Sat, 25 Apr 2020 20:31:31 +0200
Version 0.9.8. Added extra path to the fonts for Debian buster. Changed the PID to work on Proportional on Measurement. Added loops so that it looks like the PID is running at 100 mSec intervals.
/***************************************************************************** * Copyright (C) 2015-2019 * * Michiel Broek <mbroek at mbse dot eu> * * This file is part of the mbsePi-apps * * This 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 2, or (at your option) any * later version. * * mbsePi-apps 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 ThermFerm; see the file COPYING. If not, write to the Free * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *****************************************************************************/ #include "thermferm.h" #include "slcd.h" #include "futil.h" #include "xutil.h" struct sockaddr_in sendaddr; /* Server send socket */ int sock = -1; uint16_t keys = 0x0000; uint16_t leds = 0x0400; /* LED's, buzzer, LCD backlight */ uint16_t oleds = 0x0400; void putLCDsocket(int fd, uint16_t data) { socklen_t slen = 0; uint16_t rdat; if (sock == -1) return; if (sendto(sock, &data, sizeof(uint16_t), 0, (struct sockaddr *)&sendaddr, sizeof(sendaddr)) != sizeof(uint16_t)) { syslog(LOG_NOTICE, "Socket %d send failed, closing socket: %s", sock, strerror(errno)); if (shutdown(sock, SHUT_RDWR)) { syslog(LOG_NOTICE, "Can't shutdown socket: %s", strerror(errno)); } sock = -1; } else { if (recvfrom(sock, &rdat, sizeof(uint16_t), 0, (struct sockaddr *) &sendaddr, &slen) != sizeof(uint16_t)) { syslog(LOG_NOTICE, "Socket %d recvfrom failed, closing socket: %s", sock, strerror(errno)); if (shutdown(sock, SHUT_RDWR)) { syslog(LOG_NOTICE, "Can't shutdown socket: %s", strerror(errno)); } sock = -1; } else { if ((rdat & SLCD_MKEYS) == SLCD_KEYS) { keys = rdat & 0x00ff; } } } } void slcdDummy(int fd) { putLCDsocket(fd, SLCD_NULL); } void slcdLEDs(int fd) { if (leds != oleds) putLCDsocket(fd, leds); oleds = leds; } void slcdClear(int fd) { putLCDsocket(fd, SLCD_CLEAR); putLCDsocket(fd, SLCD_HOME); } void slcdPosition(int fd, int x, int y) { uint16_t data = SLCD_DGRAM; data += (x & 0x1f) + ((y & 0x03) << 5); putLCDsocket(fd, data); } void slcdCharDef(int fd, int idx, unsigned char data[8]) { int i; putLCDsocket(fd, SLCD_CGRAM | ((idx & 7) << 3)); for (i = 0 ; i < 8 ; ++i) putLCDsocket(fd, data[i]); } void slcdPutchar(int fd, unsigned char c) { uint16_t data = SLCD_DATA; data += c & 0x0ff; putLCDsocket(fd, data); } void slcdPuts(int fd, const char *string) { while (*string) slcdPutchar(fd, *string++); } /* * Try to setup a udp connection to 127.0.0.1 so we duplicate the panel * display and keys of the real panel. This should fail on a production * system because there should no brewpanel program be running. If it * succeeds, all io will be duplicated over the network. */ int slcdInit(int fd, int cols, int rows) { if ((sock = socket(AF_INET, SOCK_DGRAM /*| SOCK_NONBLOCK */, 0)) < 0) { syslog(LOG_NOTICE, "slcdInit() can't create socket: %s", strerror(errno)); return -1; } /* * Setup address structure for the server socket. */ memset(&sendaddr, 0, sizeof(struct sockaddr_in)); sendaddr.sin_family = AF_INET; sendaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); sendaddr.sin_port = htons(SEND_PORT); if (connect(sock, (struct sockaddr *)&sendaddr, sizeof(sendaddr)) < 0) { close(sock); sock = -1; syslog(LOG_NOTICE, "slcdInit() can't bind sendsock %s", strerror(errno)); return -1; } syslog(LOG_NOTICE, "slcdInit() socket %d to brewpanel is active", sock); return 0; }