From e32c4ad975b8927fafb88ee48571f90d34e2e61f Mon Sep 17 00:00:00 2001 From: Peter Popovec Date: Fri, 29 Apr 2011 09:57:17 +0200 Subject: [PATCH] Initial commit --- .gitignore | 3 + Copyright.txt | 339 ++++++++++++++++++++++++++++++++ Makefile | 9 + README | 286 +++++++++++++++++++++++++++ ut70d.c | 527 ++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 1164 insertions(+) create mode 100644 .gitignore create mode 100644 Copyright.txt create mode 100644 Makefile create mode 100644 README create mode 100644 ut70d.c diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..56fb330 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +old +ut70d + diff --git a/Copyright.txt b/Copyright.txt new file mode 100644 index 0000000..d159169 --- /dev/null +++ b/Copyright.txt @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..2581d69 --- /dev/null +++ b/Makefile @@ -0,0 +1,9 @@ +all: ut70d + +ut70d: ut70d.c + cc -Wall ut70d.c -o ut70d -g + + +clean: + rm -f ut70d + rm -f *~ diff --git a/README b/README new file mode 100644 index 0000000..b613784 --- /dev/null +++ b/README @@ -0,0 +1,286 @@ +Documentation for ut70d multimeter communication protocol. + +Copyright (c) 2010 Peter Popovec + +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; either version 2 +of the License, or (at your option) any later version. + +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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, +USA. + + + +Cable pins: + + RS232 name +1 NC Carier detect +2 green RX +3 white TX +4,6 orange DTR(4),DSR(6) +5 yelow GND +7,8 blue RTS(7),CTS(8) +9 NC Ring indikator + + +IR head + +on head IR transmitter and IR receiver can be found. Cable get out from +head on side of IR receiver + + + +Communication: + +Send one byte 0-127, get echo of this value + +For value 128 to 150 response paket can be received: + +Paket format: +0 = echo from command +1 = mode (rotary switch position+subfunction by yellow button) +2,3,4 bit mapped fields, see bellow, + +n-2 checksum +n-1 0xa0 - end of paket + + +checksum calculation, because UNI-t doc is very difficult to read. (what +is bit 8 in Uni-T doc ? ). + +Based on experiments and Uni-T doc following algorhithm can be used to +check paket: + +1. X=0 +2. X = X XOR byte[Y] iterate Y from 0 to n-3 +3. X[bit4] = X[bit4] xor X[bit6] +4. X[bit5] = X[bit5] xor X[bit7] +5. clear X[bit6],X[bit7] +6. X -= byte[n-2] +7. X += 0x22 +8. X==0 ? paket ok. + + +byt 1 MODE +----- +F8 1111 1000 V~ +F0 1111 0000 V= +E8 1110 1000 mV +E0 1110 0000 R/C +E1 1110 0001 F +D8 1101 1000 Dio +A8 1010 1000 A= +A9 1010 1001 A~ +B0 1011 0000 mA= +B1 1011 0001 mA~ + +byt 2 RANGE and UNITS +----- +bit 7 always 1 ? +bit 6 manual/auto +bit 5,4,3 range .. +bit 2,1,0 + 0 = F-capacitance, 1=? 2= V,A,OHM 3 =? + 4 = Hz frequency, 5 = % 6= ? 7 = ? + + +byt 3 +----- +7 always 1 ? +6 "REC" +5 always 0 ? +4,3 00 - none 01 MAX 10 MIN 11 AVG +2 1=beeper on +1 always 0 ? +0 always 0 ? + + +byt4 binary maped: +---- +7 always 1 ? +6 always 0 ? +5 1 = low bat +4 1 = + 0 = - +3 1 = overflow (0L on display) +2 1 = Hz 0 = no Hz +1 always 0 ? +0 1 = hold 0 = sample + + + +Example response pakets: + + + +128 reply paket len 11 ADC readimg SUM1 in FS970X *Direct reading sum1 +80 F0 82 80 80 80 A0 8E 90 5E 0A +129 reply paket len 11 +81 F0 82 80 80 80 A1 B8 80 3C 0A +130 reply paket len 11 ADC readimg SUM2 in FS970X *direct reading sum2 +82 F0 82 80 80 80 A2 88 80 4C 0A +131 reply paket len 11 +83 F0 82 80 80 85 B7 BE 80 2F 0A +132 reply paket len 11 *positive peak +84 F0 82 80 80 8A B7 BE 80 27 0A +133 reply paket len 11 +85 F0 82 80 80 A0 87 B4 80 36 0A +134 reply paket len 11 *negative peak +86 F0 82 80 80 A0 87 B4 80 39 0A + +135 reply paket len 15 +87 F0 82 80 80 80 80 80 80 80 80 80 80 27 0A *UNI-T doc ktb and ksg (check FS900X doc) +136 reply paket len 15 +88 F0 82 80 80 80 80 80 80 80 80 80 80 2C 0A + +137 reply paket len 12 +89 F0 82 80 80 3F 30 33 32 33 58 0A *curent displey read + +138 reply paket len 8 +8A F0 82 80 80 81 4B 0A < <3 0> 810.3 +[89 E0 C2 80 80 3F 38 31 30 33 60 0A] +R Manual 0 2 _ _ _ _ SAMPLE _ +<3 0 > <3 0> 810.3 +[89 E0 CA 80 80 3F 38 31 30 33 58 0A] +R Manual 1 2 _ _ _ _ SAMPLE _ +<3 1 > <3 1> 8.103 << wrong !!! +[89 E0 CA 80 80 3F 38 31 30 33 58 0A] +R Manual 1 2 _ _ _ _ SAMPLE _ +<3 1 > <3 1> 8.103 << wrong !!! +[89 E0 CA 80 80 3F 30 38 31 31 56 0A] +R Manual 1 2 _ _ _ _ SAMPLE _ +<3 1 > <3 1> 0.811 +[89 E0 CA 80 80 3F 30 38 31 31 56 0A] +R Manual 1 2 _ _ _ _ SAMPLE _ +<3 1 > <3 1> 0.811 + +To get "stable" output for computer, some workaround is needed. This is +like "range" bits is changed before display output is changet. This is +also true for multimeter display, but this can be ignored due display +"blank". This blank is not signalled in data communication ? + + + + + multiply to pf +8 nF 0 0 x.xxx *1000 +80 nF 1 0 xx.xx *1000 +800 nF 2 0 xxx.x *1000 +8 uF 3 0 x.xxx *1000000 +80 uF 4 0 xx.xx *1000000 +800 uF 5 0 xxx.x *1000000 + + diff --git a/ut70d.c b/ut70d.c new file mode 100644 index 0000000..2704fab --- /dev/null +++ b/ut70d.c @@ -0,0 +1,527 @@ +/* ut70d multimeter communication software + +Copyright (c) 2010 Peter Popovec + +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; either version 2 +of the License, or (at your option) any later version. + +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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, +USA. + +*/ + + + +/* +DEBUG switches +-r raw mode, send command (default command=137) to device and print raw output +-c send command to device, implies raw. If no argument, command "0" is send +-i if set, parse paket and print internals, imples raw + + + + +*/ + +#include +#include +#include +#include +#include +#include +#include + +static void bits (int b); +static int dumpdata (unsigned char *data, int len, FILE * fd); +static int checksum (unsigned char *d, int len); +static void parserawdata (unsigned char *d, int len); +static void printxvalue (unsigned char *d, int len, int dot); +static void printsvalue (unsigned char *d, int len); +static void printmode (unsigned char *buf, int len); +static int initserial (char *n); +static void restoreserial (int fd); +struct termios ts; // save to restore old parameters (or move to initserial if not needed) + +int F8_range[] = { 3, 1, 2, 3, 4, 0, 0, 0 }; +int F0_range[] = { 1, 2, 3, 4, 0, 0, 0, 0 }; +int E8_range[] = { 2, 3, 0, 0, 0, 0, 0, 0 }; +int E0_range[] = { 3, 1, 2, 3, 1, 2, 2, 0 }; //last active range is nS on 5 digit display (800nS) +int E1_range[] = { 1, 2, 3, 1, 2, 3, 0, 0 }; +int D8_range[] = { 1, 0, 0, 0, 0, 0, 0, 0 }; +int A8_range[] = { 1, 2, 0, 0, 0, 0, 0, 0 }; +int A9_range[] = { 1, 2, 0, 0, 0, 0, 0, 0 }; +int B0_range[] = { 2, 3, 0, 0, 0, 0, 0, 0 }; +int B1_range[] = { 2, 3, 0, 0, 0, 0, 0, 0 }; +int FAIL_range[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; +int Hz_range[] = { 2, 3, 1, 2, 3, 1, 2, 3 }; +int PR_range[] = { 0, 2, 0, 0, 0, 0, 0, 0 }; + +int *base_range; // value * 10^base_range +int sub_range; // + +int +eeprom (int fd) +{ + int i; + unsigned char buf[32]; + int len; + + for (i = 0; i < 1; i++) + { + buf[0] = 0xd0; + + buf[1] = ((i/16) & 0x0f) | 0x40; + buf[2] = (i & 0x0f) | 0x40; + buf[3] = 0x0a; + + //debug + buf[1]=0x40; + buf[2]=0x40; + write (fd, buf, 4); + usleep (100000); + if ((len = read (fd, buf, 15)) > 0) + dumpdata (buf, len, stdout); + else + fprintf (stderr, "No response\n"); + usleep(100000); + } + return 0; +} + + +int +main (int argc, char **argv) +{ + int fd, opt; + unsigned char buf[15]; + unsigned char lastbuf[15]; + + int raw = 0; + unsigned char cmd = 137; + + while ((opt = getopt (argc, argv, "irc:")) != -1) + { + switch (opt) + { + case ('i'): + raw |= 3; + break; + case ('r'): + raw |= 1; + break; + case ('c'): + raw |= 1; + cmd = (strtol (optarg, (char **) NULL, 10)) & 255; + break; + } + } + if (argc < 2) + { + fprintf (stderr, "Usage: %s \n", argv[0]); + exit (1); + } + fd = initserial (argv[argc - 1]); + usleep (10000); + + if (raw) + { + int len; + if ((cmd & 0xfe) == 0xd0) + { + return (eeprom (fd)); + } + buf[0] = cmd; + write (fd, buf, 1); + usleep (90000); + if ((len = read (fd, buf, 15)) > 0) + { + dumpdata (buf, len, stdout); + if (raw & 2) + parserawdata (buf, len); + } + else + fprintf (stderr, "No response\n"); + + restoreserial (fd); + return (len <= 0); + } + return 0; +} + +void +bits (int b) +{ + int i; + for (i = 0; i < 8; i++) + { + putchar (b & 0x80 ? '1' : '0'); + b *= 2; + } +} + + +int +dumpdata (unsigned char *d, int len, FILE * fd) +{ + int i,ret=0; + unsigned char xor; + + printf("dump: %d\n",len); + if (len == 1) + return 1; + if (len < 3){ + fprintf (stderr, "DEBUG: paket too short (%d), ignoring\n",len); + ret++; + } + if (checksum (d, len)) + { + fprintf (stderr, "DEBUG: bad checksum, ignoring paket\n"); + ret++; + } + + fprintf (fd, "["); + for (xor = i = 0; i < len; i++) + { + if (d[i] != 0x0a) + fprintf (fd, "%02X ", d[i]); + else + { + fprintf (fd, "0A"); + break; + } + } + fprintf (fd, "]\n"); + return ret; +} + +int +checksum (unsigned char *d, int len) +{ + int i; + unsigned char xor; + if (len < 3) + return 1; + for (xor = i = 0; i < len - 2; i++) + xor = xor ^ d[i]; + xor = xor ^ ((xor & 0xc0) / 4); + xor &= 0x3f; + xor = xor - d[len - 2] + 0x22; + return xor; +} + +void +parserawdata (unsigned char *d, int len) +{ + int val; + if (len < 7) + return; + printmode (d, len); + printsvalue (d, len); + switch (d[0]) + { + if (len != 11) + { + fprintf (stderr, "DEBUG: Wrong paket len=%d 11 wanted\n", len); + return; + } + case (128): + case (129): + case (130): + case (131): + case (132): + case (133): + case (134): + val = d[5] & 0x3f; + val *= 64; + val |= d[6] & 0x3f; + val *= 64; + val |= d[7] & 0x3f; + val *= 64; + val |= d[8] & 0x3f; +// if (d[5] & 20) +// val = -((~val) & 0xffffff); + printf ("%d <%d>", val, val / 4096); + break; + //unknown data + case (135): + case (136): + if (len != 15) + { + fprintf (stderr, "DEBUG: Wrong paket len=%d 15 wanted\n", len); + return; + } + + printf (" {%02X%02X%02X%02X%02X%02X%02X%02X}", d[5], d[6], d[7], d[8], + d[9], d[10], d[11], d[12]); + break; + //bargraph + case (138): + if (len != 8) + { + fprintf (stderr, "DEBUG: Wrong paket len=%d 8 wanted\n", len); + return; + } + + printf ("%d", d[5] - 0x80); + break; +//standard read, ADC value in 4/5 positions + case (137): + case (139): + case (140): + case (141): + case (142): + case (143): + case (144): + case (145): + case (146): + case (147): + case (148): + case (150): + if (len != 12) + { + fprintf (stderr, "DEBUG: Wrong paket len=%d 12 wanted\n", len); + return; + } + printxvalue (d, len, 0); + break; +//read only settings + case (149): + if (len != 7) + { + fprintf (stderr, "DEBUG: Wrong paket len=%d 7 wanted\n", len); + return; + } + break; + } + printf ("\n"); +} + +void +printsvalue (unsigned char *d, int len) +{ + + //byte2 + if (!(d[2] & 0x80)) + { + fprintf (stderr, "DEBUG: bit 7 in byte[2] not 1: "); + dumpdata (d, len, stderr); + } + printf ("%s ", d[2] & 0x40 ? "Manual" : "AUTO"); + printf ("range:%d Unit:%d ", (d[2] / 8) & 7, d[2] & 7); + sub_range = (d[2] / 8) & 7; + if ((d[2] & 7) == 4) + base_range = Hz_range; + if ((d[2] & 7) == 5) + base_range = PR_range; + + //byte 3 bits 5,0,1 unknmown, always 0 ? + if ((d[3] & 0x23)) + { + fprintf (stderr, "DEBUG: bits (1,5,6) not zero in byte[3]: "); + dumpdata (d, len, stderr); + } + if (!(d[3] & 0x80)) + { + fprintf (stderr, "DEBUG: bit 7 in byte[3] not 1: "); + dumpdata (d, len, stderr); + } + printf ("%s %s ", d[3] & 4 ? "BEEP" : "_", d[3] & 0x40 ? "REC" : "_"); + switch (d[3] & 0x18) + { + case 0: + printf ("_"); + break; + case (0x08): + printf ("MAX"); + break; + case (0x10): + printf ("MIN"); + break; + case (0x18): + printf ("AVG"); + break; + } + //byte 4 + if ((d[4] & 0x42)) + { + fprintf (stderr, "DEBUG: bits (1,5,6) not zero in byte[4]: "); + dumpdata (d, len, stderr); + } + if (!(d[4] & 0x80)) + { + fprintf (stderr, "DEBUG: bit 7 in byte[4] not 1: "); + dumpdata (d, len, stderr); + } + printf (" %s %s %s %s %s", d[4] & 0x20 ? "LOWBAT" : "_", + d[4] & 4 ? "Hz" : "_", d[4] & 1 ? "HOLD" : "SAMPLE", + d[4] & 8 ? "OVERFLOW" : "_", d[4] & 0x10 ? "-" : "+"); + +} + +void +printxvalue (unsigned char *d, int len, int dot) +{ + + int i; + int r; +// printf("<%d %d > ",base_range,sub_range); + // if(sub_range==6 && d[1]==0xE0) + // sub_range+=2; + +// printf("<%d %d> ",base_range[sub_range],sub_range); + d += 5; + r = base_range[sub_range] + 1; + for (i = 0; i < 5; i++, d++) + { + if (*d == 0x3f) + { + putchar (' '); + continue; + } + if (*d == 0x3e) + { + putchar ('L'); + continue; + } + if (*d >= 0x30 && *d < 0x3a) + { + if (r == 1) + printf ("."); + r--; + putchar (*d); + continue; + } + { + fprintf (stderr, "DEBUG, unknown character in ascci adc value %02X: ", + *d); + dumpdata (d, len, stderr); + } + } +} + +void +printmode (unsigned char *buf, int len) +{ + + switch (buf[1]) + { //measurment mode + case (0xF8): + printf ("AC V "); + base_range = F8_range; + break; + case (0xF0): + printf ("DC V "); + base_range = F0_range; + break; + case (0xE8): + printf ("DC mV "); + base_range = E8_range; + break; + case (0xE0): + printf ("R "); + base_range = E0_range; //800 + break; + case (0xE1): + printf ("C "); + base_range = E1_range; //8 + break; + case (0xD8): + printf ("D "); + base_range = D8_range; //8 + break; + case (0xA8): + printf ("DC A "); + base_range = A8_range; //8 + break; + case (0xA9): + printf ("AC A "); + base_range = A9_range; //8 + break; + case (0xB0): + printf ("AC mA "); + base_range = B0_range; //80 + break; + case (0xB1): + printf ("DC mA "); + base_range = B1_range; //80 + break; + default: + printf ("?"); + base_range = FAIL_range; + fprintf (stderr, "DEBUG, unknown mode %02X: ", buf[1]); + dumpdata (buf, len, stderr); + } +} + +int +initserial (char *name) +{ + int fd, line; + /* Open the device device and lock it. */ + if ((fd = open (name, O_RDWR | O_NONBLOCK)) == -1) + exit (2); + if (flock (fd, LOCK_EX | LOCK_NB) == -1) + exit (3); + /* Flush input and output queues. */ + if (ioctl (fd, TCFLSH, 2) != 0) + exit (4); + /* Fetch the current terminal parameters. */ + if (ioctl (fd, TCGETS, &ts) != 0) + exit (4); + ts.c_iflag = 0; + ts.c_lflag = 0; + ts.c_oflag = 0; + ts.c_cc[VINTR] = '\0'; + ts.c_cc[VQUIT] = '\0'; + ts.c_cc[VERASE] = '\0'; + ts.c_cc[VKILL] = '\0'; + ts.c_cc[VEOF] = '\0'; + ts.c_cc[VTIME] = '\0'; + ts.c_cc[VMIN] = 1; + ts.c_cc[VSWTC] = '\0'; + ts.c_cc[VSTART] = '\0'; + ts.c_cc[VSTOP] = '\0'; + ts.c_cc[VSUSP] = '\0'; + ts.c_cc[VEOL] = '\0'; + ts.c_cc[VREPRINT] = '\0'; + ts.c_cc[VDISCARD] = '\0'; + ts.c_cc[VWERASE] = '\0'; + ts.c_cc[VLNEXT] = '\0'; + ts.c_cc[VEOL2] = '\0'; + /* Sets hardware control flags: */ + /* 9600 baud = default */ + /* 8 data bits */ + /* Enable receiver */ + /* Normal use RTS/CTS flow control */ + ts.c_cflag = CS8 | CREAD | B9600; + /* Sets the new terminal parameters. */ + if (ioctl (fd, TCSETS, &ts) != 0) + exit (4); + /* Turn off RTS control line. */ + line = TIOCM_RTS; + if (ioctl (fd, TIOCMBIC, &line) != 0) + exit (4); + /* Turn on DTR control line. */ + line = TIOCM_DTR; + if (ioctl (fd, TIOCMBIS, &line) != 0) + exit (4); + return (fd); +} + +void +restoreserial (int fd) +{ + if (flock (fd, LOCK_UN) == -1) + exit (3); + if (close (fd) != 0) + exit (2); +} -- 2.47.3