2 * This file is part of the libsigrok project.
4 * Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de>
5 * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
6 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
7 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #ifndef LIBSIGROK_HARDWARE_KINGST_LA2016_PROTOCOL_H
24 #define LIBSIGROK_HARDWARE_KINGST_LA2016_PROTOCOL_H
26 #include <libsigrok/libsigrok.h>
29 #define LOG_PREFIX "kingst-la2016"
31 #define LA2016_VID 0x77a1
32 #define LA2016_PID 0x01a2
33 #define LA2016_IPRODUCT_INDEX 2
34 #define USB_INTERFACE 0
35 #define USB_CONFIGURATION 1
36 #define USB_EP_FPGA_BITSTREAM 2
37 #define USB_EP_CAPTURE_DATA 6
40 * On Windows sigrok uses WinUSB RAW_IO policy which requires the
41 * USB transfer buffer size to be a multiple of the endpoint max packet
42 * size, which is 512 bytes in this case. Also, the maximum allowed size
43 * of the transfer buffer is normally read from WinUSB_GetPipePolicy API
44 * but libusb does not expose this function. Typically, max size is 2MB.
46 #define LA2016_EP6_PKTSZ 512 /* Max packet size of USB endpoint 6. */
47 #define LA2016_USB_BUFSZ (256 * 2 * LA2016_EP6_PKTSZ) /* 256KiB buffer. */
49 /* USB communication timeout during regular operation. */
50 #define DEFAULT_TIMEOUT_MS 200
53 * Check for MCU firmware to take effect after upload. Check the device
54 * presence for a maximum period of time, delay between checks in that
55 * phase. Allow for the device to vanish after upload and before checks,
56 * to not mistake its earlier incarnation for the successful operation
57 * of the most recently loaded firmware.
59 #define RENUM_CHECK_PERIOD_MS 3000
60 #define RENUM_GONE_DELAY_MS 1800
61 #define RENUM_POLL_INTERVAL_MS 200
64 * The device expects some zero padding to follow the content of the
65 * file which contains the FPGA bitstream. Specify the chunk size here.
67 #define LA2016_EP2_PADDING 2048
69 #define LA2016_THR_VOLTAGE_MIN 0.40
70 #define LA2016_THR_VOLTAGE_MAX 4.00
72 #define LA2016_NUM_SAMPLES_MIN (UINT64_C(256))
73 #define LA2016_NUM_SAMPLES_MAX (UINT64_C(10 * 1000 * 1000 * 1000))
75 /* Maximum device capabilities. May differ between models. */
76 #define MAX_SAMPLE_RATE_LA2016 SR_MHZ(200)
77 #define MAX_SAMPLE_RATE_LA1016 SR_MHZ(100)
78 #define MIN_SAMPLE_RATE_LA2016 SR_KHZ(10)
79 #define MAX_PWM_FREQ SR_MHZ(20)
80 #define PWM_CLOCK SR_MHZ(200) /* 200MHz for both LA2016 and LA1016 */
83 * What is the origin and motivation of that 128Mi literal? What is its
84 * unit? How does it relate to a device's hardware capabilities? How to
85 * map the 1GiB of RAM of an LA2016 (at 16 channels) to the 128Mi value?
86 * It cannot be sample count. Is it memory size in bytes perhaps?
88 #define LA2016_PRE_MEM_LIMIT_BASE (128 * 1024 * 1024)
90 #define LA2016_NUM_PWMCH_MAX 2
92 #define LA2016_CONVBUFFER_SIZE (4 * 1024 * 1024)
94 struct pwm_setting_dev {
103 uint32_t high_or_falling;
106 struct capture_info {
107 uint32_t n_rep_packets;
108 uint32_t n_rep_packets_before_trigger;
112 #define NUM_PACKETS_IN_CHUNK 5
113 #define TRANSFER_PACKET_LENGTH 16
122 uint64_t fw_uploaded; /* Timestamp of most recent FW upload. */
124 /* User specified parameters. */
125 struct pwm_setting pwm_setting[LA2016_NUM_PWMCH_MAX];
126 size_t threshold_voltage_idx;
127 float threshold_voltage;
128 uint64_t max_samplerate;
129 uint64_t cur_samplerate;
130 struct sr_sw_limits sw_limits;
131 uint64_t capture_ratio;
133 /* Internal acquisition and download state. */
134 gboolean trigger_involved;
135 gboolean completion_seen;
136 gboolean download_finished;
137 struct capture_info info;
138 uint32_t n_transfer_packets_to_read; /* each with 5 acq packets */
139 uint32_t n_bytes_to_read;
140 uint32_t n_reps_until_trigger;
141 gboolean trigger_marked;
142 uint64_t total_samples;
145 struct feed_queue_logic *feed_queue;
146 struct libusb_transfer *transfer;
149 SR_PRIV int la2016_upload_firmware(struct sr_context *sr_ctx,
150 libusb_device *dev, uint16_t product_id);
151 SR_PRIV int la2016_setup_acquisition(const struct sr_dev_inst *sdi);
152 SR_PRIV int la2016_start_acquisition(const struct sr_dev_inst *sdi);
153 SR_PRIV int la2016_abort_acquisition(const struct sr_dev_inst *sdi);
154 SR_PRIV int la2016_receive_data(int fd, int revents, void *cb_data);
155 SR_PRIV int la2016_init_device(const struct sr_dev_inst *sdi);
156 SR_PRIV int la2016_deinit_device(const struct sr_dev_inst *sdi);