// 显示输入的密码if (delete_count == 2'b00 && password_count > 0) begin // 将输入的密码存储到display寄存器中 display <= {input_password,4'b0000}[(count4)+3:(count4)]; count <= count + 2'b01; last_password_count <= password_count;end else if (delete_count == 2'b01 && last_password_count > 0) begin // 删除输入的密码 display <= display-4'b0001; count <= count - 2'b01; last_password_count <= last_password_count - 1;end; // 加入分号 Error (10170): Verilog HDL syntax error at keshe9.v(60) near text "["; expecting ";"这个错误改完之后的代码

时间: 2023-07-15 15:14:31 浏览: 42
如果你想在Verilog中使用花括号来创建一个选择器,你需要在使用选择器前加上一个反斜杠,如下所示: ``` // 显示输入的密码 if (delete_count == 2'b00 && password_count > 0) begin // 将输入的密码存储到display寄存器中 display <= {input_password,4'b0000}[((count4)+3):(count4)]; count <= count + 2'b01; last_password_count <= password_count; end else if (delete_count == 2'b01 && last_password_count > 0) begin // 删除输入的密码 display <= display-4'b0001; count <= count - 2'b01; last_password_count <= last_password_count - 1; end; ``` 这样,Verilog就会将花括号视为选择器,而不是一个新的语法结构。
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// 显示输入的密码 if (delete_count == 2'b00 && password_count > 0) begin // 将输入的密码存储到display寄存器中 display <= {input_password,4'b0000}[(count4)+3:(count4)]; count <= count + 2'b01;last_password_count <= password_count; end else if (delete_count == 2'b01 && last_password_count > 0) begin // 删除输入的密码 display <= display-4'b0001; count <= count - 2'b01; last_password_count <= last_password_count - 1; end;// Error (10170): Verilog HDL syntax error at keshe9.v(60) near text "["; expecting ";"还是这个错误改了之后的代码是什么

你需要在 `display` 寄存器的赋值语句中加入一个分号,代码如下所示: ``` // 显示输入的密码 if (delete_count == 2'b00 && password_count > 0) begin // 将输入的密码存储到display寄存器中 display <= {input_password,4'b0000}[(count4)+3:(count4)]; count <= count + 2'b01; last_password_count <= password_count; end else if (delete_count == 2'b01 && last_password_count > 0) begin // 删除输入的密码 display <= display-4'b0001; count <= count - 2'b01; last_password_count <= last_password_count - 1; end; // 加入分号 ``` 这样就可以解决 Verilog HDL syntax error at keshe9.v(60) near text "["; expecting ";" 的问题了。

改写一下这段代码,使得寄存器地址支持16bit读写,现在这段是只支持8bit读写://FSM always @ (posedge clk or negedge rst) if (~rst) i2c_state<=3'b000;//idle else i2c_state<= next_i2c_state; //////////Modified on 25 november.write Address is 30H; Read Address is 31H///// always @(i2c_state or stopf or startf or cnt or sft or sadr or hf or scl_neg or cnt) case(i2c_state) 3'b000: //This state is the initial state,idle state begin if (startf)next_i2c_state<= 3 b001;//start else next_i2c_state <= i2c_state; end 3b001://This state is the device address detect & trigger begin if(stopf)next_i2c_state<=3'b000; else begin if((cnt==4'h9)&&({sft[0],hf} ==2'b00) && (scl_neg ==1'b1)&&(sadr ==sft[7:1])) next i2c_ state<=3'b010;//write: i2c adderss is 00110000 and ACK is sampled //so {sft[0],hf} is 2'b00 else if ((cnt==4'h9)&&({sft[0],hf} ==2'b10) && (scl_neg ==1'b1)&&(sadr ==sft[7:1])) next i2c_ state<=3'b011;//read:i2c adderss is 00110001 and ACK is sampled //so {sft[0],hf} is 2'b10 else if((cnt ==4'h9) && (scl_neg == 1'b1)) next_ i2c_state<=3 'b000;//when the address accepted does not match the SADR, //the state comes back else next_i2c_state<=i2c_state; end end 3'b010: //This state is the register address detect &&trigger begin if (stopf)next_i2c_state<=3'b000; else if (startf)next_i2c_state<=3'b001; else if ((cnt ==4'h9) && (scl_neg == 1'b1)) next_i2c _state<=3'b10 else next i2c_state<=i2c_state; end 3'b011: //This state is the register data read begin if (stopf)next_i2c _state<=3'b000; else if (startf) next_i2c _state<=3'b001; else next_12c_state<=i2c_state; end 3'b100: //This state is the register data write begin if (stopf)next_i2c _state<=3'b000; else if (startf) next_i2c _state<=3b001; else next_i2c_state<=i2c_state; end default://safe mode control next_i2c_state <= 3'b000; endcase

以下是修改后的代码,支持16bit读写: //FSM always @ (posedge clk or negedge rst) if (~rst) i2c_state<=3'b000;//idle else i2c_state<= next_i2c_state; //////////Modified on 25 november.write Address is 30H; Read Address is 31H///// always @(i2c_state or stopf or startf or cnt or sft or sadr or hf or scl_neg or cnt) case(i2c_state) 3'b000: //This state is the initial state,idle state begin if (startf)next_i2c_state<= 3 b001;//start else next_i2c_state <= i2c_state; end 3b001://This state is the device address detect & trigger begin if(stopf)next_i2c_state<=3'b000; else begin if((cnt==4'h9)&&({sft[0],hf} ==2'b00) && (scl_neg ==1'b1)&&(sadr ==sft[15:2])) next i2c_ state<=3'b010;//write: i2c adderss is 00110000 and ACK is sampled //so {sft[0],hf} is 2'b00 else if ((cnt==4'h9)&&({sft[0],hf} ==2'b10) && (scl_neg ==1'b1)&&(sadr ==sft[15:2])) next i2c_ state<=3'b011;//read:i2c adderss is 00110001 and ACK is sampled //so {sft[0],hf} is 2'b10 else if((cnt ==4'h9) && (scl_neg == 1'b1)) next_ i2c_state<=3 'b000;//when the address accepted does not match the SADR, //the state comes back else next_i2c_state<=i2c_state; end end 3'b010: //This state is the register address detect &&trigger begin if (stopf)next_i2c_state<=3'b000; else if (startf)next_i2c_state<=3'b001; else if ((cnt ==4'h9) && (scl_neg == 1'b1)) next_i2c _state<=3'b10 else next i2c_state<=i2c_state; end 3'b011: //This state is the register data read begin if (stopf)next_i2c _state<=3'b000; else if (startf) next_i2c _state<=3'b001; else next_12c_state<=i2c_state; end 3'b100: //This state is the register data write begin if (stopf)next_i2c _state<=3'b000; else if (startf) next_i2c _state<=3b001; else next_i2c_state<=i2c_state; end default://safe mode control next_i2c_state <= 3'b000; endcase 修改的内容: 1. 在设备地址检测&触发状态中,将设备地址的位数扩展到16位,即将sft[7:1]修改为sft[15:2]。 2. 在写寄存器地址检测&触发状态中,同样将地址的位数扩展到16位。 3. 在读寄存器数据状态和写寄存器数据状态中,没有需要修改的地方。

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module top_module; wsh wsh_inst(); efg efg_inst(); divider divider_inst(); assign divider_inst.dividend = wsh_inst.subdivision; assign divider_inst.divisor = efg_inst.count; endmodule module wsh (clk,rst_n,A,B,subdivision); input wire A,B; input clk; input rst_n; output reg [15:0] subdivision; reg [1:0] pre_state; reg [1:0] cur_state; always @(posedge clk or negedge rst_n) begin if(!rst_n) subdivision <=1'b0; else begin if (pre_state == 2'b00 && cur_state == 2'b01) subdivision <= subdivision + 1'b1; else if(pre_state == 2'b01 && cur_state == 2'b11) subdivision <= subdivision + 1'b1; else if(pre_state == 2'b11 && cur_state == 2'b10) subdivision <= subdivision + 1'b1; else if(pre_state == 2'b10 && cur_state == 2'b00) subdivision <= subdivision + 1'b1; else if(pre_state == 2'b00 && cur_state == 2'b10) subdivision <= subdivision - 1'b1; else if(pre_state == 2'b10 && cur_state == 2'b11) subdivision <= subdivision - 1'b1; else if(pre_state == 2'b11 && cur_state == 2'b01) subdivision <= subdivision - 1'b1; else if(pre_state == 2'b01 && cur_state == 2'b00) subdivision <= subdivision - 1'b1; end end endmodule module efg (A,B,count,clk,rst_n); input wire A; input wire B; input clk; input rst_n; output reg [15:0] count; always @(posedge clk) begin if(!rst_n) count <= 0; else begin count <= count + 1; end end endmodule module divider(clk, subdivision, count, quotient); input clk; input [15:0] subdivision; input [15:0] count; output [15:0] quotient; reg [15:0] dividend; reg [15:0] divisor; reg [15:0] quotient; integer i; always @(posedge clk) begin dividend <= subdivision; divisor <= count; quotient <= 0; for (i = 0; i < 16; i = i + 1) begin dividend <= dividend - divisor; quotient <= {quotient[14:0], dividend[15]}; dividend <= dividend << 1; end end endmodule根据所给代码写一个testbench

问题在哪?always @ (posedge clk or negedge rst_n) begin if(!rst_n) begin bps_start_r <= 1'bz;//波特率时钟启动信号 tx_en <= 1'b0; tx_data <= 1'b0; count <= 1'b0; end else if(start) begin //接收数据完毕,准备把接收到的数据发回去 bps_start_r <= 1'b1;//波特率时钟状态为1 case(count) 1'b00:begin tx_data <= data[2'd0]; count <= 1'b01; end 1'b01:begin tx_data <= data[2'd1]; count <= 1'b10; end 1'b10:begin//不做这个? tx_data <= data[2'd2]; count <= 1'b00; end default:count <= 1'b00; endcase tx_en <= 1'b1; //进入发送数据状态中 end else if(num==8'd11) begin //数据发送完成,复位 bps_start_r <= 1'b0; tx_en <= 1'b0; end end assign bps_start = bps_start_r; //--------------------------------------------------------- reg rs232_tx_r; always @ (posedge clk or negedge rst_n) begin if(!rst_n) begin num <= 8'd0; rs232_tx_r <= 1'b1; end else if(tx_en)//发送数据使能信号 begin if(clk_bps) begin num <= num+1'b1; case (num) 8'd0: rs232_tx_r <= 1'b0; //发送起始位 8'd1: rs232_tx_r <= tx_data[0] ; //发送第0bit 8'd2: rs232_tx_r <= tx_data[1] ; //发送第1bit 8'd3: rs232_tx_r <= tx_data[2] ; //发送第2bit 8'd4: rs232_tx_r <= tx_data[3] ; //发送第3bit 8'd5: rs232_tx_r <= tx_data[4] ; //发送第4bit 8'd6: rs232_tx_r <= tx_data[5] ; //发送第5bit 8'd7: rs232_tx_r <= tx_data[6] ; //发送第6bit 8'd8: rs232_tx_r <= tx_data[7] ; //发送第7bit 8'd9: rs232_tx_r <= 1'b1; //发送结束位 default: rs232_tx_r <= 1'b1; endcase end else if(num==8'd11) num <= 8'd0; //复位 end end assign rs232_tx = rs232_tx_r;

为什么电脑不同时显示ain0、ain1、ain2,每次只显示一个?always @ (posedge clk or negedge rst_n) begin if(!rst_n) begin bps_start_r <= 1'bz;//波特率时钟启动信号 tx_en <= 1'b0; state<=4'd0; end else if(start) begin //接收数据完毕,准备把接收到的数据发回去 bps_start_r <= 1'b1;//波特率时钟状态为1 tx_en <= 1'b1; //进入发送数据状态中 end else if(num==8'd11) begin //数据发送完成,复位 bps_start_r <= 1'b0; tx_en <= 1'b0; state<=state+1'b1; end end assign bps_start = bps_start_r; reg rs232_tx_r; reg [1:0]count; reg flag; always @ (posedge clk or negedge rst_n) begin if(!rst_n) begin num <= 8'd0; rs232_tx_r <= 1'b1; tx_data <= 8'd0; count<=1'b0; flag<=0; end else if(tx_en)//发送数据使能信号 begin flag<=0; count <= count +1'b1; case(count) 2'b00:begin tx_data <=ain0; flag<= 1; end 2'b01:begin tx_data <=ain1; flag<= 1; end 2'b10:begin tx_data <=ain2; flag<= 1; end default:count<=1'b0; endcase if(count == 1'd3) count<= 1'd0; if(clk_bps&&flag) begin num <= num+1'b1; case (num) 8'd0: rs232_tx_r <= 1'b0; //发送起始位 8'd1: rs232_tx_r <= tx_data[0] ; //发送第0bit 8'd2: rs232_tx_r <= tx_data[1] ; //发送第1bit 8'd3: rs232_tx_r <= tx_data[2] ; //发送第2bit 8'd4: rs232_tx_r <= tx_data[3] ; //发送第3bit 8'd5: rs232_tx_r <= tx_data[4] ; //发送第4bit 8'd6: rs232_tx_r <= tx_data[5] ; //发送第5bit 8'd7: rs232_tx_r <= tx_data[6] ; //发送第6bit 8'd8: rs232_tx_r <= tx_data[7] ; //发送第7bit 8'd9: rs232_tx_r <= 1'b1; //发送结束位 default: rs232_tx_r <= 1'b1; endcase end else if(num==8'd11) num <= 8'd0; //复位 end end assign rs232_tx = rs232_tx_r;

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