2 * This file is part of the libsigrok project.
4 * Copyright (C) 2015 Hannu Vuolasaho <vuokkosetae@gmail.com>
5 * Copyright (C) 2018 Frank Stettner <frank-stettner@gmx.net>
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/>.
24 #define REQ_TIMEOUT_MS 500
25 #define DEVICE_PROCESSING_TIME_MS 80
27 SR_PRIV int korad_kaxxxxp_send_cmd(struct sr_serial_dev_inst *serial,
32 sr_dbg("Sending '%s'.", cmd);
33 if ((ret = serial_write_blocking(serial, cmd, strlen(cmd), 0)) < 0) {
34 sr_err("Error sending command: %d.", ret);
41 SR_PRIV int korad_kaxxxxp_read_chars(struct sr_serial_dev_inst *serial,
44 int ret, received, turns;
50 if ((ret = serial_read_blocking(serial, buf + received,
52 serial_timeout(serial, count))) < 0) {
53 sr_err("Error %d reading %d bytes from device.",
59 } while ((received < count) && (turns < 100));
63 sr_spew("Received: '%s'.", buf);
68 static void give_device_time_to_process(struct dev_context *devc)
70 int64_t sleeping_time;
72 sleeping_time = devc->req_sent_at + (DEVICE_PROCESSING_TIME_MS * 1000);
73 sleeping_time -= g_get_monotonic_time();
75 if (sleeping_time > 0) {
76 g_usleep(sleeping_time);
77 sr_spew("Sleeping for processing %" PRIi64 " usec", sleeping_time);
81 SR_PRIV int korad_kaxxxxp_set_value(struct sr_serial_dev_inst *serial,
82 int target, struct dev_context *devc)
89 g_mutex_lock(&devc->rw_mutex);
90 give_device_time_to_process(devc);
97 sr_err("Can't set measurable parameter %d.", target);
98 g_mutex_unlock(&devc->rw_mutex);
100 case KAXXXXP_CURRENT_MAX:
101 cmd = "ISET1:%05.3f";
102 value = devc->current_max;
104 case KAXXXXP_VOLTAGE_MAX:
105 cmd = "VSET1:%05.2f";
106 value = devc->voltage_max;
110 value = (devc->output_enabled) ? 1 : 0;
114 value = (devc->beep_enabled) ? 1 : 0;
118 value = (devc->ocp_enabled) ? 1 : 0;
122 value = (devc->ovp_enabled) ? 1 : 0;
126 if (devc->program < 1 || devc->program > 5) {
127 sr_err("Only programs 1-5 supported and %d isn't "
128 "between them.", devc->program);
129 g_mutex_unlock(&devc->rw_mutex);
132 value = devc->program;
136 if (devc->program < 1 || devc->program > 5) {
137 sr_err("Only programs 1-5 supported and %d isn't "
138 "between them.", devc->program);
139 g_mutex_unlock(&devc->rw_mutex);
142 value = devc->program;
145 sr_err("Don't know how to set %d.", target);
146 g_mutex_unlock(&devc->rw_mutex);
151 snprintf(msg, 20, cmd, value);
153 ret = korad_kaxxxxp_send_cmd(serial, msg);
154 devc->req_sent_at = g_get_monotonic_time();
156 g_mutex_unlock(&devc->rw_mutex);
161 SR_PRIV int korad_kaxxxxp_get_value(struct sr_serial_dev_inst *serial,
162 int target, struct dev_context *devc)
169 g_mutex_lock(&devc->rw_mutex);
170 give_device_time_to_process(devc);
176 case KAXXXXP_CURRENT:
177 /* Read current from device. */
178 ret = korad_kaxxxxp_send_cmd(serial, "IOUT1?");
179 value = &(devc->current);
181 case KAXXXXP_CURRENT_MAX:
182 /* Read set current from device. */
183 ret = korad_kaxxxxp_send_cmd(serial, "ISET1?");
184 value = &(devc->current_max);
186 case KAXXXXP_VOLTAGE:
187 /* Read voltage from device. */
188 ret = korad_kaxxxxp_send_cmd(serial, "VOUT1?");
189 value = &(devc->voltage);
191 case KAXXXXP_VOLTAGE_MAX:
192 /* Read set voltage from device. */
193 ret = korad_kaxxxxp_send_cmd(serial, "VSET1?");
194 value = &(devc->voltage_max);
200 /* Read status from device. */
201 ret = korad_kaxxxxp_send_cmd(serial, "STATUS?");
205 sr_err("Don't know how to query %d.", target);
206 g_mutex_unlock(&devc->rw_mutex);
210 devc->req_sent_at = g_get_monotonic_time();
212 if ((ret = korad_kaxxxxp_read_chars(serial, count, reply)) < 0) {
213 g_mutex_unlock(&devc->rw_mutex);
220 sr_atof_ascii((const char *)&reply, value);
221 sr_dbg("value: %f", *value);
223 /* We have status reply. */
224 status_byte = reply[0];
225 /* Constant current */
226 devc->cc_mode[0] = !(status_byte & (1 << 0)); /* Channel one */
227 devc->cc_mode[1] = !(status_byte & (1 << 1)); /* Channel two */
230 * status_byte & ((1 << 2) | (1 << 3))
231 * 00 independent 01 series 11 parallel
233 devc->beep_enabled = (1 << 4);
234 devc->ocp_enabled = (status_byte & (1 << 5));
235 devc->output_enabled = (status_byte & (1 << 6));
236 /* Velleman LABPS3005 quirk */
237 if (devc->output_enabled)
238 devc->ovp_enabled = (status_byte & (1 << 7));
239 sr_dbg("Status: 0x%02x", status_byte);
240 sr_spew("Status: CH1: constant %s CH2: constant %s. "
241 "Tracking would be %s. Device is "
242 "%s and %s. Buttons are %s. Output is %s "
243 "and extra byte is %s.",
244 (status_byte & (1 << 0)) ? "voltage" : "current",
245 (status_byte & (1 << 1)) ? "voltage" : "current",
246 (status_byte & (1 << 2)) ? "parallel" : "series",
247 (status_byte & (1 << 3)) ? "tracking" : "independent",
248 (status_byte & (1 << 4)) ? "beeping" : "silent",
249 (status_byte & (1 << 5)) ? "locked" : "unlocked",
250 (status_byte & (1 << 6)) ? "enabled" : "disabled",
251 (status_byte & (1 << 7)) ? "true" : "false");
254 /* Read the sixth byte from ISET? BUG workaround. */
255 if (target == KAXXXXP_CURRENT_MAX)
256 serial_read_blocking(serial, &status_byte, 1, 10);
258 g_mutex_unlock(&devc->rw_mutex);
263 SR_PRIV int korad_kaxxxxp_get_all_values(struct sr_serial_dev_inst *serial,
264 struct dev_context *devc)
268 for (target = KAXXXXP_CURRENT;
269 target <= KAXXXXP_STATUS; target++) {
270 if ((ret = korad_kaxxxxp_get_value(serial, target, devc)) < 0)
277 static void next_measurement(struct dev_context *devc)
279 switch (devc->acquisition_target) {
280 case KAXXXXP_CURRENT:
281 devc->acquisition_target = KAXXXXP_VOLTAGE;
283 case KAXXXXP_VOLTAGE:
284 devc->acquisition_target = KAXXXXP_STATUS;
287 devc->acquisition_target = KAXXXXP_CURRENT;
290 devc->acquisition_target = KAXXXXP_CURRENT;
291 sr_err("Invalid target for next acquisition.");
295 SR_PRIV int korad_kaxxxxp_receive_data(int fd, int revents, void *cb_data)
297 struct sr_dev_inst *sdi;
298 struct dev_context *devc;
299 struct sr_serial_dev_inst *serial;
300 struct sr_datafeed_packet packet;
301 struct sr_datafeed_analog analog;
302 struct sr_analog_encoding encoding;
303 struct sr_analog_meaning meaning;
304 struct sr_analog_spec spec;
309 if (!(sdi = cb_data))
312 if (!(devc = sdi->priv))
317 if (revents == G_IO_IN) {
319 korad_kaxxxxp_get_value(serial, devc->acquisition_target, devc);
321 /* Note: digits/spec_digits will be overridden later. */
322 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
324 /* Send the value forward. */
325 packet.type = SR_DF_ANALOG;
326 packet.payload = &analog;
327 analog.num_samples = 1;
328 l = g_slist_copy(sdi->channels);
329 if (devc->acquisition_target == KAXXXXP_CURRENT) {
330 l = g_slist_remove_link(l, g_slist_nth(l, 0));
331 analog.meaning->channels = l;
332 analog.meaning->mq = SR_MQ_CURRENT;
333 analog.meaning->unit = SR_UNIT_AMPERE;
334 analog.meaning->mqflags = 0;
335 analog.encoding->digits = 3;
336 analog.spec->spec_digits = 3;
337 analog.data = &devc->current;
338 sr_session_send(sdi, &packet);
340 else if (devc->acquisition_target == KAXXXXP_VOLTAGE) {
341 l = g_slist_remove_link(l, g_slist_nth(l, 1));
342 analog.meaning->channels = l;
343 analog.meaning->mq = SR_MQ_VOLTAGE;
344 analog.meaning->unit = SR_UNIT_VOLT;
345 analog.meaning->mqflags = SR_MQFLAG_DC;
346 analog.encoding->digits = 2;
347 analog.spec->spec_digits = 2;
348 analog.data = &devc->voltage;
349 sr_session_send(sdi, &packet);
350 sr_sw_limits_update_samples_read(&devc->limits, 1);
352 next_measurement(devc);
355 if (sr_sw_limits_check(&devc->limits))
356 sr_dev_acquisition_stop(sdi);