src/hardware/gwinstek-gds-800/protocol.h

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2015 Martin Lederhilger <martin.lederhilger@gmx.at>
   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_GWINSTEK_GDS_800_PROTOCOL_H
  21 #define LIBSIGROK_HARDWARE_GWINSTEK_GDS_800_PROTOCOL_H
  22
  23 #include <stdint.h>
  24 #include <glib.h>
  25 #include <libsigrok/libsigrok.h>
  26 #include "libsigrok-internal.h"
  27 #include "scpi.h"
  28
  29 #define LOG_PREFIX "gwinstek-gds-800"
  30
  31 #define MAX_SAMPLES 125000
  32 #define MAX_RCV_BUFFER_SIZE (MAX_SAMPLES * 2)
  33
  34 enum gds_state
  35 {
  36         START_ACQUISITION,
  37         START_TRANSFER_OF_CHANNEL_DATA,
  38         WAIT_FOR_TRANSFER_OF_BEGIN_TRANSMISSION_COMPLETE,
  39         WAIT_FOR_TRANSFER_OF_DATA_SIZE_DIGIT_COMPLETE,
  40         WAIT_FOR_TRANSFER_OF_DATA_SIZE_COMPLETE,
  41         WAIT_FOR_TRANSFER_OF_SAMPLE_RATE_COMPLETE,
  42         WAIT_FOR_TRANSFER_OF_CHANNEL_INDICATOR_COMPLETE,
  43         WAIT_FOR_TRANSFER_OF_RESERVED_DATA_COMPLETE,
  44         WAIT_FOR_TRANSFER_OF_CHANNEL_DATA_COMPLETE,
  45 };
  46
  47 struct dev_context {
  48         enum gds_state state;
  49         uint64_t cur_acq_frame;
  50         uint64_t frame_limit;
  51         int cur_acq_channel;
  52         int cur_rcv_buffer_position;
  53         char rcv_buffer[MAX_RCV_BUFFER_SIZE];
  54         int data_size_digits;
  55         int data_size;
  56         float sample_rate;
  57         gboolean df_started;
  58 };
  59
  60 SR_PRIV int gwinstek_gds_800_receive_data(int fd, int revents, void *cb_data);
  61
  62 #endif