simulation module for LWIR sensor

    parameter DATA_FILE =         "/data_ssd/nc393/elphel393/fpga-elphel/x393/input_data/pattern_160_120_14.dat",  //

    parameter WINDOW_WIDTH    =    160,  //

    parameter WINDOW_HEIGHT   =    120,  //

    parameter LWIR_GPIO_IN    = 4'b0000,

    parameter TELEMETRY       =      1,  // 0 - disabled, 1 - as header, 2 - as footer

    parameter FRAME_PERIOD    = 946969,  // 26.4 fps @25 MHz

    parameter FRAME_DELAY     =    100,  // mclk period to start first frame 1

    parameter MS_PERIOD       =     25   // ahould actually be 25000  

)(

    input          mclk,

    input          nrst,

    input          sck,

    input          ncs,

    output         miso,

    input          mrst,  // active low 

    input          pwdn,  // active low

    input          spi_clk,

    input          spi_cs,

    output         spi_miso,

    input          spi_mosi,

    inout          gpio0,

    inout          gpio1,

    inout          gpio2,

    inout          gpio3, // may be used as segment sync (ready)

    input          i2c_scl,

    inout          i2c_sda,

    output         mipi_dp,   // not implemented

    output         mipi_dn,   // not implemented

    output         mipi_clkp, // not implemented

    output         mipi_clkn, // not implemented

    // telemetry data

    input   [15:0] telemetry_rev,

    input   [31:0] telemetry_status,

    localparam FRAMES =           2; // 2 frames in a ping-pong buffer 

    localparam FRAME_WORDS =     FRAME_SEGMENTS * (SEGMENT_PACKETS + ((TELEMETRY>0)?1 : 0)) * PACKET_WORDS;

    wire mrst = !nrst;

    wire rst = !mrst;

    reg  [OUT_BITS-1:0] sensor_data[0 : WINDOW_WIDTH * WINDOW_HEIGHT - 1]; // SuppressThisWarning VEditor - Will be assigned by $readmem

    reg  [OUT_BITS-1:0] packed_data[0: FRAMES * FRAME_WORDS -1];

//    wire            [ 2:0] copy_segment;

//946,969 '0xe7319'

      assign mipi_dp = 'bz;

      assign mipi_dn = 'bz;

      assign mipi_clkp = 'bz;

      assign mipi_clkn = 'bz;

      assign gpio0 = LWIR_GPIO_IN[0]?'bz: 0;

      assign gpio1 = LWIR_GPIO_IN[1]?'bz: 0;

      assign gpio2 = LWIR_GPIO_IN[2]?'bz: 0;

      assign gpio3 = LWIR_GPIO_IN[3]?'bz: 0;

      assign i2c_sda = 'bz;

//      assign copy_done =           copy_run && copy_crc &&((TELEMETRY==0) ? (copy_packet== (FRAME_PACKETS -1)) : (FRAME_PACKETS + 3));

      assign copy_done =           copy_run && copy_crc && (copy_packet== (FRAME_PACKETS_FULL -1));

      assign copy_packet_full =    (copy_packet < FRAME_PACKETS)?(copy_packet + ((TELEMETRY == 1) ? 4 : 0)):(copy_packet - ((TELEMETRY == 1)?FRAME_PACKETS: 0)) ;

$readmemh(DATA_FILE,sensor_data,0);

end

always @ (posedge mclk) begin

    if (mrst || (ms_cntr == 0)) ms_cntr <= MS_PERIOD -1;

    if (rst || (ms_cntr == 0)) ms_cntr <= MS_PERIOD -1;

    else                        ms_cntr <=  ms_cntr - 1;

    if      (mrst)           time_ms <= 0;

    if      (rst)           time_ms <= 0;

    else if ((ms_cntr == 0)) time_ms <=  time_ms + 1;

    //restarting frames

    if      (mrst)        frame_dly_cntr <= FRAME_DELAY;

    if      (rst)        frame_dly_cntr <= FRAME_DELAY;

    else if (frame_start) frame_dly_cntr <= FRAME_PERIOD;

    else                  frame_dly_cntr <= frame_dly_cntr - 1;

    frame_start <= !mrst && (frame_dly_cntr == 0);

    frame_start <= !rst && (frame_dly_cntr == 0);

    if      (mrst)        frame_num <= 0;

    if      (rst)        frame_num <= 0;

    else if (frame_start) frame_num <=  frame_num + 1;

    if      (mrst)        copy_page <= 0;

    if      (rst)        copy_page <= 0;

    else if (frame_start) copy_page <= !copy_page;

    if      (mrst || copy_done) copy_run <= 0;

    if      (rst || copy_done) copy_run <= 0;

    else if (frame_start)       copy_run <= 1;

    copy_crc <= copy_word == (PACKET_WORDS - 1); 

end

    /* Instance template for module crc16_x16x12x5x0 */

    crc16_x16x12x5x0 crc16_x16x12x5x0_i (

        .clk    (mclk), // input

        .srst   (!copy_run || copy_crc), // input

    );

    /* Instance template for module simul_lwir160x120_telemetry */

    simul_lwir160x120_telemetry simul_lwir160x120_telemetry_i (

        .clk                       (mclk),                       // input

        .en                        (frame_start),                // input