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) 2014-2015 * * 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 mbsePi-apps; 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 "lcd-buffer.h" #include "lcd-pcf8574.h" #include "slcd.h" #include "panel.h" int current_lines = 0; int current_offset = 0; lcd_rows *my_lcd_rows = NULL; extern int lcdHandle; extern int slcdHandle; extern sys_config Config; /* * Reset the LCD screens chain, it will automatic rebuild. */ void lcd_buf_reset(void) { lcd_rows *tmp, *old; for (tmp = my_lcd_rows; tmp; tmp = old) { old = tmp->next; tmp->next = NULL; free(tmp); } current_lines = current_offset = 0; my_lcd_rows = NULL; } /* * Write to buffer array. Allocate more lines if needed. */ void lcd_buf_write(int row, const char *format, ...) { char buf[81 * sizeof(char)]; va_list va_ptr; lcd_rows *tmp, *newrow; int i = 0; va_start(va_ptr, format); vsnprintf(buf, (Config.lcd_cols + 1) * sizeof(char), format, va_ptr); va_end(va_ptr); /* * Check if the line in row is allocated. If not, do it * and make sure the chain is valid. */ while (row > current_lines) { syslog(LOG_NOTICE, "lcd_buf_write(%d, ...) allocate new row", row); newrow = (lcd_rows *)malloc(sizeof(lcd_rows)); newrow->next = NULL; snprintf(newrow->row, (Config.lcd_cols + 1) * sizeof(char), " "); if (my_lcd_rows == NULL) { my_lcd_rows = newrow; } else { for (tmp = my_lcd_rows; tmp; tmp = tmp->next) { if (tmp->next == NULL) { tmp->next = newrow; current_lines++; break; } } } } /* * Now update the text */ for (tmp = my_lcd_rows; tmp; tmp = tmp->next) { i++; if (i == row) { snprintf(tmp->row, Config.lcd_cols + 1, "%s", buf); return; } } syslog(LOG_NOTICE, "lcd_buf_write(%d, ...) could not find row, i=%d", row, i); } void lcd_buf_step(int key) { if (key == KEY_DOWN) { if (current_offset < (current_lines - Config.lcd_rows)) current_offset += Config.lcd_rows; else current_offset = 0; syslog(LOG_NOTICE, "lcd_buf_step(KEY_DOWN) current_lines=%d current_offset=%d", current_lines, current_offset); lcd_buf_show(); } if (key == KEY_UP) { if (current_offset >= Config.lcd_rows) current_offset -= Config.lcd_rows; else current_offset = (current_lines - Config.lcd_rows); syslog(LOG_NOTICE, "lcd_buf_step(KEY_UP) current_lines=%d current_offset=%d", current_lines, current_offset); lcd_buf_show(); } } /* * This will be called from the main thread every second. */ void lcd_buf_show(void) { int i = 0, r = 0; lcd_rows *tmp; for (tmp = my_lcd_rows; tmp; tmp = tmp->next) { if (i == current_offset) break; i++; } if (tmp == NULL) { syslog(LOG_NOTICE, "lcd_buf_show: search after last record, current_offset=%d current_lines=%d i=%d", current_offset, current_lines, i); return; } for (r = 0; r < Config.lcd_rows; r++) { #ifdef HAVE_WIRINGPI_H lcdPosition(lcdHandle, 0, r); lcdPuts(lcdHandle, tmp->row); #endif slcdPosition(slcdHandle, 0, r); slcdPuts(slcdHandle, tmp->row); if (tmp->next != NULL) tmp = tmp->next; else tmp = my_lcd_rows; } }