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6239c175 UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
fc96e6f8 | 5 | * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com> |
6239c175 UH |
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 2 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, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <stdlib.h> | |
85b5af06 | 23 | #include <unistd.h> |
6239c175 UH |
24 | #include <string.h> |
25 | #include <sigrok.h> | |
26 | #include "config.h" | |
27 | ||
85b5af06 UH |
28 | #define BUFSIZE 4096 |
29 | ||
6239c175 UH |
30 | #define NUM_PROBES 8 |
31 | #define NUM_TRIGGER_STAGES 4 | |
32 | #define TRIGGER_TYPES "01" | |
33 | ||
34 | /* Software trigger implementation: positive values indicate trigger stage. */ | |
35 | #define TRIGGER_FIRED -1 | |
36 | ||
5096c6a6 UH |
37 | #define USB_MODEL_NAME "demodevice" |
38 | #define USB_VENDOR_NAME "demovendor" | |
39 | #define USB_MODEL_VERSION "1.0" | |
85b5af06 UH |
40 | |
41 | #define GENMODE_RANDOM 1 | |
42 | #define GENMODE_INC 2 | |
43 | ||
44 | static GThread *my_thread; | |
45 | static int thread_running; | |
46 | ||
6239c175 UH |
47 | static int capabilities[] = { |
48 | HWCAP_LOGIC_ANALYZER, | |
49 | HWCAP_SAMPLERATE, | |
50 | HWCAP_LIMIT_SAMPLES, | |
51 | }; | |
52 | ||
53 | /* Random selection of samplerates this "device" shall support. */ | |
54 | static uint64_t supported_samplerates[] = { | |
55 | KHZ(100), | |
56 | KHZ(500), | |
57 | MHZ(1), | |
58 | MHZ(2), | |
59 | MHZ(12), | |
60 | MHZ(24), | |
61 | 0, | |
62 | }; | |
63 | ||
64 | static struct samplerates samplerates = { | |
65 | KHZ(100), | |
66 | MHZ(24), | |
67 | 0, | |
68 | supported_samplerates, | |
69 | }; | |
70 | ||
85b5af06 UH |
71 | struct databag { |
72 | int pipe_fds[2]; | |
73 | uint8_t sample_generator; | |
74 | uint8_t thread_running; | |
75 | uint64_t samples_counter; | |
76 | int device_index; | |
77 | int loop_sleep; | |
78 | gpointer session_device_id; | |
79 | }; | |
80 | ||
81 | /* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */ | |
82 | static GSList *device_instances = NULL; | |
83 | ||
6239c175 UH |
84 | /* TODO: All of these should go in a device-specific struct. */ |
85 | static uint64_t cur_samplerate = 0; | |
86 | static uint64_t limit_samples = 0; | |
87 | // static uint8_t probe_mask = 0; | |
88 | // static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 }; | |
89 | // static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 }; | |
90 | // static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 }; | |
91 | ||
92 | // static int trigger_stage = TRIGGER_FIRED; | |
93 | ||
94 | static int hw_set_configuration(int device_index, int capability, void *value); | |
95 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); | |
96 | ||
6239c175 UH |
97 | static int hw_init(char *deviceinfo) |
98 | { | |
99 | /* Avoid compiler warning. */ | |
100 | deviceinfo = deviceinfo; | |
101 | ||
85b5af06 UH |
102 | struct sigrok_device_instance *sdi; |
103 | ||
104 | sdi = sigrok_device_instance_new(0, ST_ACTIVE, | |
105 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
106 | ||
107 | if (!sdi) | |
108 | return 0; | |
109 | device_instances = g_slist_append(device_instances, sdi); | |
110 | ||
111 | return 1; | |
6239c175 UH |
112 | } |
113 | ||
114 | static int hw_opendev(int device_index) | |
115 | { | |
116 | /* Avoid compiler warning. */ | |
117 | device_index = device_index; | |
118 | ||
119 | /* Nothing needed so far. */ | |
120 | return SIGROK_OK; | |
121 | } | |
122 | ||
123 | static void hw_closedev(int device_index) | |
124 | { | |
125 | /* Avoid compiler warning. */ | |
126 | device_index = device_index; | |
127 | ||
128 | /* Nothing needed so far. */ | |
129 | } | |
130 | ||
131 | static void hw_cleanup(void) | |
132 | { | |
133 | /* Nothing needed so far. */ | |
134 | } | |
135 | ||
136 | static void *hw_get_device_info(int device_index, int device_info_id) | |
137 | { | |
85b5af06 UH |
138 | struct sigrok_device_instance *sdi; |
139 | void *info = NULL; | |
140 | ||
141 | if (!(sdi = get_sigrok_device_instance(device_instances, device_index))) | |
142 | return NULL; | |
143 | ||
6239c175 UH |
144 | switch (device_info_id) { |
145 | case DI_INSTANCE: | |
85b5af06 | 146 | info = sdi; |
6239c175 UH |
147 | break; |
148 | case DI_NUM_PROBES: | |
149 | info = GINT_TO_POINTER(NUM_PROBES); | |
150 | break; | |
151 | case DI_SAMPLERATES: | |
152 | info = &samplerates; | |
153 | break; | |
154 | case DI_TRIGGER_TYPES: | |
155 | info = TRIGGER_TYPES; | |
156 | break; | |
157 | case DI_CUR_SAMPLERATE: | |
158 | info = &cur_samplerate; | |
159 | break; | |
160 | } | |
161 | ||
162 | return info; | |
163 | } | |
164 | ||
165 | static int hw_get_status(int device_index) | |
166 | { | |
167 | /* Avoid compiler warning. */ | |
168 | device_index = device_index; | |
5096c6a6 | 169 | |
6239c175 UH |
170 | return 0; /* FIXME */ |
171 | } | |
172 | ||
173 | static int *hw_get_capabilities(void) | |
174 | { | |
175 | return capabilities; | |
176 | } | |
177 | ||
178 | static int hw_set_configuration(int device_index, int capability, void *value) | |
179 | { | |
180 | int ret; | |
85b5af06 | 181 | uint64_t *tmp_u64; |
6239c175 UH |
182 | |
183 | /* Avoid compiler warning. */ | |
184 | device_index = device_index; | |
185 | ||
186 | if (capability == HWCAP_SAMPLERATE) { | |
85b5af06 | 187 | cur_samplerate = *(uint64_t *) value; |
6239c175 UH |
188 | ret = SIGROK_OK; |
189 | } else if (capability == HWCAP_PROBECONFIG) { | |
85b5af06 UH |
190 | // ret = configure_probes((GSList *) value); FIXME |
191 | ret = SIGROK_OK; | |
6239c175 | 192 | } else if (capability == HWCAP_LIMIT_SAMPLES) { |
85b5af06 UH |
193 | tmp_u64 = value; |
194 | limit_samples = *tmp_u64; | |
6239c175 UH |
195 | ret = SIGROK_OK; |
196 | } else { | |
197 | ret = SIGROK_ERR; | |
198 | } | |
199 | ||
200 | return ret; | |
201 | } | |
202 | ||
5096c6a6 | 203 | static void samples_generator(uint8_t *buf, uint64_t size, void *data) |
85b5af06 UH |
204 | { |
205 | struct databag *mydata = data; | |
206 | uint64_t i; | |
85b5af06 | 207 | |
5096c6a6 | 208 | memset(buf, 0, size); |
85b5af06 UH |
209 | |
210 | switch (mydata->sample_generator) { | |
211 | case GENMODE_RANDOM: /* Random */ | |
5096c6a6 UH |
212 | for (i = 0; i < size; i++) |
213 | *(buf + i) = (uint8_t)(rand() & 0xff); | |
85b5af06 UH |
214 | break; |
215 | case GENMODE_INC: /* Simple increment */ | |
5096c6a6 | 216 | for (i = 0; i < size; i++) |
85b5af06 UH |
217 | *(buf + i) = i; |
218 | break; | |
219 | } | |
220 | } | |
221 | ||
222 | /* Thread function */ | |
223 | static void thread_func(void *data) | |
224 | { | |
225 | struct databag *mydata = data; | |
226 | uint8_t buf[BUFSIZE]; | |
227 | uint64_t nb_to_send = 0; | |
228 | ||
229 | while (thread_running) { | |
230 | nb_to_send = limit_samples - mydata->samples_counter; | |
231 | ||
232 | if (nb_to_send == 0) { | |
233 | close(mydata->pipe_fds[1]); | |
234 | thread_running = 0; | |
235 | hw_stop_acquisition(mydata->device_index, | |
236 | mydata->session_device_id); | |
237 | } else if (nb_to_send > BUFSIZE) { | |
238 | nb_to_send = BUFSIZE; | |
239 | } | |
240 | ||
241 | samples_generator(buf, nb_to_send, data); | |
242 | mydata->samples_counter += nb_to_send; | |
243 | ||
244 | write(mydata->pipe_fds[1], &buf, nb_to_send); | |
245 | g_usleep(mydata->loop_sleep); | |
246 | } | |
247 | } | |
248 | ||
249 | /* Callback handling data */ | |
250 | static int receive_data(int fd, int revents, void *user_data) | |
251 | { | |
252 | struct datafeed_packet packet; | |
253 | /* uint16_t samples[1000]; */ | |
254 | char c[BUFSIZE]; | |
255 | uint64_t z; | |
256 | ||
257 | /* Avoid compiler warnings. */ | |
258 | revents = revents; | |
259 | ||
260 | z = read(fd, &c, BUFSIZE); | |
261 | if (z > 0) { | |
4c046c6b | 262 | packet.type = DF_LOGIC; |
85b5af06 | 263 | packet.length = z; |
4c046c6b | 264 | packet.unitsize = 1; |
85b5af06 UH |
265 | packet.payload = c; |
266 | session_bus(user_data, &packet); | |
267 | } | |
268 | return TRUE; | |
269 | } | |
270 | ||
6239c175 UH |
271 | static int hw_start_acquisition(int device_index, gpointer session_device_id) |
272 | { | |
273 | struct datafeed_packet *packet; | |
274 | struct datafeed_header *header; | |
275 | unsigned char *buf; | |
85b5af06 | 276 | struct databag *mydata; |
6239c175 | 277 | |
85b5af06 | 278 | mydata = malloc(sizeof(struct databag)); |
5096c6a6 UH |
279 | if (!mydata) |
280 | return SIGROK_ERR_MALLOC; | |
85b5af06 UH |
281 | |
282 | mydata->sample_generator = GENMODE_RANDOM; | |
283 | mydata->session_device_id = session_device_id; | |
284 | mydata->device_index = device_index; | |
285 | mydata->samples_counter = 0; | |
286 | mydata->loop_sleep = 100000; | |
287 | ||
288 | if (pipe(mydata->pipe_fds)) { | |
289 | fprintf(stderr, "Pipe failed.\n"); | |
290 | return SIGROK_ERR_MALLOC; /* FIXME */ | |
291 | ||
292 | } | |
293 | source_add(mydata->pipe_fds[0], G_IO_IN | G_IO_ERR, 40, receive_data, | |
294 | session_device_id); | |
295 | ||
296 | /* Run the demo thread. */ | |
297 | g_thread_init(NULL); | |
298 | thread_running = 1; | |
299 | my_thread = | |
300 | g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL); | |
301 | if (!my_thread) { | |
302 | fprintf(stderr, "demo: Thread creation failed.\n"); | |
303 | return SIGROK_ERR_MALLOC; /* FIXME */ | |
304 | } | |
6239c175 UH |
305 | |
306 | packet = malloc(sizeof(struct datafeed_packet)); | |
307 | header = malloc(sizeof(struct datafeed_header)); | |
308 | buf = malloc(2048); | |
309 | if (!packet || !header || !buf) | |
310 | return SIGROK_ERR_MALLOC; | |
311 | ||
312 | /* FIXME */ | |
313 | memset(buf, 0x55, 2048); | |
314 | ||
315 | packet->type = DF_HEADER; | |
316 | packet->length = sizeof(struct datafeed_header); | |
317 | packet->payload = (unsigned char *)header; | |
318 | header->feed_version = 1; | |
319 | gettimeofday(&header->starttime, NULL); | |
320 | header->samplerate = cur_samplerate; | |
321 | header->protocol_id = PROTO_RAW; | |
c2616fb9 DR |
322 | header->num_logic_probes = NUM_PROBES; |
323 | header->num_analog_probes = 0; | |
6239c175 UH |
324 | session_bus(session_device_id, packet); |
325 | free(header); | |
326 | free(packet); | |
327 | ||
328 | return SIGROK_OK; | |
329 | } | |
330 | ||
6239c175 UH |
331 | /* This stops acquisition on ALL devices, ignoring device_index. */ |
332 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) | |
333 | { | |
334 | struct datafeed_packet packet; | |
335 | ||
336 | /* QUICK HACK */ | |
337 | device_index = device_index; | |
338 | ||
85b5af06 | 339 | /* Send last packet. */ |
6239c175 UH |
340 | packet.type = DF_END; |
341 | session_bus(session_device_id, &packet); | |
6239c175 UH |
342 | } |
343 | ||
344 | struct device_plugin demo_plugin_info = { | |
345 | "demo", | |
346 | 1, | |
347 | hw_init, | |
348 | hw_cleanup, | |
349 | hw_opendev, | |
350 | hw_closedev, | |
351 | hw_get_device_info, | |
352 | hw_get_status, | |
353 | hw_get_capabilities, | |
354 | hw_set_configuration, | |
355 | hw_start_acquisition, | |
356 | hw_stop_acquisition, | |
357 | }; |