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1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Tilman Sauerbeck <tilman@code-monkey.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 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 | ||
20 | #ifndef LIBSIGROK_HARDWARE_LECROY_LOGICSTUDIO_PROTOCOL_H | |
21 | #define LIBSIGROK_HARDWARE_LECROY_LOGICSTUDIO_PROTOCOL_H | |
22 | ||
23 | #include <stdint.h> | |
24 | #include <glib.h> | |
25 | #include <libsigrok/libsigrok.h> | |
26 | #include "libsigrok-internal.h" | |
27 | ||
28 | #define LOG_PREFIX "lecroy-logicstudio" | |
29 | ||
30 | #define SAMPLE_BUF_SIZE 40960u | |
31 | #define CONV_8TO16_BUF_SIZE 8192 | |
32 | #define INTR_BUF_SIZE 32 | |
33 | ||
34 | struct samplerate_info; | |
35 | ||
36 | /** Private, per-device-instance driver context. */ | |
37 | struct dev_context { | |
38 | struct libusb_transfer *intr_xfer; | |
39 | struct libusb_transfer *bulk_xfer; | |
40 | ||
41 | const struct samplerate_info *samplerate_info; | |
42 | ||
43 | /** | |
44 | * When the device is opened, this will point at a buffer | |
45 | * of SAMPLE_BUF_SIZE bytes. | |
46 | */ | |
47 | uint8_t *fetched_samples; | |
48 | ||
49 | /** | |
50 | * Used to convert 8 bit samples (8 channels) to 16 bit samples | |
51 | * (16 channels), thus only used in 8 channel mode. | |
52 | * Holds CONV_8TO16_BUF_SIZE bytes. | |
53 | */ | |
54 | uint16_t *conv8to16; | |
55 | ||
56 | int64_t fw_updated; /* Time of last FX2 firmware upload. */ | |
57 | ||
58 | /** The pre-trigger capture ratio in percent. */ | |
59 | uint64_t capture_ratio; | |
60 | ||
61 | uint64_t earliest_sample; | |
62 | uint64_t trigger_sample; | |
63 | ||
64 | /** The number of eight-channel groups enabled (either 1 or 2). */ | |
65 | uint32_t num_enabled_channel_groups; | |
66 | ||
67 | /** | |
68 | * The number of samples to acquire (in thousands). | |
69 | * This is not customizable, but depending on the number | |
70 | * of enabled channel groups. | |
71 | */ | |
72 | uint32_t num_thousand_samples; | |
73 | ||
74 | uint32_t total_received_sample_bytes; | |
75 | ||
76 | /** Mask of enabled channels. */ | |
77 | uint16_t channel_mask; | |
78 | ||
79 | uint16_t acquisition_id; | |
80 | ||
81 | gboolean want_trigger; | |
82 | gboolean abort_acquisition; | |
83 | ||
84 | /** | |
85 | * These two magic values are required in order to fix a sample | |
86 | * buffer corruption. Before the first acquisition is run, they | |
87 | * need to be set to 0. | |
88 | */ | |
89 | uint8_t magic_arm_trigger; | |
90 | uint8_t magic_fetch_samples; | |
91 | ||
92 | /** | |
93 | * Buffer for interrupt transfers (acquisition state notifications). | |
94 | */ | |
95 | uint8_t intr_buf[INTR_BUF_SIZE]; | |
96 | }; | |
97 | ||
98 | SR_PRIV void lls_update_channel_mask(const struct sr_dev_inst *sdi); | |
99 | ||
100 | SR_PRIV int lls_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate); | |
101 | SR_PRIV uint64_t lls_get_samplerate(const struct sr_dev_inst *sdi); | |
102 | ||
103 | SR_PRIV int lls_setup_acquisition(const struct sr_dev_inst *sdi); | |
104 | SR_PRIV int lls_start_acquisition(const struct sr_dev_inst *sdi); | |
105 | SR_PRIV int lls_stop_acquisition(const struct sr_dev_inst *sdi); | |
106 | ||
107 | #endif |