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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.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 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 | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA8_PROTOCOL_H | |
22 | #define LIBSIGROK_HARDWARE_CHRONOVU_LA8_PROTOCOL_H | |
23 | ||
24 | #include <glib.h> | |
25 | #include <ftdi.h> | |
26 | #include <stdint.h> | |
27 | #include "libsigrok.h" | |
28 | #include "libsigrok-internal.h" | |
29 | ||
30 | /* Message logging helpers with subsystem-specific prefix string. */ | |
31 | #define LOG_PREFIX "la8: " | |
32 | #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args) | |
33 | #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args) | |
34 | #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args) | |
35 | #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args) | |
36 | #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args) | |
37 | #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args) | |
38 | ||
39 | #define USB_VENDOR_ID 0x0403 | |
40 | #define USB_DESCRIPTION "ChronoVu LA8" | |
41 | #define USB_VENDOR_NAME "ChronoVu" | |
42 | #define USB_MODEL_NAME "LA8" | |
43 | #define USB_MODEL_VERSION "" | |
44 | ||
45 | #define NUM_PROBES 8 | |
46 | #define TRIGGER_TYPE "01" | |
47 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
48 | #define MIN_NUM_SAMPLES 1 | |
49 | ||
50 | #define BS 4096 /* Block size */ | |
51 | #define NUM_BLOCKS 2048 /* Number of blocks */ | |
52 | ||
53 | /* Private, per-device-instance driver context. */ | |
54 | struct dev_context { | |
55 | /** FTDI device context (used by libftdi). */ | |
56 | struct ftdi_context *ftdic; | |
57 | ||
58 | /** The currently configured samplerate of the device. */ | |
59 | uint64_t cur_samplerate; | |
60 | ||
61 | /** The current sampling limit (in ms). */ | |
62 | uint64_t limit_msec; | |
63 | ||
64 | /** The current sampling limit (in number of samples). */ | |
65 | uint64_t limit_samples; | |
66 | ||
67 | void *cb_data; | |
68 | ||
69 | /** | |
70 | * A buffer containing some (mangled) samples from the device. | |
71 | * Format: Pretty mangled-up (due to hardware reasons), see code. | |
72 | */ | |
73 | uint8_t mangled_buf[BS]; | |
74 | ||
75 | /** | |
76 | * An 8MB buffer where we'll store the de-mangled samples. | |
77 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
78 | */ | |
79 | uint8_t *final_buf; | |
80 | ||
81 | /** | |
82 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
83 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
84 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
85 | */ | |
86 | uint8_t trigger_pattern; | |
87 | ||
88 | /** | |
89 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
90 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
91 | */ | |
92 | uint8_t trigger_mask; | |
93 | ||
94 | /** Time (in seconds) before the trigger times out. */ | |
95 | uint64_t trigger_timeout; | |
96 | ||
97 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ | |
98 | int trigger_found; | |
99 | ||
100 | /** TODO */ | |
101 | time_t done; | |
102 | ||
103 | /** Counter/index for the data block to be read. */ | |
104 | int block_counter; | |
105 | ||
106 | /** The divcount value (determines the sample period) for the LA8. */ | |
107 | uint8_t divcount; | |
108 | ||
109 | /** This ChronoVu LA8's USB PID (multiple versions exist). */ | |
110 | uint16_t usb_pid; | |
111 | }; | |
112 | ||
113 | /* protocol.c */ | |
114 | extern const int32_t chronovu_la8_hwcaps[]; | |
115 | extern uint64_t chronovu_la8_samplerates[]; | |
116 | extern SR_PRIV const char *chronovu_la8_probe_names[]; | |
117 | SR_PRIV void fill_supported_samplerates_if_needed(void); | |
118 | SR_PRIV int is_valid_samplerate(uint64_t samplerate); | |
119 | SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate); | |
120 | SR_PRIV int la8_write(struct dev_context *devc, uint8_t *buf, int size); | |
121 | SR_PRIV int la8_read(struct dev_context *devc, uint8_t *buf, int size); | |
122 | SR_PRIV int la8_close(struct dev_context *devc); | |
123 | SR_PRIV int la8_close_usb_reset_sequencer(struct dev_context *devc); | |
124 | SR_PRIV int la8_reset(struct dev_context *devc); | |
125 | SR_PRIV int configure_probes(const struct sr_dev_inst *sdi); | |
126 | SR_PRIV int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate); | |
127 | SR_PRIV int la8_read_block(struct dev_context *devc); | |
128 | SR_PRIV void send_block_to_session_bus(struct dev_context *devc, int block); | |
129 | ||
130 | #endif |