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ov7670_controller.v

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+
+module ov7670_controller  ( 
+            input       clk,            // 25MHz input clk
+            inout       ov7670_sda,
+            output      ov7670_scl,    
+            input       resend,
+            output      config_finished,
+            output      ov7670_pwdn,
+            output      ov7670_reset,
+            output      ov7670_mclk );
+
+//--------------wires and registers----------------------
+   
+wire [15:0] command;
+wire finished;
+wire taken;
+
+
+localparam CAMERA_ADDR = 8'h42; // or 8'h21
+
+//------------controls of camera-------------------------
+
+assign ov7670_reset = 1'b1;                   // Normal mode
+assign ov7670_pwdn  = 1'b0;                   // Power device up
+assign ov7670_mclk  = clk;
+assign config_finished = finished;
+
+//-----------sub modules---------------------------------
+i2c_sender i2c_sender ( 
+            .clk(clk),            
+            .ov7670_sda(ov7670_sda),
+            .ov7670_scl(ov7670_scl),
+            .taken(taken),
+            .send(~finished),
+            .id(CAMERA_ADDR),
+            .register(command[15:8]),
+            .value(command[7:0]) );
+
+ov7670_registers ov7670_registers (
+            .clk(clk),      
+            .resend(resend),   
+            .advance(taken),  
+            .command(command), 
+            .finished(finished) );
+endmodule