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);
96 sr_err("Can't set measurable parameter %d.", target);
97 g_mutex_unlock(&devc->rw_mutex);
99 case KAXXXXP_CURRENT_LIMIT:
100 cmd = "ISET1:%05.3f";
101 value = devc->set_current_limit;
103 case KAXXXXP_VOLTAGE_TARGET:
104 cmd = "VSET1:%05.2f";
105 value = devc->set_voltage_target;
109 value = (devc->set_output_enabled) ? 1 : 0;
110 /* Set value back to recognize changes */
111 devc->output_enabled = devc->set_output_enabled;
115 value = (devc->set_beep_enabled) ? 1 : 0;
119 value = (devc->set_ocp_enabled) ? 1 : 0;
120 /* Set value back to recognize changes */
121 devc->ocp_enabled = devc->set_ocp_enabled;
125 value = (devc->set_ovp_enabled) ? 1 : 0;
126 /* Set value back to recognize changes */
127 devc->ovp_enabled = devc->set_ovp_enabled;
131 if (devc->program < 1 || devc->program > 5) {
132 sr_err("Only programs 1-5 supported and %d isn't "
133 "between them.", devc->program);
134 g_mutex_unlock(&devc->rw_mutex);
137 value = devc->program;
141 if (devc->program < 1 || devc->program > 5) {
142 sr_err("Only programs 1-5 supported and %d isn't "
143 "between them.", devc->program);
144 g_mutex_unlock(&devc->rw_mutex);
147 value = devc->program;
150 sr_err("Don't know how to set %d.", target);
151 g_mutex_unlock(&devc->rw_mutex);
155 msg = g_malloc0(20 + 1);
157 sr_snprintf_ascii(msg, 20, cmd, value);
159 ret = korad_kaxxxxp_send_cmd(serial, msg);
160 devc->req_sent_at = g_get_monotonic_time();
163 g_mutex_unlock(&devc->rw_mutex);
168 SR_PRIV int korad_kaxxxxp_get_value(struct sr_serial_dev_inst *serial,
169 int target, struct dev_context *devc)
176 g_mutex_lock(&devc->rw_mutex);
177 give_device_time_to_process(devc);
183 case KAXXXXP_CURRENT:
184 /* Read current from device. */
185 ret = korad_kaxxxxp_send_cmd(serial, "IOUT1?");
186 value = &(devc->current);
188 case KAXXXXP_CURRENT_LIMIT:
189 /* Read set current from device. */
190 ret = korad_kaxxxxp_send_cmd(serial, "ISET1?");
191 value = &(devc->current_limit);
193 case KAXXXXP_VOLTAGE:
194 /* Read voltage from device. */
195 ret = korad_kaxxxxp_send_cmd(serial, "VOUT1?");
196 value = &(devc->voltage);
198 case KAXXXXP_VOLTAGE_TARGET:
199 /* Read set voltage from device. */
200 ret = korad_kaxxxxp_send_cmd(serial, "VSET1?");
201 value = &(devc->voltage_target);
207 /* Read status from device. */
208 ret = korad_kaxxxxp_send_cmd(serial, "STATUS?");
212 sr_err("Don't know how to query %d.", target);
213 g_mutex_unlock(&devc->rw_mutex);
217 devc->req_sent_at = g_get_monotonic_time();
219 if ((ret = korad_kaxxxxp_read_chars(serial, count, reply)) < 0) {
220 g_mutex_unlock(&devc->rw_mutex);
227 sr_atof_ascii((const char *)&reply, value);
228 sr_dbg("value: %f", *value);
230 /* We have status reply. */
231 status_byte = reply[0];
232 /* Constant current */
233 devc->cc_mode[0] = !(status_byte & (1 << 0)); /* Channel one */
234 devc->cc_mode[1] = !(status_byte & (1 << 1)); /* Channel two */
237 * status_byte & ((1 << 2) | (1 << 3))
238 * 00 independent 01 series 11 parallel
240 devc->beep_enabled = (1 << 4);
241 devc->ocp_enabled = (status_byte & (1 << 5));
242 devc->output_enabled = (status_byte & (1 << 6));
243 /* Velleman LABPS3005 quirk */
244 if (devc->output_enabled)
245 devc->ovp_enabled = (status_byte & (1 << 7));
246 sr_dbg("Status: 0x%02x", status_byte);
247 sr_spew("Status: CH1: constant %s CH2: constant %s. "
248 "Tracking would be %s. Device is "
249 "%s and %s. Buttons are %s. Output is %s "
250 "and extra bit is %s.",
251 (status_byte & (1 << 0)) ? "voltage" : "current",
252 (status_byte & (1 << 1)) ? "voltage" : "current",
253 (status_byte & (1 << 2)) ? "parallel" : "series",
254 (status_byte & (1 << 3)) ? "tracking" : "independent",
255 (status_byte & (1 << 4)) ? "beeping" : "silent",
256 (status_byte & (1 << 5)) ? "locked" : "unlocked",
257 (status_byte & (1 << 6)) ? "enabled" : "disabled",
258 (status_byte & (1 << 7)) ? "true" : "false");
261 /* Read the sixth byte from ISET? BUG workaround. */
262 if (target == KAXXXXP_CURRENT_LIMIT)
263 serial_read_blocking(serial, &status_byte, 1, 10);
265 g_mutex_unlock(&devc->rw_mutex);
270 SR_PRIV int korad_kaxxxxp_get_all_values(struct sr_serial_dev_inst *serial,
271 struct dev_context *devc)
275 for (target = KAXXXXP_CURRENT;
276 target <= KAXXXXP_STATUS; target++) {
277 if ((ret = korad_kaxxxxp_get_value(serial, target, devc)) < 0)
284 static void next_measurement(struct dev_context *devc)
286 switch (devc->acquisition_target) {
287 case KAXXXXP_CURRENT:
288 devc->acquisition_target = KAXXXXP_VOLTAGE;
290 case KAXXXXP_VOLTAGE:
291 devc->acquisition_target = KAXXXXP_STATUS;
294 devc->acquisition_target = KAXXXXP_CURRENT;
297 devc->acquisition_target = KAXXXXP_CURRENT;
298 sr_err("Invalid target for next acquisition.");
302 SR_PRIV int korad_kaxxxxp_receive_data(int fd, int revents, void *cb_data)
304 struct sr_dev_inst *sdi;
305 struct dev_context *devc;
306 struct sr_serial_dev_inst *serial;
307 struct sr_datafeed_packet packet;
308 struct sr_datafeed_analog analog;
309 struct sr_analog_encoding encoding;
310 struct sr_analog_meaning meaning;
311 struct sr_analog_spec spec;
317 if (!(sdi = cb_data))
320 if (!(devc = sdi->priv))
326 korad_kaxxxxp_get_value(serial, devc->acquisition_target, devc);
328 /* Note: digits/spec_digits will be overridden later. */
329 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
331 /* Send the value forward. */
332 packet.type = SR_DF_ANALOG;
333 packet.payload = &analog;
334 analog.num_samples = 1;
335 l = g_slist_copy(sdi->channels);
336 if (devc->acquisition_target == KAXXXXP_CURRENT) {
337 l = g_slist_remove_link(l, g_slist_nth(l, 0));
338 analog.meaning->channels = l;
339 analog.meaning->mq = SR_MQ_CURRENT;
340 analog.meaning->unit = SR_UNIT_AMPERE;
341 analog.meaning->mqflags = SR_MQFLAG_DC;
342 analog.encoding->digits = 3;
343 analog.spec->spec_digits = 3;
344 analog.data = &devc->current;
345 sr_session_send(sdi, &packet);
346 } else if (devc->acquisition_target == KAXXXXP_VOLTAGE) {
347 l = g_slist_remove_link(l, g_slist_nth(l, 1));
348 analog.meaning->channels = l;
349 analog.meaning->mq = SR_MQ_VOLTAGE;
350 analog.meaning->unit = SR_UNIT_VOLT;
351 analog.meaning->mqflags = SR_MQFLAG_DC;
352 analog.encoding->digits = 2;
353 analog.spec->spec_digits = 2;
354 analog.data = &devc->voltage;
355 sr_session_send(sdi, &packet);
356 sr_sw_limits_update_samples_read(&devc->limits, 1);
358 next_measurement(devc);
360 if (sr_sw_limits_check(&devc->limits))
361 sr_dev_acquisition_stop(sdi);