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 int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
41 return std_init(sr_ctx, di, LOG_PREFIX);
44 static GSList *scan(struct sr_dev_driver *di, GSList *options)
46 struct scale_info *scale;
47 struct sr_config *src;
49 const char *conn, *serialcomm;
50 struct sr_dev_inst *sdi;
51 struct drv_context *drvc;
52 struct dev_context *devc;
53 struct sr_serial_dev_inst *serial;
58 scale = (struct scale_info *)di;
60 conn = serialcomm = NULL;
61 for (l = options; l; l = l->next) {
65 conn = g_variant_get_string(src->data, NULL);
67 case SR_CONF_SERIALCOMM:
68 serialcomm = g_variant_get_string(src->data, NULL);
76 serialcomm = scale->conn;
78 serial = sr_serial_dev_inst_new(conn, serialcomm);
80 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
83 sr_info("Probing serial port %s.", conn);
89 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
90 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
92 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
94 /* Let's get a bit of data and see if we can find a packet. */
96 ret = serial_stream_detect(serial, buf, &len, scale->packet_size,
97 scale->packet_valid, 3000, scale->baudrate);
101 sr_info("Found device on port %s.", conn);
103 sdi = g_malloc0(sizeof(struct sr_dev_inst));
104 sdi->status = SR_ST_INACTIVE;
105 sdi->vendor = g_strdup(scale->vendor);
106 sdi->model = g_strdup(scale->device);
107 devc = g_malloc0(sizeof(struct dev_context));
108 sdi->inst_type = SR_INST_SERIAL;
112 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass");
113 drvc->instances = g_slist_append(drvc->instances, sdi);
114 devices = g_slist_append(devices, sdi);
117 serial_close(serial);
122 static GSList *dev_list(const struct sr_dev_driver *di)
124 return ((struct drv_context *)(di->context))->instances;
127 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
128 const struct sr_channel_group *cg)
130 struct dev_context *devc;
134 if (sdi->status != SR_ST_ACTIVE)
135 return SR_ERR_DEV_CLOSED;
137 if (!(devc = sdi->priv))
141 case SR_CONF_LIMIT_SAMPLES:
142 devc->limit_samples = g_variant_get_uint64(data);
144 case SR_CONF_LIMIT_MSEC:
145 devc->limit_msec = g_variant_get_uint64(data);
154 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
155 const struct sr_channel_group *cg)
161 case SR_CONF_SCAN_OPTIONS:
162 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
163 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
165 case SR_CONF_DEVICE_OPTIONS:
166 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
167 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
176 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
178 struct dev_context *devc;
179 struct sr_serial_dev_inst *serial;
181 if (sdi->status != SR_ST_ACTIVE)
182 return SR_ERR_DEV_CLOSED;
187 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
188 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
190 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
192 devc->num_samples = 0;
193 devc->starttime = g_get_monotonic_time();
195 std_session_send_df_header(sdi, LOG_PREFIX);
197 /* Poll every 50ms, or whenever some data comes in. */
198 serial_source_add(sdi->session, serial, G_IO_IN, 50,
199 kern_scale_receive_data, (void *)sdi);
204 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
206 return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
207 sdi->conn, LOG_PREFIX);
210 #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
212 &(struct scale_info) { \
215 .longname = VENDOR " " MODEL, \
218 .cleanup = std_cleanup, \
220 .dev_list = dev_list, \
221 .config_get = NULL, \
222 .config_set = config_set, \
223 .config_list = config_list, \
224 .dev_open = std_serial_dev_open, \
225 .dev_close = std_serial_dev_close, \
226 .dev_acquisition_start = dev_acquisition_start, \
227 .dev_acquisition_stop = dev_acquisition_stop, \
230 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
231 VALID, PARSE, sizeof(struct CHIPSET##_info) \
235 * Some scales have (user-configurable) 14-byte or 15-byte packets.
236 * We transparently support both variants by specifying the larger value
237 * below and due to the way the stream parser works.
239 * The scales have a standard baudrate (model dependent) as listed below,
240 * but serial parameters are user-configurable. We support that by letting
241 * the user override them via "serialcomm".
244 SR_PRIV const struct scale_info *kern_scale_drivers[] = {
246 "kern-ew-6200-2nm", kern,
247 "KERN", "EW 6200-2NM", "1200/8n2", 1200,
248 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse