2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Marc Schink <sigrok-dev@marcschink.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 3 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, see <http://www.gnu.org/licenses/>.
20 #ifndef LIBSIGROK_HARDWARE_IKALOGIC_SCANALOGIC2_PROTOCOL_H
21 #define LIBSIGROK_HARDWARE_IKALOGIC_SCANALOGIC2_PROTOCOL_H
27 #include <libsigrok/libsigrok.h>
28 #include "libsigrok-internal.h"
30 #define LOG_PREFIX "ikalogic-scanalogic2"
32 #define VENDOR_NAME "IKALOGIC"
33 #define MODEL_NAME "Scanalogic-2"
35 #define USB_VID_PID "20a0.4123"
36 #define USB_INTERFACE 0
37 #define USB_TIMEOUT_MS (5 * 1000)
39 #define USB_REQUEST_TYPE_IN (LIBUSB_REQUEST_TYPE_CLASS | \
40 LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_IN)
42 #define USB_REQUEST_TYPE_OUT (LIBUSB_REQUEST_TYPE_CLASS | \
43 LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_OUT)
45 #define USB_HID_GET_REPORT 0x01
46 #define USB_HID_SET_REPORT 0x09
47 #define USB_HID_REPORT_TYPE_FEATURE 0x300
49 #define NUM_SAMPLERATES 11
50 #define NUM_CHANNELS 4
53 * Number of sample bytes and samples the device can acquire. Note that the
54 * vendor software can acquire 32736 sample bytes only but the device is capable
55 * to acquire up to 32766 sample bytes.
57 #define MAX_DEV_SAMPLE_BYTES 32766
58 #define MAX_DEV_SAMPLES (MAX_INT_SAMPLE_BYTES * 8)
60 /* Number of sample bytes and samples the driver can acquire. */
61 #define MAX_SAMPLE_BYTES (MAX_DEV_SAMPLE_BYTES - 1)
62 #define MAX_SAMPLES (MAX_SAMPLE_BYTES * 8)
64 /* Maximum time that the trigger can be delayed in milliseconds. */
65 #define MAX_AFTER_TRIGGER_DELAY 65000
67 #define PACKET_LENGTH 128
69 /* Number of sample bytes per packet where a sample byte contains 8 samples. */
70 #define PACKET_NUM_SAMPLE_BYTES 124
72 /* Number of samples per packet. */
73 #define PACKET_NUM_SAMPLES (PACKET_NUM_SAMPLE_BYTES * 8)
75 #define DEFAULT_SAMPLERATE SR_KHZ(1.25)
78 * Time interval between the last status of available data received and the
79 * moment when the next status request will be sent in microseconds.
81 #define WAIT_DATA_READY_INTERVAL 1500000
83 #define CMD_SAMPLE 0x01
84 #define CMD_RESET 0x02
88 #define TRIGGER_CHANNEL_ALL 0x00
89 #define TRIGGER_CHANNEL_0 0x01
90 #define TRIGGER_CHANNEL_1 0x02
91 #define TRIGGER_CHANNEL_2 0x03
93 #define TRIGGER_TYPE_NEGEDGE 0x00
94 #define TRIGGER_TYPE_POSEDGE 0x01
95 #define TRIGGER_TYPE_ANYEDGE 0x02
96 #define TRIGGER_TYPE_NONE 0x03
98 #define STATUS_DATA_READY 0x60
99 #define STATUS_WAITING_FOR_TRIGGER 0x61
100 #define STATUS_SAMPLING 0x62
101 #define STATUS_DEVICE_READY 0x63
104 /* Serial number of the device. */
107 /* Major version of the firmware. */
108 uint8_t fw_ver_major;
110 /* Minor version of the firmware. */
111 uint8_t fw_ver_minor;
117 STATE_WAIT_DATA_READY,
119 STATE_RESET_AND_IDLE,
120 STATE_WAIT_DEVICE_READY
123 /** Private, per-device-instance driver context. */
125 /* Current selected samplerate. */
128 /* Device specific identifier for the current samplerate. */
129 uint8_t samplerate_id;
131 /* Current sampling limit. */
132 uint64_t limit_samples;
134 /* Calculated number of pre-trigger samples. */
135 uint64_t pre_trigger_samples;
137 /* Number of pre- and post-trigger sample bytes to acquire. */
138 uint16_t pre_trigger_bytes;
139 uint16_t post_trigger_bytes;
141 /* Device specific settings for the trigger. */
142 uint8_t trigger_channel;
143 uint8_t trigger_type;
145 unsigned int capture_ratio;
147 /* Time that the trigger will be delayed in milliseconds. */
148 uint16_t after_trigger_delay;
152 /* Array to provide an index based access to all channels. */
153 const struct sr_channel *channels[NUM_CHANNELS];
155 struct libusb_transfer *xfer_in, *xfer_out;
158 * Buffer to store setup and payload data for incoming and outgoing
161 uint8_t xfer_buf_in[LIBUSB_CONTROL_SETUP_SIZE + PACKET_LENGTH];
162 uint8_t xfer_buf_out[LIBUSB_CONTROL_SETUP_SIZE + PACKET_LENGTH];
164 /* Pointers to the payload of incoming and outgoing transfers. */
165 uint8_t *xfer_data_in, *xfer_data_out;
167 /* Current state of the state machine */
170 /* Next state of the state machine. */
171 unsigned int next_state;
174 * Locking variable to ensure that no status about available data will
175 * be requested until the last status was received.
177 gboolean wait_data_ready_locked;
180 * Time when the last response about the status of available data was
183 int64_t wait_data_ready_time;
186 * Indicates that stopping of the acquisition is currently in progress.
188 gboolean stopping_in_progress;
191 * Buffer which contains the samples received from the device for each
192 * channel except the last one. The samples of the last channel will be
193 * processed directly after they will be received.
195 uint8_t sample_buffer[NUM_CHANNELS - 1][MAX_DEV_SAMPLE_BYTES];
197 /* Expected number of sample packets for each channel. */
198 uint16_t num_sample_packets;
200 /* Number of samples already processed. */
201 uint64_t samples_processed;
203 /* Sample packet number that is currently processed. */
204 uint16_t sample_packet;
206 /* Channel number that is currently processed. */
209 /* Number of enabled channels. */
210 unsigned int num_enabled_channels;
212 /* Array to provide a sequential access to all enabled channel indices. */
213 uint8_t channel_map[NUM_CHANNELS];
215 /* Indicates whether a transfer failed. */
216 gboolean transfer_error;
219 SR_PRIV int ikalogic_scanalogic2_receive_data(int fd, int revents, void *cb_data);
220 SR_PRIV void LIBUSB_CALL sl2_receive_transfer_in(struct libusb_transfer *transfer);
221 SR_PRIV void LIBUSB_CALL sl2_receive_transfer_out(struct libusb_transfer *transfer);
222 SR_PRIV int sl2_set_samplerate(const struct sr_dev_inst *sdi,
223 uint64_t samplerate);
224 SR_PRIV int sl2_set_limit_samples(const struct sr_dev_inst *sdi,
225 uint64_t limit_samples);
226 SR_PRIV int sl2_convert_trigger(const struct sr_dev_inst *sdi);
227 SR_PRIV int sl2_set_capture_ratio(const struct sr_dev_inst *sdi,
228 uint64_t capture_ratio);
229 SR_PRIV int sl2_set_after_trigger_delay(const struct sr_dev_inst *sdi,
230 uint64_t after_trigger_delay);
231 SR_PRIV void sl2_calculate_trigger_samples(const struct sr_dev_inst *sdi);
232 SR_PRIV int sl2_get_device_info(struct sr_usb_dev_inst usb,
233 struct device_info *dev_info);
234 SR_PRIV int sl2_transfer_in(libusb_device_handle *dev_handle, uint8_t *data);
235 SR_PRIV int sl2_transfer_out(libusb_device_handle *dev_handle, uint8_t *data);