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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <string.h> | |
22 | #include "protocol.h" | |
23 | ||
24 | /* | |
25 | * The default serial communication settings on the device are 9600 | |
26 | * baud, 9 data bits. The 9th bit isn't actually used, and the vendor | |
27 | * software uses Mark parity to absorb the extra bit. | |
28 | * | |
29 | * Since 9 data bits is not a standard available in POSIX, we use two | |
30 | * stop bits to skip over the extra bit instead. | |
31 | */ | |
32 | #define SERIALCOMM "9600/8n2" | |
33 | ||
34 | static const uint32_t scanopts[] = { | |
35 | SR_CONF_CONN, | |
36 | SR_CONF_SERIALCOMM, | |
37 | }; | |
38 | ||
39 | static const uint32_t drvopts[] = { | |
40 | SR_CONF_POWER_SUPPLY, | |
41 | }; | |
42 | ||
43 | static const uint32_t devopts[] = { | |
44 | SR_CONF_CONTINUOUS, | |
45 | SR_CONF_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
46 | SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_GET | SR_CONF_SET, | |
47 | }; | |
48 | ||
49 | static const uint32_t devopts_cg[] = { | |
50 | SR_CONF_VOLTAGE | SR_CONF_GET, | |
51 | SR_CONF_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
52 | SR_CONF_CURRENT | SR_CONF_GET, | |
53 | SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
54 | SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET, | |
55 | }; | |
56 | ||
57 | static const char *channel_modes[] = { | |
58 | "Independent", | |
59 | "Series", | |
60 | "Parallel", | |
61 | }; | |
62 | ||
63 | static const struct pps_model models[] = { | |
64 | { PPS_3203T_3S, "PPS3203T-3S", | |
65 | CHANMODE_INDEPENDENT | CHANMODE_SERIES | CHANMODE_PARALLEL, | |
66 | 3, | |
67 | { | |
68 | /* Channel 1 */ | |
69 | { { 0, 32, 0.01 }, { 0, 3, 0.001 } }, | |
70 | /* Channel 2 */ | |
71 | { { 0, 32, 0.01 }, { 0, 3, 0.001 } }, | |
72 | /* Channel 3 */ | |
73 | { { 0, 6, 0.01 }, { 0, 3, 0.001 } }, | |
74 | }, | |
75 | }, | |
76 | }; | |
77 | ||
78 | static GSList *scan(struct sr_dev_driver *di, GSList *options, int modelid) | |
79 | { | |
80 | struct sr_dev_inst *sdi; | |
81 | struct dev_context *devc; | |
82 | struct sr_config *src; | |
83 | struct sr_channel *ch; | |
84 | struct sr_channel_group *cg; | |
85 | struct sr_serial_dev_inst *serial; | |
86 | GSList *l; | |
87 | const struct pps_model *model; | |
88 | uint8_t packet[PACKET_SIZE]; | |
89 | unsigned int i; | |
90 | int delay_ms, ret; | |
91 | const char *conn, *serialcomm; | |
92 | char channel[10]; | |
93 | ||
94 | conn = serialcomm = NULL; | |
95 | for (l = options; l; l = l->next) { | |
96 | src = l->data; | |
97 | switch (src->key) { | |
98 | case SR_CONF_CONN: | |
99 | conn = g_variant_get_string(src->data, NULL); | |
100 | break; | |
101 | case SR_CONF_SERIALCOMM: | |
102 | serialcomm = g_variant_get_string(src->data, NULL); | |
103 | break; | |
104 | } | |
105 | } | |
106 | if (!conn) | |
107 | return NULL; | |
108 | if (!serialcomm) | |
109 | serialcomm = SERIALCOMM; | |
110 | ||
111 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
112 | ||
113 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
114 | return NULL; | |
115 | ||
116 | /* This is how the vendor software scans for hardware. */ | |
117 | memset(packet, 0, PACKET_SIZE); | |
118 | packet[0] = 0xaa; | |
119 | packet[1] = 0xaa; | |
120 | delay_ms = serial_timeout(serial, PACKET_SIZE); | |
121 | if (serial_write_blocking(serial, packet, PACKET_SIZE, delay_ms) < PACKET_SIZE) { | |
122 | sr_err("Unable to write while probing for hardware."); | |
123 | return NULL; | |
124 | } | |
125 | /* The device responds with a 24-byte packet when it receives a packet. | |
126 | * At 9600 baud, 300ms is long enough for it to have arrived. */ | |
127 | g_usleep(300 * 1000); | |
128 | memset(packet, 0, PACKET_SIZE); | |
129 | if ((ret = serial_read_nonblocking(serial, packet, PACKET_SIZE)) < 0) { | |
130 | sr_err("Unable to read while probing for hardware: %s", | |
131 | sr_strerror(ret)); | |
132 | return NULL; | |
133 | } | |
134 | if (ret != PACKET_SIZE || packet[0] != 0xaa || packet[1] != 0xaa) { | |
135 | /* Doesn't look like an Atten PPS. */ | |
136 | return NULL; | |
137 | } | |
138 | ||
139 | model = NULL; | |
140 | for (i = 0; i < ARRAY_SIZE(models); i++) { | |
141 | if (models[i].modelid == modelid) { | |
142 | model = &models[i]; | |
143 | break; | |
144 | } | |
145 | } | |
146 | if (!model) { | |
147 | sr_err("Unknown modelid %d", modelid); | |
148 | return NULL; | |
149 | } | |
150 | ||
151 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
152 | sdi->status = SR_ST_INACTIVE; | |
153 | sdi->vendor = g_strdup("Atten"); | |
154 | sdi->model = g_strdup(model->name); | |
155 | sdi->inst_type = SR_INST_SERIAL; | |
156 | sdi->conn = serial; | |
157 | for (i = 0; i < MAX_CHANNELS; i++) { | |
158 | snprintf(channel, 10, "CH%d", i + 1); | |
159 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel); | |
160 | cg = sr_channel_group_new(sdi, channel, NULL); | |
161 | cg->channels = g_slist_append(NULL, ch); | |
162 | } | |
163 | ||
164 | devc = g_malloc0(sizeof(struct dev_context)); | |
165 | devc->model = model; | |
166 | devc->config = g_malloc0(sizeof(struct per_channel_config) * model->num_channels); | |
167 | devc->delay_ms = delay_ms; | |
168 | sdi->priv = devc; | |
169 | ||
170 | serial_close(serial); | |
171 | ||
172 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
173 | } | |
174 | ||
175 | static GSList *scan_3203(struct sr_dev_driver *di, GSList *options) | |
176 | { | |
177 | return scan(di, options, PPS_3203T_3S); | |
178 | } | |
179 | ||
180 | static int config_get(uint32_t key, GVariant **data, | |
181 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
182 | { | |
183 | struct dev_context *devc; | |
184 | struct sr_channel *ch; | |
185 | int channel; | |
186 | ||
187 | if (!sdi) | |
188 | return SR_ERR_ARG; | |
189 | ||
190 | devc = sdi->priv; | |
191 | ||
192 | if (!cg) { | |
193 | switch (key) { | |
194 | case SR_CONF_CHANNEL_CONFIG: | |
195 | *data = g_variant_new_string(channel_modes[devc->channel_mode]); | |
196 | break; | |
197 | case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED: | |
198 | *data = g_variant_new_boolean(devc->over_current_protection); | |
199 | break; | |
200 | default: | |
201 | return SR_ERR_NA; | |
202 | } | |
203 | } else { | |
204 | /* We only ever have one channel per channel group in this driver. */ | |
205 | ch = cg->channels->data; | |
206 | channel = ch->index; | |
207 | ||
208 | switch (key) { | |
209 | case SR_CONF_VOLTAGE: | |
210 | *data = g_variant_new_double(devc->config[channel].output_voltage_last); | |
211 | break; | |
212 | case SR_CONF_VOLTAGE_TARGET: | |
213 | *data = g_variant_new_double(devc->config[channel].output_voltage_max); | |
214 | break; | |
215 | case SR_CONF_CURRENT: | |
216 | *data = g_variant_new_double(devc->config[channel].output_current_last); | |
217 | break; | |
218 | case SR_CONF_CURRENT_LIMIT: | |
219 | *data = g_variant_new_double(devc->config[channel].output_current_max); | |
220 | break; | |
221 | case SR_CONF_ENABLED: | |
222 | *data = g_variant_new_boolean(devc->config[channel].output_enabled); | |
223 | break; | |
224 | default: | |
225 | return SR_ERR_NA; | |
226 | } | |
227 | } | |
228 | ||
229 | return SR_OK; | |
230 | } | |
231 | ||
232 | static int config_set(uint32_t key, GVariant *data, | |
233 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
234 | { | |
235 | struct dev_context *devc; | |
236 | struct sr_channel *ch; | |
237 | gdouble dval; | |
238 | int channel, ival; | |
239 | gboolean bval; | |
240 | ||
241 | devc = sdi->priv; | |
242 | ||
243 | if (!cg) { | |
244 | switch (key) { | |
245 | case SR_CONF_CHANNEL_CONFIG: | |
246 | if ((ival = std_str_idx(data, ARRAY_AND_SIZE(channel_modes))) < 0) | |
247 | return SR_ERR_ARG; | |
248 | if (devc->model->channel_modes && (1 << ival) == 0) | |
249 | return SR_ERR_ARG; /* Not supported on this model. */ | |
250 | if (ival == devc->channel_mode_set) | |
251 | break; /* Nothing to do. */ | |
252 | devc->channel_mode_set = ival; | |
253 | devc->config_dirty = TRUE; | |
254 | break; | |
255 | case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED: | |
256 | bval = g_variant_get_boolean(data); | |
257 | if (bval == devc->over_current_protection_set) | |
258 | break; /* Nothing to do. */ | |
259 | devc->over_current_protection_set = bval; | |
260 | devc->config_dirty = TRUE; | |
261 | break; | |
262 | default: | |
263 | return SR_ERR_NA; | |
264 | } | |
265 | } else { | |
266 | /* We only ever have one channel per channel group in this driver. */ | |
267 | ch = cg->channels->data; | |
268 | channel = ch->index; | |
269 | ||
270 | switch (key) { | |
271 | case SR_CONF_VOLTAGE_TARGET: | |
272 | dval = g_variant_get_double(data); | |
273 | if (dval < 0 || dval > devc->model->channels[channel].voltage[1]) | |
274 | return SR_ERR_ARG; | |
275 | devc->config[channel].output_voltage_max = dval; | |
276 | devc->config_dirty = TRUE; | |
277 | break; | |
278 | case SR_CONF_CURRENT_LIMIT: | |
279 | dval = g_variant_get_double(data); | |
280 | if (dval < 0 || dval > devc->model->channels[channel].current[1]) | |
281 | return SR_ERR_ARG; | |
282 | devc->config[channel].output_current_max = dval; | |
283 | devc->config_dirty = TRUE; | |
284 | break; | |
285 | case SR_CONF_ENABLED: | |
286 | bval = g_variant_get_boolean(data); | |
287 | if (bval == devc->config[channel].output_enabled_set) | |
288 | break; /* Nothing to do. */ | |
289 | devc->config[channel].output_enabled_set = bval; | |
290 | devc->config_dirty = TRUE; | |
291 | break; | |
292 | default: | |
293 | return SR_ERR_NA; | |
294 | } | |
295 | } | |
296 | ||
297 | return SR_OK; | |
298 | } | |
299 | ||
300 | static int config_list(uint32_t key, GVariant **data, | |
301 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
302 | { | |
303 | struct dev_context *devc; | |
304 | struct sr_channel *ch; | |
305 | int channel; | |
306 | ||
307 | devc = (sdi) ? sdi->priv : NULL; | |
308 | ||
309 | if (!cg) { | |
310 | switch (key) { | |
311 | case SR_CONF_SCAN_OPTIONS: | |
312 | case SR_CONF_DEVICE_OPTIONS: | |
313 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
314 | case SR_CONF_CHANNEL_CONFIG: | |
315 | if (!devc || !devc->model) | |
316 | return SR_ERR_ARG; | |
317 | if (devc->model->channel_modes == CHANMODE_INDEPENDENT) { | |
318 | /* The 1-channel models. */ | |
319 | *data = g_variant_new_strv(channel_modes, 1); | |
320 | } else { | |
321 | /* The other models support all modes. */ | |
322 | *data = g_variant_new_strv(ARRAY_AND_SIZE(channel_modes)); | |
323 | } | |
324 | break; | |
325 | default: | |
326 | return SR_ERR_NA; | |
327 | } | |
328 | } else { | |
329 | /* We only ever have one channel per channel group in this driver. */ | |
330 | ch = cg->channels->data; | |
331 | channel = ch->index; | |
332 | ||
333 | switch (key) { | |
334 | case SR_CONF_DEVICE_OPTIONS: | |
335 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg)); | |
336 | break; | |
337 | case SR_CONF_VOLTAGE_TARGET: | |
338 | if (!devc || !devc->model) | |
339 | return SR_ERR_ARG; | |
340 | *data = std_gvar_min_max_step_array(devc->model->channels[channel].voltage); | |
341 | break; | |
342 | case SR_CONF_CURRENT_LIMIT: | |
343 | if (!devc || !devc->model) | |
344 | return SR_ERR_ARG; | |
345 | *data = std_gvar_min_max_step_array(devc->model->channels[channel].current); | |
346 | break; | |
347 | default: | |
348 | return SR_ERR_NA; | |
349 | } | |
350 | } | |
351 | ||
352 | return SR_OK; | |
353 | } | |
354 | ||
355 | static int dev_close(struct sr_dev_inst *sdi) | |
356 | { | |
357 | struct dev_context *devc; | |
358 | ||
359 | devc = sdi->priv; | |
360 | ||
361 | if (devc->config_dirty) | |
362 | /* Some configuration changes were queued up but didn't | |
363 | * get sent to the device, likely because we were never | |
364 | * in acquisition mode. Send them out now. */ | |
365 | send_config(sdi); | |
366 | ||
367 | return std_serial_dev_close(sdi); | |
368 | } | |
369 | ||
370 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
371 | { | |
372 | struct dev_context *devc; | |
373 | struct sr_serial_dev_inst *serial; | |
374 | uint8_t packet[PACKET_SIZE]; | |
375 | ||
376 | devc = sdi->priv; | |
377 | memset(devc->packet, 0x44, PACKET_SIZE); | |
378 | devc->packet_size = 0; | |
379 | ||
380 | devc->acquisition_running = TRUE; | |
381 | ||
382 | serial = sdi->conn; | |
383 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
384 | atten_pps3xxx_receive_data, (void *)sdi); | |
385 | std_session_send_df_header(sdi); | |
386 | ||
387 | /* Send a "channel" configuration packet now. */ | |
388 | memset(packet, 0, PACKET_SIZE); | |
389 | packet[0] = 0xaa; | |
390 | packet[1] = 0xaa; | |
391 | send_packet(sdi, packet); | |
392 | ||
393 | return SR_OK; | |
394 | } | |
395 | ||
396 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
397 | { | |
398 | struct dev_context *devc; | |
399 | ||
400 | devc = sdi->priv; | |
401 | devc->acquisition_running = FALSE; | |
402 | ||
403 | return SR_OK; | |
404 | } | |
405 | ||
406 | static struct sr_dev_driver atten_pps3203_driver_info = { | |
407 | .name = "atten-pps3203", | |
408 | .longname = "Atten PPS3203T-3S", | |
409 | .api_version = 1, | |
410 | .init = std_init, | |
411 | .cleanup = std_cleanup, | |
412 | .scan = scan_3203, | |
413 | .dev_list = std_dev_list, | |
414 | .dev_clear = std_dev_clear, | |
415 | .config_get = config_get, | |
416 | .config_set = config_set, | |
417 | .config_list = config_list, | |
418 | .dev_open = std_serial_dev_open, | |
419 | .dev_close = dev_close, | |
420 | .dev_acquisition_start = dev_acquisition_start, | |
421 | .dev_acquisition_stop = dev_acquisition_stop, | |
422 | .context = NULL, | |
423 | }; | |
424 | SR_REGISTER_DEV_DRIVER(atten_pps3203_driver_info); |