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b908f067 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
b908f067 | 3 | * |
b172c130 | 4 | * Copyright (C) 2011-2014 Uwe Hermann <uwe@hermann-uwe.de> |
b908f067 UH |
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 | |
2ea1fdf1 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
b908f067 UH |
18 | */ |
19 | ||
7b356712 UH |
20 | #ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA_PROTOCOL_H |
21 | #define LIBSIGROK_HARDWARE_CHRONOVU_LA_PROTOCOL_H | |
b908f067 UH |
22 | |
23 | #include <glib.h> | |
382bea82 | 24 | #include <libusb.h> |
b908f067 UH |
25 | #include <ftdi.h> |
26 | #include <stdint.h> | |
00910580 | 27 | #include <string.h> |
c1aae900 | 28 | #include <libsigrok/libsigrok.h> |
45c59c8b | 29 | #include "libsigrok-internal.h" |
b908f067 | 30 | |
00910580 | 31 | #define LOG_PREFIX "la8/la16" |
f3a35908 | 32 | |
b908f067 | 33 | #define SDRAM_SIZE (8 * 1024 * 1024) |
14563512 | 34 | #define MAX_NUM_SAMPLES SDRAM_SIZE |
b908f067 UH |
35 | |
36 | #define BS 4096 /* Block size */ | |
37 | #define NUM_BLOCKS 2048 /* Number of blocks */ | |
38 | ||
00910580 UH |
39 | enum { |
40 | CHRONOVU_LA8, | |
41 | CHRONOVU_LA16, | |
42 | }; | |
43 | ||
44 | struct cv_profile { | |
45 | int model; | |
46 | const char *modelname; | |
47 | const char *iproduct; /* USB iProduct string */ | |
48 | unsigned int num_channels; | |
49 | uint64_t max_samplerate; | |
aeff7fa2 | 50 | const int num_trigger_matches; |
00910580 UH |
51 | float trigger_constant; |
52 | }; | |
53 | ||
b908f067 | 54 | /* Private, per-device-instance driver context. */ |
1644fb24 | 55 | struct dev_context { |
00910580 UH |
56 | /** Device profile struct for this device. */ |
57 | const struct cv_profile *prof; | |
58 | ||
b908f067 UH |
59 | /** FTDI device context (used by libftdi). */ |
60 | struct ftdi_context *ftdic; | |
61 | ||
62 | /** The currently configured samplerate of the device. */ | |
63 | uint64_t cur_samplerate; | |
64 | ||
65 | /** The current sampling limit (in ms). */ | |
66 | uint64_t limit_msec; | |
67 | ||
68 | /** The current sampling limit (in number of samples). */ | |
69 | uint64_t limit_samples; | |
70 | ||
b908f067 UH |
71 | /** |
72 | * A buffer containing some (mangled) samples from the device. | |
73 | * Format: Pretty mangled-up (due to hardware reasons), see code. | |
74 | */ | |
75 | uint8_t mangled_buf[BS]; | |
76 | ||
77 | /** | |
78 | * An 8MB buffer where we'll store the de-mangled samples. | |
00910580 UH |
79 | * LA8: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. |
80 | * LA16: Each sample is 2 bytes, MSB is channel 15, LSB is channel 0. | |
b908f067 UH |
81 | */ |
82 | uint8_t *final_buf; | |
83 | ||
84 | /** | |
00910580 | 85 | * Trigger pattern. |
ba7dd8bb | 86 | * A 1 bit matches a high signal, 0 matches a low signal on a channel. |
00910580 UH |
87 | * |
88 | * If the resp. 'trigger_edgemask' bit is set, 1 means "rising edge", | |
89 | * and 0 means "falling edge". | |
b908f067 | 90 | */ |
00910580 | 91 | uint16_t trigger_pattern; |
b908f067 UH |
92 | |
93 | /** | |
00910580 | 94 | * Trigger mask. |
b908f067 UH |
95 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". |
96 | */ | |
00910580 | 97 | uint16_t trigger_mask; |
b908f067 | 98 | |
00910580 UH |
99 | /** |
100 | * Trigger edge mask. | |
101 | * A 1 bit means "edge triggered", 0 means "state triggered". | |
102 | * | |
103 | * Edge triggering is only supported on LA16 (but not LA8). | |
104 | */ | |
105 | uint16_t trigger_edgemask; | |
b908f067 UH |
106 | |
107 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ | |
108 | int trigger_found; | |
109 | ||
b172c130 | 110 | /** Used for keeping track how much time has passed. */ |
00910580 | 111 | gint64 done; |
b908f067 UH |
112 | |
113 | /** Counter/index for the data block to be read. */ | |
114 | int block_counter; | |
115 | ||
b172c130 | 116 | /** The divcount value (determines the sample period). */ |
b908f067 | 117 | uint8_t divcount; |
74e5f12d | 118 | |
00910580 UH |
119 | /** This ChronoVu device's USB VID/PID. */ |
120 | uint16_t usb_vid; | |
74e5f12d | 121 | uint16_t usb_pid; |
00910580 UH |
122 | |
123 | /** Samplerates supported by this device. */ | |
124 | uint64_t samplerates[255]; | |
b908f067 UH |
125 | }; |
126 | ||
45e080b6 | 127 | /* protocol.c */ |
b172c130 | 128 | extern SR_PRIV const char *cv_channel_names[]; |
00910580 UH |
129 | extern const struct cv_profile cv_profiles[]; |
130 | SR_PRIV void cv_fill_samplerates_if_needed(const struct sr_dev_inst *sdi); | |
131 | SR_PRIV uint8_t cv_samplerate_to_divcount(const struct sr_dev_inst *sdi, | |
132 | uint64_t samplerate); | |
b172c130 | 133 | SR_PRIV int cv_write(struct dev_context *devc, uint8_t *buf, int size); |
aeff7fa2 | 134 | SR_PRIV int cv_convert_trigger(const struct sr_dev_inst *sdi); |
b172c130 UH |
135 | SR_PRIV int cv_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate); |
136 | SR_PRIV int cv_read_block(struct dev_context *devc); | |
695dc859 | 137 | SR_PRIV void cv_send_block_to_session_bus(const struct sr_dev_inst *sdi, int block); |
b908f067 UH |
138 | |
139 | #endif |