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1 /*
2  * This file is part of the libsigrok project.
3  *
4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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 3 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, see <http://www.gnu.org/licenses/>.
19  */
20
21 #ifndef LIBSIGROK_HARDWARE_DREAMSOURCELAB_DSLOGIC_PROTOCOL_H
22 #define LIBSIGROK_HARDWARE_DREAMSOURCELAB_DSLOGIC_PROTOCOL_H
23
24 #include <glib.h>
25 #include <stdint.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <libusb.h>
29 #include <libsigrok/libsigrok.h>
30 #include "libsigrok-internal.h"
31
32 #define LOG_PREFIX "dreamsourcelab-dslogic"
33
34 #define USB_INTERFACE           0
35 #define USB_CONFIGURATION       1
36
37 #define MAX_RENUM_DELAY_MS      3000
38 #define NUM_SIMUL_TRANSFERS     32
39 #define MAX_EMPTY_TRANSFERS     (NUM_SIMUL_TRANSFERS * 2)
40
41 #define NUM_CHANNELS            16
42 #define NUM_TRIGGER_STAGES      16
43
44 #define DSLOGIC_REQUIRED_VERSION_MAJOR  1
45
46 /* 6 delay states of up to 256 clock ticks */
47 #define MAX_SAMPLE_DELAY        (6 * 256)
48
49 #define DSLOGIC_FPGA_FIRMWARE_5V "dreamsourcelab-dslogic-fpga-5v.fw"
50 #define DSLOGIC_FPGA_FIRMWARE_3V3 "dreamsourcelab-dslogic-fpga-3v3.fw"
51 #define DSCOPE_FPGA_FIRMWARE "dreamsourcelab-dscope-fpga.fw"
52 #define DSLOGIC_PRO_FPGA_FIRMWARE "dreamsourcelab-dslogic-pro-fpga.fw"
53 #define DSLOGIC_PLUS_FPGA_FIRMWARE "dreamsourcelab-dslogic-plus-fpga.fw"
54 #define DSLOGIC_BASIC_FPGA_FIRMWARE "dreamsourcelab-dslogic-basic-fpga.fw"
55
56 enum dslogic_operation_modes {
57         DS_OP_NORMAL,
58         DS_OP_INTERNAL_TEST,
59         DS_OP_EXTERNAL_TEST,
60         DS_OP_LOOPBACK_TEST,
61 };
62
63 enum dslogic_edge_modes {
64         DS_EDGE_RISING,
65         DS_EDGE_FALLING,
66 };
67
68 struct dslogic_version {
69         uint8_t major;
70         uint8_t minor;
71 };
72
73 struct dslogic_mode {
74         uint8_t flags;
75         uint8_t sample_delay_h;
76         uint8_t sample_delay_l;
77 };
78
79 struct dslogic_trigger_pos {
80         uint32_t check_id;
81         uint32_t real_pos;
82         uint32_t ram_saddr;
83         uint32_t remain_cnt_l;
84         uint32_t remain_cnt_h;
85         uint32_t status;
86         uint8_t first_block[488];
87 };
88
89 struct dslogic_profile {
90         uint16_t vid;
91         uint16_t pid;
92
93         const char *vendor;
94         const char *model;
95         const char *model_version;
96
97         const char *firmware;
98
99         uint32_t dev_caps;
100
101         const char *usb_manufacturer;
102         const char *usb_product;
103
104         /* Memory depth in bits. */
105         uint64_t mem_depth;
106 };
107
108 struct dev_context {
109         const struct dslogic_profile *profile;
110         /*
111          * Since we can't keep track of a DSLogic device after upgrading
112          * the firmware (it renumerates into a different device address
113          * after the upgrade) this is like a global lock. No device will open
114          * until a proper delay after the last device was upgraded.
115          */
116         int64_t fw_updated;
117
118         const uint64_t *samplerates;
119         int num_samplerates;
120
121         uint64_t cur_samplerate;
122         uint64_t limit_samples;
123         uint64_t capture_ratio;
124
125         gboolean acq_aborted;
126
127         unsigned int sent_samples;
128         int submitted_transfers;
129         int empty_transfer_count;
130
131         unsigned int num_transfers;
132         struct libusb_transfer **transfers;
133         struct sr_context *ctx;
134
135         uint16_t *deinterleave_buffer;
136
137         uint16_t mode;
138         uint32_t trigger_pos;
139         gboolean external_clock;
140         gboolean continuous_mode;
141         int clock_edge;
142         double cur_threshold;
143 };
144
145 SR_PRIV int dslogic_fpga_firmware_upload(const struct sr_dev_inst *sdi);
146 SR_PRIV int dslogic_set_voltage_threshold(const struct sr_dev_inst *sdi, double threshold);
147 SR_PRIV int dslogic_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di);
148 SR_PRIV struct dev_context *dslogic_dev_new(void);
149 SR_PRIV int dslogic_acquisition_start(const struct sr_dev_inst *sdi);
150 SR_PRIV int dslogic_acquisition_stop(struct sr_dev_inst *sdi);
151
152 #endif