354 lines
9.1 KiB
C
354 lines
9.1 KiB
C
/* isbmex.c - model specific routines for SOLA/BASIC Mexico (ISBMEX) models
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Copyright (C) 2005 Ricardo Martinezgarza <ricardo@nexxis.com.mx>
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Copyright (C) 2002 Edscott Wilson Garcia <edscott@imp.mx>
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Copyright (C) 1999 Russell Kroll <rkroll@exploits.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "main.h"
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#include "serial.h"
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#include <math.h> /* for sqrt */
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#include <string.h>
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#define DRIVER_NAME "ISBMEX UPS driver"
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#define DRIVER_VERSION "0.06"
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/* driver description structure */
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upsdrv_info_t upsdrv_info = {
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DRIVER_NAME,
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DRIVER_VERSION,
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"Ricardo Martinezgarza <ricardo@nexxis.com.mx>\n" \
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"Edscott Wilson Garcia <edscott@imp.mx>\n" \
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"Russell Kroll <rkroll@exploits.org>",
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DRV_STABLE,
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{ NULL }
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};
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#define xDEBUG
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#ifdef DEBUG
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#define D(x) x
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#else
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#define D(x)
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#endif
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/*#define ENDCHAR '&'*/
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#define MAXTRIES 15
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/* #define IGNCHARS "" */
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float lagrange(unsigned int vbyte)
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{
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float f0, f1, f2, f3, f4, f5, f6;
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float a, b, c, d, e, g, h;
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const float x0=144.0, x1=154.0, x2=184.0, x3=195.0, x4=215.0, x5=228.0, x6=249.0;
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const float fX0=95.1, fX1=98.3, fX2=112.6, fX3=116.5, fX4=126.0, fX5=131.0, fX6=140.3;
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if(vbyte < 144) return 0.0;
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f0 = vbyte - x0;
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f1 = vbyte - x1;
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f2 = vbyte - x2;
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f3 = vbyte - x3;
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f4 = vbyte - x4;
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f5 = vbyte - x5;
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f6 = vbyte - x6;
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b = (f1 * f2 * f3 * f4 * f5 * f6 * fX0)/((x0 - x1) * (x0 - x2));
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b = b / ((x0 - x3) * (x0 - x4));
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b = b / ((x0 - x5) * (x0 - x6));
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c = (f0 * f2 * f3 * f4 * f5 * f6 * fX1)/((x1 - x0) * (x1 - x2));
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c = c / ((x1 - x3) * (x1 - x4));
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c = c / ((x1 - x5) * (x1 - x6));
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d = (f0 * f1 * f3 * f4 * f5 * f6 * fX2)/((x2 - x0) * (x2 - x1));
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d = d / ((x2 - x3) * (x2 - x4));
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d = d / ((x2 - x5) * (x2 - x6));
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e = (f0 * f1 * f2 * f4 * f5 * f6 * fX3)/((x3 - x0) * (x3 - x1));
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e = e / ((x3 - x2) * (x3 - x4));
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e = e / ((x3 - x5) * (x3 - x6));
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a = (f0 * f1 * f2 * f3 * f5 * f6 * fX4)/((x4 - x0) * (x4 - x1));
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a = a / ((x4 - x2) * (x4 - x3));
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a = a / ((x4 - x5) * (x4 - x6));
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g = (f0 * f1 * f2 * f3 * f4 * f6 * fX5)/((x5 - x0) * (x5 - x1));
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g = g / ((x5 - x2) * (x5 - x3));
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g = g / ((x5 - x4) * (x5 - x6));
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h = (f0 * f1 * f2 * f3 * f4 * f5 * fX6)/((x6 - x0) * (x6 - x1));
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h = h / ((x6 - x2) * (x6 - x3));
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h = h / ((x6 - x4) * (x6 - x5));
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return a + b + c + d + e + g + h;
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}
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float interpol(float vbytes)
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{
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const int x[7]={75,83,87,98,103,118,145};
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const float f[7]={96.0,102.0,105.0,113.0,116.0,124.0,140.0};
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float l[7];
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float t, volts;
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const int n=6;
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int i, j;
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if(vbytes < x[0]) return 0.0;
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if(vbytes > x[6]) return f[6];
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for(i=0; i<=n; i++)
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{
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if((int)vbytes == x[i]) return f[i];
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}
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for(i=0; i<=n; i++)
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{
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l[i] = 1.0;
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for(j=0; j<=n; j++)
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{
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if(j!=i) l[i] *= (float)(x[i] - x[j]);
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}
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l[i] = f[i] / l[i];
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}
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t = 1.0;
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for(i=0; i<=n; i++) t *= (vbytes - (float)x[i]);
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volts = 0.0;
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for(i=0; i<=n; i++) volts += (l[i] * t / (vbytes - (float)x[i]));
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return volts;
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}
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void upsdrv_initinfo(void)
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{
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dstate_setinfo("ups.mfr", "Sola/Basic Mexico");
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dstate_setinfo("ups.model", "SR-Inet 280/300/400/480/500/800/1000");
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/* high/low voltage */
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dstate_setinfo("input.transfer.low", "102.0"); /* defined */
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dstate_setinfo("input.transfer.high", "140.0"); /* defined */
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dstate_setinfo("output.voltage", "120.0"); /* defined */
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/* addinfo(INFO_, "", 0, 0); */
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/*printf("Using %s %s on %s\n", getdata(INFO_MFR), getdata(INFO_MODEL), device_path);*/
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}
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static const char *getpacket(int *we_know){
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fd_set readfds;
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struct timeval tv;
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int bytes_per_packet=0;
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int ret;
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static const char *packet_id=NULL;
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static char buf[256];
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const char *s;
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ssize_t r;
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bytes_per_packet=*we_know;
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D(printf("getpacket with %d\n",bytes_per_packet);)
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FD_ZERO(&readfds);
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FD_SET(upsfd,&readfds);
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/* Wait up to 2 seconds. */
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tv.tv_sec = 5;
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tv.tv_usec = 0;
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ret=select(upsfd+1, &readfds, NULL, NULL, &tv);
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if (!ret) {
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s="Nothing received from UPS. Check cable conexion";
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upslogx(LOG_ERR, "%s", s);
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D(printf("%s\n",s);)
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return NULL;
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}
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r=read(upsfd,buf,255);
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D(printf("%d bytes read: ",r);)
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buf[r]=0;
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if (bytes_per_packet && r < bytes_per_packet){
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ssize_t rr;
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D(printf("short read...\n");)
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usleep(500000);
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tv.tv_sec = 2;
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tv.tv_usec = 0;
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ret=select(upsfd+1, &readfds, NULL, NULL, &tv);
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if (!ret) return NULL;
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rr=read(upsfd,buf+r,255-r);
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r += rr;
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if (r < bytes_per_packet) return NULL;
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}
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if (!bytes_per_packet){ /* packet size determination */
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/* if (r%10 && r%9) {
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printf("disregarding incomplete packet\n");
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return NULL;
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}*/
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if (r%10==0) *we_know=10;
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else if (r%9==0) *we_know=9;
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return NULL;
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}
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/* by here we have bytes_per_packet and a complete packet */
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/* lets check if within the complete packet we have a valid packet */
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if (bytes_per_packet == 10) packet_id="&&&"; else packet_id="***";
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s=strstr(buf,packet_id);
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/* check validity of packet */
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if (!s) {
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s="isbmex: no valid packet signature!";
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upslogx(LOG_ERR, "%s", s);
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D(printf("%s\n",s);)
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*we_know=0;
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return NULL;
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}
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D(if (s != buf) printf("overlapping packet received\n");)
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if ((int) strlen(s) < bytes_per_packet) {
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D(printf("incomplete packet information\n");)
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return NULL;
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}
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#ifdef DEBUG
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printf("Got signal:");
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{int i;for (i=0;i<strlen(s);i++) printf(" <%d>",(unsigned char)s[i]);}
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printf("\n");
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#endif
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return s;
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}
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void upsdrv_updateinfo(void)
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{
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static float high_volt=-1, low_volt=999;
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const char *buf=NULL;
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char buf2[17];
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int i;
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static int bytes_per_packet=0;
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for (i=0;i<5;i++) {
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if ((buf=getpacket(&bytes_per_packet)) != NULL) break;
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}
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if (!bytes_per_packet || !buf) {
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dstate_datastale();
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return;
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}
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/* do the parsing */
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{
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float in_volt,battpct,acfreq;
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double d;
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D(printf("parsing (%d bytes per packet)\n",bytes_per_packet);)
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/* input voltage :*/
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if (bytes_per_packet==9) {
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in_volt = lagrange((unsigned char)buf[3]);
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} else {
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in_volt = interpol(sqrt((float)((unsigned char)buf[3]*256+(unsigned char)buf[4])));
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}
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snprintf(buf2,16,"%5.1f",in_volt);
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D(printf("utility=%s\n",buf2);)
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dstate_setinfo("input.voltage", "%s", buf2);
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if (in_volt >= high_volt) high_volt=in_volt;
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snprintf(buf2,16,"%5.1f",high_volt);
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D(printf("highvolt=%s\n",buf2);)
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dstate_setinfo("input.voltage.maximum", "%s", buf2);
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if (in_volt <= low_volt) low_volt=in_volt;
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snprintf(buf2,16,"%5.1f",low_volt);
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D(printf("lowvolt=%s\n",buf2);)
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dstate_setinfo("input.voltage.minimum", "%s", buf2);
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battpct = ((double)((unsigned char)buf[(bytes_per_packet==10)?5:4])-168.0)*(100.0/(215.0-168.0));
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snprintf(buf2,16,"%5.1f",battpct);
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D(printf("battpct=%s\n",buf2);)
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dstate_setinfo("battery.charge", "%s", buf2);
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d=(unsigned char)buf[(bytes_per_packet==10)?6:5]*256
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+ (unsigned char)buf[(bytes_per_packet==10)?7:6];
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acfreq = 1000000/d;
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snprintf(buf2,16,"%5.2f",acfreq);
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D(printf("acfreq=%s\n",buf2);)
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dstate_setinfo("input.frequency", "%s", buf2);
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D(printf("status: ");)
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status_init();
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switch (buf[(bytes_per_packet==10)?8:7]){
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case 48: break; /* normal operation */
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case 49: D(printf("BOOST ");)
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status_set("BOOST");
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break;
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case 50: D(printf("TRIM ");)
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status_set("TRIM");
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default: break;
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}
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switch (buf[(bytes_per_packet==10)?9:8]){
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case 48: D(printf("OL ");)
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status_set("OL");
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break;
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case 50: D(printf("LB ");)
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status_set("LB");
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case 49: D(printf("OB ");)
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status_set("OB");
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break;
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default: break;
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}
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D(printf("\n");)
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status_commit();
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}
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dstate_dataok();
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return;
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}
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void upsdrv_shutdown(void)
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{
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/* shutdown is supported on models with
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* contact closure. Some ISB models with serial
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* support support contact closure, some don't.
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* If yours does support it, then a 12V signal
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* on pin 9 does the trick (only when ups is
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* on OB condition) */
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/*
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* here try to do the pin 9 trick, if it does not
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* work, else:*/
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/* fatalx(EXIT_FAILURE, "Shutdown only supported with the Generic Driver, type 6 and special cable"); */
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/*fatalx(EXIT_FAILURE, "shutdown not supported");*/
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int i, ret;
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for(i=0;i<=5;i++)
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{
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ret = ser_send_char(upsfd, '#');
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usleep(50000);
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}
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}
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void upsdrv_help(void)
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{
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}
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/* list flags and values that you want to receive via -x */
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void upsdrv_makevartable(void)
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{
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}
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void upsdrv_initups(void)
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{
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upsfd = ser_open(device_path);
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ser_set_speed(upsfd, device_path, B9600);
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}
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void upsdrv_cleanup(void)
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{
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ser_close(upsfd, device_path);
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}
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