+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.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; version 2 of the License.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package altoslib;
+
+public class AltosMs5607 {
+ public int reserved;
+ public int sens;
+ public int off;
+ public int tcs;
+ public int tco;
+ public int tref;
+ public int tempsens;
+ public int crc;
+
+ public int raw_pres;
+ public int raw_temp;
+ public int pa;
+ public int cc;
+
+ void convert() {
+ int dT;
+ int TEMP;
+ long OFF;
+ long SENS;
+ int P;
+
+ dT = raw_temp - ((int) tref << 8);
+
+ TEMP = (int) (2000 + (((long) dT * tempsens) >> 23));
+
+ OFF = ((long) off << 17) + (((long) tco * dT) >> 6);
+
+ SENS = ((long) sens << 16) + (((long) tcs * dT) >> 7);
+
+ if (TEMP < 2000) {
+ int T2 = (int) (((long) dT * (long) dT) >> 31);
+ int TEMPM = TEMP - 2000;
+ long OFF2 = (61 * (long) TEMPM * (long) TEMPM) >> 4;
+ long SENS2 = 2 * (long) TEMPM * (long) TEMPM;
+ if (TEMP < 1500) {
+ int TEMPP = TEMP + 1500;
+ long TEMPP2 = TEMPP * TEMPP;
+ OFF2 = OFF2 + 15 * TEMPP2;
+ SENS2 = SENS2 + 8 * TEMPP2;
+ }
+ TEMP -= T2;
+ OFF -= OFF2;
+ SENS -= SENS2;
+ }
+
+ pa = (int) (((((long) raw_pres * SENS) >> 21) - OFF) >> 15);
+ cc = TEMP;
+ }
+
+ public int set(int in_pres, int in_temp) {
+ raw_pres = in_pres;
+ raw_temp = in_temp;
+ convert();
+ return pa;
+ }
+}
projects / fw / altos / commitdiff