]>
Commit | Line | Data |
---|---|---|
6239c175 UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <stdlib.h> | |
85b5af06 | 22 | #include <unistd.h> |
6239c175 UH |
23 | #include <string.h> |
24 | #include <sigrok.h> | |
25 | #include "config.h" | |
26 | ||
85b5af06 UH |
27 | #define BUFSIZE 4096 |
28 | ||
6239c175 UH |
29 | #define NUM_PROBES 8 |
30 | #define NUM_TRIGGER_STAGES 4 | |
31 | #define TRIGGER_TYPES "01" | |
32 | ||
33 | /* Software trigger implementation: positive values indicate trigger stage. */ | |
34 | #define TRIGGER_FIRED -1 | |
35 | ||
5096c6a6 UH |
36 | #define USB_MODEL_NAME "demodevice" |
37 | #define USB_VENDOR_NAME "demovendor" | |
38 | #define USB_MODEL_VERSION "1.0" | |
85b5af06 UH |
39 | |
40 | #define GENMODE_RANDOM 1 | |
41 | #define GENMODE_INC 2 | |
42 | ||
43 | static GThread *my_thread; | |
44 | static int thread_running; | |
45 | ||
6239c175 UH |
46 | static int capabilities[] = { |
47 | HWCAP_LOGIC_ANALYZER, | |
48 | HWCAP_SAMPLERATE, | |
49 | HWCAP_LIMIT_SAMPLES, | |
50 | }; | |
51 | ||
52 | /* Random selection of samplerates this "device" shall support. */ | |
53 | static uint64_t supported_samplerates[] = { | |
54 | KHZ(100), | |
55 | KHZ(500), | |
56 | MHZ(1), | |
57 | MHZ(2), | |
58 | MHZ(12), | |
59 | MHZ(24), | |
60 | 0, | |
61 | }; | |
62 | ||
63 | static struct samplerates samplerates = { | |
64 | KHZ(100), | |
65 | MHZ(24), | |
66 | 0, | |
67 | supported_samplerates, | |
68 | }; | |
69 | ||
85b5af06 UH |
70 | struct databag { |
71 | int pipe_fds[2]; | |
72 | uint8_t sample_generator; | |
73 | uint8_t thread_running; | |
74 | uint64_t samples_counter; | |
75 | int device_index; | |
76 | int loop_sleep; | |
77 | gpointer session_device_id; | |
78 | }; | |
79 | ||
80 | /* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */ | |
81 | static GSList *device_instances = NULL; | |
82 | ||
6239c175 UH |
83 | /* TODO: All of these should go in a device-specific struct. */ |
84 | static uint64_t cur_samplerate = 0; | |
85 | static uint64_t limit_samples = 0; | |
86 | // static uint8_t probe_mask = 0; | |
87 | // static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 }; | |
88 | // static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 }; | |
89 | // static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 }; | |
90 | ||
91 | // static int trigger_stage = TRIGGER_FIRED; | |
92 | ||
93 | static int hw_set_configuration(int device_index, int capability, void *value); | |
94 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); | |
95 | ||
6239c175 UH |
96 | static int hw_init(char *deviceinfo) |
97 | { | |
98 | /* Avoid compiler warning. */ | |
99 | deviceinfo = deviceinfo; | |
100 | ||
85b5af06 UH |
101 | struct sigrok_device_instance *sdi; |
102 | ||
103 | sdi = sigrok_device_instance_new(0, ST_ACTIVE, | |
104 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
105 | ||
106 | if (!sdi) | |
107 | return 0; | |
108 | device_instances = g_slist_append(device_instances, sdi); | |
109 | ||
110 | return 1; | |
6239c175 UH |
111 | } |
112 | ||
113 | static int hw_opendev(int device_index) | |
114 | { | |
115 | /* Avoid compiler warning. */ | |
116 | device_index = device_index; | |
117 | ||
118 | /* Nothing needed so far. */ | |
119 | return SIGROK_OK; | |
120 | } | |
121 | ||
122 | static void hw_closedev(int device_index) | |
123 | { | |
124 | /* Avoid compiler warning. */ | |
125 | device_index = device_index; | |
126 | ||
127 | /* Nothing needed so far. */ | |
128 | } | |
129 | ||
130 | static void hw_cleanup(void) | |
131 | { | |
132 | /* Nothing needed so far. */ | |
133 | } | |
134 | ||
135 | static void *hw_get_device_info(int device_index, int device_info_id) | |
136 | { | |
85b5af06 UH |
137 | struct sigrok_device_instance *sdi; |
138 | void *info = NULL; | |
139 | ||
140 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) | |
141 | return NULL; | |
142 | ||
6239c175 UH |
143 | switch (device_info_id) { |
144 | case DI_INSTANCE: | |
85b5af06 | 145 | info = sdi; |
6239c175 UH |
146 | break; |
147 | case DI_NUM_PROBES: | |
148 | info = GINT_TO_POINTER(NUM_PROBES); | |
149 | break; | |
150 | case DI_SAMPLERATES: | |
151 | info = &samplerates; | |
152 | break; | |
153 | case DI_TRIGGER_TYPES: | |
154 | info = TRIGGER_TYPES; | |
155 | break; | |
156 | case DI_CUR_SAMPLERATE: | |
157 | info = &cur_samplerate; | |
158 | break; | |
159 | } | |
160 | ||
161 | return info; | |
162 | } | |
163 | ||
164 | static int hw_get_status(int device_index) | |
165 | { | |
166 | /* Avoid compiler warning. */ | |
167 | device_index = device_index; | |
5096c6a6 | 168 | |
6239c175 UH |
169 | return 0; /* FIXME */ |
170 | } | |
171 | ||
172 | static int *hw_get_capabilities(void) | |
173 | { | |
174 | return capabilities; | |
175 | } | |
176 | ||
177 | static int hw_set_configuration(int device_index, int capability, void *value) | |
178 | { | |
179 | int ret; | |
85b5af06 | 180 | uint64_t *tmp_u64; |
6239c175 UH |
181 | |
182 | /* Avoid compiler warning. */ | |
183 | device_index = device_index; | |
184 | ||
185 | if (capability == HWCAP_SAMPLERATE) { | |
85b5af06 | 186 | cur_samplerate = *(uint64_t *) value; |
6239c175 UH |
187 | ret = SIGROK_OK; |
188 | } else if (capability == HWCAP_PROBECONFIG) { | |
85b5af06 UH |
189 | // ret = configure_probes((GSList *) value); FIXME |
190 | ret = SIGROK_OK; | |
6239c175 | 191 | } else if (capability == HWCAP_LIMIT_SAMPLES) { |
85b5af06 UH |
192 | tmp_u64 = value; |
193 | limit_samples = *tmp_u64; | |
6239c175 UH |
194 | ret = SIGROK_OK; |
195 | } else { | |
196 | ret = SIGROK_ERR; | |
197 | } | |
198 | ||
199 | return ret; | |
200 | } | |
201 | ||
5096c6a6 | 202 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 UH |
203 | { |
204 | struct databag *mydata = data; | |
205 | uint64_t i; | |
85b5af06 | 206 | |
5096c6a6 | 207 | memset(buf, 0, size); |
85b5af06 UH |
208 | |
209 | switch (mydata->sample_generator) { | |
210 | case GENMODE_RANDOM: /* Random */ | |
5096c6a6 UH |
211 | for (i = 0; i < size; i++) |
212 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 UH |
213 | break; |
214 | case GENMODE_INC: /* Simple increment */ | |
5096c6a6 | 215 | for (i = 0; i < size; i++) |
85b5af06 UH |
216 | *(buf + i) = i; |
217 | break; | |
218 | } | |
219 | } | |
220 | ||
221 | /* Thread function */ | |
222 | static void thread_func(void *data) | |
223 | { | |
224 | struct databag *mydata = data; | |
225 | uint8_t buf[BUFSIZE]; | |
226 | uint64_t nb_to_send = 0; | |
227 | ||
228 | while (thread_running) { | |
229 | nb_to_send = limit_samples - mydata->samples_counter; | |
230 | ||
231 | if (nb_to_send == 0) { | |
232 | close(mydata->pipe_fds[1]); | |
233 | thread_running = 0; | |
234 | hw_stop_acquisition(mydata->device_index, | |
235 | mydata->session_device_id); | |
236 | } else if (nb_to_send > BUFSIZE) { | |
237 | nb_to_send = BUFSIZE; | |
238 | } | |
239 | ||
240 | samples_generator(buf, nb_to_send, data); | |
241 | mydata->samples_counter += nb_to_send; | |
242 | ||
243 | write(mydata->pipe_fds[1], &buf, nb_to_send); | |
244 | g_usleep(mydata->loop_sleep); | |
245 | } | |
246 | } | |
247 | ||
248 | /* Callback handling data */ | |
249 | static int receive_data(int fd, int revents, void *user_data) | |
250 | { | |
251 | struct datafeed_packet packet; | |
252 | /* uint16_t samples[1000]; */ | |
253 | char c[BUFSIZE]; | |
254 | uint64_t z; | |
255 | ||
256 | /* Avoid compiler warnings. */ | |
257 | revents = revents; | |
258 | ||
259 | z = read(fd, &c, BUFSIZE); | |
260 | if (z > 0) { | |
4c046c6b | 261 | packet.type = DF_LOGIC; |
85b5af06 | 262 | packet.length = z; |
4c046c6b | 263 | packet.unitsize = 1; |
85b5af06 UH |
264 | packet.payload = c; |
265 | session_bus(user_data, &packet); | |
266 | } | |
267 | return TRUE; | |
268 | } | |
269 | ||
6239c175 UH |
270 | static int hw_start_acquisition(int device_index, gpointer session_device_id) |
271 | { | |
272 | struct datafeed_packet *packet; | |
273 | struct datafeed_header *header; | |
274 | unsigned char *buf; | |
85b5af06 | 275 | struct databag *mydata; |
6239c175 | 276 | |
85b5af06 | 277 | mydata = malloc(sizeof(struct databag)); |
5096c6a6 UH |
278 | if (!mydata) |
279 | return SIGROK_ERR_MALLOC; | |
85b5af06 UH |
280 | |
281 | mydata->sample_generator = GENMODE_RANDOM; | |
282 | mydata->session_device_id = session_device_id; | |
283 | mydata->device_index = device_index; | |
284 | mydata->samples_counter = 0; | |
285 | mydata->loop_sleep = 100000; | |
286 | ||
287 | if (pipe(mydata->pipe_fds)) { | |
288 | fprintf(stderr, "Pipe failed.\n"); | |
289 | return SIGROK_ERR_MALLOC; /* FIXME */ | |
290 | ||
291 | } | |
292 | source_add(mydata->pipe_fds[0], G_IO_IN | G_IO_ERR, 40, receive_data, | |
293 | session_device_id); | |
294 | ||
295 | /* Run the demo thread. */ | |
296 | g_thread_init(NULL); | |
297 | thread_running = 1; | |
298 | my_thread = | |
299 | g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL); | |
300 | if (!my_thread) { | |
301 | fprintf(stderr, "demo: Thread creation failed.\n"); | |
302 | return SIGROK_ERR_MALLOC; /* FIXME */ | |
303 | } | |
6239c175 UH |
304 | |
305 | packet = malloc(sizeof(struct datafeed_packet)); | |
306 | header = malloc(sizeof(struct datafeed_header)); | |
307 | buf = malloc(2048); | |
308 | if (!packet || !header || !buf) | |
309 | return SIGROK_ERR_MALLOC; | |
310 | ||
311 | /* FIXME */ | |
312 | memset(buf, 0x55, 2048); | |
313 | ||
314 | packet->type = DF_HEADER; | |
315 | packet->length = sizeof(struct datafeed_header); | |
316 | packet->payload = (unsigned char *)header; | |
317 | header->feed_version = 1; | |
318 | gettimeofday(&header->starttime, NULL); | |
319 | header->samplerate = cur_samplerate; | |
320 | header->protocol_id = PROTO_RAW; | |
321 | header->num_probes = NUM_PROBES; | |
322 | session_bus(session_device_id, packet); | |
323 | free(header); | |
324 | free(packet); | |
325 | ||
326 | return SIGROK_OK; | |
327 | } | |
328 | ||
6239c175 UH |
329 | /* This stops acquisition on ALL devices, ignoring device_index. */ |
330 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) | |
331 | { | |
332 | struct datafeed_packet packet; | |
333 | ||
334 | /* QUICK HACK */ | |
335 | device_index = device_index; | |
336 | ||
85b5af06 | 337 | /* Send last packet. */ |
6239c175 UH |
338 | packet.type = DF_END; |
339 | session_bus(session_device_id, &packet); | |
6239c175 UH |
340 | } |
341 | ||
342 | struct device_plugin demo_plugin_info = { | |
343 | "demo", | |
344 | 1, | |
345 | hw_init, | |
346 | hw_cleanup, | |
347 | hw_opendev, | |
348 | hw_closedev, | |
349 | hw_get_device_info, | |
350 | hw_get_status, | |
351 | hw_get_capabilities, | |
352 | hw_set_configuration, | |
353 | hw_start_acquisition, | |
354 | hw_stop_acquisition, | |
355 | }; |