add serialsockCANmanage

This commit is contained in:
Edward Emelianov 2022-01-31 17:37:08 +03:00
parent 830716fd1c
commit 7ecdf689d3
14 changed files with 614 additions and 0 deletions

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# run `make DEF=...` to add extra defines
PROGRAM := SEWcontrol
LDFLAGS := -fdata-sections -ffunction-sections -Wl,--gc-sections -Wl,--discard-all
LDFLAGS += -lusefull_macros -lm -L/usr/local/lib/
SRCS := $(wildcard *.c)
DEFINES := $(DEF) -D_GNU_SOURCE -D_XOPEN_SOURCE=1111
OBJDIR := mk
CFLAGS += -O3 -Wno-trampolines -std=gnu99
OBJS := $(addprefix $(OBJDIR)/, $(SRCS:%.c=%.o))
DEPS := $(OBJS:.o=.d)
CC = gcc
#CXX = g++
all : $(PROGRAM)
debug: CFLAGS += -DEBUG -Werror -Wall -Wextra
debug: all
$(OBJS): $(OBJDIR)
$(PROGRAM) : $(OBJS)
@echo -e "\t\tLD $(PROGRAM)"
$(CC) $(OBJS) $(LDFLAGS) -o $(PROGRAM)
$(OBJDIR):
mkdir $(OBJDIR)
ifneq ($(MAKECMDGOALS),clean)
-include $(DEPS)
endif
$(OBJDIR)/%.o: %.c
@echo -e "\t\tCC $<"
$(CC) $< -MD -c $(CFLAGS) $(DEFINES) -o $@
clean:
@echo -e "\t\tCLEAN"
@rm -f $(OBJS) $(DEPS)
@rmdir $(OBJDIR) 2>/dev/null || true
xclean: clean
@rm -f $(PROGRAM)
.PHONY: clean xclean

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Simplest SEW motor controllers manage using serialsock and CAN-USB

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-std=c17

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// Add predefined macros for your project here. For example:
// #define THE_ANSWER 42
#define EBUG
#define _GNU_SOURCE
#define _XOPEN_SOURCE=1111

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[General]

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-std=c++17

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cmdlnopts.c
cmdlnopts.h
main.c
sersock.c
sersock.h

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.

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/*
* This file is part of the SEWmanage project.
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include "cmdlnopts.h"
#include "usefull_macros.h"
// default PID filename:
#define DEFAULT_SOCKPATH "\0canbus"
static int help;
static glob_pars G = {
.path = DEFAULT_SOCKPATH,
};
glob_pars *GP = &G;
/**
* Define command line options by filling structure:
* name has_arg flag val type argptr help
*/
static myoption cmdlnopts[] = {
{"help", NO_ARGS, NULL, 'h', arg_int, APTR(&help), _("show this help")},
{"logfile", NEED_ARG, NULL, 'l', arg_string, APTR(&G.logfile), _("file to save logs (default: none)")},
{"sockpath",NEED_ARG, NULL, 'f', arg_string, APTR(&G.path), _("socket path (start from \\0 for no files)")},
{"verbose", NO_ARGS, NULL, 'v', arg_none, APTR(&G.verbose), _("increase log verbose level (default: LOG_WARN) and messages (default: none)")},
{"setspeed",NEED_ARG, NULL, 's', arg_int, APTR(&G.setspeed), _("set motor speed")},
{"stop", NO_ARGS, NULL, '0', arg_int, APTR(&G.stop), _("stop motor")},
end_option
};
/**
* Parse command line options and return dynamically allocated structure
* to global parameters
* @param argc - copy of argc from main
* @param argv - copy of argv from main
* @return allocated structure with global parameters
*/
void parse_args(int argc, char **argv){
int i;
size_t hlen = 1024;
char helpstring[1024], *hptr = helpstring;
snprintf(hptr, hlen, "Usage: %%s [args]\n\n\tWhere args are:\n");
// format of help: "Usage: progname [args]\n"
change_helpstring(helpstring);
// parse arguments
parseargs(&argc, &argv, cmdlnopts);
for(i = 0; i < argc; i++)
printf("Ignore parameter\t%s\n", argv[i]);
if(help) showhelp(-1, cmdlnopts);
}
/**
* @brief verbose - print additional messages depending of G.verbose (add '\n' at end)
* @param levl - message level
* @param fmt - message
*/
void verbose(int levl, const char *fmt, ...){
va_list ar;
if(levl > G.verbose) return;
//printf("%s: ", __progname);
va_start(ar, fmt);
vprintf(fmt, ar);
va_end(ar);
printf("\n");
}

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/*
* This file is part of the SEWmanage project.
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifndef CMDLNOPTS_H__
#define CMDLNOPTS_H__
/*
* here are some typedef's for global data
*/
typedef struct{
char *logfile; // logging to this file
char *path; // path to socket file
int stop; // stop motor
int setspeed; // set this speed (rev/min)
int verbose; // verbose level: for messages & logging
} glob_pars;
extern glob_pars *GP;
void parse_args(int argc, char **argv);
void verbose(int levl, const char *fmt, ...);
#endif // CMDLNOPTS_H__

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/*
* This file is part of the SEWmanage project.
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/wait.h>
#include <usefull_macros.h>
#include "cmdlnopts.h"
#include "sersock.h"
static pid_t childpid = 0;
void signals(int sig){
if(childpid){ // slave process
DBG("Child killed with sig=%d", sig);
LOGWARN("Child killed with sig=%d", sig);
exit(sig);
}
if(sig){
DBG("Exit with signal %d", sig);
signal(sig, SIG_IGN);
LOGERR("Exit with signal %d", sig);
}else LOGERR("Exit");
exit(sig);
}
int main(int argc, char **argv){
initial_setup();
parse_args(argc, argv);
if(GP->logfile){
int lvl = LOGLEVEL_WARN + GP->verbose;
DBG("level = %d", lvl);
if(lvl > LOGLEVEL_ANY) lvl = LOGLEVEL_ANY;
verbose(1, "Log file %s @ level %d\n", GP->logfile, lvl);
OPENLOG(GP->logfile, lvl, 1);
if(!globlog) WARNX("Can't create log file");
}
// signal reactions:
signal(SIGTERM, signals); // kill (-15) - quit
signal(SIGHUP, SIG_IGN); // hup - ignore
signal(SIGINT, signals); // ctrl+C - quit
signal(SIGQUIT, signals); // ctrl+\ - quit
signal(SIGTSTP, SIG_IGN); // ignore ctrl+Z
DBG("start");
LOGMSG("Started");
/*
#ifndef EBUG
unsigned int pause = 5;
while(1){
childpid = fork();
if(childpid){ // master
double t0 = dtime();
LOGMSG("Created child with pid %d", childpid);
wait(NULL);
LOGWARN("Child %d died", childpid);
if(dtime() - t0 < 1.) pause += 5;
else pause = 1;
if(pause > 900) pause = 900;
sleep(pause); // wait a little before respawn
}else{ // slave
prctl(PR_SET_PDEATHSIG, SIGTERM); // send SIGTERM to child when parent dies
break;
}
}
#endif
*/
CANcmd mesg = CMD_GETSPEED;
if(GP->setspeed){
if(GP->stop) ERRX("Commands 'stop' and 'set speed' can't be together");
if(GP->setspeed < -0xffff/5 || GP->setspeed > 0xffff/5) ERRX("Parameter 'set speed' should be |int16_t| < %d", 0xffff/5);
mesg = CMD_SETSPEED;
}else if(GP->stop) mesg = CMD_STOP;
signals(start_socket(GP->path, mesg, GP->setspeed));
return 0;
}

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/*
* This file is part of the canserver project.
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <netdb.h>
#include <poll.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/un.h> // unix socket
#include <usefull_macros.h>
#include "cmdlnopts.h"
#include "sersock.h"
// canopen parameters idx: get speed and get current
#define PARIDX_GETSPEED (8318)
#define PARIDX_GETCURRENT (8326)
/**
* check data from fd
* @param fd - file descriptor
* @return 0 in case of timeout, 1 in case of fd have data, -1 if error
*/
static int canberead(int fd){
fd_set fds;
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 100;
FD_ZERO(&fds);
FD_SET(fd, &fds);
do{
int rc = select(fd+1, &fds, NULL, NULL, &timeout);
if(rc < 0){
if(errno != EINTR){
LOGWARN("select()");
WARN("select()");
return -1;
}
continue;
}
break;
}while(1);
if(FD_ISSET(fd, &fds)){
DBG("FD_ISSET");
return 1;
}
return 0;
}
static int CANsend(int sock, char *cmd){
ssize_t L = strlen(cmd);
if(send(sock, cmd, L, 0) != L){
WARN("send");
LOGERR("send");
return FALSE;
}
cmd[L-1] = 0;
DBG("SEND: %s", cmd);
LOGMSG("SEND: %s", cmd);
return TRUE;
}
int start_socket(char *path, CANcmd mesg, int par){
FNAME();
int sock = -1;
struct sockaddr_un saddr = {0};
saddr.sun_family = AF_UNIX;
strncpy(saddr.sun_path, path, 106); // if sun_path[0] == 0 we don't create a file
if((sock = socket(AF_UNIX, SOCK_SEQPACKET, 0)) < 0){ // or SOCK_STREAM?
LOGERR("socket()");
ERR("socket()");
}
if(connect(sock, &saddr, sizeof(saddr)) == -1){
LOGERR("connect()");
ERR("connect()");
}
int Bufsiz = BUFLEN;
char *recvBuff = MALLOC(char, Bufsiz);
char cmd[BUFLEN];
int setcmd = FALSE;
int16_t spd;
switch(mesg){
case CMD_SETSPEED:
spd = (int16_t) (par*5);
sprintf(cmd, "s 6 0 6 %d %d 0 0\n", (spd>>8), (spd&0xff));
setcmd = TRUE;
break;
case CMD_STOP:
sprintf(cmd, "s 6 0 2 0 0 0 0\n");
setcmd = TRUE;
break;
default:
break;
}
if(setcmd && !CANsend(sock, cmd)) return 1;
for(int i = 0; i < NMOTORS; ++i){
uint16_t id = 512 + ((i+1)<<3) + 3, cmdidx = PARIDX_GETSPEED;
//uint8_t CANbuf[8] = {0};
sprintf(cmd, "s %u 0x31 0 %d %d 0 0 0 0\n", id, (cmdidx>>8), (cmdidx&0xff));
if(!CANsend(sock, cmd)) continue;
double T0 = dtime();
while(dtime() - T0 < TIMEOUT){
if(1 != canberead(sock)) continue;
int n = read(sock, recvBuff, Bufsiz-1);
DBG("Got %d", n);
if(n == 0){
WARNX("Server disconnected");
signals(1);
}
recvBuff[n] = 0;
printf("%s", recvBuff);
if(recvBuff[n-1] == '\n') recvBuff[n-1] = 0;
LOGMSG("RECEIVE: %s", recvBuff);
break;
}
}
close(sock);
signals(0);
return 0;
}

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/*
* This file is part of the SEWmanage project.
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifndef SERSOCK_H__
#define SERSOCK_H__
#define BUFLEN (1024)
// timeout for answer from socket
#define TIMEOUT (5.)
// motors amount
#define NMOTORS (3)
typedef enum{
CMD_GETSPEED, // just get speed
CMD_SETSPEED, // set given speed
CMD_STOP, // stop motor
} CANcmd;
int start_socket(char *path, CANcmd cmd, int par);
#endif // SERSOCK_H__