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, see <http://www.gnu.org/licenses/>.
22 #include <libsigrok/libsigrok.h>
23 #include "libsigrok-internal.h"
26 static const uint32_t scanopts[] = {
31 static const uint32_t devopts[] = {
34 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
35 SR_CONF_LIMIT_MSEC | SR_CONF_SET,
38 static GSList *scan(struct sr_dev_driver *di, GSList *options)
40 struct scale_info *scale;
41 struct sr_config *src;
43 const char *conn, *serialcomm;
44 struct sr_dev_inst *sdi;
45 struct dev_context *devc;
46 struct sr_serial_dev_inst *serial;
51 scale = (struct scale_info *)di;
53 conn = serialcomm = NULL;
54 for (l = options; l; l = l->next) {
58 conn = g_variant_get_string(src->data, NULL);
60 case SR_CONF_SERIALCOMM:
61 serialcomm = g_variant_get_string(src->data, NULL);
69 serialcomm = scale->conn;
71 serial = sr_serial_dev_inst_new(conn, serialcomm);
73 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
76 sr_info("Probing serial port %s.", conn);
81 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
82 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
84 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
86 /* Let's get a bit of data and see if we can find a packet. */
88 ret = serial_stream_detect(serial, buf, &len, scale->packet_size,
89 scale->packet_valid, 3000, scale->baudrate);
93 sr_info("Found device on port %s.", conn);
95 sdi = g_malloc0(sizeof(struct sr_dev_inst));
96 sdi->status = SR_ST_INACTIVE;
97 sdi->vendor = g_strdup(scale->vendor);
98 sdi->model = g_strdup(scale->device);
99 devc = g_malloc0(sizeof(struct dev_context));
100 sr_sw_limits_init(&devc->limits);
101 sdi->inst_type = SR_INST_SERIAL;
104 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass");
105 devices = g_slist_append(devices, sdi);
108 serial_close(serial);
110 return std_scan_complete(di, devices);
113 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
114 const struct sr_channel_group *cg)
116 struct dev_context *devc;
122 return sr_sw_limits_config_set(&devc->limits, key, data);
125 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
126 const struct sr_channel_group *cg)
132 case SR_CONF_SCAN_OPTIONS:
133 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
134 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
136 case SR_CONF_DEVICE_OPTIONS:
137 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
138 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
147 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
149 struct dev_context *devc;
150 struct sr_serial_dev_inst *serial;
155 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
156 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
158 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
160 sr_sw_limits_acquisition_start(&devc->limits);
161 std_session_send_df_header(sdi);
163 /* Poll every 50ms, or whenever some data comes in. */
164 serial_source_add(sdi->session, serial, G_IO_IN, 50,
165 kern_scale_receive_data, (void *)sdi);
170 #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
172 &((struct scale_info) { \
175 .longname = VENDOR " " MODEL, \
178 .cleanup = std_cleanup, \
180 .dev_list = std_dev_list, \
181 .dev_clear = std_dev_clear, \
182 .config_get = NULL, \
183 .config_set = config_set, \
184 .config_list = config_list, \
185 .dev_open = std_serial_dev_open, \
186 .dev_close = std_serial_dev_close, \
187 .dev_acquisition_start = dev_acquisition_start, \
188 .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
191 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
192 VALID, PARSE, sizeof(struct CHIPSET##_info) \
196 * Some scales have (user-configurable) 14-byte or 15-byte packets.
197 * We transparently support both variants by specifying the larger value
198 * below and due to the way the stream parser works.
200 * The scales have a standard baudrate (model dependent) as listed below,
201 * but serial parameters are user-configurable. We support that by letting
202 * the user override them via "serialcomm".
205 SR_REGISTER_DEV_DRIVER_LIST(kern_scale_drivers,
207 "kern-ew-6200-2nm", kern,
208 "KERN", "EW 6200-2NM", "1200/8n2", 1200,
209 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse