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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2019 Vitaliy Vorobyov | |
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_SYSCLK_SLA5032_PROTOCOL_H | |
21 | #define LIBSIGROK_HARDWARE_SYSCLK_SLA5032_PROTOCOL_H | |
22 | ||
23 | #include <stdint.h> | |
24 | #include <libusb.h> | |
25 | #include <glib.h> | |
26 | #include <libsigrok/libsigrok.h> | |
27 | #include <libsigrok-internal.h> | |
28 | ||
29 | #define LOG_PREFIX "sysclk-sla5032" | |
30 | ||
31 | /* Maximum configurable sample count limit. */ | |
32 | #define MAX_LIMIT_SAMPLES (64 * 1024 * 1024) | |
33 | #define MIN_LIMIT_SAMPLES 512 | |
34 | ||
35 | /* USB vendor and product IDs. */ | |
36 | enum { | |
37 | USB_VID_SYSCLK = 0x2961, | |
38 | USB_PID_SLA5032 = 0x66B0, | |
39 | }; | |
40 | ||
41 | /* USB device characteristics. */ | |
42 | enum { | |
43 | USB_CONFIG = 1, | |
44 | USB_INTERFACE = 0, | |
45 | USB_CMD_TIMEOUT_MS = 5000, | |
46 | USB_REPLY_TIMEOUT_MS = 500000, | |
47 | USB_DATA_TIMEOUT_MS = 2000, | |
48 | }; | |
49 | ||
50 | /* USB device end points. */ | |
51 | enum usb_endpoint { | |
52 | EP_COMMAND = 4 | LIBUSB_ENDPOINT_OUT, | |
53 | EP_REPLY = 8 | LIBUSB_ENDPOINT_IN, | |
54 | EP_DATA = 6 | LIBUSB_ENDPOINT_IN, | |
55 | }; | |
56 | ||
57 | ||
58 | /* Common indicator for no or unknown FPGA config. */ | |
59 | enum { | |
60 | FPGA_NOCONF = -1, | |
61 | FPGA_CONF, | |
62 | }; | |
63 | ||
64 | /** Acquisition protocol states. */ | |
65 | enum protocol_state { | |
66 | /* idle states */ | |
67 | STATE_IDLE = 0, | |
68 | STATE_STATUS_WAIT, | |
69 | /* device command states */ | |
70 | STATE_START_CAPTURE, | |
71 | STATE_STOP_CAPTURE, | |
72 | STATE_READ_PREPARE, | |
73 | STATE_READ_FINISH, | |
74 | /* command followed by response */ | |
75 | STATE_EXPECT_RESPONSE = 1 << 3, | |
76 | STATE_STATUS_REQUEST = STATE_EXPECT_RESPONSE, | |
77 | STATE_LENGTH_REQUEST, | |
78 | STATE_READ_REQUEST, | |
79 | }; | |
80 | ||
81 | /** SLA5032 protocol command ID codes. */ | |
82 | enum command_id { | |
83 | CMD_INIT_FW_UPLOAD = 1, | |
84 | CMD_UPLOAD_FW_CHUNK = 2, | |
85 | CMD_READ_REG = 3, | |
86 | CMD_WRITE_REG = 4, | |
87 | CMD_READ_MEM = 5, | |
88 | CMD_READ_DATA = 7, | |
89 | }; | |
90 | ||
91 | struct dev_context { | |
92 | uint64_t samplerate; /* requested samplerate */ | |
93 | uint64_t limit_samples; /* requested capture length (samples) */ | |
94 | uint64_t capture_ratio; | |
95 | ||
96 | uint64_t channel_mask; /* bit mask of enabled channels */ | |
97 | uint64_t trigger_mask; /* trigger enable mask */ | |
98 | uint64_t trigger_edge_mask; /* trigger type mask */ | |
99 | uint64_t trigger_values; /* trigger level/slope bits */ | |
100 | ||
101 | struct soft_trigger_logic *stl; | |
102 | gboolean trigger_fired; | |
103 | ||
104 | int active_fpga_config; /* FPGA configuration index */ | |
105 | ||
106 | enum protocol_state state; /* async protocol state */ | |
107 | }; | |
108 | ||
109 | SR_PRIV int sla5032_start_acquisition(const struct sr_dev_inst *sdi); | |
110 | SR_PRIV int sla5032_apply_fpga_config(const struct sr_dev_inst *sdi); | |
111 | ||
112 | #endif |