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e75ee7de HV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Hannu Vuolasaho <vuokkosetae@gmail.com> | |
3f9b48ae | 5 | * Copyright (C) 2018 Frank Stettner <frank-stettner@gmx.net> |
e75ee7de HV |
6 | * |
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. | |
11 | * | |
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. | |
16 | * | |
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/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "protocol.h" | |
23 | ||
d7083042 HV |
24 | #define REQ_TIMEOUT_MS 500 |
25 | #define DEVICE_PROCESSING_TIME_MS 80 | |
26 | ||
16fc7ee2 | 27 | SR_PRIV int korad_kaxxxxp_send_cmd(struct sr_serial_dev_inst *serial, |
d7083042 HV |
28 | const char *cmd) |
29 | { | |
30 | int ret; | |
31 | ||
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); | |
35 | return ret; | |
36 | } | |
37 | ||
38 | return ret; | |
39 | } | |
40 | ||
16fc7ee2 | 41 | SR_PRIV int korad_kaxxxxp_read_chars(struct sr_serial_dev_inst *serial, |
d7083042 HV |
42 | int count, char *buf) |
43 | { | |
44 | int ret, received, turns; | |
45 | ||
46 | received = 0; | |
47 | turns = 0; | |
48 | ||
49 | do { | |
50 | if ((ret = serial_read_blocking(serial, buf + received, | |
51 | count - received, | |
52 | serial_timeout(serial, count))) < 0) { | |
53 | sr_err("Error %d reading %d bytes from device.", | |
54 | ret, count); | |
55 | return ret; | |
56 | } | |
57 | received += ret; | |
58 | turns++; | |
59 | } while ((received < count) && (turns < 100)); | |
60 | ||
61 | buf[count] = 0; | |
62 | ||
63 | sr_spew("Received: '%s'.", buf); | |
64 | ||
65 | return ret; | |
66 | } | |
67 | ||
68 | static void give_device_time_to_process(struct dev_context *devc) | |
69 | { | |
70 | int64_t sleeping_time; | |
71 | ||
72 | sleeping_time = devc->req_sent_at + (DEVICE_PROCESSING_TIME_MS * 1000); | |
73 | sleeping_time -= g_get_monotonic_time(); | |
74 | ||
75 | if (sleeping_time > 0) { | |
76 | g_usleep(sleeping_time); | |
ef2bcf11 | 77 | sr_spew("Sleeping for processing %" PRIi64 " usec", sleeping_time); |
d7083042 HV |
78 | } |
79 | } | |
80 | ||
16fc7ee2 | 81 | SR_PRIV int korad_kaxxxxp_set_value(struct sr_serial_dev_inst *serial, |
3f9b48ae | 82 | int target, struct dev_context *devc) |
d7083042 | 83 | { |
8f39d569 | 84 | char *msg; |
2c240774 | 85 | const char *cmd; |
d7083042 HV |
86 | float value; |
87 | int ret; | |
88 | ||
3f9b48ae | 89 | g_mutex_lock(&devc->rw_mutex); |
d7083042 HV |
90 | give_device_time_to_process(devc); |
91 | ||
3f9b48ae | 92 | switch (target) { |
16fc7ee2 UH |
93 | case KAXXXXP_CURRENT: |
94 | case KAXXXXP_VOLTAGE: | |
95 | case KAXXXXP_STATUS: | |
3f9b48ae FS |
96 | sr_err("Can't set measurable parameter %d.", target); |
97 | g_mutex_unlock(&devc->rw_mutex); | |
d7083042 | 98 | return SR_ERR; |
8da30037 | 99 | case KAXXXXP_CURRENT_LIMIT: |
d7083042 | 100 | cmd = "ISET1:%05.3f"; |
8da30037 | 101 | value = devc->set_current_limit; |
d7083042 | 102 | break; |
8da30037 | 103 | case KAXXXXP_VOLTAGE_TARGET: |
d7083042 | 104 | cmd = "VSET1:%05.2f"; |
8da30037 | 105 | value = devc->set_voltage_target; |
d7083042 | 106 | break; |
16fc7ee2 | 107 | case KAXXXXP_OUTPUT: |
d7083042 | 108 | cmd = "OUT%01.0f"; |
8da30037 FS |
109 | value = (devc->set_output_enabled) ? 1 : 0; |
110 | /* Set value back to recognize changes */ | |
111 | devc->output_enabled = devc->set_output_enabled; | |
d7083042 | 112 | break; |
16fc7ee2 | 113 | case KAXXXXP_BEEP: |
d7083042 | 114 | cmd = "BEEP%01.0f"; |
8da30037 | 115 | value = (devc->set_beep_enabled) ? 1 : 0; |
d7083042 | 116 | break; |
16fc7ee2 | 117 | case KAXXXXP_OCP: |
c40ed60f | 118 | cmd = "OCP%01.0f"; |
8da30037 FS |
119 | value = (devc->set_ocp_enabled) ? 1 : 0; |
120 | /* Set value back to recognize changes */ | |
121 | devc->ocp_enabled = devc->set_ocp_enabled; | |
c40ed60f | 122 | break; |
16fc7ee2 | 123 | case KAXXXXP_OVP: |
c40ed60f | 124 | cmd = "OVP%01.0f"; |
8da30037 FS |
125 | value = (devc->set_ovp_enabled) ? 1 : 0; |
126 | /* Set value back to recognize changes */ | |
127 | devc->ovp_enabled = devc->set_ovp_enabled; | |
c40ed60f | 128 | break; |
16fc7ee2 | 129 | case KAXXXXP_SAVE: |
d7083042 HV |
130 | cmd = "SAV%01.0f"; |
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); | |
3f9b48ae | 134 | g_mutex_unlock(&devc->rw_mutex); |
d7083042 HV |
135 | return SR_ERR; |
136 | } | |
137 | value = devc->program; | |
138 | break; | |
16fc7ee2 | 139 | case KAXXXXP_RECALL: |
d7083042 HV |
140 | cmd = "RCL%01.0f"; |
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); | |
3f9b48ae | 144 | g_mutex_unlock(&devc->rw_mutex); |
d7083042 HV |
145 | return SR_ERR; |
146 | } | |
147 | value = devc->program; | |
148 | break; | |
149 | default: | |
3f9b48ae FS |
150 | sr_err("Don't know how to set %d.", target); |
151 | g_mutex_unlock(&devc->rw_mutex); | |
d7083042 HV |
152 | return SR_ERR; |
153 | } | |
154 | ||
8f39d569 | 155 | msg = g_malloc0(20 + 1); |
d7083042 | 156 | if (cmd) |
8f39d569 | 157 | sr_snprintf_ascii(msg, 20, cmd, value); |
d7083042 | 158 | |
16fc7ee2 | 159 | ret = korad_kaxxxxp_send_cmd(serial, msg); |
d7083042 | 160 | devc->req_sent_at = g_get_monotonic_time(); |
8f39d569 | 161 | g_free(msg); |
3f9b48ae FS |
162 | |
163 | g_mutex_unlock(&devc->rw_mutex); | |
d7083042 HV |
164 | |
165 | return ret; | |
166 | } | |
167 | ||
3f9b48ae FS |
168 | SR_PRIV int korad_kaxxxxp_get_value(struct sr_serial_dev_inst *serial, |
169 | int target, struct dev_context *devc) | |
d7083042 | 170 | { |
3f9b48ae FS |
171 | int ret, count; |
172 | char reply[6]; | |
173 | float *value; | |
174 | char status_byte; | |
d7083042 | 175 | |
3f9b48ae | 176 | g_mutex_lock(&devc->rw_mutex); |
d7083042 HV |
177 | give_device_time_to_process(devc); |
178 | ||
3f9b48ae FS |
179 | value = NULL; |
180 | count = 5; | |
181 | ||
182 | switch (target) { | |
16fc7ee2 | 183 | case KAXXXXP_CURRENT: |
d7083042 | 184 | /* Read current from device. */ |
16fc7ee2 | 185 | ret = korad_kaxxxxp_send_cmd(serial, "IOUT1?"); |
3f9b48ae | 186 | value = &(devc->current); |
d7083042 | 187 | break; |
8da30037 | 188 | case KAXXXXP_CURRENT_LIMIT: |
d7083042 | 189 | /* Read set current from device. */ |
16fc7ee2 | 190 | ret = korad_kaxxxxp_send_cmd(serial, "ISET1?"); |
8da30037 | 191 | value = &(devc->current_limit); |
d7083042 | 192 | break; |
16fc7ee2 | 193 | case KAXXXXP_VOLTAGE: |
d7083042 | 194 | /* Read voltage from device. */ |
16fc7ee2 | 195 | ret = korad_kaxxxxp_send_cmd(serial, "VOUT1?"); |
3f9b48ae | 196 | value = &(devc->voltage); |
d7083042 | 197 | break; |
8da30037 | 198 | case KAXXXXP_VOLTAGE_TARGET: |
d7083042 | 199 | /* Read set voltage from device. */ |
16fc7ee2 | 200 | ret = korad_kaxxxxp_send_cmd(serial, "VSET1?"); |
8da30037 | 201 | value = &(devc->voltage_target); |
d7083042 | 202 | break; |
16fc7ee2 UH |
203 | case KAXXXXP_STATUS: |
204 | case KAXXXXP_OUTPUT: | |
3f9b48ae FS |
205 | case KAXXXXP_OCP: |
206 | case KAXXXXP_OVP: | |
d7083042 | 207 | /* Read status from device. */ |
16fc7ee2 | 208 | ret = korad_kaxxxxp_send_cmd(serial, "STATUS?"); |
3f9b48ae | 209 | count = 1; |
d7083042 HV |
210 | break; |
211 | default: | |
3f9b48ae FS |
212 | sr_err("Don't know how to query %d.", target); |
213 | g_mutex_unlock(&devc->rw_mutex); | |
d7083042 HV |
214 | return SR_ERR; |
215 | } | |
216 | ||
217 | devc->req_sent_at = g_get_monotonic_time(); | |
d7083042 | 218 | |
3f9b48ae FS |
219 | if ((ret = korad_kaxxxxp_read_chars(serial, count, reply)) < 0) { |
220 | g_mutex_unlock(&devc->rw_mutex); | |
d7083042 | 221 | return ret; |
3f9b48ae | 222 | } |
d7083042 | 223 | |
3f9b48ae | 224 | reply[count] = 0; |
d7083042 | 225 | |
3f9b48ae FS |
226 | if (value) { |
227 | sr_atof_ascii((const char *)&reply, value); | |
228 | sr_dbg("value: %f", *value); | |
d7083042 HV |
229 | } else { |
230 | /* We have status reply. */ | |
3f9b48ae | 231 | status_byte = reply[0]; |
d7083042 HV |
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 */ | |
235 | /* | |
236 | * Tracking | |
237 | * status_byte & ((1 << 2) | (1 << 3)) | |
238 | * 00 independent 01 series 11 parallel | |
239 | */ | |
240 | devc->beep_enabled = (1 << 4); | |
9e5366df | 241 | devc->ocp_enabled = (status_byte & (1 << 5)); |
d7083042 | 242 | devc->output_enabled = (status_byte & (1 << 6)); |
c40ed60f HV |
243 | /* Velleman LABPS3005 quirk */ |
244 | if (devc->output_enabled) | |
9e5366df | 245 | devc->ovp_enabled = (status_byte & (1 << 7)); |
d7083042 | 246 | sr_dbg("Status: 0x%02x", status_byte); |
c40ed60f HV |
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 " | |
8da30037 | 250 | "and extra bit is %s.", |
d7083042 HV |
251 | (status_byte & (1 << 0)) ? "voltage" : "current", |
252 | (status_byte & (1 << 1)) ? "voltage" : "current", | |
c40ed60f | 253 | (status_byte & (1 << 2)) ? "parallel" : "series", |
d7083042 HV |
254 | (status_byte & (1 << 3)) ? "tracking" : "independent", |
255 | (status_byte & (1 << 4)) ? "beeping" : "silent", | |
256 | (status_byte & (1 << 5)) ? "locked" : "unlocked", | |
c40ed60f HV |
257 | (status_byte & (1 << 6)) ? "enabled" : "disabled", |
258 | (status_byte & (1 << 7)) ? "true" : "false"); | |
d7083042 | 259 | } |
3f9b48ae | 260 | |
8abdf006 | 261 | /* Read the sixth byte from ISET? BUG workaround. */ |
8da30037 | 262 | if (target == KAXXXXP_CURRENT_LIMIT) |
8abdf006 | 263 | serial_read_blocking(serial, &status_byte, 1, 10); |
3f9b48ae FS |
264 | |
265 | g_mutex_unlock(&devc->rw_mutex); | |
266 | ||
267 | return ret; | |
268 | } | |
269 | ||
270 | SR_PRIV int korad_kaxxxxp_get_all_values(struct sr_serial_dev_inst *serial, | |
271 | struct dev_context *devc) | |
272 | { | |
273 | int ret, target; | |
274 | ||
275 | for (target = KAXXXXP_CURRENT; | |
276 | target <= KAXXXXP_STATUS; target++) { | |
277 | if ((ret = korad_kaxxxxp_get_value(serial, target, devc)) < 0) | |
278 | return ret; | |
279 | } | |
d7083042 HV |
280 | |
281 | return ret; | |
282 | } | |
283 | ||
284 | static void next_measurement(struct dev_context *devc) | |
285 | { | |
3f9b48ae | 286 | switch (devc->acquisition_target) { |
16fc7ee2 | 287 | case KAXXXXP_CURRENT: |
3f9b48ae | 288 | devc->acquisition_target = KAXXXXP_VOLTAGE; |
d7083042 | 289 | break; |
16fc7ee2 | 290 | case KAXXXXP_VOLTAGE: |
3f9b48ae | 291 | devc->acquisition_target = KAXXXXP_STATUS; |
d7083042 | 292 | break; |
16fc7ee2 | 293 | case KAXXXXP_STATUS: |
3f9b48ae | 294 | devc->acquisition_target = KAXXXXP_CURRENT; |
d7083042 HV |
295 | break; |
296 | default: | |
3f9b48ae FS |
297 | devc->acquisition_target = KAXXXXP_CURRENT; |
298 | sr_err("Invalid target for next acquisition."); | |
d7083042 HV |
299 | } |
300 | } | |
301 | ||
16fc7ee2 | 302 | SR_PRIV int korad_kaxxxxp_receive_data(int fd, int revents, void *cb_data) |
e75ee7de | 303 | { |
d7083042 | 304 | struct sr_dev_inst *sdi; |
e75ee7de | 305 | struct dev_context *devc; |
d7083042 HV |
306 | struct sr_serial_dev_inst *serial; |
307 | struct sr_datafeed_packet packet; | |
2e715341 UH |
308 | struct sr_datafeed_analog analog; |
309 | struct sr_analog_encoding encoding; | |
310 | struct sr_analog_meaning meaning; | |
311 | struct sr_analog_spec spec; | |
23165d7b | 312 | GSList *l; |
e75ee7de HV |
313 | |
314 | (void)fd; | |
a7e48f3c | 315 | (void)revents; |
e75ee7de HV |
316 | |
317 | if (!(sdi = cb_data)) | |
318 | return TRUE; | |
319 | ||
320 | if (!(devc = sdi->priv)) | |
321 | return TRUE; | |
322 | ||
d7083042 HV |
323 | serial = sdi->conn; |
324 | ||
a7e48f3c FS |
325 | /* Get the value. */ |
326 | korad_kaxxxxp_get_value(serial, devc->acquisition_target, devc); | |
327 | ||
328 | /* Note: digits/spec_digits will be overridden later. */ | |
329 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
330 | ||
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; | |
d1a3f3be | 341 | analog.meaning->mqflags = SR_MQFLAG_DC; |
a7e48f3c FS |
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); | |
d7083042 | 357 | } |
a7e48f3c | 358 | next_measurement(devc); |
d7083042 | 359 | |
3f9b48ae | 360 | if (sr_sw_limits_check(&devc->limits)) |
d2f7c417 | 361 | sr_dev_acquisition_stop(sdi); |
e75ee7de HV |
362 | |
363 | return TRUE; | |
364 | } |