+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include <math.h>
-#include <string.h>
-#include "protocol.h"
-
-/** Set or clear flags in devc->mqflags. */
-static void setmqf(struct dev_context *devc, uint64_t flags, gboolean set)
-{
- if (set)
- devc->mqflags |= flags;
- else
- devc->mqflags &= ~flags;
-}
-
-/** Decode current type and measured value, Metrahit 12-16. */
-static void decode_ctmv_16(uint8_t ctmv, struct dev_context *devc)
-{
- devc->mq = 0;
- devc->unit = 0;
- devc->mqflags = 0;
-
- switch (ctmv) {
- case 0x00: /* 0000 - */
- break;
- case 0x01: /* 0001 mV DC */
- devc->scale1000 = -1; /* Fall through */
- case 0x02: /* 0010 V DC */
- case 0x03: /* 0011 V AC+DC */
- case 0x04: /* 0100 V AC */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- if (ctmv <= 0x03)
- devc->mqflags |= SR_MQFLAG_DC;
- if (ctmv >= 0x03) {
- devc->mqflags |= SR_MQFLAG_AC;
- if (devc->model >= SR_METRAHIT_16S)
- devc->mqflags |= SR_MQFLAG_RMS;
- }
- break;
- case 0x05: /* 0101 Hz (15S/16S only) */
- case 0x06: /* 0110 kHz (15S/16S only) */
- devc->mq = SR_MQ_FREQUENCY;
- devc->unit = SR_UNIT_HERTZ;
- if (ctmv == 0x06)
- devc->scale1000 = 1;
- break;
- case 0x07: /* 0111 % (15S/16S only) */
- devc->mq = SR_MQ_DUTY_CYCLE;
- devc->unit = SR_UNIT_PERCENTAGE;
- break;
- case 0x08: /* 1000 Diode */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- devc->mqflags |= SR_MQFLAG_DIODE;
- break;
- case 0x09: /* 1001 Ohm, °C */
- case 0x0a: /* 1010 kOhm */
- case 0x0b: /* 1011 MOhm */
- devc->mq = SR_MQ_RESISTANCE; /* Changed to temp. later if req.*/
- devc->unit = SR_UNIT_OHM;
- devc->scale1000 = ctmv - 0x09;
- break;
- case 0x0c: /* 1100 nF (15S/16S only) */
- case 0x0d: /* 1101 µF (15S/16S only) */
- devc->mq = SR_MQ_CAPACITANCE;
- devc->unit = SR_UNIT_FARAD;
- if (ctmv == 0x0c)
- devc->scale1000 = -3;
- else
- devc->scale1000 = -2;
- break;
- case 0x0e: /* mA, µA */
- devc->scale1000 = -1; /* Fall through. */
- case 0x0f: /* A */
- devc->mq = SR_MQ_CURRENT;
- devc->unit = SR_UNIT_AMPERE;
- if (devc->model == SR_METRAHIT_16S)
- devc->mqflags |= SR_MQFLAG_RMS;
- /* 16I A only with clamp, RMS questionable. */
- break;
- }
-}
-
-/**
- * Decode range/sign/acdc byte special chars (Metrahit 12-16).
- *
- * @param[in] spc Special characters 1 and 2 (s1 | (s2 << 4)).
- */
-static void decode_rs_16(uint8_t rs, struct dev_context *devc)
-{
- sr_spew("decode_rs_16(%d) scale = %f", rs, devc->scale);
-
- if (rs & 0x08) /* Sign */
- devc->scale *= -1.0;
-
- if (devc->mq == SR_MQ_CURRENT) {
- if (rs & 0x04) /* Current is AC */
- devc->mqflags |= SR_MQFLAG_AC;
- else
- devc->mqflags |= SR_MQFLAG_DC;
- }
-
- switch (rs & 0x03) {
- case 0:
- if (devc->mq == SR_MQ_VOLTAGE) /* V */
- devc->scale *= 0.1;
- else if (devc->mq == SR_MQ_CURRENT) /* 000.0 µA */
- devc->scale *= 0.0000001; /* Untested! */
- else if (devc->mq == SR_MQ_RESISTANCE) {
- if (devc->buflen >= 10) {
- /* °C with 10 byte msg type, otherwise GOhm. */
- devc->mq = SR_MQ_TEMPERATURE;
- devc->unit = SR_UNIT_CELSIUS;
- devc->scale *= 0.01;
- } else if ((devc->scale1000 == 2)) {
- /* 16I Iso 500/1000V 3 GOhm */
- devc->scale *= 0.1;
- }
- }
- break;
- case 1:
- devc->scale *= 0.0001;
- break;
- case 2:
- devc->scale *= 0.001;
- break;
- case 3:
- devc->scale *= 0.01;
- break;
- }
-}
-
-/**
- * Decode special chars, Metrahit 12-16.
- *
- * @param[in] spc Special characters 1 and 2 (s1 | (s2 << 4)).
- */
-static void decode_spc_16(uint8_t spc, struct dev_context *devc)
-{
- /* xxxx1xxx ON */
- /* TODO: What does that mean? Power on? The 16I sets this. */
- /* xxxxx1xx BEEP */
- /* xxxxxx1x Low battery */
- /* xxxxxxx1 FUSE */
- /* 1xxxxxxx MIN */
- setmqf(devc, SR_MQFLAG_MIN, spc & 0x80);
-
- /* x1xxxxxx MAN */
- setmqf(devc, SR_MQFLAG_AUTORANGE, !(spc & 0x40));
-
- /* xx1xxxxx DATA */
- setmqf(devc, SR_MQFLAG_HOLD, spc & 0x20);
-
- /* xxx1xxxx MAX */
- setmqf(devc, SR_MQFLAG_MAX, spc & 0x10);
-}
-
-/** Decode current type and measured value, Metrahit 18. */
-static void decode_ctmv_18(uint8_t ctmv, struct dev_context *devc)
-{
- devc->mq = 0;
- devc->unit = 0;
- devc->mqflags = 0;
-
- switch (ctmv) {
- case 0x00: /* 0000 - */
- break;
- case 0x01: /* 0001 V AC */
- case 0x02: /* 0010 V AC+DC */
- case 0x03: /* 0011 V DC */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- if (ctmv <= 0x02)
- devc->mqflags |= (SR_MQFLAG_AC | SR_MQFLAG_RMS);
- if (ctmv >= 0x02)
- devc->mqflags |= SR_MQFLAG_DC;
- break;
- case 0x04: /* 0100 Ohm/Ohm with buzzer */
- devc->mq = SR_MQ_RESISTANCE;
- devc->unit = SR_UNIT_OHM;
- break;
- case 0x05: /* 0101 Diode/Diode with buzzer */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- devc->mqflags |= SR_MQFLAG_DIODE;
- break;
- case 0x06: /* 0110 °C */
- devc->mq = SR_MQ_TEMPERATURE;
- devc->unit = SR_UNIT_CELSIUS;
- break;
- case 0x07: /* 0111 F */
- devc->mq = SR_MQ_CAPACITANCE;
- devc->unit = SR_UNIT_FARAD;
- break;
- case 0x08: /* 1000 mA DC */
- case 0x09: /* 1001 A DC */
- case 0x0a: /* 1010 mA AC+DC */
- case 0x0b: /* 1011 A AC+DC */
- devc->mq = SR_MQ_CURRENT;
- devc->unit = SR_UNIT_AMPERE;
- devc->mqflags |= SR_MQFLAG_DC;
- if (ctmv >= 0x0a)
- devc->mqflags |= (SR_MQFLAG_AC | SR_MQFLAG_RMS);
- if ((ctmv == 0x08) || (ctmv == 0x0a))
- devc->scale1000 = -1;
- break;
- case 0x0c: /* 1100 Hz */
- devc->mq = SR_MQ_FREQUENCY;
- devc->unit = SR_UNIT_HERTZ;
- break;
- case 0x0d: /* 1101 dB */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_DECIBEL_VOLT;
- devc->mqflags |= SR_MQFLAG_AC; /* dB available for AC only */
- break;
- case 0x0e: /* 1110 Events AC, Events AC+DC. Actually delivers just
- * current voltage via IR, nothing more. */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- devc->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_DC | SR_MQFLAG_RMS;
- break;
- case 0x0f: /* 1111 Clock */
- devc->mq = SR_MQ_TIME;
- devc->unit = SR_UNIT_SECOND;
- devc->mqflags |= SR_MQFLAG_DURATION;
- break;
- }
-}
-
-/**
- * Decode range/sign/acdc byte special chars, Metrahit 18.
- *
- * @param[in] rs Rance/sign byte.
- */
-static void decode_rs_18(uint8_t rs, struct dev_context *devc)
-{
- int range;
-
- /* Sign */
- if (((devc->scale > 0) && (rs & 0x08)) ||
- ((devc->scale < 0) && !(rs & 0x08)))
- devc->scale *= -1.0;
-
- /* Range */
- range = rs & 0x07;
- switch (devc->mq) {
- case SR_MQ_VOLTAGE:
- if (devc->unit == SR_UNIT_DECIBEL_VOLT) {
- devc->scale *= pow(10.0, -2);
- /*
- * When entering relative mode, the device switches
- * from 10 byte to 6 byte msg format. Unfortunately
- * it switches back to 10 byte when the second value
- * is measured, so that's not sufficient to
- * identify relative mode.
- */
- }
- else if (devc->vmains_29S)
- devc->scale *= pow(10.0, range - 2);
- else
- devc->scale *= pow(10.0, range - 5);
- break;
- case SR_MQ_CURRENT:
- if (devc->scale1000 == -1)
- devc->scale *= pow(10.0, range - 5);
- else
- devc->scale *= pow(10.0, range - 4);
- break;
- case SR_MQ_RESISTANCE:
- devc->scale *= pow(10.0, range - 2);
- break;
- case SR_MQ_FREQUENCY:
- devc->scale *= pow(10.0, range - 3);
- break;
- case SR_MQ_TEMPERATURE:
- devc->scale *= pow(10.0, range - 2);
- break;
- case SR_MQ_CAPACITANCE:
- devc->scale *= pow(10.0, range - 14);
- break;
- /* TODO: 29S Mains measurements. */
- }
-}
-
-/**
- * Decode special chars, Metrahit 18.
- *
- * @param[in] spc Special characters 1 and 2 (s1 | (s2 << 4)).
- */
-static void decode_spc_18(uint8_t spc, struct dev_context *devc)
-{
- /* xxxx1xxx ZERO */
- /* xxxxx1xx BEEP */
- /* xxxxxx1x Low battery */
- /* xxxxxxx1 Fuse */
-
- if (devc->mq == SR_MQ_TIME) {
- /* xxx1xxxx Clock running: 1; stop: 0 */
- sr_spew("Clock running: %d", spc >> 4);
- } else {
- /* 1xxxxxxx MAN */
- setmqf(devc, SR_MQFLAG_AUTORANGE, !(spc & 0x80));
-
- /* x1xxxxxx MIN */
- setmqf(devc, SR_MQFLAG_MIN, spc & 0x40);
-
- /* xx1xxxxx MAX */
- setmqf(devc, SR_MQFLAG_MAX, spc & 0x20);
-
- /* xxx1xxxx DATA */
- setmqf(devc, SR_MQFLAG_HOLD, spc & 0x10);
- }
-}
-
-/**
- * Decode current type and measured value, Metrahit 2x.
- *
- * @param[in] ctmv Current type and measured value (v1 | (v2 << 4)).
- */
-static void decode_ctmv_2x(uint8_t ctmv, struct dev_context *devc)
-{
- if ((ctmv > 0x1c) || (!devc)) {
- sr_err("decode_ctmv_2x(%d): invalid param(s)!", ctmv);
- return;
- }
-
- devc->mq = 0;
- devc->unit = 0;
- devc->mqflags = 0;
-
- switch (ctmv) {
- /* 00000 unused */
- case 0x01: /* 00001 V DC */
- case 0x02: /* 00010 V AC+DC */
- case 0x03: /* 00011 V AC */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- if (ctmv <= 0x02)
- devc->mqflags |= SR_MQFLAG_DC;
- if (ctmv >= 0x02) {
- devc->mqflags |= SR_MQFLAG_AC;
- if (devc->model >= SR_METRAHIT_24S)
- devc->model |= SR_MQFLAG_RMS;
- }
- break;
- case 0x04: /* 00100 mA DC */
- case 0x05: /* 00101 mA AC+DC */
- devc->scale1000 = -1;
- case 0x06: /* 00110 A DC */
- case 0x07: /* 00111 A AC+DC */
- devc->mq = SR_MQ_CURRENT;
- devc->unit = SR_UNIT_AMPERE;
- devc->mqflags |= SR_MQFLAG_DC;
- if ((ctmv == 0x05) || (ctmv == 0x07)) {
- devc->mqflags |= SR_MQFLAG_AC;
- if (devc->model >= SR_METRAHIT_24S)
- devc->mqflags |= SR_MQFLAG_RMS;
- }
- break;
- case 0x08: /* 01000 Ohm */
- devc->mq = SR_MQ_RESISTANCE;
- devc->unit = SR_UNIT_OHM;
- break;
- case 0x09: /* 01001 F */
- devc->mq = SR_MQ_CAPACITANCE;
- devc->unit = SR_UNIT_FARAD;
- devc->scale *= 0.1;
- break;
- case 0x0a: /* 01010 dB */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_DECIBEL_VOLT;
- devc->mqflags |= SR_MQFLAG_AC;
- break;
- case 0x0b: /* 01011 Hz U ACDC */
- case 0x0c: /* 01100 Hz U AC */
- devc->mq = SR_MQ_FREQUENCY;
- devc->unit = SR_UNIT_HERTZ;
- devc->mqflags |= SR_MQFLAG_AC;
- if (ctmv <= 0x0b)
- devc->mqflags |= SR_MQFLAG_DC;
- break;
- case 0x0d: /* 01101 W on power, mA range (29S only) */
- case 0x0e: /* 01110 W on power, A range (29S only) */
- /* TODO: Differences between Send Mode and bidir protocol here */
- devc->mq = SR_MQ_POWER;
- devc->unit = SR_UNIT_WATT;
- break;
- case 0x0f: /* 01111 Diode */
- case 0x10: /* 10000 Diode with buzzer (actually cont. with voltage) */
- devc->unit = SR_UNIT_VOLT;
- if (ctmv == 0x0f) {
- devc->mq = SR_MQ_VOLTAGE;
- devc->mqflags |= SR_MQFLAG_DIODE;
- devc->scale *= 0.1;
- } else {
- devc->mq = SR_MQ_CONTINUITY;
- devc->scale *= 0.00001;
- }
- devc->unit = SR_UNIT_VOLT;
- break;
- case 0x11: /* 10001 Ohm with buzzer */
- devc->mq = SR_MQ_CONTINUITY;
- devc->unit = SR_UNIT_OHM;
- devc->scale1000 = -1;
- break;
- case 0x12: /* 10010 Temperature */
- devc->mq = SR_MQ_TEMPERATURE;
- devc->unit = SR_UNIT_CELSIUS;
- /* This can be Fahrenheit. That is detected by range=4 later. */
- break;
- /* 0x13 10011, 0x14 10100 unsed */
- case 0x15: /* 10101 Press (29S only) */
- /* TODO: What does that mean? Possibly phase shift?
- Then we need a unit/flag for it. */
- devc->mq = SR_MQ_GAIN;
- devc->unit = SR_UNIT_PERCENTAGE;
- break;
- case 0x16: /* 10110 Pulse W (29S only) */
- /* TODO: Own unit and flag for this! */
- devc->mq = SR_MQ_POWER;
- devc->unit = SR_UNIT_WATT;
- break;
- case 0x17: /* 10111 TRMS V on mains (29S only) */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_VOLT;
- devc->mqflags |= (SR_MQFLAG_AC | SR_MQFLAG_RMS);
- devc->vmains_29S = TRUE;
- break;
- case 0x18: /* 11000 Counter (zero crossings of a signal) */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_UNITLESS;
- break;
- case 0x19: /* 11001 Events U ACDC */
- case 0x1a: /* 11010 Events U AC */
- /* TODO: No unit or flags for this yet! */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_UNITLESS;
- devc->mqflags |= SR_MQFLAG_AC;
- if (ctmv <= 0x19)
- devc->mqflags |= SR_MQFLAG_DC;
- break;
- case 0x1b: /* 11011 pulse on mains (29S only) */
- /* TODO: No unit or flags for this yet! */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_UNITLESS;
- devc->mqflags |= SR_MQFLAG_AC;
- break;
- case 0x1c: /* 11100 dropout on mains (29S only) */
- /* TODO: No unit or flags for this yet! */
- devc->mq = SR_MQ_VOLTAGE;
- devc->unit = SR_UNIT_UNITLESS;
- devc->mqflags |= SR_MQFLAG_AC;
- break;
- default:
- sr_err("decode_ctmv_2x(%d, ...): Unknown ctmv!");
- break;
- }
-}
-
-/**
- * Decode range/sign/acdc byte special chars, Metrahit 2x.
- *
- * @param[in] rs Rance/sign byte.
- */
-static void decode_rs_2x(uint8_t rs, struct dev_context *devc)
-{
- int range;
-
- /* Sign */
- if (((devc->scale > 0) && (rs & 0x08)) ||
- ((devc->scale < 0) && !(rs & 0x08)))
- devc->scale *= -1.0;
-
- /* Range */
- range = rs & 0x07;
- switch (devc->mq) {
- case SR_MQ_VOLTAGE:
- if (devc->unit == SR_UNIT_DECIBEL_VOLT)
- devc->scale *= pow(10.0, -3);
- else if (devc->vmains_29S)
- devc->scale *= pow(10.0, range - 2);
- else if(devc->mqflags & SR_MQFLAG_AC)
- devc->scale *= pow(10.0, range - 6);
- else /* "Undocumented feature": Between AC and DC
- scaling differs by 1. */
- devc->scale *= pow(10.0, range - 5);
- break;
- case SR_MQ_CURRENT:
- if (devc->scale1000 == -1)
- devc->scale *= pow(10.0, range - 5);
- else
- devc->scale *= pow(10.0, range - 4);
- break;
- case SR_MQ_RESISTANCE:
- devc->scale *= pow(10.0, range - 3);
- break;
- case SR_MQ_FREQUENCY:
- devc->scale *= pow(10.0, range - 3);
- break;
- case SR_MQ_TEMPERATURE:
- if (range == 4) /* Indicator for °F */
- devc->unit = SR_UNIT_FAHRENHEIT;
- devc->scale *= pow(10.0, - 2);
- break;
- case SR_MQ_CAPACITANCE:
- devc->scale *= pow(10.0, range - 13);
- break;
- /* TODO: 29S Mains measurements. */
- }
-}
-
-/**
- * Decode special chars (Metrahit 2x).
- *
- * @param[in] spc Special characters 1 and 2 (s1 | (s2 << 4)).
- */
-static void decode_spc_2x(uint8_t spc, struct dev_context *devc)
-{
- /* xxxxxxx1 Fuse */
-
- /* xxxxxx1x Low battery */
-
- /* xxxxx1xx BEEP */
-
- /* xxxx1xxx ZERO */
-
- /* xxx1xxxx DATA */
- setmqf(devc, SR_MQFLAG_HOLD, spc & 0x10);
-
- /* x11xxxxx unused */
- /* 1xxxxxxx MAN */
- setmqf(devc, SR_MQFLAG_AUTORANGE, !(spc & 0x80));
-}
-
-/** Clean range and sign. */
-static void clean_rs_v(struct dev_context *devc)
-{
- devc->value = 0.0;
- devc->scale = 1.0;
-}
-
-/** Clean current type, measured variable, range and sign. */
-static void clean_ctmv_rs_v(struct dev_context *devc)
-{
- devc->mq = 0;
- devc->unit = 0;
- devc->mqflags = 0;
- devc->scale1000 = 0;
- devc->vmains_29S = FALSE;
- clean_rs_v(devc);
-}
-
-/** Send prepared value. */
-static void send_value(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_datafeed_analog analog;
- struct sr_datafeed_packet packet;
-
- devc = sdi->priv;
-
- memset(&analog, 0, sizeof(analog));
- analog.probes = sdi->probes;
- analog.num_samples = 1;
- analog.mq = devc->mq;
- analog.unit = devc->unit;
- analog.mqflags = devc->mqflags;
- analog.data = &devc->value;
-
- memset(&packet, 0, sizeof(packet));
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- sr_session_send(devc->cb_data, &packet);
-
- devc->num_samples++;
-}
-
-/** Process 6-byte data message, Metrahit 1x/2x. */
-static void process_msg_dta_6(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- int cnt;
- uint8_t dgt;
-
- devc = sdi->priv;
- clean_rs_v(devc);
-
- /* Byte 0, range and sign */
- if (devc->model <= SR_METRAHIT_16X)
- decode_rs_16(bc(devc->buf[0]), devc);
- else if (devc->model < SR_METRAHIT_2X)
- decode_rs_18(bc(devc->buf[0]), devc);
- else
- decode_rs_2x(bc(devc->buf[0]), devc);
-
- /* Bytes 1-5, digits (ls first). */
- for (cnt = 0; cnt < 5; cnt++) {
- dgt = bc(devc->buf[1 + cnt]);
- if (dgt >= 10) {
- /* 10 Overload; on model <= 16X also 11 possible. */
- devc->value = NAN;
- devc->scale = 1.0;
- break;
- }
- devc->value += pow(10.0, cnt) * dgt;
- }
- sr_spew("process_msg_dta_6() value=%f scale=%f scalet=%d",
- devc->value, devc->scale, devc->scale1000);
- if (devc->value != NAN)
- devc->value *= devc->scale * pow(1000.0, devc->scale1000);
-
- /* Create and send packet. */
- send_value(sdi);
-}
-
-/** Process 5-byte info message, Metrahit 1x/2x. */
-static void process_msg_inf_5(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- enum model model;
-
- devc = sdi->priv;
-
- clean_ctmv_rs_v(devc);
-
- /* Process byte 0 */
- model = sr_gmc_decode_model_sm(bc(devc->buf[0]));
- if (model != devc->model) {
- sr_warn("Model mismatch in data: Detected %s, now %s",
- sr_gmc_model_str(devc->model),
- sr_gmc_model_str(model));
- }
-
- /* Process bytes 1-4 */
- if (devc->model <= SR_METRAHIT_16X) {
- decode_ctmv_16(bc(devc->buf[1]), devc);
- decode_spc_16(bc(devc->buf[2]) | (bc(devc->buf[3]) << 4), devc);
- decode_rs_16(bc(devc->buf[4]), devc);
- } else if (devc->model <= SR_METRAHIT_18S) {
- decode_ctmv_18(bc(devc->buf[1]), devc);
- decode_spc_18(bc(devc->buf[2]) | (bc(devc->buf[3]) << 4), devc);
- decode_rs_18(bc(devc->buf[4]), devc);
- } else { /* Must be Metrahit 2x */
- decode_ctmv_2x(bc(devc->buf[1]), devc);
- decode_spc_2x(bc(devc->buf[2]) | (bc(devc->buf[3]) << 4), devc);
- decode_rs_2x(bc(devc->buf[4]), devc);
- }
-}
-
-/** Process 10-byte info/data message, Metrahit 15+. */
-static void process_msg_inf_10(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- int cnt;
- uint8_t dgt;
-
- devc = sdi->priv;
-
- process_msg_inf_5(sdi);
-
- /* Now decode numbers */
- for (cnt = 0; cnt < 5; cnt++) {
- dgt = bc(devc->buf[5 + cnt]);
- if (dgt >= 10) { /* Overload */
- devc->value = NAN;
- devc->scale = 1.0;
- break;
- }
- devc->value += pow(10.0, cnt) * dgt;
- }
- sr_spew("process_msg_inf_10() value=%f scale=%f scalet=%d",
- devc->value, devc->scale, devc->scale1000);
-
- if (devc->value != NAN)
- devc->value *= devc->scale * pow(1000.0, devc->scale1000);
-
- /* Create and send packet. */
- send_value(sdi);
-}
-
-/** Decode send interval (Metrahit 2x only). */
-static const char *decode_send_interval(uint8_t si)
-{
- switch (si) {
- case 0x00:
- return "0.05";
- case 0x01:
- return "0.1";
- case 0x02:
- return "0.2";
- case 0x03:
- return "0.5";
- case 0x04:
- return "00:01";
- case 0x05:
- return "00:02";
- case 0x06:
- return "00:05";
- case 0x07:
- return "00:10";
- case 0x08:
- return "00:20";
- case 0x09:
- return "00:30";
- case 0x0a:
- return "01:00";
- case 0x0b:
- return "02:00";
- case 0x0c:
- return "05:00";
- case 0x0d:
- return "10:00";
- case 0x0e:
- return "----";
- case 0x0f:
- return "data";
- default:
- return "Unknown value";
- }
-}
-
-/** Process 13-byte info/data message, Metrahit 2x. */
-static void process_msg_inf_13(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- enum model model;
- int cnt;
- uint8_t dgt;
-
- devc = sdi->priv;
-
- clean_ctmv_rs_v(devc);
-
- /* Byte 0, model. */
- model = sr_gmc_decode_model_sm(bc(devc->buf[0]));
- if (model != devc->model) {
- sr_warn("Model mismatch in data: Detected %s, now %s",
- sr_gmc_model_str(devc->model),
- sr_gmc_model_str(model));
- }
-
- /* Bytes 1-4, 11. */
- decode_ctmv_2x(bc(devc->buf[1]) | (bc(devc->buf[11]) << 4), devc);
- decode_spc_2x(bc(devc->buf[2]) | (bc(devc->buf[3]) << 4), devc);
- decode_rs_2x(bc(devc->buf[4]), devc);
-
- /* Bytes 5-10, digits (ls first). */
- for (cnt = 0; cnt < 6; cnt++) {
- dgt = bc(devc->buf[5 + cnt]);
- if (dgt == 10) { /* Overload */
- devc->value = NAN;
- devc->scale = 1.0;
- break;
- }
- devc->value += pow(10.0, cnt) * dgt;
- }
- sr_spew("process_msg_inf_13() value=%f scale=%f scale1000=%d mq=%d "
- "unit=%d mqflags=0x%02llx", devc->value, devc->scale,
- devc->scale1000, devc->mq, devc->unit, devc->mqflags);
- if (devc->value != NAN)
- devc->value *= devc->scale * pow(1000.0, devc->scale1000);
-
- /* Byte 12, Send Interval */
- sr_spew("Send interval: %s", decode_send_interval(bc(devc->buf[12])));
-
- /* Create and send packet. */
- send_value(sdi);
-}
-
-SR_PRIV int gmc_mh_1x_2x_receive_data(int fd, int revents, void *cb_data)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct sr_serial_dev_inst *serial;
- uint8_t buf, msgt;
- int len;
- gdouble elapsed_s;
-
- (void)fd;
-
- if (!(sdi = cb_data))
- return TRUE;
-
- if (!(devc = sdi->priv))
- return TRUE;
-
- serial = sdi->conn;
-
- if (revents == G_IO_IN) { /* Serial data arrived. */
- while (GMC_BUFSIZE - devc->buflen - 1 > 0) {
- len = serial_read(serial, devc->buf + devc->buflen, 1);
- if (len < 1)
- break;
- buf = *(devc->buf + devc->buflen);
- sr_spew("read 0x%02x/%d/%d", buf, buf, buf & MSGC_MASK);
- devc->buflen += len;
- if (!devc->settings_ok) {
- /*
- * If no device type/settings record processed
- * yet, wait for one.
- */
- if ((devc->buf[0] & MSGID_MASK) != MSGID_INF) {
- devc->buflen = 0;
- continue;
- }
- devc->settings_ok = TRUE;
- }
-
- msgt = devc->buf[0] & MSGID_MASK;
- switch (msgt) {
- case MSGID_INF:
- if (devc->buflen == 13) {
- process_msg_inf_13(sdi);
- devc->buflen = 0;
- continue;
- } else if ((devc->buflen == 10) &&
- (devc->model <= SR_METRAHIT_18S)) {
- process_msg_inf_10(sdi);
- devc->buflen = 0;
- continue;
- }
- else if ((devc->buflen >= 5) &&
- (devc->buf[devc->buflen - 1] &
- MSGID_MASK) != MSGID_DATA) {
- /*
- * Char just received is beginning
- * of next message.
- */
- process_msg_inf_5(sdi);
- devc->buf[0] =
- devc->buf[devc->buflen - 1];
- devc->buflen = 1;
- continue;
- }
- break;
- case MSGID_DTA:
- case MSGID_D10:
- if (devc->buflen == 6) {
- process_msg_dta_6(sdi);
- devc->buflen = 0;
- }
- break;
- case MSGID_DATA:
- sr_err("Comm error, unexpected data byte!");
- devc->buflen = 0;
- break;
- }
- }
- }
-
- /* If number of samples or time limit reached, stop aquisition. */
- if (devc->limit_samples && (devc->num_samples >= devc->limit_samples))
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
-
- if (devc->limit_msec) {
- elapsed_s = g_timer_elapsed(devc->elapsed_msec, NULL);
- if ((elapsed_s * 1000) >= devc->limit_msec)
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
- }
-
- return TRUE;
-}
-
-/** Decode model in "send mode". */
-SR_PRIV int sr_gmc_decode_model_sm(uint8_t mcode)
-{
- if (mcode > 0xf) {
- sr_err("decode_model(%d): Model code 0..15 expected!", mcode);
- return SR_METRAHIT_NONE;
- }
-
- switch(mcode) {
- case 0x04: /* 0100b */
- return SR_METRAHIT_12S;
- case 0x08: /* 1000b */
- return SR_METRAHIT_13S14A;
- case 0x09: /* 1001b */
- return SR_METRAHIT_14S;
- case 0x0A: /* 1010b */
- return SR_METRAHIT_15S;
- case 0x0B: /* 1011b */
- return SR_METRAHIT_16S;
- case 0x06: /* 0110b (undocumented by GMC!) */
- return SR_METRAHIT_16I;
- case 0x0D: /* 1101b */
- return SR_METRAHIT_18S;
- case 0x02: /* 0010b */
- return SR_METRAHIT_22SM;
- case 0x03: /* 0011b */
- return SR_METRAHIT_23S;
- case 0x0f: /* 1111b */
- return SR_METRAHIT_24S;
- case 0x05: /* 0101b */
- return SR_METRAHIT_25SM;
- case 0x01: /* 0001b */
- return SR_METRAHIT_26S;
- case 0x0c: /* 1100b */
- return SR_METRAHIT_28S;
- case 0x0e: /* 1110b */
- return SR_METRAHIT_29S;
- default:
- sr_err("Unknown model code %d!", mcode);
- return SR_METRAHIT_NONE;
- }
-}
-
-/**
- * Decode model in bidirectional mode.
- *
- * @param[in] mcode Model code.
- *
- * @return Model code.
- */
-SR_PRIV int sr_gmc_decode_model_bidi(uint8_t mcode)
-{
- switch (mcode) {
- case 2:
- return SR_METRAHIT_22SM;
- case 3:
- return SR_METRAHIT_23S;
- case 4:
- return SR_METRAHIT_24S;
- case 5:
- return SR_METRAHIT_25SM;
- case 1:
- return SR_METRAHIT_26S;
- case 12:
- return SR_METRAHIT_28S;
- case 14:
- return SR_METRAHIT_29S;
- default:
- sr_err("Unknown model code %d!", mcode);
- return SR_METRAHIT_NONE;
- }
-}
-
-SR_PRIV const char *sr_gmc_model_str(enum model mcode)
-{
- switch (mcode) {
- case SR_METRAHIT_NONE:
- return "-uninitialized model variable-";
- case SR_METRAHIT_12S:
- return "METRAHit 12S";
- case SR_METRAHIT_13S14A:
- return "METRAHit 13S/14A";
- case SR_METRAHIT_14S:
- return "METRAHit 14S";
- case SR_METRAHIT_15S:
- return "METRAHit 15S";
- case SR_METRAHIT_16S:
- return "METRAHit 16S";
- case SR_METRAHIT_16I:
- return "METRAHit 16I";
- case SR_METRAHIT_18S:
- return "METRAHit 18S";
- case SR_METRAHIT_22SM:
- return "METRAHit 22S/M";
- case SR_METRAHIT_23S:
- return "METRAHit 23S";
- case SR_METRAHIT_24S:
- return "METRAHit 24S";
- case SR_METRAHIT_25SM:
- return "METRAHit 25S/M";
- case SR_METRAHIT_26S:
- return "METRAHit 26S";
- case SR_METRAHIT_28S:
- return "METRAHit 28S";
- case SR_METRAHIT_29S:
- return "METRAHit 29S";
- default:
- return "Unknown model code";
- }
-}
projects / libsigrok.git / blobdiff