tests: add minimal tests for controller axi4l

rtl/controller/tests/tb_controller_wrapper_axil.sv

@@ -0,0 +1,128 @@
+module tb_controller_wrapper_axil #(
+  parameter int unsigned DAC_DATA_WIDTH = 12,
+  parameter int unsigned ADDR_W = 16,
+  parameter int unsigned DATA_W = 32,
+  parameter int unsigned USER_W = 1
+)(
+  input  logic                 ctrl_clk,
+  input  logic                 rst,
+
+  input  logic [ADDR_W-1:0]   s_axil_awaddr,
+  input  logic [2:0]          s_axil_awprot,
+  input  logic                s_axil_awvalid,
+  output logic                s_axil_awready,
+
+  input  logic [DATA_W-1:0]   s_axil_wdata,
+  input  logic [DATA_W/8-1:0] s_axil_wstrb,
+  input  logic                s_axil_wvalid,
+  output logic                s_axil_wready,
+
+  output logic [1:0]          s_axil_bresp,
+  output logic                s_axil_bvalid,
+  input  logic                s_axil_bready,
+
+  input  logic [ADDR_W-1:0]   s_axil_araddr,
+  input  logic [2:0]          s_axil_arprot,
+  input  logic                s_axil_arvalid,
+  output logic                s_axil_arready,
+
+  output logic [DATA_W-1:0]   s_axil_rdata,
+  output logic [1:0]          s_axil_rresp,
+  output logic                s_axil_rvalid,
+  input  logic                s_axil_rready
+);
+
+  logic rst_n;
+  assign rst_n = ~rst;
+
+  logic dac_clk_in;
+  logic adc_clk_in;
+  assign dac_clk_in = ctrl_clk;
+  assign adc_clk_in = ctrl_clk;
+
+  logic finish;
+  assign finish = 1'b0;
+
+  axi4l_if #(
+    .ADDR_W(ADDR_W),
+    .DATA_W(DATA_W),
+    .USER_W(USER_W)
+  ) axil_bus (
+    .aclk(ctrl_clk),
+    .aresetn(rst_n)
+  );
+
+  axi4l_flat_to_if #(
+    .ADDR_W(ADDR_W),
+    .DATA_W(DATA_W),
+    .USER_W(USER_W)
+  ) u_flat_to_if (
+    .s_axil_awaddr (s_axil_awaddr),
+    .s_axil_awprot (s_axil_awprot),
+    .s_axil_awvalid(s_axil_awvalid),
+    .s_axil_awready(s_axil_awready),
+
+    .s_axil_wdata  (s_axil_wdata),
+    .s_axil_wstrb  (s_axil_wstrb),
+    .s_axil_wvalid (s_axil_wvalid),
+    .s_axil_wready (s_axil_wready),
+
+    .s_axil_bresp  (s_axil_bresp),
+    .s_axil_bvalid (s_axil_bvalid),
+    .s_axil_bready (s_axil_bready),
+
+    .s_axil_araddr (s_axil_araddr),
+    .s_axil_arprot (s_axil_arprot),
+    .s_axil_arvalid(s_axil_arvalid),
+    .s_axil_arready(s_axil_arready),
+
+    .s_axil_rdata  (s_axil_rdata),
+    .s_axil_rresp  (s_axil_rresp),
+    .s_axil_rvalid (s_axil_rvalid),
+    .s_axil_rready (s_axil_rready),
+
+    .m_axil(axil_bus)
+  );
+
+  logic [31:0]               adc_window_size;
+  logic [31:0]               dac_pulse_width;
+  logic [31:0]               dac_pulse_period;
+  logic [DAC_DATA_WIDTH-1:0] dac_pulse_height;
+  logic [15:0]               dac_pulse_num;
+  logic [31:0]               adc_pulse_period;
+  logic [15:0]               adc_pulse_num;
+  logic                      dac_start;
+  logic                      adc_start;
+  logic                      dac_rst;
+  logic                      adc_rst;
+
+  controller_wrapper_axil #(
+    .DAC_DATA_WIDTH(DAC_DATA_WIDTH),
+    .ADDR_W(ADDR_W),
+    .DATA_W(DATA_W),
+    .USER_W(USER_W)
+  ) dut (
+    .ctrl_clk(ctrl_clk),
+    .dac_clk_in(dac_clk_in),
+    .adc_clk_in(adc_clk_in),
+    .rst_n(rst_n),
+    .s_axil(axil_bus),
+
+    .finish(finish),
+    .adc_window_size(adc_window_size),
+
+    .dac_pulse_width(dac_pulse_width),
+    .dac_pulse_period(dac_pulse_period),
+    .dac_pulse_height(dac_pulse_height),
+    .dac_pulse_num(dac_pulse_num),
+
+    .adc_pulse_period(adc_pulse_period),
+    .adc_pulse_num(adc_pulse_num),
+
+    .dac_start(dac_start),
+    .adc_start(adc_start),
+    .dac_rst(dac_rst),
+    .adc_rst(adc_rst)
+  );
+
+endmodule

rtl/controller/tests/test_controller.py

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+import cocotb
+from cocotb.clock import Clock
+from cocotb.triggers import RisingEdge
+from cocotbext.axi import AxiLiteBus, AxiLiteMaster
+
+
+# register indexes from axi4l_reg_map_controller_pkg.sv
+REG_CONTROL = 0
+REG_DAC_WIDTH = 2
+REG_DAC_PERIOD = 3
+REG_DAC_PULSE_NUM = 4
+REG_DAC_PULSE_HEIGHT = 5
+REG_ADC_PERIOD = 6
+REG_WINDOW_SIZE = 7
+
+
+def reg_addr(reg_index: int) -> int:
+    # AXI-Lite usually uses byte addresses for 32-bit regs
+    return reg_index * 4
+
+
+class TB:
+    def __init__(self, dut):
+        self.dut = dut
+
+        cocotb.start_soon(Clock(dut.ctrl_clk, 10, units="ns").start())
+
+        self.axil = AxiLiteMaster(
+            AxiLiteBus.from_prefix(dut, "s_axil"),
+            dut.ctrl_clk,
+            dut.rst,
+        )
+
+    async def reset(self):
+        self.dut.rst.value = 1
+        for _ in range(5):
+            await RisingEdge(self.dut.ctrl_clk)
+
+        self.dut.rst.value = 0
+        for _ in range(5):
+            await RisingEdge(self.dut.ctrl_clk)
+
+
+@cocotb.test()
+async def simple_axil_write(dut):
+    tb = TB(dut)
+    await tb.reset()
+
+    # Простая запись в RW-регистр REG_DAC_WIDTH.
+    await tb.axil.write(reg_addr(REG_DAC_WIDTH), (0x0000_0123).to_bytes(4, "little"))
+
+    # Не обязательно, но удобно проверить, что запись прошла через AXI-Lite.
+    resp = await tb.axil.read(reg_addr(REG_DAC_WIDTH), 4)
+    value = int.from_bytes(bytes(resp.data), "little")
+    assert value == 0x0000_0123
+
+    # Пример W1S-записи в control: bit 3 = cfg_bus_valid pulse.
+    # Дальше уже можно проверять твою логику контроллера.
+    await tb.axil.write(reg_addr(REG_CONTROL), (1 << 3).to_bytes(4, "little"))
+
+    await RisingEdge(dut.ctrl_clk)