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Commit | Line | Data |
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4f7fdcdd SA |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Sergey Alirzaev <zl29ah@gmail.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 | ||
cee6d3fa | 20 | #include <config.h> |
4f7fdcdd SA |
21 | #include <ftdi.h> |
22 | #include <libusb.h> | |
cee6d3fa SA |
23 | #include <libsigrok/libsigrok.h> |
24 | #include "libsigrok-internal.h" | |
4f7fdcdd SA |
25 | #include "protocol.h" |
26 | ||
4f7fdcdd | 27 | static const uint32_t scanopts[] = { |
cee6d3fa | 28 | SR_CONF_CONN, |
4f7fdcdd SA |
29 | }; |
30 | ||
05199c0a | 31 | static const uint32_t drvopts[] = { |
4f7fdcdd | 32 | SR_CONF_LOGIC_ANALYZER, |
05199c0a UH |
33 | }; |
34 | ||
35 | static const uint32_t devopts[] = { | |
e91bb0a6 | 36 | SR_CONF_CONTINUOUS, |
4f7fdcdd SA |
37 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, |
38 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
cee6d3fa | 39 | SR_CONF_CONN | SR_CONF_GET, |
4f7fdcdd SA |
40 | }; |
41 | ||
42 | static const uint64_t samplerates[] = { | |
43 | SR_HZ(3600), | |
44 | SR_MHZ(10), | |
45 | SR_HZ(1), | |
46 | }; | |
47 | ||
48 | static const struct ftdi_chip_desc ft2232h_desc = { | |
49 | .vendor = 0x0403, | |
50 | .product = 0x6010, | |
51 | .samplerate_div = 20, | |
52 | .channel_names = { | |
f8195cb2 UH |
53 | "ADBUS0", "ADBUS1", "ADBUS2", "ADBUS3", |
54 | "ADBUS4", "ADBUS5", "ADBUS6", "ADBUS7", | |
4f7fdcdd SA |
55 | /* TODO: BDBUS[0..7] channels. */ |
56 | NULL | |
57 | } | |
58 | }; | |
59 | ||
60 | static const struct ftdi_chip_desc ft232r_desc = { | |
61 | .vendor = 0x0403, | |
62 | .product = 0x6001, | |
63 | .samplerate_div = 30, | |
64 | .channel_names = { | |
f8195cb2 | 65 | "TXD", "RXD", "RTS#", "CTS#", "DTR#", "DSR#", "DCD#", "RI#", |
4f7fdcdd SA |
66 | NULL |
67 | } | |
68 | }; | |
69 | ||
c7a51272 P |
70 | static const struct ftdi_chip_desc ft232h_desc = { |
71 | .vendor = 0x0403, | |
72 | .product = 0x6014, | |
73 | .samplerate_div = 30, | |
74 | .channel_names = { | |
75 | "ADBUS0", "ADBUS1", "ADBUS2", "ADBUS3", "ADBUS4", "ADBUS5", "ADBUS6", "ADBUS7", | |
76 | NULL | |
77 | } | |
78 | }; | |
79 | ||
4f7fdcdd SA |
80 | static const struct ftdi_chip_desc *chip_descs[] = { |
81 | &ft2232h_desc, | |
82 | &ft232r_desc, | |
c7a51272 | 83 | &ft232h_desc, |
4f7fdcdd SA |
84 | }; |
85 | ||
15a5bfe4 | 86 | static void scan_device(struct ftdi_context *ftdic, |
07a91752 | 87 | struct libusb_device *dev, GSList **devices) |
4f7fdcdd | 88 | { |
4f7fdcdd SA |
89 | struct libusb_device_descriptor usb_desc; |
90 | const struct ftdi_chip_desc *desc; | |
cee6d3fa | 91 | struct dev_context *devc; |
4f7fdcdd | 92 | char *vendor, *model, *serial_num; |
cee6d3fa | 93 | struct sr_dev_inst *sdi; |
cee6d3fa | 94 | int rv; |
4f7fdcdd | 95 | |
cee6d3fa SA |
96 | libusb_get_device_descriptor(dev, &usb_desc); |
97 | ||
98 | desc = NULL; | |
99 | for (unsigned long i = 0; i < ARRAY_SIZE(chip_descs); i++) { | |
100 | desc = chip_descs[i]; | |
101 | if (desc->vendor == usb_desc.idVendor && | |
102 | desc->product == usb_desc.idProduct) | |
103 | break; | |
104 | } | |
105 | ||
106 | if (!desc) { | |
107 | sr_spew("Unsupported FTDI device 0x%4x:0x%4x.", | |
108 | usb_desc.idVendor, usb_desc.idProduct); | |
109 | return; | |
110 | } | |
4f7fdcdd | 111 | |
4f7fdcdd SA |
112 | devc = g_malloc0(sizeof(struct dev_context)); |
113 | ||
114 | /* Allocate memory for the incoming data. */ | |
115 | devc->data_buf = g_malloc0(DATA_BUF_SIZE); | |
116 | ||
cee6d3fa SA |
117 | devc->desc = desc; |
118 | ||
119 | vendor = g_malloc(32); | |
120 | model = g_malloc(32); | |
121 | serial_num = g_malloc(32); | |
07a91752 | 122 | rv = ftdi_usb_get_strings(ftdic, dev, vendor, 32, |
d9251a2c | 123 | model, 32, serial_num, 32); |
cee6d3fa SA |
124 | switch (rv) { |
125 | case 0: | |
126 | break; | |
127 | case -9: | |
128 | sr_dbg("The device lacks a serial number."); | |
129 | g_free(serial_num); | |
130 | serial_num = NULL; | |
131 | break; | |
132 | default: | |
133 | sr_err("Failed to get the FTDI strings: %d", rv); | |
134 | goto err_free_strings; | |
135 | } | |
136 | sr_dbg("Found an FTDI device: %s.", model); | |
137 | ||
cee6d3fa | 138 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
45884333 | 139 | sdi->status = SR_ST_INACTIVE; |
cee6d3fa SA |
140 | sdi->vendor = vendor; |
141 | sdi->model = model; | |
142 | sdi->serial_num = serial_num; | |
cee6d3fa | 143 | sdi->priv = devc; |
634d7299 LPC |
144 | sdi->connection_id = g_strdup_printf("d:%u/%u", |
145 | libusb_get_bus_number(dev), libusb_get_device_address(dev)); | |
cee6d3fa SA |
146 | |
147 | for (char *const *chan = &(desc->channel_names[0]); *chan; chan++) | |
148 | sr_channel_new(sdi, chan - &(desc->channel_names[0]), | |
149 | SR_CHANNEL_LOGIC, TRUE, *chan); | |
150 | ||
151 | *devices = g_slist_append(*devices, sdi); | |
cee6d3fa SA |
152 | return; |
153 | ||
154 | err_free_strings: | |
155 | g_free(vendor); | |
156 | g_free(model); | |
157 | g_free(serial_num); | |
cee6d3fa SA |
158 | g_free(devc->data_buf); |
159 | g_free(devc); | |
160 | } | |
161 | ||
15a5bfe4 | 162 | static GSList *scan_all(struct ftdi_context *ftdic, GSList *options) |
cee6d3fa SA |
163 | { |
164 | GSList *devices; | |
165 | struct ftdi_device_list *devlist = 0; | |
166 | struct ftdi_device_list *curdev; | |
cee6d3fa SA |
167 | int ret; |
168 | ||
169 | (void)options; | |
170 | ||
171 | devices = NULL; | |
172 | ||
cee6d3fa | 173 | ret = ftdi_usb_find_all(ftdic, &devlist, 0, 0); |
4f7fdcdd SA |
174 | if (ret < 0) { |
175 | sr_err("Failed to list devices (%d): %s", ret, | |
cee6d3fa | 176 | ftdi_get_error_string(ftdic)); |
07a91752 | 177 | return NULL; |
4f7fdcdd SA |
178 | } |
179 | ||
4f7fdcdd SA |
180 | curdev = devlist; |
181 | while (curdev) { | |
15a5bfe4 | 182 | scan_device(ftdic, curdev->dev, &devices); |
4f7fdcdd SA |
183 | curdev = curdev->next; |
184 | } | |
185 | ||
7b6072d3 | 186 | ftdi_list_free(&devlist); |
7b6072d3 | 187 | |
4f7fdcdd | 188 | return devices; |
4f7fdcdd SA |
189 | } |
190 | ||
cee6d3fa SA |
191 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
192 | { | |
07a91752 | 193 | struct ftdi_context *ftdic; |
cee6d3fa SA |
194 | struct sr_config *src; |
195 | struct sr_usb_dev_inst *usb; | |
196 | const char *conn; | |
197 | GSList *l, *conn_devices; | |
198 | GSList *devices; | |
199 | struct drv_context *drvc; | |
200 | libusb_device **devlist; | |
201 | int i; | |
202 | ||
203 | drvc = di->context; | |
cee6d3fa SA |
204 | conn = NULL; |
205 | for (l = options; l; l = l->next) { | |
206 | src = l->data; | |
207 | if (src->key == SR_CONF_CONN) { | |
208 | conn = g_variant_get_string(src->data, NULL); | |
209 | break; | |
210 | } | |
211 | } | |
07a91752 | 212 | |
07a91752 LPC |
213 | ftdic = ftdi_new(); |
214 | if (!ftdic) { | |
215 | sr_err("Failed to initialize libftdi."); | |
216 | return NULL; | |
217 | } | |
218 | ||
cee6d3fa SA |
219 | if (conn) { |
220 | devices = NULL; | |
221 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
222 | for (i = 0; devlist[i]; i++) { | |
223 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
224 | for (l = conn_devices; l; l = l->next) { | |
225 | usb = l->data; | |
226 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
227 | && usb->address == libusb_get_device_address(devlist[i])) { | |
15a5bfe4 | 228 | scan_device(ftdic, devlist[i], &devices); |
cee6d3fa SA |
229 | } |
230 | } | |
231 | } | |
232 | libusb_free_device_list(devlist, 1); | |
cee6d3fa | 233 | } else |
15a5bfe4 | 234 | devices = scan_all(ftdic, options); |
07a91752 LPC |
235 | |
236 | ftdi_free(ftdic); | |
237 | ||
15a5bfe4 | 238 | return std_scan_complete(di, devices); |
cee6d3fa SA |
239 | } |
240 | ||
3553451f | 241 | static void clear_helper(struct dev_context *devc) |
4f7fdcdd | 242 | { |
4f7fdcdd | 243 | g_free(devc->data_buf); |
4f7fdcdd SA |
244 | } |
245 | ||
246 | static int dev_clear(const struct sr_dev_driver *di) | |
247 | { | |
3553451f | 248 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); |
4f7fdcdd SA |
249 | } |
250 | ||
251 | static int dev_open(struct sr_dev_inst *sdi) | |
252 | { | |
253 | struct dev_context *devc; | |
254 | int ret = SR_OK; | |
255 | ||
256 | devc = sdi->priv; | |
257 | ||
07a91752 LPC |
258 | devc->ftdic = ftdi_new(); |
259 | if (!devc->ftdic) | |
260 | return SR_ERR; | |
261 | ||
634d7299 | 262 | ret = ftdi_usb_open_string(devc->ftdic, sdi->connection_id); |
4f7fdcdd SA |
263 | if (ret < 0) { |
264 | /* Log errors, except for -3 ("device not found"). */ | |
265 | if (ret != -3) | |
266 | sr_err("Failed to open device (%d): %s", ret, | |
267 | ftdi_get_error_string(devc->ftdic)); | |
07a91752 | 268 | goto err_ftdi_free; |
4f7fdcdd SA |
269 | } |
270 | ||
4f7fdcdd SA |
271 | ret = ftdi_usb_purge_buffers(devc->ftdic); |
272 | if (ret < 0) { | |
273 | sr_err("Failed to purge FTDI RX/TX buffers (%d): %s.", | |
274 | ret, ftdi_get_error_string(devc->ftdic)); | |
275 | goto err_dev_open_close_ftdic; | |
276 | } | |
4f7fdcdd | 277 | |
4f7fdcdd SA |
278 | ret = ftdi_set_bitmode(devc->ftdic, 0x00, BITMODE_RESET); |
279 | if (ret < 0) { | |
280 | sr_err("Failed to reset the FTDI chip bitmode (%d): %s.", | |
281 | ret, ftdi_get_error_string(devc->ftdic)); | |
282 | goto err_dev_open_close_ftdic; | |
283 | } | |
4f7fdcdd SA |
284 | |
285 | ret = ftdi_set_bitmode(devc->ftdic, 0x00, BITMODE_BITBANG); | |
286 | if (ret < 0) { | |
287 | sr_err("Failed to put FTDI chip into bitbang mode (%d): %s.", | |
288 | ret, ftdi_get_error_string(devc->ftdic)); | |
289 | goto err_dev_open_close_ftdic; | |
290 | } | |
4f7fdcdd | 291 | |
4f7fdcdd | 292 | return SR_OK; |
7e463623 | 293 | |
4f7fdcdd SA |
294 | err_dev_open_close_ftdic: |
295 | ftdi_usb_close(devc->ftdic); | |
7e463623 | 296 | |
07a91752 LPC |
297 | err_ftdi_free: |
298 | ftdi_free(devc->ftdic); | |
7e463623 | 299 | |
4f7fdcdd SA |
300 | return SR_ERR; |
301 | } | |
302 | ||
303 | static int dev_close(struct sr_dev_inst *sdi) | |
304 | { | |
305 | struct dev_context *devc; | |
306 | ||
307 | devc = sdi->priv; | |
308 | ||
f1ba6b4b UH |
309 | if (!devc->ftdic) |
310 | return SR_ERR_BUG; | |
4f7fdcdd | 311 | |
f1ba6b4b UH |
312 | ftdi_usb_close(devc->ftdic); |
313 | ftdi_free(devc->ftdic); | |
314 | devc->ftdic = NULL; | |
4f7fdcdd SA |
315 | |
316 | return SR_OK; | |
317 | } | |
318 | ||
4f7fdcdd SA |
319 | static int config_get(uint32_t key, GVariant **data, |
320 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
321 | { | |
4f7fdcdd | 322 | struct dev_context *devc; |
cee6d3fa | 323 | struct sr_usb_dev_inst *usb; |
4f7fdcdd SA |
324 | |
325 | (void)cg; | |
326 | ||
327 | devc = sdi->priv; | |
328 | ||
4f7fdcdd SA |
329 | switch (key) { |
330 | case SR_CONF_SAMPLERATE: | |
331 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
332 | break; | |
cee6d3fa SA |
333 | case SR_CONF_CONN: |
334 | if (!sdi || !sdi->conn) | |
335 | return SR_ERR_ARG; | |
336 | usb = sdi->conn; | |
95c1fe62 | 337 | *data = g_variant_new_printf("%d.%d", usb->bus, usb->address); |
cee6d3fa | 338 | break; |
4f7fdcdd SA |
339 | default: |
340 | return SR_ERR_NA; | |
341 | } | |
342 | ||
a9010323 | 343 | return SR_OK; |
4f7fdcdd SA |
344 | } |
345 | ||
4f7fdcdd SA |
346 | static int config_set(uint32_t key, GVariant *data, |
347 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
348 | { | |
4f7fdcdd SA |
349 | struct dev_context *devc; |
350 | uint64_t value; | |
351 | ||
352 | (void)cg; | |
353 | ||
4f7fdcdd SA |
354 | devc = sdi->priv; |
355 | ||
4f7fdcdd SA |
356 | switch (key) { |
357 | case SR_CONF_LIMIT_MSEC: | |
358 | value = g_variant_get_uint64(data); | |
359 | /* TODO: Implement. */ | |
f6051b9e | 360 | (void)value; |
a9010323 | 361 | return SR_ERR_NA; |
4f7fdcdd | 362 | case SR_CONF_LIMIT_SAMPLES: |
4f7fdcdd SA |
363 | devc->limit_samples = g_variant_get_uint64(data); |
364 | break; | |
365 | case SR_CONF_SAMPLERATE: | |
366 | value = g_variant_get_uint64(data); | |
367 | if (value < 3600) | |
368 | return SR_ERR_SAMPLERATE; | |
369 | devc->cur_samplerate = value; | |
f2273382 | 370 | return ftdi_la_set_samplerate(devc); |
4f7fdcdd | 371 | default: |
a9010323 | 372 | return SR_ERR_NA; |
4f7fdcdd SA |
373 | } |
374 | ||
a9010323 | 375 | return SR_OK; |
4f7fdcdd SA |
376 | } |
377 | ||
378 | static int config_list(uint32_t key, GVariant **data, | |
379 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
380 | { | |
4f7fdcdd SA |
381 | switch (key) { |
382 | case SR_CONF_SCAN_OPTIONS: | |
4f7fdcdd | 383 | case SR_CONF_DEVICE_OPTIONS: |
05199c0a | 384 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); |
4f7fdcdd | 385 | case SR_CONF_SAMPLERATE: |
53012da6 | 386 | *data = std_gvar_samplerates_steps(ARRAY_AND_SIZE(samplerates)); |
4f7fdcdd SA |
387 | break; |
388 | default: | |
389 | return SR_ERR_NA; | |
390 | } | |
391 | ||
a9010323 | 392 | return SR_OK; |
4f7fdcdd SA |
393 | } |
394 | ||
695dc859 | 395 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
4f7fdcdd SA |
396 | { |
397 | struct dev_context *devc; | |
398 | ||
4f7fdcdd SA |
399 | devc = sdi->priv; |
400 | ||
4f7fdcdd SA |
401 | if (!devc->ftdic) |
402 | return SR_ERR_BUG; | |
403 | ||
404 | ftdi_set_bitmode(devc->ftdic, 0, BITMODE_BITBANG); | |
405 | ||
4f7fdcdd SA |
406 | /* Properly reset internal variables before every new acquisition. */ |
407 | devc->samples_sent = 0; | |
408 | devc->bytes_received = 0; | |
409 | ||
bee2b016 | 410 | std_session_send_df_header(sdi); |
4f7fdcdd SA |
411 | |
412 | /* Hook up a dummy handler to receive data from the device. */ | |
413 | sr_session_source_add(sdi->session, -1, G_IO_IN, 0, | |
f2273382 | 414 | ftdi_la_receive_data, (void *)sdi); |
4f7fdcdd SA |
415 | |
416 | return SR_OK; | |
417 | } | |
418 | ||
695dc859 | 419 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
4f7fdcdd | 420 | { |
4f7fdcdd SA |
421 | sr_session_source_remove(sdi->session, -1); |
422 | ||
bee2b016 | 423 | std_session_send_df_end(sdi); |
4f7fdcdd SA |
424 | |
425 | return SR_OK; | |
426 | } | |
427 | ||
dd5c48a6 | 428 | static struct sr_dev_driver ftdi_la_driver_info = { |
f2273382 UH |
429 | .name = "ftdi-la", |
430 | .longname = "FTDI LA", | |
4f7fdcdd | 431 | .api_version = 1, |
c2fdcc25 | 432 | .init = std_init, |
700d6b64 | 433 | .cleanup = std_cleanup, |
4f7fdcdd | 434 | .scan = scan, |
c01bf34c | 435 | .dev_list = std_dev_list, |
4f7fdcdd SA |
436 | .dev_clear = dev_clear, |
437 | .config_get = config_get, | |
438 | .config_set = config_set, | |
439 | .config_list = config_list, | |
440 | .dev_open = dev_open, | |
441 | .dev_close = dev_close, | |
442 | .dev_acquisition_start = dev_acquisition_start, | |
443 | .dev_acquisition_stop = dev_acquisition_stop, | |
444 | .context = NULL, | |
445 | }; | |
dd5c48a6 | 446 | SR_REGISTER_DEV_DRIVER(ftdi_la_driver_info); |