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f2cd2deb FS |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de> | |
5 | * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se> | |
6 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
7 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
8 | * | |
9 | * This program is free software: you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation, either version 3 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | */ | |
22 | ||
23 | #include <config.h> | |
a7740b06 | 24 | |
f2cd2deb | 25 | #include <libsigrok/libsigrok.h> |
a7740b06 GS |
26 | #include <string.h> |
27 | ||
f2cd2deb FS |
28 | #include "libsigrok-internal.h" |
29 | #include "protocol.h" | |
30 | ||
f2cd2deb | 31 | #define UC_FIRMWARE "kingst-la-%04x.fw" |
9de389b1 KG |
32 | #define FPGA_FW_LA2016 "kingst-la2016-fpga.bitstream" |
33 | #define FPGA_FW_LA2016A "kingst-la2016a1-fpga.bitstream" | |
8b172e78 KG |
34 | #define FPGA_FW_LA1016 "kingst-la1016-fpga.bitstream" |
35 | #define FPGA_FW_LA1016A "kingst-la1016a1-fpga.bitstream" | |
f2cd2deb | 36 | |
8b172e78 KG |
37 | #define MAX_SAMPLE_RATE_LA2016 SR_MHZ(200) |
38 | #define MAX_SAMPLE_RATE_LA1016 SR_MHZ(100) | |
e9430410 GS |
39 | #define MAX_SAMPLE_DEPTH 10e9 |
40 | #define MAX_PWM_FREQ SR_MHZ(20) | |
41 | #define PWM_CLOCK SR_MHZ(200) /* 200MHz for both LA2016 and LA1016 */ | |
f2cd2deb | 42 | |
96dc954e | 43 | /* USB vendor class control requests, executed by the Cypress FX2 MCU. */ |
84fe94bd | 44 | #define CMD_FPGA_ENABLE 0x10 |
96dc954e GS |
45 | #define CMD_FPGA_SPI 0x20 /* R/W access to FPGA registers via SPI. */ |
46 | #define CMD_BULK_START 0x30 /* Start sample data download via USB EP6 IN. */ | |
47 | #define CMD_BULK_RESET 0x38 /* Flush FIFO of FX2 USB EP6 IN. */ | |
48 | #define CMD_FPGA_INIT 0x50 /* Used before and after FPGA bitstream upload. */ | |
49 | #define CMD_KAUTH 0x60 /* Communicate to auth IC (U10). Not used. */ | |
50 | #define CMD_EEPROM 0xa2 /* R/W access to EEPROM content. */ | |
00849545 | 51 | |
42f6dd55 | 52 | /* |
96dc954e GS |
53 | * FPGA register addresses (base addresses when registers span multiple |
54 | * bytes, in that case data is kept in little endian format). Passed to | |
55 | * CMD_FPGA_SPI requests. The FX2 MCU transparently handles the detail | |
56 | * of SPI transfers encoding the read (1) or write (0) direction in the | |
57 | * MSB of the address field. There are some 60 byte-wide FPGA registers. | |
42f6dd55 | 58 | */ |
96dc954e GS |
59 | #define REG_RUN 0x00 /* Read capture status, write start capture. */ |
60 | #define REG_PWM_EN 0x02 /* User PWM channels on/off. */ | |
61 | #define REG_CAPT_MODE 0x03 /* Write 0x00 capture to SDRAM, 0x01 streaming. */ | |
62 | #define REG_BULK 0x08 /* Write start addr, byte count to download samples. */ | |
63 | #define REG_SAMPLING 0x10 /* Write capture config, read capture SDRAM location. */ | |
64 | #define REG_TRIGGER 0x20 /* write level and edge trigger config. */ | |
65 | #define REG_THRESHOLD 0x68 /* Write PWM config to setup input threshold DAC. */ | |
66 | #define REG_PWM1 0x70 /* Write config for user PWM1. */ | |
67 | #define REG_PWM2 0x78 /* Write config for user PWM2. */ | |
f2cd2deb FS |
68 | |
69 | static int ctrl_in(const struct sr_dev_inst *sdi, | |
70 | uint8_t bRequest, uint16_t wValue, uint16_t wIndex, | |
71 | void *data, uint16_t wLength) | |
72 | { | |
73 | struct sr_usb_dev_inst *usb; | |
74 | int ret; | |
75 | ||
76 | usb = sdi->conn; | |
77 | ||
78 | if ((ret = libusb_control_transfer( | |
79 | usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, | |
80 | bRequest, wValue, wIndex, (unsigned char *)data, wLength, | |
81 | DEFAULT_TIMEOUT_MS)) != wLength) { | |
91f73872 GS |
82 | sr_dbg("USB ctrl in: %d bytes, req %d val %#x idx %d: %s.", |
83 | wLength, bRequest, wValue, wIndex, | |
84 | libusb_error_name(ret)); | |
85 | sr_err("Cannot read %d bytes from USB: %s.", | |
86 | wLength, libusb_error_name(ret)); | |
f2cd2deb FS |
87 | return SR_ERR; |
88 | } | |
89 | ||
90 | return SR_OK; | |
91 | } | |
92 | ||
93 | static int ctrl_out(const struct sr_dev_inst *sdi, | |
94 | uint8_t bRequest, uint16_t wValue, uint16_t wIndex, | |
95 | void *data, uint16_t wLength) | |
96 | { | |
97 | struct sr_usb_dev_inst *usb; | |
98 | int ret; | |
99 | ||
100 | usb = sdi->conn; | |
101 | ||
102 | if ((ret = libusb_control_transfer( | |
103 | usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, | |
104 | bRequest, wValue, wIndex, (unsigned char*)data, wLength, | |
105 | DEFAULT_TIMEOUT_MS)) != wLength) { | |
91f73872 GS |
106 | sr_dbg("USB ctrl out: %d bytes, req %d val %#x idx %d: %s.", |
107 | wLength, bRequest, wValue, wIndex, | |
108 | libusb_error_name(ret)); | |
109 | sr_err("Cannot write %d bytes to USB: %s.", | |
110 | wLength, libusb_error_name(ret)); | |
f2cd2deb FS |
111 | return SR_ERR; |
112 | } | |
113 | ||
114 | return SR_OK; | |
115 | } | |
116 | ||
9de389b1 | 117 | static int upload_fpga_bitstream(const struct sr_dev_inst *sdi, const char *bitstream_fname) |
f2cd2deb | 118 | { |
3f48ab02 | 119 | struct dev_context *devc; |
f2cd2deb FS |
120 | struct drv_context *drvc; |
121 | struct sr_usb_dev_inst *usb; | |
122 | struct sr_resource bitstream; | |
c3d40037 HK |
123 | uint8_t buffer[sizeof(uint32_t)]; |
124 | uint8_t *wrptr; | |
f2cd2deb FS |
125 | uint8_t cmd_resp; |
126 | uint8_t block[4096]; | |
3f48ab02 FS |
127 | int len, act_len; |
128 | unsigned int pos; | |
f2cd2deb | 129 | int ret; |
3f48ab02 | 130 | unsigned int zero_pad_to = 0x2c000; |
f2cd2deb | 131 | |
3f48ab02 | 132 | devc = sdi->priv; |
f2cd2deb FS |
133 | drvc = sdi->driver->context; |
134 | usb = sdi->conn; | |
135 | ||
9de389b1 | 136 | sr_info("Uploading FPGA bitstream '%s'.", bitstream_fname); |
f2cd2deb | 137 | |
9de389b1 | 138 | ret = sr_resource_open(drvc->sr_ctx, &bitstream, SR_RESOURCE_FIRMWARE, bitstream_fname); |
f2cd2deb | 139 | if (ret != SR_OK) { |
91f73872 | 140 | sr_err("Cannot find FPGA bitstream %s.", bitstream_fname); |
f2cd2deb FS |
141 | return ret; |
142 | } | |
143 | ||
3f48ab02 | 144 | devc->bitstream_size = (uint32_t)bitstream.size; |
c3d40037 HK |
145 | wrptr = buffer; |
146 | write_u32le_inc(&wrptr, devc->bitstream_size); | |
00849545 | 147 | if ((ret = ctrl_out(sdi, CMD_FPGA_INIT, 0x00, 0, buffer, wrptr - buffer)) != SR_OK) { |
91f73872 | 148 | sr_err("Cannot initiate FPGA bitstream upload."); |
f2cd2deb FS |
149 | sr_resource_close(drvc->sr_ctx, &bitstream); |
150 | return ret; | |
151 | } | |
152 | ||
153 | pos = 0; | |
154 | while (1) { | |
3f48ab02 FS |
155 | if (pos < bitstream.size) { |
156 | len = (int)sr_resource_read(drvc->sr_ctx, &bitstream, &block, sizeof(block)); | |
157 | if (len < 0) { | |
91f73872 | 158 | sr_err("Cannot read FPGA bitstream."); |
3f48ab02 FS |
159 | sr_resource_close(drvc->sr_ctx, &bitstream); |
160 | return SR_ERR; | |
161 | } | |
162 | } else { | |
96dc954e | 163 | /* Zero-pad until 'zero_pad_to'. */ |
3f48ab02 FS |
164 | len = zero_pad_to - pos; |
165 | if ((unsigned)len > sizeof(block)) | |
166 | len = sizeof(block); | |
167 | memset(&block, 0, len); | |
f2cd2deb FS |
168 | } |
169 | if (len == 0) | |
170 | break; | |
171 | ||
172 | ret = libusb_bulk_transfer(usb->devhdl, 2, (unsigned char*)&block[0], len, &act_len, DEFAULT_TIMEOUT_MS); | |
173 | if (ret != 0) { | |
91f73872 GS |
174 | sr_dbg("Cannot write FPGA bitstream, block %#x len %d: %s.", |
175 | pos, (int)len, libusb_error_name(ret)); | |
f2cd2deb FS |
176 | ret = SR_ERR; |
177 | break; | |
178 | } | |
179 | if (act_len != len) { | |
91f73872 GS |
180 | sr_dbg("Short write for FPGA bitstream, block %#x len %d: got %d.", |
181 | pos, (int)len, act_len); | |
f2cd2deb FS |
182 | ret = SR_ERR; |
183 | break; | |
184 | } | |
185 | pos += len; | |
186 | } | |
187 | sr_resource_close(drvc->sr_ctx, &bitstream); | |
188 | if (ret != 0) | |
189 | return ret; | |
91f73872 GS |
190 | sr_info("FPGA bitstream upload (%" PRIu64 " bytes) done.", |
191 | bitstream.size); | |
f2cd2deb | 192 | |
00849545 | 193 | if ((ret = ctrl_in(sdi, CMD_FPGA_INIT, 0x00, 0, &cmd_resp, sizeof(cmd_resp))) != SR_OK) { |
91f73872 | 194 | sr_err("Cannot read response after FPGA bitstream upload."); |
f2cd2deb FS |
195 | return ret; |
196 | } | |
3f48ab02 | 197 | if (cmd_resp != 0) { |
91f73872 GS |
198 | sr_err("Unexpected FPGA bitstream upload response, got 0x%02x, want 0.", |
199 | cmd_resp); | |
3f48ab02 FS |
200 | return SR_ERR; |
201 | } | |
202 | ||
203 | g_usleep(30000); | |
f2cd2deb | 204 | |
00849545 | 205 | if ((ret = ctrl_out(sdi, CMD_FPGA_ENABLE, 0x01, 0, NULL, 0)) != SR_OK) { |
91f73872 | 206 | sr_err("Cannot enable FPGA after bitstream upload."); |
f2cd2deb FS |
207 | return ret; |
208 | } | |
209 | ||
3f48ab02 | 210 | g_usleep(40000); |
f2cd2deb FS |
211 | return SR_OK; |
212 | } | |
213 | ||
214 | static int set_threshold_voltage(const struct sr_dev_inst *sdi, float voltage) | |
215 | { | |
216 | struct dev_context *devc; | |
f2cd2deb FS |
217 | int ret; |
218 | ||
219 | devc = sdi->priv; | |
f2cd2deb | 220 | |
f2ad79d1 KG |
221 | uint16_t duty_R79,duty_R56; |
222 | uint8_t buf[2 * sizeof(uint16_t)]; | |
223 | uint8_t *wrptr; | |
224 | ||
96dc954e | 225 | /* Clamp threshold setting to valid range for LA2016. */ |
f2ad79d1 KG |
226 | if (voltage > 4.0) { |
227 | voltage = 4.0; | |
228 | } | |
229 | else if (voltage < -4.0) { | |
230 | voltage = -4.0; | |
231 | } | |
232 | ||
233 | /* | |
96dc954e GS |
234 | * Two PWM output channels feed one DAC which generates a bias |
235 | * voltage, which offsets the input probe's voltage level, and | |
236 | * in combination with the FPGA pins' fixed threshold result in | |
237 | * a programmable input threshold from the user's perspective. | |
238 | * The PWM outputs can be seen on R79 and R56 respectively, the | |
239 | * frequency is 100kHz and the duty cycle varies. The R79 PWM | |
240 | * uses three discrete settings. The R56 PWM varies with desired | |
241 | * thresholds and depends on the R79 PWM configuration. See the | |
242 | * schematics comments which discuss the formulae. | |
f2ad79d1 KG |
243 | */ |
244 | if (voltage >= 2.9) { | |
96dc954e | 245 | duty_R79 = 0; /* PWM off (0V). */ |
f2ad79d1 KG |
246 | duty_R56 = (uint16_t)(302 * voltage - 363); |
247 | } | |
248 | else if (voltage <= -0.4) { | |
96dc954e | 249 | duty_R79 = 0x02d7; /* 72% duty cycle. */ |
f2ad79d1 KG |
250 | duty_R56 = (uint16_t)(302 * voltage + 1090); |
251 | } | |
252 | else { | |
96dc954e | 253 | duty_R79 = 0x00f2; /* 25% duty cycle. */ |
f2ad79d1 KG |
254 | duty_R56 = (uint16_t)(302 * voltage + 121); |
255 | } | |
256 | ||
96dc954e | 257 | /* Clamp duty register values to sensible limits. */ |
f2ad79d1 KG |
258 | if (duty_R56 < 10) { |
259 | duty_R56 = 10; | |
260 | } | |
261 | else if (duty_R56 > 1100) { | |
262 | duty_R56 = 1100; | |
263 | } | |
264 | ||
91f73872 GS |
265 | sr_dbg("Set threshold voltage %.2fV.", voltage); |
266 | sr_dbg("Duty cycle values: R56 0x%04x, R79 0x%04x.", duty_R56, duty_R79); | |
f2ad79d1 KG |
267 | |
268 | wrptr = buf; | |
269 | write_u16le_inc(&wrptr, duty_R56); | |
270 | write_u16le_inc(&wrptr, duty_R79); | |
271 | ||
272 | ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_THRESHOLD, 0, buf, wrptr - buf); | |
f2cd2deb | 273 | if (ret != SR_OK) { |
91f73872 | 274 | sr_err("Cannot set threshold voltage %.2fV.", voltage); |
f2cd2deb FS |
275 | return ret; |
276 | } | |
277 | devc->threshold_voltage = voltage; | |
278 | ||
279 | return SR_OK; | |
280 | } | |
281 | ||
282 | static int enable_pwm(const struct sr_dev_inst *sdi, uint8_t p1, uint8_t p2) | |
283 | { | |
284 | struct dev_context *devc; | |
285 | uint8_t cfg; | |
286 | int ret; | |
287 | ||
288 | devc = sdi->priv; | |
289 | cfg = 0; | |
290 | ||
291 | if (p1) cfg |= 1 << 0; | |
292 | if (p2) cfg |= 1 << 1; | |
293 | ||
91f73872 | 294 | sr_dbg("Set PWM enable %d %d. Config 0x%02x.", p1, p2, cfg); |
42f6dd55 | 295 | ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_PWM_EN, 0, &cfg, sizeof(cfg)); |
f2cd2deb | 296 | if (ret != SR_OK) { |
91f73872 | 297 | sr_err("Cannot setup PWM enabled state."); |
f2cd2deb FS |
298 | return ret; |
299 | } | |
300 | devc->pwm_setting[0].enabled = (p1) ? 1 : 0; | |
301 | devc->pwm_setting[1].enabled = (p2) ? 1 : 0; | |
302 | ||
303 | return SR_OK; | |
304 | } | |
305 | ||
306 | static int set_pwm(const struct sr_dev_inst *sdi, uint8_t which, float freq, float duty) | |
307 | { | |
42f6dd55 | 308 | int CTRL_PWM[] = { REG_PWM1, REG_PWM2 }; |
f2cd2deb FS |
309 | struct dev_context *devc; |
310 | pwm_setting_dev_t cfg; | |
311 | pwm_setting_t *setting; | |
312 | int ret; | |
c3d40037 HK |
313 | uint8_t buf[2 * sizeof(uint32_t)]; |
314 | uint8_t *wrptr; | |
f2cd2deb FS |
315 | |
316 | devc = sdi->priv; | |
317 | ||
318 | if (which < 1 || which > 2) { | |
91f73872 | 319 | sr_err("Invalid PWM channel: %d.", which); |
f2cd2deb FS |
320 | return SR_ERR; |
321 | } | |
322 | if (freq > MAX_PWM_FREQ) { | |
91f73872 | 323 | sr_err("Too high a PWM frequency: %.1f.", freq); |
f2cd2deb FS |
324 | return SR_ERR; |
325 | } | |
326 | if (duty > 100 || duty < 0) { | |
91f73872 | 327 | sr_err("Invalid PWM duty cycle: %f.", duty); |
f2cd2deb FS |
328 | return SR_ERR; |
329 | } | |
330 | ||
331 | cfg.period = (uint32_t)(PWM_CLOCK / freq); | |
332 | cfg.duty = (uint32_t)(0.5f + (cfg.period * duty / 100.)); | |
91f73872 | 333 | sr_dbg("Set PWM%d period %d, duty %d.", which, cfg.period, cfg.duty); |
f2cd2deb | 334 | |
c3d40037 HK |
335 | wrptr = buf; |
336 | write_u32le_inc(&wrptr, cfg.period); | |
337 | write_u32le_inc(&wrptr, cfg.duty); | |
00849545 | 338 | ret = ctrl_out(sdi, CMD_FPGA_SPI, CTRL_PWM[which - 1], 0, buf, wrptr - buf); |
f2cd2deb | 339 | if (ret != SR_OK) { |
91f73872 GS |
340 | sr_err("Cannot setup PWM%d configuration %d %d.", |
341 | which, cfg.period, cfg.duty); | |
f2cd2deb FS |
342 | return ret; |
343 | } | |
344 | setting = &devc->pwm_setting[which - 1]; | |
345 | setting->freq = freq; | |
346 | setting->duty = duty; | |
f2cd2deb FS |
347 | |
348 | return SR_OK; | |
349 | } | |
350 | ||
351 | static int set_defaults(const struct sr_dev_inst *sdi) | |
352 | { | |
353 | struct dev_context *devc; | |
354 | int ret; | |
355 | ||
356 | devc = sdi->priv; | |
357 | ||
358 | devc->capture_ratio = 5; /* percent */ | |
359 | devc->cur_channels = 0xffff; | |
360 | devc->limit_samples = 5000000; | |
8b172e78 | 361 | devc->cur_samplerate = SR_MHZ(100); |
f2cd2deb FS |
362 | |
363 | ret = set_threshold_voltage(sdi, devc->threshold_voltage); | |
364 | if (ret) | |
365 | return ret; | |
366 | ||
367 | ret = enable_pwm(sdi, 0, 0); | |
368 | if (ret) | |
369 | return ret; | |
370 | ||
371 | ret = set_pwm(sdi, 1, 1e3, 50); | |
372 | if (ret) | |
373 | return ret; | |
374 | ||
375 | ret = set_pwm(sdi, 2, 100e3, 50); | |
376 | if (ret) | |
377 | return ret; | |
378 | ||
379 | ret = enable_pwm(sdi, 1, 1); | |
380 | if (ret) | |
381 | return ret; | |
382 | ||
383 | return SR_OK; | |
384 | } | |
385 | ||
386 | static int set_trigger_config(const struct sr_dev_inst *sdi) | |
387 | { | |
388 | struct dev_context *devc; | |
389 | struct sr_trigger *trigger; | |
390 | trigger_cfg_t cfg; | |
391 | GSList *stages; | |
392 | GSList *channel; | |
393 | struct sr_trigger_stage *stage1; | |
394 | struct sr_trigger_match *match; | |
395 | uint16_t ch_mask; | |
396 | int ret; | |
c3d40037 HK |
397 | uint8_t buf[4 * sizeof(uint32_t)]; |
398 | uint8_t *wrptr; | |
f2cd2deb FS |
399 | |
400 | devc = sdi->priv; | |
401 | trigger = sr_session_trigger_get(sdi->session); | |
402 | ||
403 | memset(&cfg, 0, sizeof(cfg)); | |
404 | ||
405 | cfg.channels = devc->cur_channels; | |
406 | ||
407 | if (trigger && trigger->stages) { | |
408 | stages = trigger->stages; | |
409 | stage1 = stages->data; | |
410 | if (stages->next) { | |
411 | sr_err("Only one trigger stage supported for now."); | |
412 | return SR_ERR; | |
413 | } | |
414 | channel = stage1->matches; | |
415 | while (channel) { | |
416 | match = channel->data; | |
417 | ch_mask = 1 << match->channel->index; | |
418 | ||
419 | switch (match->match) { | |
420 | case SR_TRIGGER_ZERO: | |
421 | cfg.level |= ch_mask; | |
422 | cfg.high_or_falling &= ~ch_mask; | |
423 | break; | |
424 | case SR_TRIGGER_ONE: | |
425 | cfg.level |= ch_mask; | |
426 | cfg.high_or_falling |= ch_mask; | |
427 | break; | |
428 | case SR_TRIGGER_RISING: | |
429 | if ((cfg.enabled & ~cfg.level)) { | |
91f73872 | 430 | sr_err("Device only supports one edge trigger."); |
f2cd2deb FS |
431 | return SR_ERR; |
432 | } | |
433 | cfg.level &= ~ch_mask; | |
434 | cfg.high_or_falling &= ~ch_mask; | |
435 | break; | |
436 | case SR_TRIGGER_FALLING: | |
437 | if ((cfg.enabled & ~cfg.level)) { | |
91f73872 | 438 | sr_err("Device only supports one edge trigger."); |
f2cd2deb FS |
439 | return SR_ERR; |
440 | } | |
441 | cfg.level &= ~ch_mask; | |
442 | cfg.high_or_falling |= ch_mask; | |
443 | break; | |
444 | default: | |
91f73872 | 445 | sr_err("Unknown trigger condition."); |
f2cd2deb FS |
446 | return SR_ERR; |
447 | } | |
448 | cfg.enabled |= ch_mask; | |
449 | channel = channel->next; | |
450 | } | |
451 | } | |
91f73872 GS |
452 | sr_dbg("Set trigger config: " |
453 | "channels 0x%04x, trigger-enabled 0x%04x, " | |
454 | "level-triggered 0x%04x, high/falling 0x%04x.", | |
455 | cfg.channels, cfg.enabled, cfg.level, cfg.high_or_falling); | |
f2cd2deb FS |
456 | |
457 | devc->had_triggers_configured = cfg.enabled != 0; | |
458 | ||
c3d40037 HK |
459 | wrptr = buf; |
460 | write_u32le_inc(&wrptr, cfg.channels); | |
461 | write_u32le_inc(&wrptr, cfg.enabled); | |
462 | write_u32le_inc(&wrptr, cfg.level); | |
463 | write_u32le_inc(&wrptr, cfg.high_or_falling); | |
42f6dd55 | 464 | ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_TRIGGER, 16, buf, wrptr - buf); |
f2cd2deb | 465 | if (ret != SR_OK) { |
91f73872 | 466 | sr_err("Cannot setup trigger configuration."); |
f2cd2deb FS |
467 | return ret; |
468 | } | |
469 | ||
470 | return SR_OK; | |
471 | } | |
472 | ||
473 | static int set_sample_config(const struct sr_dev_inst *sdi) | |
474 | { | |
475 | struct dev_context *devc; | |
f2cd2deb | 476 | double clock_divisor; |
f2cd2deb FS |
477 | uint64_t total; |
478 | int ret; | |
c3d40037 HK |
479 | uint16_t divisor; |
480 | uint8_t buf[2 * sizeof(uint32_t) + 48 / 8 + sizeof(uint16_t)]; | |
481 | uint8_t *wrptr; | |
f2cd2deb FS |
482 | |
483 | devc = sdi->priv; | |
484 | total = 128 * 1024 * 1024; | |
485 | ||
8b172e78 | 486 | if (devc->cur_samplerate > devc->max_samplerate) { |
91f73872 GS |
487 | sr_err("Too high a sample rate: %" PRIu64 ".", |
488 | devc->cur_samplerate); | |
f2cd2deb FS |
489 | return SR_ERR; |
490 | } | |
491 | ||
8b172e78 | 492 | clock_divisor = devc->max_samplerate / (double)devc->cur_samplerate; |
f2cd2deb FS |
493 | if (clock_divisor > 0xffff) |
494 | clock_divisor = 0xffff; | |
c3d40037 | 495 | divisor = (uint16_t)(clock_divisor + 0.5); |
8b172e78 | 496 | devc->cur_samplerate = devc->max_samplerate / divisor; |
f2cd2deb FS |
497 | |
498 | if (devc->limit_samples > MAX_SAMPLE_DEPTH) { | |
91f73872 GS |
499 | sr_err("Too high a sample depth: %" PRIu64 ".", |
500 | devc->limit_samples); | |
f2cd2deb FS |
501 | return SR_ERR; |
502 | } | |
f2cd2deb FS |
503 | |
504 | devc->pre_trigger_size = (devc->capture_ratio * devc->limit_samples) / 100; | |
505 | ||
91f73872 GS |
506 | sr_dbg("Set sample config: %" PRIu64 "kHz, %" PRIu64 " samples, trigger-pos %" PRIu64 "%%.", |
507 | devc->cur_samplerate / 1000, | |
508 | devc->limit_samples, | |
509 | devc->capture_ratio); | |
f2cd2deb | 510 | |
c3d40037 HK |
511 | wrptr = buf; |
512 | write_u32le_inc(&wrptr, devc->limit_samples); | |
0d8e1ffc KG |
513 | write_u8_inc(&wrptr, 0); |
514 | write_u32le_inc(&wrptr, devc->pre_trigger_size); | |
96dc954e | 515 | write_u32le_inc(&wrptr, ((total * devc->capture_ratio) / 100) & 0xffffff00); |
0d8e1ffc KG |
516 | write_u16le_inc(&wrptr, divisor); |
517 | write_u8_inc(&wrptr, 0); | |
c3d40037 | 518 | |
42f6dd55 | 519 | ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_SAMPLING, 0, buf, wrptr - buf); |
f2cd2deb | 520 | if (ret != SR_OK) { |
91f73872 | 521 | sr_err("Cannot setup acquisition configuration."); |
f2cd2deb FS |
522 | return ret; |
523 | } | |
524 | ||
525 | return SR_OK; | |
526 | } | |
527 | ||
96dc954e GS |
528 | /* |
529 | * FPGA register REG_RUN holds the run state (u16le format). Bit fields | |
530 | * of interest: | |
531 | * bit 0: value 1 = idle | |
532 | * bit 1: value 1 = writing to SDRAM | |
533 | * bit 2: value 0 = waiting for trigger, 1 = trigger seen | |
534 | * bit 3: value 0 = pretrigger sampling, 1 = posttrigger sampling | |
535 | * The meaning of other bit fields is unknown. | |
7601dca7 | 536 | * |
96dc954e GS |
537 | * Typical values in order of appearance during execution: |
538 | * 0x85e2: pre-sampling, samples before the trigger position, | |
539 | * when capture ratio > 0% | |
540 | * 0x85ea: pre-sampling complete, now waiting for the trigger | |
541 | * (whilst sampling continuously) | |
542 | * 0x85ee: trigger seen, capturing post-trigger samples, running | |
543 | * 0x85ed: idle | |
f2cd2deb FS |
544 | */ |
545 | static uint16_t run_state(const struct sr_dev_inst *sdi) | |
546 | { | |
547 | uint16_t state; | |
84fe94bd | 548 | static uint16_t previous_state = 0; |
f2cd2deb FS |
549 | int ret; |
550 | ||
42f6dd55 | 551 | if ((ret = ctrl_in(sdi, CMD_FPGA_SPI, REG_RUN, 0, &state, sizeof(state))) != SR_OK) { |
91f73872 | 552 | sr_err("Cannot read run state."); |
f2cd2deb FS |
553 | return ret; |
554 | } | |
7601dca7 | 555 | |
96dc954e GS |
556 | /* |
557 | * Avoid flooding the log, only dump values as they change. | |
558 | * The routine is called about every 50ms. | |
7601dca7 | 559 | */ |
84fe94bd | 560 | if (state != previous_state) { |
7601dca7 | 561 | previous_state = state; |
84fe94bd | 562 | if ((state & 0x0003) == 0x01) { |
91f73872 | 563 | sr_dbg("Run state: 0x%04x (%s).", state, "idle"); |
7601dca7 | 564 | } |
84fe94bd | 565 | else if ((state & 0x000f) == 0x02) { |
91f73872 GS |
566 | sr_dbg("Run state: 0x%04x (%s).", state, |
567 | "pre-trigger sampling"); | |
7601dca7 | 568 | } |
84fe94bd | 569 | else if ((state & 0x000f) == 0x0a) { |
91f73872 GS |
570 | sr_dbg("Run state: 0x%04x (%s).", state, |
571 | "sampling, waiting for trigger"); | |
7601dca7 | 572 | } |
84fe94bd | 573 | else if ((state & 0x000f) == 0x0e) { |
91f73872 GS |
574 | sr_dbg("Run state: 0x%04x (%s).", state, |
575 | "post-trigger sampling"); | |
7601dca7 KG |
576 | } |
577 | else { | |
91f73872 | 578 | sr_dbg("Run state: 0x%04x.", state); |
7601dca7 KG |
579 | } |
580 | } | |
f2cd2deb FS |
581 | |
582 | return state; | |
583 | } | |
584 | ||
585 | static int set_run_mode(const struct sr_dev_inst *sdi, uint8_t fast_blinking) | |
586 | { | |
587 | int ret; | |
588 | ||
42f6dd55 | 589 | if ((ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_RUN, 0, &fast_blinking, sizeof(fast_blinking))) != SR_OK) { |
91f73872 | 590 | sr_err("Cannot configure run mode %d.", fast_blinking); |
f2cd2deb FS |
591 | return ret; |
592 | } | |
593 | ||
594 | return SR_OK; | |
595 | } | |
596 | ||
597 | static int get_capture_info(const struct sr_dev_inst *sdi) | |
598 | { | |
599 | struct dev_context *devc; | |
600 | int ret; | |
c3d40037 HK |
601 | uint8_t buf[3 * sizeof(uint32_t)]; |
602 | const uint8_t *rdptr; | |
f2cd2deb FS |
603 | |
604 | devc = sdi->priv; | |
605 | ||
42f6dd55 | 606 | if ((ret = ctrl_in(sdi, CMD_FPGA_SPI, REG_SAMPLING, 0, buf, sizeof(buf))) != SR_OK) { |
91f73872 | 607 | sr_err("Cannot read capture info."); |
f2cd2deb FS |
608 | return ret; |
609 | } | |
c3d40037 HK |
610 | |
611 | rdptr = buf; | |
612 | devc->info.n_rep_packets = read_u32le_inc(&rdptr); | |
613 | devc->info.n_rep_packets_before_trigger = read_u32le_inc(&rdptr); | |
614 | devc->info.write_pos = read_u32le_inc(&rdptr); | |
f2cd2deb | 615 | |
91f73872 | 616 | sr_dbg("Capture info: n_rep_packets: 0x%08x/%d, before_trigger: 0x%08x/%d, write_pos: 0x%08x%d.", |
f2cd2deb | 617 | devc->info.n_rep_packets, devc->info.n_rep_packets, |
91f73872 GS |
618 | devc->info.n_rep_packets_before_trigger, |
619 | devc->info.n_rep_packets_before_trigger, | |
f2cd2deb FS |
620 | devc->info.write_pos, devc->info.write_pos); |
621 | ||
91f73872 GS |
622 | if (devc->info.n_rep_packets % 5) { |
623 | sr_warn("Unexpected packets count %lu, not a multiple of 5.", | |
624 | (unsigned long)devc->info.n_rep_packets); | |
625 | } | |
f2cd2deb FS |
626 | |
627 | return SR_OK; | |
628 | } | |
629 | ||
630 | SR_PRIV int la2016_upload_firmware(struct sr_context *sr_ctx, libusb_device *dev, uint16_t product_id) | |
631 | { | |
632 | char fw_file[1024]; | |
633 | snprintf(fw_file, sizeof(fw_file) - 1, UC_FIRMWARE, product_id); | |
40a0b2f4 | 634 | return ezusb_upload_firmware(sr_ctx, dev, USB_CONFIGURATION, fw_file); |
f2cd2deb FS |
635 | } |
636 | ||
637 | SR_PRIV int la2016_setup_acquisition(const struct sr_dev_inst *sdi) | |
638 | { | |
639 | struct dev_context *devc; | |
640 | int ret; | |
641 | uint8_t cmd; | |
642 | ||
643 | devc = sdi->priv; | |
644 | ||
645 | ret = set_threshold_voltage(sdi, devc->threshold_voltage); | |
646 | if (ret != SR_OK) | |
647 | return ret; | |
648 | ||
649 | cmd = 0; | |
42f6dd55 | 650 | if ((ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_CAPT_MODE, 0, &cmd, sizeof(cmd))) != SR_OK) { |
91f73872 | 651 | sr_err("Cannot send command to stop sampling."); |
f2cd2deb FS |
652 | return ret; |
653 | } | |
654 | ||
655 | ret = set_trigger_config(sdi); | |
656 | if (ret != SR_OK) | |
657 | return ret; | |
658 | ||
659 | ret = set_sample_config(sdi); | |
660 | if (ret != SR_OK) | |
661 | return ret; | |
662 | ||
663 | return SR_OK; | |
664 | } | |
665 | ||
666 | SR_PRIV int la2016_start_acquisition(const struct sr_dev_inst *sdi) | |
667 | { | |
3ebc1cb2 GS |
668 | int ret; |
669 | ||
670 | ret = set_run_mode(sdi, 3); | |
671 | if (ret != SR_OK) | |
672 | return ret; | |
673 | ||
674 | return SR_OK; | |
f2cd2deb FS |
675 | } |
676 | ||
3ebc1cb2 | 677 | static int la2016_stop_acquisition(const struct sr_dev_inst *sdi) |
f2cd2deb | 678 | { |
3ebc1cb2 GS |
679 | int ret; |
680 | ||
681 | ret = set_run_mode(sdi, 0); | |
682 | if (ret != SR_OK) | |
683 | return ret; | |
684 | ||
685 | return SR_OK; | |
f2cd2deb FS |
686 | } |
687 | ||
688 | SR_PRIV int la2016_abort_acquisition(const struct sr_dev_inst *sdi) | |
689 | { | |
3ebc1cb2 GS |
690 | int ret; |
691 | struct dev_context *devc; | |
692 | ||
693 | ret = la2016_stop_acquisition(sdi); | |
694 | if (ret != SR_OK) | |
695 | return ret; | |
696 | ||
697 | devc = sdi ? sdi->priv : NULL; | |
698 | if (devc && devc->transfer) | |
699 | libusb_cancel_transfer(devc->transfer); | |
700 | ||
701 | return SR_OK; | |
f2cd2deb FS |
702 | } |
703 | ||
3ebc1cb2 | 704 | static int la2016_has_triggered(const struct sr_dev_inst *sdi) |
f2cd2deb FS |
705 | { |
706 | uint16_t state; | |
707 | ||
708 | state = run_state(sdi); | |
709 | ||
710 | return (state & 0x3) == 1; | |
711 | } | |
712 | ||
3ebc1cb2 | 713 | static int la2016_start_retrieval(const struct sr_dev_inst *sdi, libusb_transfer_cb_fn cb) |
f2cd2deb FS |
714 | { |
715 | struct dev_context *devc; | |
716 | struct sr_usb_dev_inst *usb; | |
717 | int ret; | |
c3d40037 HK |
718 | uint8_t wrbuf[2 * sizeof(uint32_t)]; |
719 | uint8_t *wrptr; | |
f2cd2deb FS |
720 | uint32_t to_read; |
721 | uint8_t *buffer; | |
722 | ||
723 | devc = sdi->priv; | |
724 | usb = sdi->conn; | |
725 | ||
726 | if ((ret = get_capture_info(sdi)) != SR_OK) | |
727 | return ret; | |
728 | ||
c3d40037 HK |
729 | devc->n_transfer_packets_to_read = devc->info.n_rep_packets / NUM_PACKETS_IN_CHUNK; |
730 | devc->n_bytes_to_read = devc->n_transfer_packets_to_read * TRANSFER_PACKET_LENGTH; | |
f2cd2deb FS |
731 | devc->read_pos = devc->info.write_pos - devc->n_bytes_to_read; |
732 | devc->n_reps_until_trigger = devc->info.n_rep_packets_before_trigger; | |
733 | ||
91f73872 | 734 | sr_dbg("Want to read %u xfer-packets starting from pos %" PRIu32 ".", |
f2cd2deb FS |
735 | devc->n_transfer_packets_to_read, devc->read_pos); |
736 | ||
00849545 | 737 | if ((ret = ctrl_out(sdi, CMD_BULK_RESET, 0x00, 0, NULL, 0)) != SR_OK) { |
91f73872 | 738 | sr_err("Cannot reset USB bulk state."); |
f2cd2deb FS |
739 | return ret; |
740 | } | |
91f73872 GS |
741 | sr_dbg("Will read from 0x%08lx, 0x%08x bytes.", |
742 | (unsigned long)devc->read_pos, devc->n_bytes_to_read); | |
c3d40037 HK |
743 | wrptr = wrbuf; |
744 | write_u32le_inc(&wrptr, devc->read_pos); | |
745 | write_u32le_inc(&wrptr, devc->n_bytes_to_read); | |
42f6dd55 | 746 | if ((ret = ctrl_out(sdi, CMD_FPGA_SPI, REG_BULK, 0, wrbuf, wrptr - wrbuf)) != SR_OK) { |
91f73872 | 747 | sr_err("Cannot send USB bulk config."); |
f2cd2deb FS |
748 | return ret; |
749 | } | |
00849545 | 750 | if ((ret = ctrl_out(sdi, CMD_BULK_START, 0x00, 0, NULL, 0)) != SR_OK) { |
91f73872 | 751 | sr_err("Cannot unblock USB bulk transfers."); |
f2cd2deb FS |
752 | return ret; |
753 | } | |
754 | ||
96dc954e GS |
755 | /* |
756 | * Pick a buffer size for all USB transfers. The buffer size | |
757 | * must be a multiple of the endpoint packet size. And cannot | |
758 | * exceed a maximum value. | |
759 | */ | |
f2cd2deb | 760 | to_read = devc->n_bytes_to_read; |
96dc954e GS |
761 | if (to_read >= LA2016_USB_BUFSZ) /* Multiple transfers. */ |
762 | to_read = LA2016_USB_BUFSZ; | |
763 | else /* One transfer. */ | |
e847645b | 764 | to_read = (to_read + (LA2016_EP6_PKTSZ-1)) & ~(LA2016_EP6_PKTSZ-1); |
f2cd2deb FS |
765 | buffer = g_try_malloc(to_read); |
766 | if (!buffer) { | |
91f73872 GS |
767 | sr_dbg("USB bulk transfer size %d bytes.", (int)to_read); |
768 | sr_err("Cannot allocate buffer for USB bulk transfer."); | |
f2cd2deb FS |
769 | return SR_ERR_MALLOC; |
770 | } | |
771 | ||
772 | devc->transfer = libusb_alloc_transfer(0); | |
773 | libusb_fill_bulk_transfer( | |
774 | devc->transfer, usb->devhdl, | |
775 | 0x86, buffer, to_read, | |
776 | cb, (void *)sdi, DEFAULT_TIMEOUT_MS); | |
777 | ||
778 | if ((ret = libusb_submit_transfer(devc->transfer)) != 0) { | |
91f73872 | 779 | sr_err("Cannot submit USB transfer: %s.", libusb_error_name(ret)); |
f2cd2deb FS |
780 | libusb_free_transfer(devc->transfer); |
781 | devc->transfer = NULL; | |
782 | g_free(buffer); | |
783 | return SR_ERR; | |
784 | } | |
785 | ||
786 | return SR_OK; | |
787 | } | |
788 | ||
dfac9592 GS |
789 | static void send_chunk(struct sr_dev_inst *sdi, |
790 | const uint8_t *packets, unsigned int num_tfers) | |
791 | { | |
792 | struct dev_context *devc; | |
793 | struct sr_datafeed_logic logic; | |
794 | struct sr_datafeed_packet sr_packet; | |
795 | unsigned int max_samples, n_samples, total_samples, free_n_samples; | |
796 | unsigned int i, j, k; | |
797 | int do_signal_trigger; | |
798 | uint16_t *wp; | |
799 | const uint8_t *rp; | |
800 | uint16_t state; | |
801 | uint8_t repetitions; | |
802 | ||
803 | devc = sdi->priv; | |
804 | ||
805 | logic.unitsize = 2; | |
806 | logic.data = devc->convbuffer; | |
807 | ||
808 | sr_packet.type = SR_DF_LOGIC; | |
809 | sr_packet.payload = &logic; | |
810 | ||
811 | max_samples = devc->convbuffer_size / 2; | |
812 | n_samples = 0; | |
813 | wp = (uint16_t *)devc->convbuffer; | |
814 | total_samples = 0; | |
815 | do_signal_trigger = 0; | |
816 | ||
817 | if (devc->had_triggers_configured && devc->reading_behind_trigger == 0 && devc->info.n_rep_packets_before_trigger == 0) { | |
818 | std_session_send_df_trigger(sdi); | |
819 | devc->reading_behind_trigger = 1; | |
820 | } | |
821 | ||
822 | rp = packets; | |
823 | for (i = 0; i < num_tfers; i++) { | |
824 | for (k = 0; k < NUM_PACKETS_IN_CHUNK; k++) { | |
825 | free_n_samples = max_samples - n_samples; | |
826 | if (free_n_samples < 256 || do_signal_trigger) { | |
827 | logic.length = n_samples * 2; | |
828 | sr_session_send(sdi, &sr_packet); | |
829 | n_samples = 0; | |
830 | wp = (uint16_t *)devc->convbuffer; | |
831 | if (do_signal_trigger) { | |
832 | std_session_send_df_trigger(sdi); | |
833 | do_signal_trigger = 0; | |
834 | } | |
835 | } | |
836 | ||
837 | state = read_u16le_inc(&rp); | |
838 | repetitions = read_u8_inc(&rp); | |
839 | for (j = 0; j < repetitions; j++) | |
840 | *wp++ = state; | |
841 | ||
842 | n_samples += repetitions; | |
843 | total_samples += repetitions; | |
844 | devc->total_samples += repetitions; | |
845 | if (!devc->reading_behind_trigger) { | |
846 | devc->n_reps_until_trigger--; | |
847 | if (devc->n_reps_until_trigger == 0) { | |
848 | devc->reading_behind_trigger = 1; | |
849 | do_signal_trigger = 1; | |
91f73872 | 850 | sr_dbg("Trigger position after %" PRIu64 " samples, %.6fms.", |
dfac9592 GS |
851 | devc->total_samples, |
852 | (double)devc->total_samples / devc->cur_samplerate * 1e3); | |
853 | } | |
854 | } | |
855 | } | |
856 | (void)read_u8_inc(&rp); /* Skip sequence number. */ | |
857 | } | |
858 | if (n_samples) { | |
859 | logic.length = n_samples * 2; | |
860 | sr_session_send(sdi, &sr_packet); | |
861 | if (do_signal_trigger) { | |
862 | std_session_send_df_trigger(sdi); | |
863 | } | |
864 | } | |
91f73872 | 865 | sr_dbg("Send_chunk done after %u samples.", total_samples); |
dfac9592 GS |
866 | } |
867 | ||
868 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
869 | { | |
870 | struct sr_dev_inst *sdi; | |
871 | struct dev_context *devc; | |
872 | struct sr_usb_dev_inst *usb; | |
873 | int ret; | |
874 | ||
875 | sdi = transfer->user_data; | |
876 | devc = sdi->priv; | |
877 | usb = sdi->conn; | |
878 | ||
879 | sr_dbg("receive_transfer(): status %s received %d bytes.", | |
880 | libusb_error_name(transfer->status), transfer->actual_length); | |
881 | ||
882 | if (transfer->status == LIBUSB_TRANSFER_TIMED_OUT) { | |
91f73872 | 883 | sr_err("USB bulk transfer timeout."); |
dfac9592 GS |
884 | devc->transfer_finished = 1; |
885 | } | |
886 | send_chunk(sdi, transfer->buffer, transfer->actual_length / TRANSFER_PACKET_LENGTH); | |
887 | ||
888 | devc->n_bytes_to_read -= transfer->actual_length; | |
889 | if (devc->n_bytes_to_read) { | |
890 | uint32_t to_read = devc->n_bytes_to_read; | |
96dc954e GS |
891 | /* |
892 | * Determine read size for the next USB transfer. Make | |
893 | * the buffer size a multiple of the endpoint packet | |
894 | * size. Don't exceed a maximum value. | |
895 | */ | |
dfac9592 GS |
896 | if (to_read >= LA2016_USB_BUFSZ) |
897 | to_read = LA2016_USB_BUFSZ; | |
96dc954e | 898 | else |
dfac9592 GS |
899 | to_read = (to_read + (LA2016_EP6_PKTSZ-1)) & ~(LA2016_EP6_PKTSZ-1); |
900 | libusb_fill_bulk_transfer( | |
901 | transfer, usb->devhdl, | |
902 | 0x86, transfer->buffer, to_read, | |
903 | receive_transfer, (void *)sdi, DEFAULT_TIMEOUT_MS); | |
904 | ||
905 | if ((ret = libusb_submit_transfer(transfer)) == 0) | |
906 | return; | |
91f73872 GS |
907 | sr_err("Cannot submit another USB transfer: %s.", |
908 | libusb_error_name(ret)); | |
dfac9592 GS |
909 | } |
910 | ||
911 | g_free(transfer->buffer); | |
912 | libusb_free_transfer(transfer); | |
913 | devc->transfer_finished = 1; | |
914 | } | |
915 | ||
916 | SR_PRIV int la2016_receive_data(int fd, int revents, void *cb_data) | |
917 | { | |
918 | const struct sr_dev_inst *sdi; | |
919 | struct dev_context *devc; | |
920 | struct drv_context *drvc; | |
921 | struct timeval tv; | |
922 | ||
923 | (void)fd; | |
924 | (void)revents; | |
925 | ||
926 | sdi = cb_data; | |
927 | devc = sdi->priv; | |
928 | drvc = sdi->driver->context; | |
929 | ||
930 | if (devc->have_trigger == 0) { | |
931 | if (la2016_has_triggered(sdi) == 0) { | |
96dc954e | 932 | /* Not yet ready for sample data download. */ |
dfac9592 GS |
933 | return TRUE; |
934 | } | |
935 | devc->have_trigger = 1; | |
936 | devc->transfer_finished = 0; | |
937 | devc->reading_behind_trigger = 0; | |
938 | devc->total_samples = 0; | |
96dc954e | 939 | /* We can start downloading sample data. */ |
dfac9592 | 940 | if (la2016_start_retrieval(sdi, receive_transfer) != SR_OK) { |
91f73872 | 941 | sr_err("Cannot start acquisition data download."); |
dfac9592 GS |
942 | return FALSE; |
943 | } | |
91f73872 | 944 | sr_dbg("Acquisition data download started."); |
dfac9592 GS |
945 | std_session_send_df_frame_begin(sdi); |
946 | ||
947 | return TRUE; | |
948 | } | |
949 | ||
950 | tv.tv_sec = tv.tv_usec = 0; | |
951 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
952 | ||
953 | if (devc->transfer_finished) { | |
91f73872 | 954 | sr_dbg("Download finished, post processing."); |
dfac9592 GS |
955 | std_session_send_df_frame_end(sdi); |
956 | ||
957 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
958 | std_session_send_df_end(sdi); | |
959 | ||
960 | la2016_stop_acquisition(sdi); | |
961 | ||
962 | g_free(devc->convbuffer); | |
963 | devc->convbuffer = NULL; | |
964 | ||
965 | devc->transfer = NULL; | |
966 | ||
91f73872 | 967 | sr_dbg("Download finished, done post processing."); |
dfac9592 GS |
968 | } |
969 | ||
970 | return TRUE; | |
971 | } | |
972 | ||
f2cd2deb FS |
973 | SR_PRIV int la2016_init_device(const struct sr_dev_inst *sdi) |
974 | { | |
8b172e78 | 975 | struct dev_context *devc; |
f2cd2deb | 976 | uint16_t state; |
9de389b1 KG |
977 | uint8_t buf[8]; |
978 | int16_t purchase_date_bcd[2]; | |
979 | uint8_t magic; | |
980 | int ret; | |
f2cd2deb | 981 | |
8b172e78 KG |
982 | devc = sdi->priv; |
983 | ||
96dc954e GS |
984 | /* |
985 | * Four EEPROM bytes at offset 0x20 are purchase year and month | |
986 | * in BCD format, with 16bit complemented checksum. For example | |
987 | * 20 04 df fb translates to 2020-04. This can help identify the | |
988 | * age of devices when unknown magic numbers are seen. | |
9de389b1 KG |
989 | */ |
990 | if ((ret = ctrl_in(sdi, CMD_EEPROM, 0x20, 0, purchase_date_bcd, sizeof(purchase_date_bcd))) != SR_OK) { | |
91f73872 | 991 | sr_err("Cannot read purchase date in EEPROM."); |
9de389b1 KG |
992 | } |
993 | else { | |
91f73872 GS |
994 | sr_dbg("Purchase date: 20%02hx-%02hx.", |
995 | (purchase_date_bcd[0]) & 0xff, | |
996 | (purchase_date_bcd[0] >> 8) & 0xff); | |
84fe94bd | 997 | if (purchase_date_bcd[0] != (0x0ffff & ~purchase_date_bcd[1])) { |
91f73872 | 998 | sr_err("Purchase date fails checksum test."); |
9de389b1 | 999 | } |
f2cd2deb | 1000 | } |
f2cd2deb | 1001 | |
9de389b1 | 1002 | /* |
96dc954e GS |
1003 | * Several Kingst logic analyzer devices share the same USB VID |
1004 | * and PID. The product ID determines which MCU firmware to load. | |
1005 | * The MCU firmware provides access to EEPROM content which then | |
1006 | * allows to identify the device model. Which in turn determines | |
1007 | * which FPGA bitstream to load. Eight bytes at offset 0x08 are | |
1008 | * to get inspected. | |
9de389b1 | 1009 | * |
96dc954e GS |
1010 | * EEPROM content for model identification is kept redundantly |
1011 | * in memory. The values are stored in verbatim and in inverted | |
1012 | * form, multiple copies are kept at different offsets. Example | |
1013 | * data: | |
9de389b1 | 1014 | * |
96dc954e GS |
1015 | * magic 0x08 |
1016 | * | ~magic 0xf7 | |
1017 | * | | | |
1018 | * 08f7000008f710ef | |
1019 | * | | | |
1020 | * | ~magic backup | |
1021 | * magic backup | |
9de389b1 | 1022 | * |
96dc954e GS |
1023 | * Exclusively inspecting the magic byte appears to be sufficient, |
1024 | * other fields seem to be 'don't care'. | |
9de389b1 | 1025 | * |
96dc954e GS |
1026 | * magic 2 == LA2016 using "kingst-la2016-fpga.bitstream" |
1027 | * magic 3 == LA1016 using "kingst-la1016-fpga.bitstream" | |
1028 | * magic 8 == LA2016a using "kingst-la2016a1-fpga.bitstream" | |
1029 | * (latest v1.3.0 PCB, perhaps others) | |
1030 | * magic 9 == LA1016a using "kingst-la1016a1-fpga.bitstream" | |
1031 | * (latest v1.3.0 PCB, perhaps others) | |
9de389b1 | 1032 | * |
96dc954e GS |
1033 | * When EEPROM content does not match the hardware configuration |
1034 | * (the board layout), the software may load but yield incorrect | |
1035 | * results (like swapped channels). The FPGA bitstream itself | |
1036 | * will authenticate with IC U10 and fail when its capabilities | |
1037 | * do not match the hardware model. An LA1016 won't become a | |
1038 | * LA2016 by faking its EEPROM content. | |
9de389b1 | 1039 | */ |
9de389b1 | 1040 | if ((ret = ctrl_in(sdi, CMD_EEPROM, 0x08, 0, &buf, sizeof(buf))) != SR_OK) { |
91f73872 | 1041 | sr_err("Cannot read EEPROM device identifier bytes."); |
f2cd2deb FS |
1042 | return ret; |
1043 | } | |
f2cd2deb | 1044 | |
9de389b1 | 1045 | magic = 0; |
96dc954e GS |
1046 | if (buf[0] == (0xff & ~buf[1])) { |
1047 | /* Primary copy of magic passes complement check. */ | |
9de389b1 KG |
1048 | magic = buf[0]; |
1049 | } | |
1050 | else if (buf[4] == (0x0ff & ~buf[5])) { | |
96dc954e | 1051 | /* Backup copy of magic passes complement check. */ |
91f73872 | 1052 | sr_dbg("Using backup copy of device type magic number."); |
9de389b1 | 1053 | magic = buf[4]; |
f2cd2deb FS |
1054 | } |
1055 | ||
91f73872 | 1056 | sr_dbg("Device type: magic number is %hhu.", magic); |
9de389b1 | 1057 | |
96dc954e | 1058 | /* Select the FPGA bitstream depending on the model. */ |
9de389b1 KG |
1059 | switch (magic) { |
1060 | case 2: | |
1061 | ret = upload_fpga_bitstream(sdi, FPGA_FW_LA2016); | |
8b172e78 KG |
1062 | devc->max_samplerate = MAX_SAMPLE_RATE_LA2016; |
1063 | break; | |
1064 | case 3: | |
1065 | ret = upload_fpga_bitstream(sdi, FPGA_FW_LA1016); | |
1066 | devc->max_samplerate = MAX_SAMPLE_RATE_LA1016; | |
9de389b1 KG |
1067 | break; |
1068 | case 8: | |
1069 | ret = upload_fpga_bitstream(sdi, FPGA_FW_LA2016A); | |
8b172e78 KG |
1070 | devc->max_samplerate = MAX_SAMPLE_RATE_LA2016; |
1071 | break; | |
1072 | case 9: | |
1073 | ret = upload_fpga_bitstream(sdi, FPGA_FW_LA1016A); | |
1074 | devc->max_samplerate = MAX_SAMPLE_RATE_LA1016; | |
9de389b1 KG |
1075 | break; |
1076 | default: | |
91f73872 | 1077 | sr_err("Cannot identify as one of the supported models."); |
3f48ab02 FS |
1078 | return SR_ERR; |
1079 | } | |
f2cd2deb | 1080 | |
9de389b1 | 1081 | if (ret != SR_OK) { |
91f73872 | 1082 | sr_err("Cannot upload FPGA bitstream."); |
9de389b1 KG |
1083 | return ret; |
1084 | } | |
1085 | ||
f2cd2deb | 1086 | state = run_state(sdi); |
9de389b1 | 1087 | if (state != 0x85e9) { |
91f73872 | 1088 | sr_warn("Unexpected run state, want 0x85e9, got 0x%04x.", state); |
9de389b1 | 1089 | } |
f2cd2deb | 1090 | |
00849545 | 1091 | if ((ret = ctrl_out(sdi, CMD_BULK_RESET, 0x00, 0, NULL, 0)) != SR_OK) { |
91f73872 | 1092 | sr_err("Cannot reset USB bulk transfer."); |
f2cd2deb FS |
1093 | return ret; |
1094 | } | |
9de389b1 | 1095 | |
91f73872 | 1096 | sr_dbg("Device should be initialized."); |
f2cd2deb FS |
1097 | |
1098 | return set_defaults(sdi); | |
1099 | } | |
1100 | ||
1101 | SR_PRIV int la2016_deinit_device(const struct sr_dev_inst *sdi) | |
1102 | { | |
1103 | int ret; | |
1104 | ||
00849545 | 1105 | if ((ret = ctrl_out(sdi, CMD_FPGA_ENABLE, 0x00, 0, NULL, 0)) != SR_OK) { |
91f73872 | 1106 | sr_err("Cannot deinitialize device's FPGA."); |
f2cd2deb FS |
1107 | return ret; |
1108 | } | |
1109 | ||
1110 | return SR_OK; | |
1111 | } |