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phmeter.c
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phmeter.c
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/*
* This file is part of Aquarium Control Center (aquacc).
*
* Copyright (C) 2012-2013 Cluytens David <david.cluytens@gmail.com>
*
* Aquarium Control Center (aquacc) 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.
*
* Aquarium Control Center (aquacc) 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 Aquarium Control Center (aquacc). If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <syslog.h>
#include <stdlib.h>
#include <string.h>
#include <sys/select.h>
#include <sys/time.h>
#include <errno.h>
#include <signal.h>
#include <stdint.h>
#include <time.h>
#include <unistd.h>
#include "aquacc.h"
#include "serial.h"
#include "fd_list.h"
#include "fd_event.h"
#include "timer.h"
#include "phmeter.h"
#include "dsu_socket.h"
#include "socket.h"
#include "config.h"
extern aq_socket_t socks[MAX_SOCKETS];
extern aquacc_config_t aquacc_config;
static int fd_phmeter;
static int fd_socket;
void phmeter_init(void) {
char *serial_port = aquacc_config.phmeter_tty_port;
int serial_baudrate = aquacc_config.phmeter_tty_baudrate;
bool serial_rtscts = aquacc_config.phmeter_tty_rtscts;
userdata_t *data = NULL;
fprintf(stdout, "openSerial %s %d %d\n", serial_port, serial_baudrate, serial_rtscts);
fd_phmeter = openSerial(serial_port, 8, 1, 'N', serial_baudrate, serial_rtscts);
fd_socket = makeSocket(aquacc_config.phmeter_socket_port);
fprintf(stdout, "PH-METER FD %d SOCKET %d\n", fd_phmeter, fd_socket);
if (fd_phmeter <= 0) {
printd("Error opening serial port.\n");
exit(EXIT_FAILURE);
}
if (listenSocket(fd_socket, 1) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
/* PH-METER Socket Server */
data = socketserver_set_userdata(SOCKET_TYPE_PHMETER, fd_phmeter);
socketserver_set_read_event(fd_socket, data);
/* PH-METER */
phmeter_set_read_event(fd_phmeter, socks);
phmeter_set_write_event(fd_phmeter, socks);
/* PH-METER RESULT Timer */
phmeter_set_phresult_timer(fd_phmeter);
}
void phmeter_exit(void) {
size_t i;
for (i = 0; i < MAX_SOCKETS; i++) {
freeSocket(socks[i].fd);
closeSocket(socks[i].fd);
}
closeSerial(fd_phmeter);
closeSocket(fd_socket);
}
void phmeter_set_write_event(int fd_phmeter, aq_socket_t *socks) {
fd_list_t *fdList = aquacc_fd_list_new();
fdList->fd = fd_phmeter;
fdList->type = FD_LIST_TYPE_WRITE_EVENT;
fdList->istimer = false;
fdList->data = socks;
fdList->cb = phmeter_write_event_cb;
}
void phmeter_set_read_event(int fd_phmeter, aq_socket_t *socks) {
fd_list_t *fdList = aquacc_fd_list_new();
fdList->fd = fd_phmeter;
fdList->type = FD_LIST_TYPE_READ_EVENT;
fdList->istimer = false;
fdList->data = socks;
fdList->cb = phmeter_read_event_cb;
}
void phmeter_set_phresult_timer(int fd_phmeter) {
fd_list_t *fdList = aquacc_fd_list_new();
timer_init(SET_TIME_INTERVAL, &fdList->fd);
fdList->type = FD_LIST_TYPE_READ_EVENT;
fdList->istimer = true;
fdList->data = (void *)fd_phmeter;
fdList->cb = phmeter_timer_phresult_cb;
}
bool phmeter_read_event_cb(int fd, void *data) {
aq_socket_t *socks = data;
syslog(LOG_INFO, "phmeter_read_event_cb %d", fd);
phmeter_read(fd, socks);
return true;
}
bool phmeter_write_event_cb(int fd, void *data) {
aq_socket_t *socks = data;
syslog(LOG_INFO, "phmeter_write_event_cb %d", fd);
phmeter_write(fd, socks);
return true;
}
ssize_t phmeter_getPHresult(int fd) {
fprintf(stdout, "W PH-METER FD %d - (R)\n", fd);
return(writen_ni(fd, "r\r", 2));
}
/* Write current the current time to the phmeter unit */
bool phmeter_timer_phresult_cb(int __attribute__ ((unused)) fd, void *data) {
int fd_phmeter = (int)data;
phmeter_getPHresult(fd_phmeter);
return true;
}
void phmeter_write(int fd, aq_socket_t socks[]) {
size_t i;
/* Write socket information to phmeter unit */
for (i = 0; i < MAX_SOCKETS; i++) {
if (socks[i].free && socks[i].has_r_data && (socks[i].socket_type == SOCKET_TYPE_PHMETER)) {
replaceChar(socks[i].r_buffer, '\n', '\r');
writen_ni(fd, socks[i].r_buffer, socks[i].r_len);
socks[i].has_r_data = 0;
socks[i].r_len = 0;
}
}
clr_write_event(fd);
}
void phmeter_read(int fd, aq_socket_t socks[]) {
char phmeter_buffer[MAXMSG];
size_t i;
ssize_t phmeter_len;
fprintf(stdout, "PH-METER READ FD %d\n", fd);
phmeter_len = readSerial(fd, phmeter_buffer, sizeof(phmeter_buffer));
replaceChar(phmeter_buffer, '\r', '\n');
fprintf(stdout, "PH-METER READ FD %d LEN %d\n", fd, phmeter_len);
if (phmeter_len >= 0) {
/* Copy Buffer To All Connected Sockets */
for (i = 0; i < MAX_SOCKETS; i++) {
if (socks[i].free && (socks[i].socket_type == SOCKET_TYPE_PHMETER)) {
if (socks[i].has_w_data) {
printf("PH-METER: Appending wlen %u + phmeter_len %u\n", socks[i].w_len, phmeter_len);
memcpy(socks[i].w_buffer + socks[i].w_len, phmeter_buffer, phmeter_len);
socks[i].has_w_data = 1;
socks[i].w_len += phmeter_len;
} else {
memcpy(socks[i].w_buffer, phmeter_buffer, phmeter_len);
socks[i].has_w_data = 1;
socks[i].w_len = phmeter_len;
}
set_write_event(socks[i].fd);
}
}
}
}