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 dev_clear(const struct sr_dev_driver *di)
41 return std_dev_clear(di, NULL);
44 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
46 return std_init(sr_ctx, di, LOG_PREFIX);
49 static GSList *scan(struct sr_dev_driver *di, GSList *options)
51 struct scale_info *scale;
52 struct sr_config *src;
54 const char *conn, *serialcomm;
55 struct sr_dev_inst *sdi;
56 struct drv_context *drvc;
57 struct dev_context *devc;
58 struct sr_serial_dev_inst *serial;
63 scale = (struct scale_info *)di;
65 conn = serialcomm = NULL;
66 for (l = options; l; l = l->next) {
70 conn = g_variant_get_string(src->data, NULL);
72 case SR_CONF_SERIALCOMM:
73 serialcomm = g_variant_get_string(src->data, NULL);
81 serialcomm = scale->conn;
83 serial = sr_serial_dev_inst_new(conn, serialcomm);
85 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
88 sr_info("Probing serial port %s.", conn);
94 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
95 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
97 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
99 /* Let's get a bit of data and see if we can find a packet. */
101 ret = serial_stream_detect(serial, buf, &len, scale->packet_size,
102 scale->packet_valid, 3000, scale->baudrate);
106 sr_info("Found device on port %s.", conn);
108 sdi = g_malloc0(sizeof(struct sr_dev_inst));
109 sdi->status = SR_ST_INACTIVE;
110 sdi->vendor = g_strdup(scale->vendor);
111 sdi->model = g_strdup(scale->device);
112 devc = g_malloc0(sizeof(struct dev_context));
113 sdi->inst_type = SR_INST_SERIAL;
117 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass");
118 drvc->instances = g_slist_append(drvc->instances, sdi);
119 devices = g_slist_append(devices, sdi);
122 serial_close(serial);
127 static GSList *dev_list(const struct sr_dev_driver *di)
129 return ((struct drv_context *)(di->context))->instances;
132 static int cleanup(const struct sr_dev_driver *di)
134 return dev_clear(di);
137 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
138 const struct sr_channel_group *cg)
140 struct dev_context *devc;
144 if (sdi->status != SR_ST_ACTIVE)
145 return SR_ERR_DEV_CLOSED;
147 if (!(devc = sdi->priv))
151 case SR_CONF_LIMIT_SAMPLES:
152 devc->limit_samples = g_variant_get_uint64(data);
154 case SR_CONF_LIMIT_MSEC:
155 devc->limit_msec = g_variant_get_uint64(data);
164 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
165 const struct sr_channel_group *cg)
171 case SR_CONF_SCAN_OPTIONS:
172 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
173 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
175 case SR_CONF_DEVICE_OPTIONS:
176 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
177 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
186 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
188 struct dev_context *devc;
189 struct sr_serial_dev_inst *serial;
191 if (sdi->status != SR_ST_ACTIVE)
192 return SR_ERR_DEV_CLOSED;
194 if (!(devc = sdi->priv))
197 devc->cb_data = cb_data;
201 sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
202 if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
204 /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
206 devc->num_samples = 0;
207 devc->starttime = g_get_monotonic_time();
209 /* Send header packet to the session bus. */
210 std_session_send_df_header(cb_data, LOG_PREFIX);
212 /* Poll every 50ms, or whenever some data comes in. */
213 serial_source_add(sdi->session, serial, G_IO_IN, 50,
214 kern_scale_receive_data, (void *)sdi);
219 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
221 return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
222 sdi->conn, LOG_PREFIX);
225 #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
227 &(struct scale_info) { \
230 .longname = VENDOR " " MODEL, \
233 .cleanup = cleanup, \
235 .dev_list = dev_list, \
236 .dev_clear = dev_clear, \
237 .config_get = NULL, \
238 .config_set = config_set, \
239 .config_list = config_list, \
240 .dev_open = std_serial_dev_open, \
241 .dev_close = std_serial_dev_close, \
242 .dev_acquisition_start = dev_acquisition_start, \
243 .dev_acquisition_stop = dev_acquisition_stop, \
246 VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
247 VALID, PARSE, sizeof(struct CHIPSET##_info) \
251 * Some scales have (user-configurable) 14-byte or 15-byte packets.
252 * We transparently support both variants by specifying the larger value
253 * below and due to the way the stream parser works.
255 * The scales have a standard baudrate (model dependent) as listed below,
256 * but serial parameters are user-configurable. We support that by letting
257 * the user override them via "serialcomm".
260 SR_PRIV const struct scale_info *kern_scale_drivers[] = {
262 "kern-ew-6200-2nm", kern,
263 "KERN", "EW 6200-2NM", "1200/8n2", 1200,
264 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse