2 * This file is part of the sigrok project.
4 * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de>
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.
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.
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
21 #ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA8_DRIVER_H
22 #define LIBSIGROK_HARDWARE_CHRONOVU_LA8_DRIVER_H
27 #include "libsigrok.h"
28 #include "libsigrok-internal.h"
30 #define USB_VENDOR_ID 0x0403
31 #define USB_DESCRIPTION "ChronoVu LA8"
32 #define USB_VENDOR_NAME "ChronoVu"
33 #define USB_MODEL_NAME "LA8"
34 #define USB_MODEL_VERSION ""
37 #define TRIGGER_TYPES "01"
38 #define SDRAM_SIZE (8 * 1024 * 1024)
39 #define MIN_NUM_SAMPLES 1
41 #define BS 4096 /* Block size */
42 #define NUM_BLOCKS 2048 /* Number of blocks */
44 /* Private, per-device-instance driver context. */
46 /** FTDI device context (used by libftdi). */
47 struct ftdi_context *ftdic;
49 /** The currently configured samplerate of the device. */
50 uint64_t cur_samplerate;
52 /** The current sampling limit (in ms). */
55 /** The current sampling limit (in number of samples). */
56 uint64_t limit_samples;
62 * A buffer containing some (mangled) samples from the device.
63 * Format: Pretty mangled-up (due to hardware reasons), see code.
65 uint8_t mangled_buf[BS];
68 * An 8MB buffer where we'll store the de-mangled samples.
69 * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0.
74 * Trigger pattern (MSB = channel 7, LSB = channel 0).
75 * A 1 bit matches a high signal, 0 matches a low signal on a probe.
76 * Only low/high triggers (but not e.g. rising/falling) are supported.
78 uint8_t trigger_pattern;
81 * Trigger mask (MSB = channel 7, LSB = channel 0).
82 * A 1 bit means "must match trigger_pattern", 0 means "don't care".
86 /** Time (in seconds) before the trigger times out. */
87 uint64_t trigger_timeout;
89 /** Tells us whether an SR_DF_TRIGGER packet was already sent. */
95 /** Counter/index for the data block to be read. */
98 /** The divcount value (determines the sample period) for the LA8. */
101 /** This ChronoVu LA8's USB PID (multiple versions exist). */
106 extern SR_PRIV uint64_t supported_samplerates[];
107 extern SR_PRIV const int hwcaps[];
108 extern SR_PRIV const char *probe_names[];
109 extern const struct sr_samplerates samplerates;
110 SR_PRIV void fill_supported_samplerates_if_needed(void);
111 SR_PRIV int is_valid_samplerate(uint64_t samplerate);
112 SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate);
113 SR_PRIV int la8_write(struct context *ctx, uint8_t *buf, int size);
114 SR_PRIV int la8_read(struct context *ctx, uint8_t *buf, int size);
115 SR_PRIV int la8_close(struct context *ctx);
116 SR_PRIV int la8_close_usb_reset_sequencer(struct context *ctx);
117 SR_PRIV int la8_reset(struct context *ctx);
118 SR_PRIV int configure_probes(struct context *ctx, const GSList *probes);
119 SR_PRIV int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate);
120 SR_PRIV int la8_read_block(struct context *ctx);
121 SR_PRIV void send_block_to_session_bus(struct context *ctx, int block);