update scaler and RAM

2024-05-11 21:53:35 +08:00
parent f3f01c1c51
commit c96e9b57b2
20 changed files with 1393 additions and 72 deletions
@@ -0,0 +1,67 @@
+`timescale 1ns/1ps
+
+// 三通道图像合成一个RGB图像
+module chanels_to_RGB #(
+    parameter IN_DEPTH = 12,        // 输入图像的色深
+    parameter OUT_DEPTH = 8         // 输出图像的色深
+) (
+    input clk,
+    input reset,
+
+    input in_en,
+    input [IN_DEPTH - 1:0] data_in [2:0], // 0:R 1:G 2:B
+
+    // 输出相关
+    input data_que;                                 // 数据请求
+    output reg out_en,
+    output reg [3 * OUT_DEPTH - 1:0] data_out
+);
+    reg [31:0] data_cal [2:0]; // 用于保存运算结果，防止溢出
+    reg fifo_en;
+    wire [3 * OUT_DEPTH - 1:0] fifo_in; // 输入fifo中缓存
+    wire fifo_empty;
+    // wire fifo_alempty;
+
+    always @(posedge clk or posedge reset) begin
+        if (reset) begin
+            // 初始化
+            out_en <= 0;
+            data_out <= 0;
+        end
+        else begin
+            if (in_en) begin
+                data_cal[0] <= data_in[0] * OUT_DEPTH / IN_DEPTH;
+                data_cal[1] <= data_in[1] * OUT_DEPTH / IN_DEPTH;
+                data_cal[2] <= data_in[2] * OUT_DEPTH / IN_DEPTH;
+
+                fifo_in <= {data_cal[0][OUT_DEPTH - 1:0], data_cal[1][OUT_DEPTH - 1:0],data_cal[2][OUT_DEPTH - 1:0]};
+                // data_out <= {data_cal[0][OUT_DEPTH - 1:0], data_cal[1][OUT_DEPTH - 1:0],data_cal[2][OUT_DEPTH - 1:0]};
+            end
+            fifo_en <= in_en;
+        end
+    end
+
+    // 存在数据请求且FIFO不为空时，才发送数据
+    assign out_en <= (data_que && !fifo_empty) ? 1 : 0;
+
+    async_fifo #(
+        .DSIZE(3 * OUT_DEPTH),
+        .ASIZE(128),
+    ) RGB_FIFO (
+        .wclk(clk),
+        .rclk(clk),
+        .wrst_n(reset),
+        .rrst_n(reset),
+
+        .winc(fifo_en),
+        .wdata(fifo_in),
+        // .wfull(),
+        // .awfull(),
+        
+        // .arempty(fifo_alempty)
+        .rempty(fifo_empty),
+        .rdata(data_out),
+        .rinc(out_en)
+    );
+
+endmodule