module isp_tb();

parameter IN_WIDTH    = 50;
parameter IN_HEIGHT   = 50;
parameter OFFSET_X    = 7;
parameter OFFSET_Y    = 3;
parameter OUT_WIDTH   = 30;
parameter OUT_HEIGHT  = 30;
parameter COLOR_DEPTH = 8;
parameter RAW_TYPE    = 3;

reg clk;
initial clk = 0;
always #20 clk <= ~clk;

reg[31:0] cnt_www;
reg reset;
initial begin
    reset = 1;
    cnt_www = 700;
    #500
    reset = 0;
    #5000000
    reset = 1;
    cnt_www = 2000;
    #500
    reset = 0;
end

reg [15:0] in_data[3];
wire [23:0]out_data;
reg in_valid;
wire out_valid;
reg in_ready;
wire out_ready;

reg[31:0] cnt_valid, cnt_ready;
integer i;
always @(posedge clk) begin
    if(reset) begin
        in_valid <= 0;
        in_ready <= 0;
        cnt_valid <= 10;
        cnt_ready <= 0;
        for(i=0;i<3;i=i+1) in_data[i] <= 0;
    end else begin
        cnt_valid <= cnt_valid+1;
        cnt_ready <= cnt_ready+1;
        if(cnt_ready==cnt_www)begin
            cnt_ready <= 0;
            in_ready <= ~in_ready;
        end
        if(cnt_valid==500)begin
            cnt_valid <= 200;
            in_valid <= ~in_valid;
        end
        if(in_valid && out_ready)begin
            in_data[0] <= in_data[0] + 1;
            for(i=1;i<3;i=i+1) in_data[i] <= in_data[i-1];
        end
    end
end

reg [23:0] data_out_temp[8192*5];
reg [31:0] now;
reg flag_ifdataerror;
always @(posedge clk) begin
    if(reset) begin
        flag_ifdataerror <= 0;
        if(cnt_www==700) for(i=0;i<(1<<32);i=i+1) data_out_temp[i] <= 0;
        now <= 0;
    end else if(out_valid && in_ready)begin
        now <= now + 1;
        if(cnt_www==700)begin
            data_out_temp[now] <= out_data;
        end else if(cnt_www==2000)begin
            flag_ifdataerror <= (data_out_temp[now] != out_data);
        end else flag_ifdataerror <= flag_ifdataerror;
    end
end

isp_nofifo
#(
    .IN_WIDTH    (IN_WIDTH    ),
    .IN_HEIGHT   (IN_HEIGHT   ),
    .OFFSET_X    (OFFSET_X    ),
    .OFFSET_Y    (OFFSET_Y    ),
    .OUT_WIDTH   (OUT_WIDTH   ),
    .OUT_HEIGHT  (OUT_HEIGHT  ),
    .COLOR_DEPTH (COLOR_DEPTH ),
    .RAW_TYPE    (RAW_TYPE    )
)
u_isp(
    .clk            (clk            ),
    .reset          (reset          ),
    .in_data        (in_data        ),
    .out_data       (out_data       ),
    .in_valid       (in_valid       ),
    .out_valid      (out_valid      ),
    .in_ready       (in_ready       ),
    .out_ready      (out_ready      ),
    .gain_red       (50       ),
    .gain_green     (50     ),
    .gain_blue      (50      ),
    .blender_enable (0 )
);


endmodule