always_ff @(posedge clk or negedge reset_n)
        begin
        if (!reset_n)
            begin
            axi_state <= 0;
            axm_awvalid <= 0;
            axm_wvalid <= 0;
            axm_bready <= 0;
            axm_awaddr <= 0;
            axm_wdata <= 0;
            start <= 0;
            end
        else
            begin
            
            if (avs_write)
                begin
                if (!avs_address) axm_awaddr <= avs_writedata;
                else
                    begin
                    axm_wdata <= avs_writedata;
                    start <= 1'b1;
                    end
                end
    
            case (axi_state)
            2'd0:
                begin
                if (start)
                    begin
                    axm_awvalid <= 1'b1;
                    start <= 0;
                    axi_state <= 2'd1;
                    end
                end
            2'd1:
                begin
                if (axm_awready)
                    begin
                    axm_awvalid <= 0;
                    axm_wvalid <= 1'b1;
                    axi_state <= 2'd2;
                    end
                end
            2'd2:
                begin
                if (axm_wready)
                    begin
                    axm_wvalid <= 0;
                    axm_bready <= 1'b1;
                    axi_state <= 2'd3;
                    end
                end
            2'd3:
                begin
                if (axm_bvalid && axm_bid == axm_awid)
                    begin
                    axm_bready <= 0;
                    axi_state <= 0;
                    end
                end
            endcase

            end    
        end