2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
5 * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "libsigrok.h"
22 #include "libsigrok-internal.h"
27 #define LOG_PREFIX "scpi_serial"
29 #define SCPI_READ_RETRIES 100
30 #define SCPI_READ_RETRY_TIMEOUT 10000
33 struct sr_serial_dev_inst *serial;
37 static int scpi_serial_dev_inst_new(void *priv, const char *resource,
38 char **params, const char *serialcomm)
40 struct scpi_serial *sscpi = priv;
44 if (!(sscpi->serial = sr_serial_dev_inst_new(resource, serialcomm)))
50 static int scpi_serial_open(void *priv)
52 struct scpi_serial *sscpi = priv;
53 struct sr_serial_dev_inst *serial = sscpi->serial;
55 if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
58 if (serial_flush(serial) != SR_OK)
64 static int scpi_serial_source_add(void *priv, int events, int timeout,
65 sr_receive_data_callback_t cb, void *cb_data)
67 struct scpi_serial *sscpi = priv;
68 struct sr_serial_dev_inst *serial = sscpi->serial;
70 return serial_source_add(serial, events, timeout, cb, cb_data);
73 static int scpi_serial_source_remove(void *priv)
75 struct scpi_serial *sscpi = priv;
76 struct sr_serial_dev_inst *serial = sscpi->serial;
78 return serial_source_remove(serial);
81 static int scpi_serial_send(void *priv, const char *command)
83 int len, result, written;
84 gchar *terminated_command;
85 struct scpi_serial *sscpi = priv;
86 struct sr_serial_dev_inst *serial = sscpi->serial;
88 terminated_command = g_strconcat(command, "\n", NULL);
89 len = strlen(terminated_command);
91 while (written < len) {
92 result = serial_write(serial, terminated_command + written, len - written);
94 sr_err("Error while sending SCPI command: '%s'.", command);
95 g_free(terminated_command);
101 g_free(terminated_command);
103 sr_spew("Successfully sent SCPI command: '%s'.", command);
108 static int scpi_serial_read_begin(void *priv)
110 struct scpi_serial *sscpi = priv;
112 sscpi->last_character = '\0';
117 static int scpi_serial_read_data(void *priv, char *buf, int maxlen)
119 struct scpi_serial *sscpi = priv;
122 ret = serial_read(sscpi->serial, buf, maxlen);
128 sscpi->last_character = buf[ret - 1];
129 if (sscpi->last_character == '\n')
136 static int scpi_serial_read_complete(void *priv)
138 struct scpi_serial *sscpi = priv;
140 return (sscpi->last_character == '\n');
143 static int scpi_serial_close(void *priv)
145 struct scpi_serial *sscpi = priv;
147 return serial_close(sscpi->serial);
150 static void scpi_serial_free(void *priv)
152 struct scpi_serial *sscpi = priv;
154 sr_serial_dev_inst_free(sscpi->serial);
157 SR_PRIV const struct sr_scpi_dev_inst scpi_serial_dev = {
160 .priv_size = sizeof(struct scpi_serial),
161 .dev_inst_new = scpi_serial_dev_inst_new,
162 .open = scpi_serial_open,
163 .source_add = scpi_serial_source_add,
164 .source_remove = scpi_serial_source_remove,
165 .send = scpi_serial_send,
166 .read_begin = scpi_serial_read_begin,
167 .read_data = scpi_serial_read_data,
168 .read_complete = scpi_serial_read_complete,
169 .close = scpi_serial_close,
170 .free = scpi_serial_free,