module uart_tb;
	reg clock;
	reg RSTB;
	reg power1, power2;

	wire gpio;
    wire [15:0] checkbits;
	wire [127:0] la_output;
	wire flash_csb;
	wire flash_clk;
	wire flash_io0;
	wire flash_io1;
//	wire [37:0] mprj_io;
	wire uart_tx;
	wire uart_loopback;
	wire SDO;

	assign checkbits = la_output[31:16];
//	assign uart_tx = la_output[6];

	always #12.5 clock <= (clock === 1'b0);

	initial begin
		clock = 0;
	end

	`ifdef ENABLE_SDF
		initial begin
			$sdf_annotate("../../../../sdf/DFFRAM.sdf", uut.DFFRAM_0 );
			$sdf_annotate("../../../../sdf/mgmt_core.sdf", uut.core);
		end
	`endif 

	initial begin
		$dumpfile("uart.vcd");
		$dumpvars(0, uart_tb);

		$display("Wait for UART o/p");
		repeat (20) begin
			repeat (10000) @(posedge clock);
            $display("+10000 cycles");
		end
        $display("%c[1;31m",27);
		`ifdef GL
			$display ("Monitor: Timeout, Test UART (GL) Failed");
		`else
			$display ("Monitor: Timeout, Test UART (RTL) Failed");
		`endif
		$display("%c[0m",27);
		$finish;
	end

	initial begin
		RSTB <= 1'b0;
		#1000;
		RSTB <= 1'b1;	    // Release reset
		#2000;
	end

	initial begin		// Power-up sequence
		power1 <= 1'b0;
		power2 <= 1'b0;
		#200;
		power1 <= 1'b1;
		#200;
		power2 <= 1'b1;
	end

	always @(checkbits) begin
		if(checkbits == 16'hA000) begin
			$display("UART Test started");
		end
		else if(checkbits == 16'hAB00) begin
			`ifdef GL
				$display("Monitor: Test UART (GL) passed");
			`else
				$display("Monitor: Test UART (RTL) passed");
			`endif
			$finish;
		end
	end

	wire VDD3V3;
	wire VDD1V8;
	wire VSS;

	assign VDD3V3 = power1;
	assign VDD1V8 = power2;
	assign VSS = 1'b0;
	
	mgmt_core_wrapper uut (
	`ifdef USE_POWER_PINS
		.VPWR		  (VDD1V8),
		.VGND		  (VSS),
	`endif
		.core_clk	  (clock),
		.core_rstn	  (RSTB),
        .debug_in(1'b0),
        .debug_mode(),
        .debug_oeb(),
        .debug_out(),
		.gpio_out_pad(gpio),
        .gpio_in_pad(1'b0),
        .gpio_inenb_pad(),
        .gpio_mode0_pad(),
        .gpio_mode1_pad(),
        .gpio_outenb_pad(),
		.la_output (la_output),
        .la_iena(),
        .la_input(128'b0),
        .la_oenb(),
		.flash_csb(flash_csb),
		.flash_clk(flash_clk),
		.flash_io0_oeb(),
		.flash_io1_oeb(),
		.flash_io2_oeb(),
		.flash_io3_oeb(),
		.flash_io0_do(flash_io0),
		.flash_io0_di(1'b0),
		.flash_io1_do(),
		.flash_io1_di(flash_io1),
		.flash_io2_do(),
		.flash_io2_di(1'b0),
        .flash_io3_do(),
		.flash_io3_di(1'b0),
        .mprj_adr_o(),
        .mprj_sel_o(),
		.mprj_dat_i(32'b0),
		.mprj_ack_i(1'b0),
		.mprj_cyc_o(),
        .mprj_stb_o(),
        .mprj_wb_iena(),
        .mprj_we_o(),
        .hk_dat_i(32'b0),
		.hk_ack_i(1'b0),
		.hk_cyc_o(),
		.hk_stb_o(),
		.ser_rx(1'b0),
		.ser_tx(uart_tx),
		.qspi_enabled(),
        .spi_csb(),
        .spi_enabled(),
        .spi_sck(),
        .spi_sdi(1'b0),
        .spi_sdo(),
        .spi_sdoenb(),
        .sram_ro_csb(),
        .sram_ro_clk(),
        .sram_ro_addr(8'b0),
        .sram_ro_data(),
        .trap(),
        .uart_enabled(),
        .irq(6'b0),
        .user_irq_ena()
	);

	spiflash #(
		.FILENAME("uart.hex")
	) spiflash (
		.csb(flash_csb),
		.clk(flash_clk),
		.io0(flash_io0),
		.io1(flash_io1),
		.io2(),			// not used
		.io3()			// not used
	);

	// Testbench UART
	tbuart tbuart (
		.ser_rx(uart_tx)
	);
		
endmodule