2 * This file is part of the libsigrok project.
4 * Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <libsigrok/libsigrok.h>
24 #include "libsigrok-internal.h"
27 static const uint32_t scanopts[] = {
32 static const uint32_t devopts[] = {
35 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
36 SR_CONF_LIMIT_MSEC | SR_CONF_SET,
39 static GSList *scan(struct sr_dev_driver *di, GSList *options)
41 struct scale_info *scale;
42 struct sr_config *src;
44 const char *conn, *serialcomm;
45 struct sr_dev_inst *sdi;
46 struct dev_context *devc;
47 struct sr_serial_dev_inst *serial;
52 scale = (struct scale_info *)di;
54 conn = serialcomm = NULL;
55 for (l = options; l; l = l->next) {
59 conn = g_variant_get_string(src->data, NULL);
61 case SR_CONF_SERIALCOMM:
62 serialcomm = g_variant_get_string(src->data, NULL);
70 serialcomm = scale->conn;
72 serial = sr_serial_dev_inst_new(conn, serialcomm);
74 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
77 sr_info("Probing serial port %s.", conn);
82 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
83 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
85 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
87 /* Let's get a bit of data and see if we can find a packet. */
89 ret = serial_stream_detect(serial, buf, &len, scale->packet_size,
90 scale->packet_valid, 3000, scale->baudrate);
94 sr_info("Found device on port %s.", conn);
96 sdi = g_malloc0(sizeof(struct sr_dev_inst));
97 sdi->status = SR_ST_INACTIVE;
98 sdi->vendor = g_strdup(scale->vendor);
99 sdi->model = g_strdup(scale->device);
100 devc = g_malloc0(sizeof(struct dev_context));
101 sr_sw_limits_init(&devc->limits);
102 sdi->inst_type = SR_INST_SERIAL;
105 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass");
106 devices = g_slist_append(devices, sdi);
109 serial_close(serial);
111 return std_scan_complete(di, devices);
114 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
115 const struct sr_channel_group *cg)
117 struct dev_context *devc;
121 if (sdi->status != SR_ST_ACTIVE)
122 return SR_ERR_DEV_CLOSED;
126 return sr_sw_limits_config_set(&devc->limits, key, data);
129 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
130 const struct sr_channel_group *cg)
136 case SR_CONF_SCAN_OPTIONS:
137 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
138 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
140 case SR_CONF_DEVICE_OPTIONS:
141 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
142 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
151 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
153 struct dev_context *devc;
154 struct sr_serial_dev_inst *serial;
156 if (sdi->status != SR_ST_ACTIVE)
157 return SR_ERR_DEV_CLOSED;
162 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
163 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
165 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
167 sr_sw_limits_acquisition_start(&devc->limits);
168 std_session_send_df_header(sdi);
170 /* Poll every 50ms, or whenever some data comes in. */
171 serial_source_add(sdi->session, serial, G_IO_IN, 50,
172 kern_scale_receive_data, (void *)sdi);
177 #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
179 &((struct scale_info) { \
182 .longname = VENDOR " " MODEL, \
185 .cleanup = std_cleanup, \
187 .dev_list = std_dev_list, \
188 .config_get = NULL, \
189 .config_set = config_set, \
190 .config_list = config_list, \
191 .dev_open = std_serial_dev_open, \
192 .dev_close = std_serial_dev_close, \
193 .dev_acquisition_start = dev_acquisition_start, \
194 .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
197 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
198 VALID, PARSE, sizeof(struct CHIPSET##_info) \
202 * Some scales have (user-configurable) 14-byte or 15-byte packets.
203 * We transparently support both variants by specifying the larger value
204 * below and due to the way the stream parser works.
206 * The scales have a standard baudrate (model dependent) as listed below,
207 * but serial parameters are user-configurable. We support that by letting
208 * the user override them via "serialcomm".
211 SR_REGISTER_DEV_DRIVER_LIST(kern_scale_drivers,
213 "kern-ew-6200-2nm", kern,
214 "KERN", "EW 6200-2NM", "1200/8n2", 1200,
215 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse