2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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 3 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/>.
23 static const uint32_t scanopts[] = {
28 static const uint32_t drvopts[] = {
32 static const uint32_t devopts[] = {
34 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
35 SR_CONF_LIMIT_MSEC | SR_CONF_SET,
38 static GSList *brymen_scan(struct sr_dev_driver *di, const char *conn,
39 const char *serialcomm)
41 struct sr_dev_inst *sdi;
42 struct dev_context *devc;
43 struct sr_serial_dev_inst *serial;
44 int rts_toggle_delay_us;
50 serial = sr_serial_dev_inst_new(conn, serialcomm);
52 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
55 * The device requires an RTS *pulse* before communication.
56 * The vendor's documentation recommends the following sequence:
57 * Open the COM port, wait for 100ms, set RTS=1, wait for 100ms,
58 * set RTS=0, wait for 100ms, set RTS=1, configure bitrate and
59 * frame format, transmit request data, receive response data.
61 rts_toggle_delay_us = 100 * 1000; /* 100ms */
62 g_usleep(rts_toggle_delay_us);
63 serial_set_handshake(serial, 1, -1);
64 g_usleep(rts_toggle_delay_us);
65 serial_set_handshake(serial, 0, -1);
66 g_usleep(rts_toggle_delay_us);
67 serial_set_handshake(serial, 1, -1);
68 g_usleep(rts_toggle_delay_us);
70 sr_info("Probing port %s.", conn);
75 if ((ret = brymen_packet_request(serial)) < 0) {
76 sr_err("Unable to send command: %d.", ret);
81 ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length,
82 brymen_packet_is_valid, 1000, 9600);
86 sr_info("Found device on port %s.", conn);
88 sdi = g_malloc0(sizeof(struct sr_dev_inst));
89 sdi->status = SR_ST_INACTIVE;
90 sdi->vendor = g_strdup("Brymen");
91 sdi->model = g_strdup("BM85x");
92 devc = g_malloc0(sizeof(struct dev_context));
93 sr_sw_limits_init(&devc->sw_limits);
94 sdi->inst_type = SR_INST_SERIAL;
97 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
98 devices = g_slist_append(devices, sdi);
101 serial_close(serial);
103 return std_scan_complete(di, devices);
106 static GSList *scan(struct sr_dev_driver *di, GSList *options)
108 struct sr_config *src;
110 const char *conn, *serialcomm;
115 * BEWARE! Default 'conn' is not desirable when the device cannot
116 * reliably get detected. Insist that users specify the port.
119 serialcomm = "9600/8n1/dtr=1/rts=1";
120 for (l = options; l; l = l->next) {
124 conn = g_variant_get_string(src->data, NULL);
126 case SR_CONF_SERIALCOMM:
127 serialcomm = g_variant_get_string(src->data, NULL);
134 devices = brymen_scan(di, conn, serialcomm);
139 static int config_set(uint32_t key, GVariant *data,
140 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
142 struct dev_context *devc;
148 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
151 static int config_list(uint32_t key, GVariant **data,
152 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
154 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
157 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
159 struct dev_context *devc;
160 struct sr_serial_dev_inst *serial;
164 sr_sw_limits_acquisition_start(&devc->sw_limits);
165 std_session_send_df_header(sdi);
168 serial_source_add(sdi->session, serial, G_IO_IN, 50,
169 brymen_dmm_receive_data, (void *)sdi);
174 static struct sr_dev_driver brymen_bm857_driver_info = {
175 .name = "brymen-bm857",
176 .longname = "Brymen BM857",
179 .cleanup = std_cleanup,
181 .dev_list = std_dev_list,
182 .dev_clear = std_dev_clear,
184 .config_set = config_set,
185 .config_list = config_list,
186 .dev_open = std_serial_dev_open,
187 .dev_close = std_serial_dev_close,
188 .dev_acquisition_start = dev_acquisition_start,
189 .dev_acquisition_stop = std_serial_dev_acquisition_stop,
192 SR_REGISTER_DEV_DRIVER(brymen_bm857_driver_info);