev dev ram0 499 17 457 4 var dev mtdblock3 6144 588 5556 10 tmp dev mtdblock3 6144 588 5556 10 home dev mtdblock3 6144 588 5556 10 etc dev mmcblk0p1 479836 26993 428069 6 var mmc tmpfs 16384 0 16384 0 dev shm root moxa upramdisk root moxa df h filesystem size used available use mounted on dev root 8 m 7 m 528 k 94 none 4 m 8 k 4 m 0 dev dev ram0 499 k 18 k 456 k 4 var dev mtdblock3 6 m 588 k 5 m 10 tmp dev mtdblock3 6 m 588 k 5 m 10 home dev mtdblock3 6 m 588 k 5 m 10 etc dev mmcblk0p1 468 m 26 m 418 m 6 var mmc tmpfs 16 m 0 16 m 0 dev shm dev ram1 16 m 132 k 15 m 1 var ramdisk root moxa cd mnt ramdisk root moxa mnt ramdisk 29
Cd mnt ramdisk 29
Upramdisk 29
W321 341 linux managing embedded linux 29
Attention 30
Upgradehfm 30
W321 341 linux managing embedded linux 30
Enabling and disabling daemons 31
Loading factory defaults 31
Cd etc rc d init d 33
Cd etc rc d rc3 d 33
Ln s etc rc d init d tcps2 s60tcps2 33
Root 1852 s tcps2 release 33
Root 1924 s bin snmpd 122 root 4316 s bin sshd 6 f etc ssh sshd_config 132 root 4316 s bin sshd 4 f etc ssh sshd_config 161 root 6928 s sshd root pts 0 163 root 2864 s bash 214 root 0 sw flush 1 0 215 root 0 sw flush 1 1 33
Root 3096 r ps root moxa 33
Setting the run level 33
W321 341 linux managing embedded linux 33
68 27 putty 34
Adjusting the system time 34
Date mmddhhmmyyyy 34
Hwclock 34
Hwclock w 34
Ntp client 34
Ntpdate 192 68 7 34
Rm f etc rc d rc3 d s60tcps2 34
Setting the time manually 34
W321 341 linux managing embedded linux 34
Bin sh ntpdate time nist gov you can use the time server s ip address or domain name directly if you use domain name you must enable the domain client on the system by updating etc resolv conf file hwclock systohc sleep 100 updates every 100 seconds the min time is 100 seconds change 100 to a larger number to update rtc less often 35
Ntp 2345 respawn etc init d fixtime 35
Updating the time automatically 35
W321 341 linux managing embedded linux 35
8 root homefixtime sh 36
Bin sh ntpdate time nist gov hwclock systohc exit 0 36
Chmod 755 fixtime sh 36
Cron daemon to execute scheduled commands 36
Etc init d cron start 36
W321 341 linux managing embedded linux 36
Connecting storage peripherals 37
W321 341 linux managing embedded linux 37
Attention 38
W321 341 linux managing embedded linux 38
W321 341 linux managing embedded linux 39
Managing communications 40
3 00 putty root moxa etc cat resolv conf resolv conf this file is the resolver configuration file see resolver 5 nameserver 192 68 6 nameserver 168 5 nameserver 140 15 1 nameserver 140 15 36 0 41
Discard dgram udp wait root bin discard discard stream tcp nowait root bin discard telnet stream tcp nowait root bin telnetd ftp stream tcp nowait root bin ftpd l 41
Etc hosts 41
Etc resolv conf 41
Nameserver 168 5 41
W321 341 linux 41
Etc nsswitch conf 42
Iptables 42
W321 341 linux 42
W321 341 linux 43
Iptables iptables restore iptables save 44
Lsmod modprobe ip_tables modprobe iptable_filter 44
Modprobe iptable_filter 44
W321 341 linux 44
Define policy for chain rules 45
Iptables f iptables x iptables z 45
Iptables l n 45
Iptables p input drop iptables p output accept iptables p forward accept iptables t nat p prerouting accept iptables t nat p output accept iptables t nat p postrouting accept 45
Iptables t tables fxz 45
Iptables t tables l n 45
Iptables t tables p input output forward prerouting output postrouting accept drop 45
Observe and erase chain rules 45
W321 341 linux 45
Append or delete rules 46
Ipt_mac 46
Iptables a input i eth0 p all m mac mac source 01 02 03 04 05 06 j drop 46
Iptables a input i eth0 p tcp dport 21 j drop 46
Iptables a input i eth0 p tcp s 192 68 24 j accept 46
Iptables a input i eth0 p tcp s 192 68 4 dport 137 139 j accept 46
Iptables a input i eth0 p tcp s 192 68 5 j drop 46
Iptables a input i eth0 p tcp s 192 68 j accept 46
Iptables a input i lo j accept 46
Iptables t table ai input output forward io interface p tcp udp icmp all s ip network sport ports d ip network dport ports j accept drop 46
W321 341 linux 46
Enabling nat at bootup 47
Nat example 47
Dial up service ppp 48
Example 1 connecting to a ppp server over a simple dial up connection 48
Example 2 connecting to a ppp server over a hard wired link 49
How to check the connection 49
Netstat nr 50
Ping z z z z 50
Pppd dev ttym0 115200 crtscts modem 192 68 6 192 68 6 login auth 50
Setting up a machine for incoming ppp connections 50
W321 341 linux 50
Pppd dev ttym0 115200 crtscts modem 192 68 6 192 68 6 51
W321 341 linux 51
W321 341 linux 52
Mkdir p home nfs public mount t nfs nfs_server ip directory mount point 53
Mount t nfs 192 68 00 home public home nfs public 53
Nfs network file system 53
Setting up the w321 341 as an nfs client 53
W321 341 linux 53
W321 341 linux 54
Enable openvpn driver 55
Mknod dev net tun c 10 200 55
Openvpn 55
Root moxa modprobe tun 55
Setup 1 ethernet bridging for private networks on different subnets 55
W321 341 linux 55
Openvpn config a tap0 br conf openvpn config b tap0 br conf 59
Openvpn show ciphers openvpn show auths 59
Point to the peer remote 192 68 73 dev tap0 secret etc openvpn secrouter key cipher des ede3 cbc auth md5 tun mtu 1500 tun mtu extra 64 ping 40 up etc openvpn b tap0 br sh 59
Route add net 192 68 netmask 255 55 55 dev eth0 59
Start bin sh value after net is the subnet behind the remote peer route add net 192 68 netmask 255 55 55 dev br0 end 59
Tun mtu extra 64 ping 40 up etc openvpn a tap0 br sh 59
W321 341 linux 59
Killall term openvpn 60
Ping 192 68 74 60
Route add net 192 68 netmask 255 55 55 dev eth0 60
Setup 2 ethernet bridging for private networks on the same subnet 60
Setup 3 routed ip 60
W321 341 linux 60
Point to the peer remote 192 68 74 dev tun secret etc openvpn secrouter key cipher des ede3 cbc auth md5 tun mtu 1500 tun mtu extra 64 ping 40 ifconfig 192 68 73 192 68 74 up etc openvpn a tun sh 61
Remote 192 68 73 dev tun secret etc openvpn secrouter key cipher des ede3 cbc auth md5 tun mtu 1500 tun mtu extra 64 ping 40 ifconfig 192 68 74 192 68 73 up etc openvpn b tun sh 61
Start bin sh value after net is the subnet behind the remote peer route add net 192 68 netmask 255 55 55 gw 5 end 61
W321 341 linux 61
Tool chains for application development 62
Arm linu 63
Arm linux gc 63
Arm linux gcc o example wall g o2 example c arm linux strip s example arm linux gcc ggdb o example debug example c 63
Compilation for applications 63
Export path usr local arm linux 4 bin path 63
I386 linux 63
Linux tool chain 63
Mount dev cdrom mnt cdrom 63
Sh mnt cdrom tool chain w321 arm linux_3 _build_11111411 sh 63
Steps for installing the linux tool chain 63
W321 341 linux tool chains for application development 63
Programmer s guide 64
Buzzer 65
Device api 65
Flash memory map 65
Int ioctl fd rtc_rd_time struct rtc_time time 65
Int ioctl fd rtc_set_time struct rtc_time time 65
Int ioctl int d int request input int d open device node return file handle int request argument in or out 65
Man ioctl 65
Rtc real time clock 65
W321 341 linux programmer s guide 65
All drivers that have an ioctl interface support at least one ioctl 66
Int timeout 45 66
Ioctl fd kdmktone unsigned int arg 66
Ioctl fd wdioc_keepalive 0 ioctl fd wdioc_keepalive 0 66
Ioctl fd wdioc_settimeout timeout 66
Keepalive this ioctl does exactly the same thing as a write to the 66
Printf the timeout was set to d seconds n timeout 66
Replaced with 66
Sleep 10 sleep 10 66
The argument to the ioctl is ignored 66
W321 341 linux programmer s guide 66
Watchdog device so the main loop in the above program could be 66
Wdt watch dog timer 66
While 1 while 1 66
Ioctl fd wdioc_gettimeout timeout 67
Printf the timeout was is d seconds n timeout 67
This example might actually print the timeout was set to 60 seconds 67
W321 341 linux programmer s guide 67
Int fd open dev watchdog o_wronly 68
Int main void 68
Int ret 0 68
W321 341 linux programmer s guide 68
Application programming interface 69
Close fd 69
Digital input output w321 only 69
Exit exit_failure 69
If fd 1 69
If ret 1 69
Perror watchdog 69
Ret write fd 0 1 69
Return ret 69
Sleep 10 69
While 1 69
W321 341 linux programmer s guide 70
Examples 71
Special note 71
W321 341 linux programmer s guide 71
W321 341 linux programmer s guide 72
Di do program makefile example 73
W321 341 linux programmer s guide 73
Example to get the baudrate 74
Example to set the baudrate 74
You must 74
Baudrate inaccuracy 75
Example 75
Follow the standard termios baud rate define else ioctl fd moxa_get_special_baud_rate speed 75
Relay output w341 only 75
Special note 75
W321 341 linux programmer s guide 75
W321 341 linux programmer s guide 76
Software lock 77
Editor 78
File manager 78
Linux normal command utility collection 78
System commands 78
Modules 79
Network 79
Process 79
W321 341 linux system commands 79
Moxa special utilities 80
W321 341 linux system commands 80

Moxa W321-LX [62/80] Tool chains for application development

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