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libsigrok/src/hardware/serial-dmm/api.c

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
* Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
static const uint32_t scanopts[] = {
SR_CONF_CONN,
SR_CONF_SERIALCOMM,
};
static const uint32_t devopts[] = {
SR_CONF_MULTIMETER,
SR_CONF_CONTINUOUS,
SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
SR_CONF_LIMIT_MSEC | SR_CONF_SET,
};
static int dev_clear(const struct sr_dev_driver *di)
{
return std_dev_clear(di, NULL);
}
static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
struct dmm_info *dmm;
struct sr_config *src;
GSList *l, *devices;
const char *conn, *serialcomm;
struct sr_dev_inst *sdi;
struct drv_context *drvc;
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
int dropped, ret;
size_t len;
uint8_t buf[128];
dmm = (struct dmm_info *)di;
conn = serialcomm = NULL;
for (l = options; l; l = l->next) {
src = l->data;
switch (src->key) {
case SR_CONF_CONN:
conn = g_variant_get_string(src->data, NULL);
break;
case SR_CONF_SERIALCOMM:
serialcomm = g_variant_get_string(src->data, NULL);
break;
}
}
if (!conn)
return NULL;
if (!serialcomm)
serialcomm = dmm->conn;
serial = sr_serial_dev_inst_new(conn, serialcomm);
if (serial_open(serial, SERIAL_RDWR) != SR_OK)
return NULL;
sr_info("Probing serial port %s.", conn);
drvc = di->context;
devices = NULL;
serial_flush(serial);
/* Request a packet if the DMM requires this. */
if (dmm->packet_request) {
if ((ret = dmm->packet_request(serial)) < 0) {
sr_err("Failed to request packet: %d.", ret);
return FALSE;
}
}
/*
* There's no way to get an ID from the multimeter. It just sends data
* periodically (or upon request), so the best we can do is check if
* the packets match the expected format.
*/
/* Let's get a bit of data and see if we can find a packet. */
len = sizeof(buf);
ret = serial_stream_detect(serial, buf, &len, dmm->packet_size,
dmm->packet_valid, 3000,
dmm->baudrate);
if (ret != SR_OK)
goto scan_cleanup;
/*
* If we dropped more than two packets worth of data, something is
* wrong. We shouldn't quit however, since the dropped bytes might be
* just zeroes at the beginning of the stream. Those can occur as a
* combination of the nonstandard cable that ships with some devices
* and the serial port or USB to serial adapter.
*/
dropped = len - dmm->packet_size;
if (dropped > 2 * dmm->packet_size)
sr_warn("Had to drop too much data.");
sr_info("Found device on port %s.", conn);
sdi = g_malloc0(sizeof(struct sr_dev_inst));
sdi->status = SR_ST_INACTIVE;
sdi->vendor = g_strdup(dmm->vendor);
sdi->model = g_strdup(dmm->device);
devc = g_malloc0(sizeof(struct dev_context));
sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
sdi->priv = devc;
sdi->driver = di;
sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
scan_cleanup:
serial_close(serial);
return devices;
}
static GSList *dev_list(const struct sr_dev_driver *di)
{
return ((struct drv_context *)(di->context))->instances;
}
static int cleanup(const struct sr_dev_driver *di)
{
return dev_clear(di);
}
static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
struct dev_context *devc;
(void)cg;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
if (!(devc = sdi->priv)) {
sr_err("sdi->priv was NULL.");
return SR_ERR_BUG;
}
switch (key) {
case SR_CONF_LIMIT_SAMPLES:
devc->limit_samples = g_variant_get_uint64(data);
break;
case SR_CONF_LIMIT_MSEC:
devc->limit_msec = g_variant_get_uint64(data);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
(void)sdi;
(void)cg;
switch (key) {
case SR_CONF_SCAN_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
break;
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
if (!(devc = sdi->priv)) {
sr_err("sdi->priv was NULL.");
return SR_ERR_BUG;
}
devc->cb_data = cb_data;
/*
* Reset the number of samples to take. If we've already collected our
* quota, but we start a new session, and don't reset this, we'll just
* quit without acquiring any new samples.
*/
devc->num_samples = 0;
devc->starttime = g_get_monotonic_time();
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Poll every 50ms, or whenever some data comes in. */
serial = sdi->conn;
serial_source_add(sdi->session, serial, G_IO_IN, 50,
receive_data, (void *)sdi);
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
sdi->conn, LOG_PREFIX);
}
#define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, \
DELAY, REQUEST, VALID, PARSE, DETAILS) \
&(struct dmm_info) { \
{ \
.name = ID, \
.longname = VENDOR " " MODEL, \
.api_version = 1, \
.init = init, \
.cleanup = cleanup, \
.scan = scan, \
.dev_list = dev_list, \
.dev_clear = dev_clear, \
.config_get = NULL, \
.config_set = config_set, \
.config_list = config_list, \
.dev_open = std_serial_dev_open, \
.dev_close = std_serial_dev_close, \
.dev_acquisition_start = dev_acquisition_start, \
.dev_acquisition_stop = dev_acquisition_stop, \
.context = NULL, \
}, \
VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, DELAY, \
REQUEST, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
}
SR_PRIV const struct dmm_info *serial_dmm_drivers[] = {
DMM(
"bbcgm-2010", metex14,
"BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
sr_m2110_packet_valid, sr_m2110_parse,
NULL
),
DMM(
"digitek-dt4000zc", fs9721,
"Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_10_temp_c
),
DMM(
"tekpower-tp4000ZC", fs9721,
"TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_10_temp_c
),
DMM(
"metex-me31", metex14,
"Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"peaktech-3410", metex14,
"Peaktech", "3410", "600/7n2/rts=0/dtr=1", 600,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"mastech-mas345", metex14,
"MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"mastech-ms8250b", fs9721,
"MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
NULL
),
DMM(
"va-va18b", fs9721,
"V&A", "VA18B", "2400/8n1", 2400,
FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_01_temp_c
),
DMM(
"va-va40b", fs9721,
"V&A", "VA40B", "2400/8n1", 2400,
FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_max_c_min
),
DMM(
"metex-m3640d", metex14,
"Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"metex-m4650cr", metex14,
"Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"peaktech-4370", metex14,
"PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"pce-pce-dm32", fs9721,
"PCE", "PCE-DM32", "2400/8n1", 2400,
FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_01_10_temp_f_c
),
DMM(
"radioshack-22-168", metex14,
"RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"radioshack-22-805", metex14,
"RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"radioshack-22-812", rs9lcd,
"RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
RS9LCD_PACKET_SIZE, 0, 0, NULL,
sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
NULL
),
DMM(
"tecpel-dmm-8061-ser", fs9721,
"Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_00_temp_c
),
DMM(
"voltcraft-m3650cr", metex14,
"Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"voltcraft-m3650d", metex14,
"Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"voltcraft-m4650cr", metex14,
"Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"voltcraft-me42", metex14,
"Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
sr_metex14_packet_valid, sr_metex14_parse,
NULL
),
DMM(
"voltcraft-vc820-ser", fs9721,
"Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
NULL
),
DMM(
/*
* Note: The VC830 doesn't set the 'volt' and 'diode' bits of
* the FS9922 protocol. Instead, it only sets the user-defined
* bit "z1" to indicate "diode mode" and "voltage".
*/
"voltcraft-vc830-ser", fs9922,
"Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9922_PACKET_SIZE, 0, 0, NULL,
sr_fs9922_packet_valid, sr_fs9922_parse,
&sr_fs9922_z1_diode
),
DMM(
"voltcraft-vc840-ser", fs9721,
"Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_00_temp_c
),
DMM(
"voltcraft-vc870-ser", vc870,
"Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
9600, VC870_PACKET_SIZE, 0, 0, NULL,
sr_vc870_packet_valid, sr_vc870_parse, NULL
),
DMM(
"voltcraft-vc920-ser", ut71x,
"Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"voltcraft-vc940-ser", ut71x,
"Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"voltcraft-vc960-ser", ut71x,
"Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"uni-t-ut60a-ser", fs9721,
"UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
NULL
),
DMM(
"uni-t-ut60e-ser", fs9721,
"UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_00_temp_c
),
DMM(
/* Note: ES51986 baudrate is actually 19230! */
"uni-t-ut60g-ser", es519xx,
"UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
NULL
),
DMM(
"uni-t-ut61b-ser", fs9922,
"UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9922_PACKET_SIZE, 0, 0, NULL,
sr_fs9922_packet_valid, sr_fs9922_parse, NULL
),
DMM(
"uni-t-ut61c-ser", fs9922,
"UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9922_PACKET_SIZE, 0, 0, NULL,
sr_fs9922_packet_valid, sr_fs9922_parse, NULL
),
DMM(
"uni-t-ut61d-ser", fs9922,
"UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9922_PACKET_SIZE, 0, 0, NULL,
sr_fs9922_packet_valid, sr_fs9922_parse, NULL
),
DMM(
"uni-t-ut61e-ser", es519xx,
/* Note: ES51922 baudrate is actually 19230! */
"UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
NULL
),
DMM(
"uni-t-ut71a-ser", ut71x,
"UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"uni-t-ut71b-ser", ut71x,
"UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"uni-t-ut71c-ser", ut71x,
"UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"uni-t-ut71d-ser", ut71x,
"UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"uni-t-ut71e-ser", ut71x,
"UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
2400, UT71X_PACKET_SIZE, 0, 0, NULL,
sr_ut71x_packet_valid, sr_ut71x_parse, NULL
),
DMM(
"iso-tech-idm103n", es519xx,
"ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
NULL
),
DMM(
"tenma-72-7745-ser", fs9721,
"Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
2400, FS9721_PACKET_SIZE, 0, 0, NULL,
sr_fs9721_packet_valid, sr_fs9721_parse,
sr_fs9721_00_temp_c
),
DMM(
"tenma-72-7750-ser", es519xx,
/* Note: ES51986 baudrate is actually 19230! */
"Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
NULL
),
DMM(
"brymen-bm25x", bm25x,
"Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
NULL
),
NULL
};
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