标签：wire 0000 temp FPGA ds18b20 mem 单总线 rst reg
基于ds18b20单总线温度器设计
一、系统框图 状态转换图
二、代码
太久之前写的不想改了直接白嫖的代码
下面展示一些 内联代码片。
ds18b20_driver
module ds18b20_driver(
input clk ,
input rst_n ,
input dq_in ,
output reg dq_out ,
output reg dq_out_en ,
output reg temp_sign ,//温度值符号位 0：正 1：负温
output reg [23:0]temp_out ,
output reg temp_out_vld
);
//状态机参数
localparam M_IDLE = 9'b0_0000_0001,
M_REST = 9'b0_0000_0010,
M_RELE = 9'b0_0000_0100,
M_RACK = 9'b0_0000_1000,
M_ROMS = 9'b0_0001_0000,
M_CONT = 9'b0_0010_0000,
M_WAIT = 9'b0_0100_0000,
M_RCMD = 9'b0_1000_0000,
M_RTMP = 9'b1_0000_0000;
localparam S_IDLE = 6'b00_0001,
S_LOW = 6'b00_0010,
S_SEND = 6'b00_0100,
S_SAMP = 6'b00_1000,
S_RELE = 6'b01_0000,
S_DONE = 6'b10_0000;
parameter TIME_1US = 50, //基本时间1us
TIME_RST = 480, //复位脉冲 500us
TIME_REL = 20, //主机释放总线 20us
TIME_PRE = 200, //主机接收存在脉冲 200us
TIME_WAIT = 750000, //主机发完温度转换命令 等待750ms
TIME_LOW = 2, //主机拉低总线 2us
TIME_RW = 60, //主机读、写1bit 60us
TIME_REC = 2; //主机读写完1bit释放总线 3us
localparam CMD_ROMS = 8'hCC,
CMD_CONT = 8'h44,
CMD_RTMP = 8'hBE;
//信号定义
reg [8:0] m_state_c ;//主状态机
reg [8:0] m_state_n ;
reg [5:0] s_state_c ;//从状态机
reg [5:0] s_state_n ;
reg [5:0] cnt_1us ;//1us计数器
wire add_cnt_1us ;
wire end_cnt_1us ;
reg [19:0] cnt ;//复位脉冲、释放、存在脉冲、等待750ms
wire add_cnt ;
wire end_cnt ;
reg [19:0] X ;
reg [4:0] cnt_bit ;
wire add_cnt_bit ;
wire end_cnt_bit ;
reg slave_ack ;//接收存在脉冲
reg flag ;//0：发温度转换命令 1：发温度读取命令
reg [7:0] wr_data ;
reg [15:0] orign_data ;//采样温度值寄存器 串并转换
reg [10:0] temp_data ;
wire [23:0] temp_data_w ;//组合逻辑计算实际温度值 十进制
wire m_idle2m_rest ;
wire m_rest2m_rele ;
wire m_rele2m_rack ;
wire m_rack2m_roms ;
wire m_roms2m_cont ;
wire m_roms2m_rcmd ;
wire m_cont2m_wait ;
wire m_wait2m_rest ;
wire m_rcmd2m_rtmp ;
wire m_rtmp2m_idle ;
wire s_idle2s_low ;
wire s_low2s_send ;
wire s_low2s_samp ;
wire s_send2s_rele ;
wire s_samp2s_rele ;
wire s_rele2s_low ;
wire s_rele2s_done ;
//状态机设计
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
m_state_c <= M_IDLE;
end
else begin
m_state_c <= m_state_n;
end
end
always @(*)begin
case(m_state_c)
M_IDLE:begin
if(m_idle2m_rest)
m_state_n = M_REST;
else
m_state_n = m_state_c;
end
M_REST:begin
if(m_rest2m_rele)
m_state_n = M_RELE;
else
m_state_n = m_state_c;
end
M_RELE:begin
if(m_rele2m_rack)
m_state_n = M_RACK;
else
m_state_n = m_state_c;
end
M_RACK:begin
if(m_rack2m_roms)
m_state_n = M_ROMS;
else
m_state_n = m_state_c;
end
M_ROMS:begin
if(m_roms2m_cont)
m_state_n = M_CONT;
else if(m_roms2m_rcmd)
m_state_n = M_RCMD;
else
m_state_n = m_state_c;
end
M_CONT:begin
if(m_cont2m_wait)
m_state_n = M_WAIT;
else
m_state_n = m_state_c;
end
M_WAIT:begin
if(m_wait2m_rest)
m_state_n = M_REST;
else
m_state_n = m_state_c;
end
M_RCMD:begin
if(m_rcmd2m_rtmp)
m_state_n = M_RTMP;
else
m_state_n = m_state_c;
end
M_RTMP:begin
if(m_rtmp2m_idle)
m_state_n = M_IDLE;
else
m_state_n = m_state_c;
end
default:m_state_n = M_IDLE;
endcase
end
assign m_idle2m_rest = m_state_c == M_IDLE && (end_cnt_1us);
assign m_rest2m_rele = m_state_c == M_REST && (end_cnt);
assign m_rele2m_rack = m_state_c == M_RELE && (end_cnt);
assign m_rack2m_roms = m_state_c == M_RACK && (end_cnt && slave_ack == 1'b0);
assign m_roms2m_cont = m_state_c == M_ROMS && (s_state_c == S_DONE && flag == 1'b0);
assign m_roms2m_rcmd = m_state_c == M_ROMS && (s_state_c == S_DONE && flag == 1'b1);
assign m_cont2m_wait = m_state_c == M_CONT && (s_state_c == S_DONE);
assign m_wait2m_rest = m_state_c == M_WAIT && (end_cnt);
assign m_rcmd2m_rtmp = m_state_c == M_RCMD && (s_state_c == S_DONE);
assign m_rtmp2m_idle = m_state_c == M_RTMP && (s_state_c == S_DONE);
//从状态机
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
s_state_c <= S_IDLE;
end
else begin
s_state_c <= s_state_n;
end
end
always @(*)begin
case(s_state_c)
S_IDLE:begin
if(s_idle2s_low)
s_state_n = S_LOW;
else
s_state_n = s_state_c;
end
S_LOW :begin
if(s_low2s_send)
s_state_n = S_SEND;
else if(s_low2s_samp)
s_state_n = S_SAMP;
else
s_state_n = s_state_c;
end
S_SEND:begin
if(s_send2s_rele)
s_state_n = S_RELE;
else
s_state_n = s_state_c;
end
S_SAMP:begin
if(s_samp2s_rele)
s_state_n = S_RELE;
else
s_state_n = s_state_c;
end
S_RELE:begin
if(s_rele2s_done)
s_state_n = S_DONE;
else if(s_rele2s_low)
s_state_n = S_LOW;
else
s_state_n = s_state_c;
end
S_DONE:begin
s_state_n = S_IDLE;
end
default:s_state_n = S_IDLE;
endcase
end
assign s_idle2s_low = s_state_c == S_IDLE && (m_state_c == M_ROMS || m_state_c == M_CONT || m_state_c == M_RCMD || m_state_c == M_RTMP);
assign s_low2s_send = s_state_c == S_LOW && (m_state_c == M_ROMS || m_state_c == M_CONT || m_state_c == M_RCMD) && end_cnt;
assign s_low2s_samp = s_state_c == S_LOW && (m_state_c == M_RTMP && end_cnt);
assign s_send2s_rele = s_state_c == S_SEND && (end_cnt);
assign s_samp2s_rele = s_state_c == S_SAMP && (end_cnt);
assign s_rele2s_low = s_state_c == S_RELE && (end_cnt && end_cnt_bit == 1'b0);
assign s_rele2s_done = s_state_c == S_RELE && (end_cnt_bit);
//计数器
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
cnt_1us <= 0;
end
else if(add_cnt_1us)begin
if(end_cnt_1us)begin
cnt_1us <= 0;
end
else begin
cnt_1us <= cnt_1us + 1;
end
end
end
assign add_cnt_1us = 1'b1;
assign end_cnt_1us = add_cnt_1us && cnt_1us == TIME_1US-1;
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
cnt <= 0;
end
else if(add_cnt)begin
if(end_cnt)begin
cnt <= 0;
end
else begin
cnt <= cnt + 1;
end
end
end
assign add_cnt = end_cnt_1us;
assign end_cnt = add_cnt && cnt == X-1;
always @(*)begin
if(m_state_c == M_REST)begin
X = TIME_RST;
end
else if(m_state_c == M_RELE)begin
X = TIME_REL;
end
else if(m_state_c == M_RACK)begin
X = TIME_PRE;
end
else if(m_state_c == M_WAIT)begin
X = TIME_WAIT;
end
else begin
if(s_state_c == S_LOW)
X = TIME_LOW;
else if(s_state_c == S_SEND || s_state_c == S_SAMP)
X = TIME_RW;
else
X = TIME_REC;
end
end
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
cnt_bit <= 0;
end
else if(add_cnt_bit)begin
if(end_cnt_bit)begin
cnt_bit <= 0;
end
else begin
cnt_bit <= cnt_bit + 1;
end
end
end
assign add_cnt_bit = s_state_c == S_RELE && end_cnt;
assign end_cnt_bit = add_cnt_bit && cnt_bit == ((m_state_c == M_RTMP)?16-1:8-1);
//slave_ack 采样传感器的存在脉冲
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
slave_ack <= 1'b1;
end
else if(m_state_c == M_RACK && cnt == 60 && end_cnt_1us)begin
slave_ack <= dq_in;
end
end
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
flag <= 0;
end
else if(m_wait2m_rest)begin
flag <= 1'b1;
end
else if(m_rtmp2m_idle)begin
flag <= 1'b0;
end
end
//输出信号
//dq_out
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
dq_out <= 0;
end
else if(m_idle2m_rest | s_idle2s_low | m_wait2m_rest | s_rele2s_low)begin
dq_out <= 1'b0;
end
else if(s_low2s_send)begin
dq_out <= wr_data[cnt_bit];
end
end
//dq_out_en
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
dq_out_en <= 0;
end
else if(m_idle2m_rest | s_idle2s_low | s_rele2s_low | m_wait2m_rest)begin
dq_out_en <= 1'b1; //输出 dq_out
end
else if(m_rest2m_rele | s_send2s_rele | s_low2s_samp)begin
dq_out_en <= 1'b0; //不输出 dq_out
end
end
/*
注意:
在主机发完复位脉冲后要释放总线；
发完1bit数据后要释放总线；
在继续发下一bit的时候，仍然要先拉低总线；
在读数据时，拉低总线1us后要释放总线；
*/
//wr_data
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
wr_data <= 0;
end
else if(m_rack2m_roms)begin
wr_data <= CMD_ROMS;
end
else if(m_roms2m_cont)begin
wr_data <= CMD_CONT;
end
else if(m_roms2m_rcmd)begin
wr_data <= CMD_RTMP;
end
end
//orign_data
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
orign_data <= 0;
end
else if(s_state_c == S_SAMP && cnt == 11 && end_cnt_1us)begin
orign_data[cnt_bit] <= dq_in;
end
end
//temp_data
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
temp_data <= 0;
end
else if(s_state_c == S_SAMP && cnt_bit == 15 && s_samp2s_rele)begin
if(orign_data[15])
temp_data <= ~orign_data[10:0] + 1'b1; //负温 则取反加1
else
temp_data <= orign_data[10:0]; //正温
end
end
/*
实际的温度值为 temp_data * 0.0625;
为了保留4位小数精度，将实际温度值放大了10000倍，
即 temp_data * 625；
*/
assign temp_data_w = temp_data * 625;
//temp_out
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
temp_out <= 0;
end
else if(m_state_c == M_RTMP && s_rele2s_done)begin
temp_out <= temp_data_w;
end
end
//temp_out_vld
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
temp_out_vld <= 0;
end
else begin
temp_out_vld <= m_state_c == M_RTMP && s_rele2s_done;
end
end
//temp_sign
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
temp_sign <= 0;
end
else if(s_state_c == S_SAMP && cnt_bit == 15 && s_samp2s_rele)begin
temp_sign <= orign_data[15];
end
end
endmodule
control
module control(
input clk ,
input rst_n ,
input din_sign ,
input [23:0] din ,
input din_vld ,
output wire dout_sign ,
output wire[23:0] dout ,
output reg dout_vld
);
//中间信号定义
wire [23:0] temp_bcd ;
wire temp_bcd_vld;
binary2bcd#(.DIN_W(20),.DOUT_W(24))(
.clk (clk ),//时钟
.rst_n (rst_n ),//复位
.en (din_vld ),
.binary_din (din[19:0] ),//输入二进制数据
//输出信号定义
.bcd_dout (temp_bcd ), //输出BCD码数据
.bcd_dout_vld(temp_bcd_vld )
);
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
dout_vld <= 1'b0;
end
else begin
dout_vld <= temp_bcd_vld;
end
end
assign dout = temp_bcd;
assign dout_sign = din_sign;
endmodule
binary2bcd
module binary2bcd#(parameter DIN_W = 32,DOUT_W = 40)(
input clk ,//时钟
input rst_n ,//复位
input en ,
input [DIN_W-1:0] binary_din ,//输入二进制数据
//输出信号定义
output reg [DOUT_W-1:0] bcd_dout , //输出BCD码数据
output reg bcd_dout_vld
);
//状态机参数定义
localparam IDLE = 4'b0001,
READY = 4'b0010,
SHIFT = 4'b0100,
DONE = 4'b1000;
//信号定义
reg [3:0] state_c ;
reg [3:0] state_n ;
reg [DIN_W-1:0] din_r ; //数据锁存
reg [5:0] shift_cnt ; //移位次数计数器
wire add_shift_cnt;
wire end_shift_cnt;
reg [3:0] mem_r0 ;
reg [3:0] mem_r1 ;
reg [3:0] mem_r2 ;
reg [3:0] mem_r3 ;
reg [3:0] mem_r4 ;
reg [3:0] mem_r5 ;
reg [3:0] mem_r6 ;
reg [3:0] mem_r7 ;
reg [3:0] mem_r8 ;
reg [3:0] mem_r9 ;
wire [3:0] mem_w0 ;
wire [3:0] mem_w1 ;
wire [3:0] mem_w2 ;
wire [3:0] mem_w3 ;
wire [3:0] mem_w4 ;
wire [3:0] mem_w5 ;
wire [3:0] mem_w6 ;
wire [3:0] mem_w7 ;
wire [3:0] mem_w8 ;
wire [3:0] mem_w9 ;
wire [39:0] bcd_res ;
wire idle2ready ;
wire shift2done ;
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
state_c <= IDLE ;
end
else begin
state_c <= state_n;
end
end
always @(*) begin
case(state_c)
IDLE :begin
if(idle2ready)
state_n = READY;
else
state_n = state_c;
end
READY:begin
state_n = SHIFT;
end
SHIFT :begin
if(shift2done)
state_n = DONE ;
else
state_n = state_c ;
end
DONE :begin
state_n = IDLE;
end
default : state_n = IDLE;
endcase
end
assign idle2ready = state_c == IDLE && (en);
assign shift2done = state_c == SHIFT && (end_shift_cnt);
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
shift_cnt <= 0;
end
else if(add_shift_cnt)begin
if(end_shift_cnt)
shift_cnt <= 0;
else
shift_cnt <= shift_cnt + 1;
end
end
assign add_shift_cnt = state_c == SHIFT;
assign end_shift_cnt = add_shift_cnt && shift_cnt == DIN_W-1;
//din_r
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
din_r <= 0;
end
else if(en)begin
din_r <= binary_din;
end
else if(state_c == SHIFT)begin //移位状态下，每个时钟周期向左移1位
din_r <= din_r << 1'b1;
end
end
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
mem_r0 <= 0;
mem_r1 <= 0;
mem_r2 <= 0;
mem_r3 <= 0;
mem_r4 <= 0;
mem_r5 <= 0;
mem_r6 <= 0;
mem_r7 <= 0;
mem_r8 <= 0;
mem_r9 <= 0;
end
else if(idle2ready)begin
mem_r0 <= 0;
mem_r1 <= 0;
mem_r2 <= 0;
mem_r3 <= 0;
mem_r4 <= 0;
mem_r5 <= 0;
mem_r6 <= 0;
mem_r7 <= 0;
mem_r8 <= 0;
mem_r9 <= 0;
end
else if(state_c == SHIFT)begin
mem_r0 <= {mem_w0[2:0],din_r[DIN_W-1]};
mem_r1 <= {mem_w1[2:0],mem_w0[3]};
mem_r2 <= {mem_w2[2:0],mem_w1[3]};
mem_r3 <= {mem_w3[2:0],mem_w2[3]};
mem_r4 <= {mem_w4[2:0],mem_w3[3]};
mem_r5 <= {mem_w5[2:0],mem_w4[3]};
mem_r6 <= {mem_w6[2:0],mem_w5[3]};
mem_r7 <= {mem_w7[2:0],mem_w6[3]};
mem_r8 <= {mem_w8[2:0],mem_w7[3]};
mem_r9 <= {mem_w9[2:0],mem_w8[3]};
end
end
assign mem_w0 = (mem_r0 > 4'd4)?(mem_r0 + 4'd3):mem_r0;
assign mem_w1 = (mem_r1 > 4'd4)?(mem_r1 + 4'd3):mem_r1;
assign mem_w2 = (mem_r2 > 4'd4)?(mem_r2 + 4'd3):mem_r2;
assign mem_w3 = (mem_r3 > 4'd4)?(mem_r3 + 4'd3):mem_r3;
assign mem_w4 = (mem_r4 > 4'd4)?(mem_r4 + 4'd3):mem_r4;
assign mem_w5 = (mem_r5 > 4'd4)?(mem_r5 + 4'd3):mem_r5;
assign mem_w6 = (mem_r6 > 4'd4)?(mem_r6 + 4'd3):mem_r6;
assign mem_w7 = (mem_r7 > 4'd4)?(mem_r7 + 4'd3):mem_r7;
assign mem_w8 = (mem_r8 > 4'd4)?(mem_r8 + 4'd3):mem_r8;
assign mem_w9 = (mem_r9 > 4'd4)?(mem_r9 + 4'd3):mem_r9;
assign bcd_res = {mem_r9,mem_r8,mem_r7,mem_r6,mem_r5,mem_r4,mem_r3,mem_r2,mem_r1,mem_r0};
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
bcd_dout <= 0;
end
else if(state_c == DONE)begin
bcd_dout <= bcd_res[DOUT_W-1:0];
end
end
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
bcd_dout_vld <= 1'b0;
end
else begin
bcd_dout_vld <= state_c == DONE;
end
end
/*
使用4bit二进制数表示0--9
4'b1111 --> 4'd15 0001 0101 8'h15 8'h10 8'h09
8'b10010111 --> 8'd151
bcd数 二进制数 左移加3
12'b0000_0000_0000 8'b10010111 初值
12'b0000_0000_0001 8'b00101110 第一次移位
12'b0000_0000_0010 8'b01011100 第二次移位
12'b0000_0000_0100 8'b10111000 第三次移位
12'b0000_0000_1001 8'b01110000 第四次移位
12'b0000_0000_1100 8'b01110000 加3
12'b0000_0001_1000 8'b11100000 第五次移位
12'b0000_0001_1011 8'b11100000 加3
12'b0000_0011_0111 8'b11000000 第六次移位
12'b0000_0011_1010 8'b11000000 加3
12'b0000_0111_0101 8'b10000000 第七次移位
12'b0000_1010_1000 8'b10000000 加3
12'b0001_0101_0001 8'b00000000 第八次移位
*/
endmodule
seg_driver
```javascript
module seg_driver (
input clk ,
input rst_n ,
input din_sign,
input [23:0] din ,
input din_vld ,
output [5:0] sel ,//片选信号
output [7:0] dig //段选信号
);
parameter TIME_SCAN = 25_000;//扫描间隔 5ms
localparam ZER = 7'b100_0000,
ONE = 7'b111_1001,
TWO = 7'b010_0100,
THR = 7'b011_0000,
FOU = 7'b001_1001,
FIV = 7'b001_0010,
SIX = 7'b000_0010,
SEV = 7'b111_1000,
EIG = 7'b000_0000,
NIN = 7'b001_0000,
N = 7'b011_1111,//-
P = 7'b000_1111;//+
reg [19:0] cnt_scan ;//数码管扫描计数器
wire add_cnt_scan;
wire end_cnt_scan;
reg [5:0] seg_sel ;
reg [7:0] seg_dig ;
reg [3:0] disp_num ;
reg dot ;
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
cnt_scan <= 0;
end
else if(add_cnt_scan)begin
if(end_cnt_scan)begin
cnt_scan <= 0;
end
else begin
cnt_scan <= cnt_scan + 1;
end
end
end
assign add_cnt_scan = 1'b1;
assign end_cnt_scan = add_cnt_scan && cnt_scan == TIME_SCAN-1;
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
seg_sel <= 6'b111110;
end
else if(end_cnt_scan)begin
seg_sel <= {seg_sel[4:0],seg_sel[5]};
end
end
//disp_num
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
disp_num <= 0;
end
else begin
case (seg_sel)
6'b111110:begin disp_num <= din[7:4] ;dot = 1'b1;end
6'b111101:begin disp_num <= din[11:8] ;dot = 1'b1;end
6'b111011:begin disp_num <= din[15:12];dot = 1'b1;end
6'b110111:begin disp_num <= din[19:16];dot = 1'b0;end
6'b101111:begin disp_num <= din[23:20];dot = 1'b1;end
6'b011111:begin disp_num <= din_sign?4'ha:4'hb;dot = 1'b1;end
default :begin disp_num <= 4'hF;end
endcase
end
end
//seg_dig
always @(posedge clk or negedge rst_n)begin
if(!rst_n)begin
seg_dig <= 8'hff;
end
else begin
case (disp_num)
4'h0:seg_dig <= {dot,ZER};
4'h1:seg_dig <= {dot,ONE};
4'h2:seg_dig <= {dot,TWO};
4'h3:seg_dig <= {dot,THR};
4'h4:seg_dig <= {dot,FOU};
4'h5:seg_dig <= {dot,FIV};
4'h6:seg_dig <= {dot,SIX};
4'h7:seg_dig <= {dot,SEV};
4'h8:seg_dig <= {dot,EIG};
4'h9:seg_dig <= {dot,NIN};
4'hA:seg_dig <= {dot,N};
4'hB:seg_dig <= {dot,P};
default:seg_dig <= 8'hff;
endcase
end
end
assign dig = seg_dig;
assign sel = seg_sel;
endmodule
temp_detect
```javascript
module temp_detect (
input clk ,
input rst_n ,
inout dq ,//传感器总线
output [5:0] sel ,
output [7:0] dig
);
//信号定义
wire dq_in ;
wire dq_out ;
wire dq_out_en ;
wire temp_sign ;
wire [23:0] temp_out ;
wire temp_out_vld;
wire [23:0] dout ;
wire dout_vld ;
assign dq = dq_out_en?dq_out:1'bz;
assign dq_in = dq;
//模块例化
ds18b20_driver ds18b20_driver(
.clk (clk ),
.rst_n (rst_n ),
.dq_in (dq_in ),
.dq_out (dq_out ),
.dq_out_en (dq_out_en ),
.temp_sign (temp_sign ),
.temp_out (temp_out ),
.temp_out_vld (temp_out_vld )
);
control control(
.clk (clk ),
.rst_n (rst_n ),
.din_sign (temp_sign ),
.din (temp_out ),
.din_vld (temp_out_vld ),
.dout (dout ),
.dout_vld (dout_vld )
);
seg_driver seg_driver(
.clk (clk ),
.rst_n (rst_n ),
.din_sign (temp_sign ),
.din (dout ),
.din_vld (dout_vld ),
.sel (sel ),
.dig (dig )
);
endmodule
三、验证
标签：wire,0000,temp,FPGA,ds18b20,mem,单总线,rst,reg 来源： https://blog.csdn.net/li_lys/article/details/123190259
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