あかんはCも、暫くやらんと単純なミスに気がつかんわ
○ s_result = pfio_read_output() & patterns[port];
× s_result = pfio_read_output() && patterns[port];
○ int mysem_id = 0;
× uint16_t mysem_id = 0x0000;
mysem_id = semget(key, 1, 0666 | IPC_CREAT);
取得したmysem_idを使うとき×
https://sourceforge.jp/projects/pepolinux/releases/62474
pepoと
pepopifaceはRaspberry piのPiFace Digital I/O Expansion Boardを制御するコマンドです。
o 2013.07.20 ,1st release.
o 2013.9.5 ,to match the input state of piface, modified to highlight the port data.
o 2014.12.21 ,add an exclusive processing.
o 2014.12.26 ,read & write command return value bug fixes
Raspbian Linuxでセマフォ、排他制御、ftok、semget、semct、semop、ipcs、ipcrmの関数とコマンドの解説をしたよ
以下のリンクで詳しく解説しています
http://sourceforge.jp/projects/pepolinux/wiki/chobit_prog%20semaphore
pepoと
root@remote-hand:/www/remote-hand/tmp#
root@remote-hand:/www/remote-hand/tmp# echo $PS1
${debian_chroot:+($debian_chroot)}\u@\h:\w\$
bash.bashrcを変更
root@remote-hand:/www/remote-hand/tmp# vi /etc/bash.bashrc
#PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
#pepo
PS1="[\u@\W]\\$ "
再度ログイン
[root@~]# cd /www/remote-hand/tmp/
[root@tmp]#
お・すんふぁん、すっきりしたわ
/*
Copyright Isamu.Yamauchi 2013-2015. 2013.9.5, update 2014.12.21
This program uses the libpiface. thanks.
pepopiface.c is controls for Raspberry pi PiFace Digital I/O Expansion Board
*/
pepopiface are using Semaphore
First time to start without any options
[root@remote-hand ~]# pepopiface
** Welcome to pepopiface Version-0.3 Copyright Yamauchi.Isamu compiled:Dec 21 2014 **
usage:pepopiface port:0-8 [0|1] [timer:0-65535ms]
[root @ pepopiface] # ipcs -s
------ Semaphore Arrays --------
key semid owner perms nsems
0x530e3700 894009345 root 666 1
[root @ pepopiface] # ls /var/run/pepopiface.semaphore
Semaphore and file is created
usage:
[root@remote-hand ~]# pepopiface
** Welcome to pepopiface Version-0.3 Copyright Yamauchi.Isamu compiled:Dec 21 2014 **
usage:pepopiface port:0-8 [0|1] [timer:0-65535ms]
Concurrent read operation input port and output port
[root@remote-hand ~]# pepopiface 8
00ff[root@remote-hand ~]#
The high-order byte is the output port, the lower byte is the input port.
port0 write 1
[root@remote-hand ~]# pepopiface 0 1
1[root@remote-hand pepopiface]#
port0 write 0
[root@remote-hand ~]# pepopiface 0 0
0[root@remote-hand ~]#
port0 write 1 with timer
This operation is to "1" port of 0th 2 seconds.
[root@remote-hand ~]# pepopiface 0 1 2000
0[root@remote-hand ~]#
port0 read
[root@remote-hand ~]# pepopiface 0
1[root@remote-hand ~]#
Enjoy the piface and raspberry pi.
イギリスから先ほど届いたRaspberry pi b+とPifaceⅡが届き
早速raspbian版Remote-Hnad構築へ
