1. 将数据传输从结构体改造为类
1.1 改造
1.2 改造后的tb.sv
class rt_packet;
bit [3:0] src;
bit [3:0] dst;
bit [7:0] data [];
function void set_members(bit [3:0]src, bit [3:0]dst, bit[7:0]data []);
this.src = src;
this.dst = dst;
this.data = data;
endfunction
endclass
interface rt_interface();
logic clock;
logic reset_n;
logic [15:0] din;
logic [15:0] frame_n;
logic [15:0] valid_n;
logic [15:0] dout;
logic [15:0] valido_n;
logic [15:0] busy_n;
logic [15:0] frameo_n;
endinterface
//********************************** stimulator **********************************//
module rt_stimulator(
rt_interface intf
);
//for debug purpose from waveform //定义检测状态的变量
typedef enum {DRV_RESET,DRV_IDLE,DRV_ADDR,DRV_PAD,DRV_DATA} drv_state_t;
drv_state_t dbg_state;
byte unsigned dbg_din_chnl0_data;
int src_chnl_status[int]; //关联数组，后面int：src_chnl的number；前面int：dest_chnl的Number ？？
//generator传送p给stimulator
rt_packet pkts[$];//定义stimulator中的的队列pkts
function void put_pkt(input rt_packet p);
pkts.push_back(p); //将generator中传过来的p放入stimulator的pkts中(在pkts队列尾插入p)
endfunction
//reset阶段，复位时，reset_n为低电平,frame_n和valid_n为高电平
initial begin : drive_reset_proc
drive_reset();
end
task drive_reset();
@(negedge intf.reset_n);
dbg_state <= DRV_RESET;
intf.din <= 0;
intf.frame_n <= '1;//等效16'hFFFF
intf.valid_n <= '1;
endtask
// 发送数据
initial begin : drive_chnl_proc
//rt_packet_t p;
@(negedge intf.reset_n);
repeat(10) @(posedge intf.clock);//延迟10个时钟周期
forever begin
automatic rt_packet p;//声明一个动态的
wait(pkts.size()>0);
p = pkts.pop_front(); //将p从队列pkts里面取出
fork//后台触发线程，触发线程在后台运行，继续执行剩下内容
begin
wait_src_chnl_avail(p);//判断src chnl是否被占用，是否需要等待
drive_chnl(p.src, p.dst, p.data);//从P中拿到发送端口，目标端口，发送数据
set_src_chnl_avail(p);
end
join_none
end
end
task automatic wait_src_chnl_avail(rt_packet p);//判断src chnl是否被占用，是否需要等待
if(!src_chnl_status.exists(p.src))//src_chnl_status关联数组里面不含p.src，(表示未占用任何dest_chnl,一开始不满足）
src_chnl_status[p.src] = p.dst;//表示当前正在使用src_chnl,对应dest_chnl就是p.dst（p.src端口在向p.dst端口发送数据）
else if(src_chnl_status[p.src] >= 0)//如果在给0,1,2...dest_chnl发送数据（被占用），需要等待,，否则不需要等待
wait(src_chnl_status[p.src] == -1);//直到src_chnl_status[p.src] == -1(自定义的dest_chnl端口数之外任意的数，表示未占用任何dest_chnl)
endtask
function automatic set_src_chnl_avail(rt_packet p);
src_chnl_status[p.src] = -1;//如果chnl发送完后，把src_chnl置回来(自定义的dest_chnl端口数之外任意的数，表示未占用任何dest_chnl)
endfunction
task automatic drive_chnl(bit[3:0] saddr, bit [3:0] daddr, byte unsigned data[]);
$display("@%0t: [DRV]src_chnl[%0d],dest_chnl[%0d] data trans started",$time,saddr,daddr);
// drive address phase 输入地址位阶段
for(int i=0;i<4;i++)begin //4 clock
@(posedge intf.clock);
dbg_state <=DRV_ADDR;
intf.din[saddr] <= daddr[i];
intf.valid_n[saddr] <= $urandom_range(0,1); //valid_n在din的地址输入时间段可为任意值x
intf.frame_n[saddr] <= 1'b0; //frame_n需要为低
end
// drive pad phase //隔离阶段
for (int i=0;i<5;i++)begin //5 clock
@(posedge intf.clock);
dbg_state <=DRV_PAD;
intf.din[saddr] <= 1'b1;
intf.valid_n[saddr] <= 1'b1; //valid_n需为高电平
intf.frame_n[saddr] <= 1'b0; //frame_n需为低电平
end
// drive data phase 传输数据阶段
foreach(data[id])begin
for(int i=0;i<8;i++)begin
@(posedge intf.clock);
dbg_state <=DRV_DATA;
dbg_din_chnl0_data <= data[id];
intf.din[saddr] <= data[id][i];
intf.valid_n[saddr] <=1'b0;
intf.frame_n[saddr] <= (id == data.size()-1 && i == 7) ? 1'b1 : 1'b0;//packet最后一位输出数据时frameo_n为高
end
end
// drive idle phase 闲置（没有数据传输）阶段
@(posedge intf.clock);
dbg_state <=DRV_IDLE;
dbg_din_chnl0_data <= 0;
intf.din[saddr] <= 1'b0;
intf.valid_n[saddr] <= 1'b1;
intf.frame_n[saddr] <= 1'b1;
$display("@%0t: [DRV]src_chnl[%0d],dest_chnl[%0d] data trans finished",$time,saddr,daddr);
endtask
endmodule
//********************************** generator **********************************//
module rt_generator; //generator产生数据交给stimulator
rt_packet pkts[$]; //定义队列
function void put_pkt(input rt_packet p);
pkts.push_back(p); //将p放入队列pkts里面（在pkts队列尾插入p）
endfunction
task get_pkt(output rt_packet p);
wait(pkts.size() >0 ) //队列不为空
p = pkts.pop_front(); //将p从队列pkts里面取出，提取队列首元素
endtask
//generate a random packet
function void gen_pkt(int src = -1, int dst = -1);
endfunction
endmodule
//********************************** monitor **********************************//
module rt_monitor(rt_interface intf);
rt_packet in_pkts[16][$];
rt_packet out_pkts[16][$];
initial begin : mon_chnl_proc
foreach(in_pkts[i]) begin
automatic int chid = i;
fork
mon_chnl_in(chid);//每个输入端口均调用mon_chnl_in任务，监测数据输入
mon_chnl_out(chid);//每个输出端口均调用mon_chnl_out任务，监测数据输入
join_none
end
end
task automatic mon_chnl_in (bit[3:0]id);//监测数据输入的任务
rt_packet pkt; //定义结构体变量
forever begin
//clear content for the same struct variable。清除pkt
pkt = new();
pkt.src = id; //第id个输入端口
//monitor specific channel-in data and put it into the queue
// monitor address phase
@(negedge intf.frame_n[id]);//监测frame_n下降沿(frame_n由时钟驱动)
for(int i=0; i<4; i++)begin
@(negedge intf.clock); //frame_n下降沿后监测4个clk negedge
pkt.dst[i]= intf.din[id];
end
$display ("@%0t: [MON] src_chn1[%0d] & dest_chn1[%0d] data trans started",$time,pkt.src,pkt.dst);
//pass pad phase 不考虑pad阶段是否满足协议要求
repeat(5) @(negedge intf.clock);
do begin
pkt.data = new [pkt.data.size + 1](pkt.data);//创建动态数组并复制pkt.data
for ( int i=0; i<8; i++) begin
@(negedge intf.clock); //在8个clk negedge监测8bit数据
pkt.data[pkt.data.size-1][i] = intf.din[id];
end
end while(!intf.frame_n[id]);
in_pkts[id].push_back(pkt); //将monitor拿到的数据放入in_pkts
$display("@%0t: [MON] src_chn1[%0d] & dest_chn1[%0d] data trans [%0p] finished",$time,pkt.src,pkt.dst,pkt.data);
end
endtask
task automatic mon_chnl_out(bit[ 3:0]id);//监测数据输出的任务
rt_packet pkt;
forever begin
//clear content for the same struct variable
pkt = new();
pkt.src = 0;
pkt.dst = id;
@(negedge intf.frameo_n[id]);
$display( "@%0t: [MON] CH_OUT dest_chn1[%0d] data trans started",$time,pkt.dst);
do begin
pkt.data = new [ pkt.data.size + 1](pkt.data);
for(int i=0;i<8; i++) begin
@(negedge intf.clock iff !intf.valido_n[id]);//clock与valido_n信号同时为低
pkt.data[pkt.data.size-1][i]= intf.dout [id];
end
end while(!intf.frameo_n[id]);
out_pkts[id].push_back(pkt);
$display("@%0t: [MON] CH_OUT dest_chn1[%0d] data trans [%0p] finished",$time,pkt.dst,pkt.data);
//monitor specific channel-out data and put it into the queue
end
endtask
endmodule
//********************************** tb **********************************//
module tb;
bit clk,rstn;
logic [15:0] din, frame_n, valid_n;
logic [15:0] dout, valido_n, busy_n, frameo_n;
// 产生时钟，周期为10ns
initial
forever #5ns clk <= !clk;
// 产生复位信号
initial begin
#2ns rstn <= 1;
#10ns rstn <= 0;
#10ns rstn <= 1;
end
//例化router为DUT
router dut(
.reset_n(rstn),
.clock(clk),
.frame_n(intf.frame_n),
.valid_n(intf.valid_n),
.din(intf.din),
.dout(intf.dout),
.busy_n(intf.busy_n),
.valido_n(intf.valido_n),
.frameo_n(intf.frameo_n)
);
rt_interface intf();//例化接口
assign intf.reset_n = rstn;
assign intf.clock = clk;
//例化stimulator
rt_stimulator stim(intf);
//例化Monitor
rt_monitor mon(intf);
//例化generator
rt_generator gen();
initial begin:generate_data_proc//产生数据
rt_packet p;
p = new();
p.set_members(0,3,'{8'h33,8'h77});
gen.put_pkt(p);
p = new();//每次put_pkt都需要new一下
p.set_members(0,5,'{8'h55,8'h66});
gen.put_pkt(p);
p = new();
p.set_members(3,6,'{8'h77,8'h88,8'h22});
gen.put_pkt(p);
p = new();
p.set_members(4,7,'{8'haa,8'hcc,8'h33});
gen.put_pkt(p);
end
initial begin:genarator_to_stimulator_proc//取出genarator中的数据给stimulator
rt_packet p;
forever begin
gen.get_pkt(p);
stim.put_pkt(p);
end
end
endmodule 1.3 仿真结果
2. 将drive_chnl任务的输入改为类
2.1 改造
(1)增加打印函数
function string sprint();//打印packet信息的函数
sprint = {sprint , $sformatf("src = %0dn",src)};
sprint = {sprint , $sformatf("dst = %0dn",dst)};
sprint = {sprint , $sformatf("data_length = %0dn",data.size())};
foreach(data[i])
sprint = {sprint , $sformatf("data[%0d] = 'h%0xn", i, data[i])};
endfunction(2)将drive_chnl任务的输入改为类
task automatic drive_chnl(rt_packet p);2.2 改造后的tb.sv
class rt_packet;
bit [3:0] src;
bit [3:0] dst;
bit [7:0] data [];
function new();
endfunction
function void set_members(bit [3:0]src, bit [3:0]dst, bit[7:0]data []);
this.src = src;
this.dst = dst;
this.data = data;
endfunction
function string sprint();
sprint = {sprint , $sformatf("src = %0dn",src)};
sprint = {sprint , $sformatf("dst = %0dn",dst)};
sprint = {sprint , $sformatf("data_length = %0dn",data.size())};
foreach(data[i])
sprint = {sprint , $sformatf("data[%0d] = 'h%0xn", i, data[i])};
endfunction
endclass
//********************************** rt_stimulator ***********************************//
interface rt_interface;
logic clock;
logic reset_n;
logic [15:0] din;
logic [15:0] frame_n;
logic [15:0] valid_n;
logic [15:0] dout;
logic [15:0] valido_n;
logic [15:0] busy_n;
logic [15:0] frameo_n;
endinterface
module rt_stimulator(
rt_interface intf
);
//for debug purpose from waveform
typedef enum {DRV_RESET,DRV_IDLE,DRV_ADDR,DRV_PAD,DRV_DATA} drv_state_t;
drv_state_t dbg_state; //定义状态检测变量dbg_state
byte unsigned dbg_din_chnl0_data;
rt_packet pkts[$];//队列里面存放的将是rt_packet句柄而不再是实际的对象
int src_chnl_status[int]; //关联数组，后面int：src_chnl的number；前面int：dest_chnl的Number ？？
function void put_pkt(input rt_packet p);
pkts.push_back(p);
endfunction
initial begin : drive_reset_proc
drive_reset();
end
task drive_reset();
@(negedge intf.reset_n);
dbg_state <= DRV_RESET;
intf.din <= 0;
intf.frame_n <= '1;
intf.valid_n <= '1;
endtask
initial begin : drive_chnl_proc
@(negedge intf.reset_n);
repeat(10) @(posedge intf.clock);
forever begin
automatic rt_packet p;//声明一个动态的
wait(pkts.size() > 0);
p = pkts.pop_front();
fork //后台触发线程，触发线程在后台运行，继续执行剩下内容
begin
wait_src_chnl_avail(p);
drive_chnl(p);
set_src_chnl_avail(p);
end
join_none
end
end
task automatic wait_src_chnl_avail(rt_packet p);//判断src chnl是否被占用，是否需要等待
if(!src_chnl_status.exists(p.src))//动态数组为空
src_chnl_status[p.src] = p.dst;//表示当前正在使用src_chnl,对应dest就是p.dst
else if(src_chnl_status[p.src] >= 0)//如果给dest的0,1,2这样的chnl在发送数据，需要等待
wait(src_chnl_status[p.src] == -1);//直到
endtask
function automatic set_src_chnl_avail(rt_packet p);
src_chnl_status[p.src] = -1;//如果chnl发送完后，把src_chnl置回来
endfunction
task automatic drive_chnl(rt_packet p);
$display("@%0t:[DRV] src_chnl[%0d] & dest_chnl[%0d] data trans started with packet: n %s",$time,p.src,p.dst,p.sprint());
// drive address phase
for(int i=0; i<4; i++)begin
@(posedge intf.clock);
dbg_state <=DRV_ADDR;
intf.din[p.src] <= p.dst[i];
intf.valid_n[p.src] <= $urandom_range(0,1);
intf.frame_n[p.src] <= 1'b0;
end
// drive pad phase
for (int i=0; i<5; i++)begin
@(posedge intf.clock);
dbg_state <= DRV_PAD;
intf.din[p.src] <= 1'b1;
intf.valid_n[p.src] <= 1'b1;
intf.frame_n[p.src] <= 1'b0;
end
// drive data phase
foreach(p.data[id])begin
for(int i=0;i<8; i++)begin
@(posedge intf.clock);
dbg_state <= DRV_DATA;
dbg_din_chnl0_data <= p.data[id];
intf.din[p.src] <= p.data[id][i];
intf.valid_n[p.src] <=1'b0;
intf.frame_n[p.src] <= (id == p.data.size()-1 && i == 7) ? 1'b1 : 1'b0;
end
end
// drive idle phase
@(posedge intf.clock);
dbg_state <= DRV_IDLE;
dbg_din_chnl0_data <= 0;
intf.din[p.src] <= 1'b0;
intf.valid_n[p.src] <= 1'b1;
intf.frame_n[p.src] <= 1'b1;
$display("@%0t:[DRV] src_chnl[%0d] &dest_chnl[%0d ] finished",$time,p.src,p.dst);
endtask
endmodule
//********************************** rt_generator ************************************//
module rt_generator;
rt_packet pkts[$]; //定义队列pkts
function void put_pkt(input rt_packet p);
pkts.push_back(p); //在pkts队列尾插入p
endfunction
task get_pkt(output rt_packet p);
wait(pkts.size() >0 )
p = pkts.pop_front(); //pkts.size()>0时执行，提取队列首元素，输出队列首元素
endtask
//generate a random packet
function void gen_pkt(int src = -1, int dst = -1);
endfunction
endmodule
module rt_monitor(rt_interface intf);
rt_packet in_pkts[16][$];
rt_packet out_pkts[16][$];
initial begin: mon_chnl_proc
foreach(in_pkts[i])begin
automatic int chid = i;
fork
mon_chnl_in (chid);
mon_chnl_out (chid);
join_none
end
end
task automatic mon_chnl_in(bit[3:0] id);
rt_packet pkt;
forever begin
//clear content for the same struct variable
pkt = new();
pkt.dst = id;
//monitor specific channel-in data abd put in into the quene
//monitor adress phase
@(negedge intf.frame_n[id]);
for (int i = 0;i<4;i++)begin
@(negedge intf.clock);
pkt.dst[i] = intf.din[id];
end
$display("@%0t:[MON] CH_IN src_chnl[%0d] &dest_chnl[%0d ]data trans started",$time,pkt.src,pkt.dst);
//pass pad phase 不考虑pad阶段
repeat(5) @(negedge intf.clock);
do begin
pkt.data = new[pkt.data.size + 1] (pkt.data);
for (int i=0;i<8;i++)begin
@(negedge intf.clock);
pkt.data[pkt.data.size - 1][i] = intf.din[id];
end
end while(intf.frame_n[id]);
in_pkts[id].push_back(pkt);
$display("@%0t:[MON] CH_IN src_chnl[%0d] &dest_chnl[%0d ] finished with packet: n %s",$time,pkt.src,pkt.dst,pkt.sprint());
end
endtask
task automatic mon_chnl_out(bit[3:0] id);
rt_packet pkt;
forever begin
//clear content for the same struct variable
pkt = new();
pkt.src = 0;
pkt.dst = id;
@(negedge intf.frameo_n[id]);
$display("@%0t:[MON] CH_OUT dest_chnl[%0d ]data trans started",$time,pkt.dst);
do begin
pkt.data = new[pkt.data.size + 1] (pkt.data);
for (int i=0;i<8;i++)begin
@(negedge intf.clock iff !intf.valido_n[id]);
pkt.data[pkt.data.size - 1][i] = intf.din[id];
end
end while(!intf.frameo_n[id]);
out_pkts[id].push_back(pkt);
$display("@%0t:[MON] CH_OUT dest_chnl[%0d ] finished with packet: n %s",$time,pkt.dst,pkt.sprint());
end
endtask
endmodule
module rt_test_top;
endmodule
//********************************** tb ************************************//
module tb;
bit clk,rstn;
logic [15:0] din, frame_n, valid_n;
logic [15:0] dout, valido_n, busy_n, frameo_n;
// generate clock
initial
forever #5ns clk <= !clk;
// genarate reset
initial begin
#2ns rstn <= 1;
#10ns rstn <= 0;
#10ns rstn <= 1;
end
router dut( //例化router为dut
.reset_n(rstn)
,.clock(clk)
,.frame_n(intf.frame_n)
,.valid_n(intf.valid_n)
,.din(intf.din)
,.dout(intf.dout)
,.busy_n(intf.busy_n)
,.valido_n(intf.valido_n)
,.frameo_n(intf.frameo_n)
);
rt_interface intf(); //例化rt_interface为intf
assign intf.reset_n = rstn;
assign intf.clock = clk;
rt_stimulator stim(intf);//例化rt_stimulator为stim
rt_monitor mon(intf);
rt_generator gen(); //例化rt_generator为gen
//generate and transmit packet 产生数据
initial begin : generate_proc
rt_packet p;
p = new();
p.set_members(0,3,'{8'h33,8'h77});
gen.put_pkt(p);
p = new();//每次put_pkt都需要new一下
p.set_members(0,5,'{8'h55,8'h66});
gen.put_pkt(p);
p = new();
p.set_members(3,6,'{8'h77,8'h88,8'h22});
gen.put_pkt(p);
p = new();
p.set_members(4,7,'{8'haa,8'hcc,8'h33});
gen.put_pkt(p);
end
initial begin : transmit_proc
rt_packet p;
forever begin
gen.get_pkt(p); //generator输出p，p为generator里pkts的首元素
stim.put_pkt(p); //把数据p输入stim里的pkts队列尾
end
end
endmodule2.3 仿真结果
3. 将stimulator、generator、monitor改为类
3.1 改造
(1)将stimulator、generator、monitor从module改为class：
class rt_stimulator;
...
endclass
class rt_generator;
...
endclass
class rt_monitor;
...
endclass(2)stimulator、generator、monitor的例化变为：
rt_stimulator stim;
rt_monitor mon;
rt_generator gen;
initial begin : inst_init_proc
//build stage,例化
stim = new();
gen = new();
mon = new();
//connect sage，连接
stim.intf = intf;
mon.intf = intf;
//run stage，run
fork
stim.run();//class里面的函数不会自动调用，需要手动调用
gen.run();
mon.run();
join_none
end类默认为动态，所以使用的automatic可以去掉
(3)将drive_reset_proc和drive_chnl_proc这两个initial begin end语句改为task:
task run();
fork
drive_reset(); //reset动作
get_packet_and_drive(); //drive_chnl动作
join_none
endtask
task drive_reset();//reset
...
endtask
task drive_chnl_proc();//drive_chnl
...
endtask3.2 改造后的tb.sv
class rt_packet;
bit [3:0] src;
bit [3:0] dst;
bit [7:0] data [];
function new();
endfunction
function void set_members(bit [3:0]src, bit [3:0]dst, bit[7:0]data []);
this.src = src;
this.dst = dst;
this.data = data;
endfunction
function string sprint();//打印packet信息的函数
sprint = {sprint , $sformatf("src = %0dn",src)};
sprint = {sprint , $sformatf("dst = %0dn",dst)};
sprint = {sprint , $sformatf("data_length = %0dn",data.size())};
foreach(data[i])
sprint = {sprint , $sformatf("data[%0d] = 'h%0xn", i, data[i])};
endfunction
endclass
interface rt_interface();
logic clock;
logic reset_n;
logic [15:0] din;
logic [15:0] frame_n;
logic [15:0] valid_n;
logic [15:0] dout;
logic [15:0] valido_n;
logic [15:0] busy_n;
logic [15:0] frameo_n;
endinterface
//********************************** stimulator **********************************//
class rt_stimulator;
virtual rt_interface intf;//class里的接口不能用端口的方式描述，需要添加virtual关键字，在类里面用接口的指针
//for debug purpose from waveform //定义检测状态的变量
typedef enum {DRV_RESET,DRV_IDLE,DRV_ADDR,DRV_PAD,DRV_DATA} drv_state_t;
drv_state_t dbg_state;
byte unsigned dbg_din_chnl0_data;
int src_chnl_status[int]; //关联数组，后面int：src_chnl的number；前面int：dest_chnl的Number ？？
//generator传送p给stimulator
rt_packet pkts[$];//定义stimulator中的的队列pkts
function void put_pkt(input rt_packet p);
pkts.push_back(p); //将generator中传过来的p放入stimulator的pkts中(在pkts队列尾插入p)
endfunction
task run();
fork
drive_reset(); //reset动作
get_packet_and_drive(); //drive_chnl动作
join_none
endtask
task drive_reset();//reset
forever begin
@(negedge intf.reset_n);
dbg_state <= DRV_RESET;
intf.din <= 0;
intf.frame_n <= '1;//等效16'hFFFF
intf.valid_n <= '1;
end
endtask
// 发送数据
task get_packet_and_drive();//drive_chnl
//rt_packet_t p;
@(negedge intf.reset_n);
repeat(10) @(posedge intf.clock);//延迟10个时钟周期
forever begin
automatic rt_packet p;//声明一个动态的
wait(pkts.size()>0);
p = pkts.pop_front(); //将p从队列pkts里面取出
fork//后台触发线程，触发线程在后台运行，继续执行剩下内容
begin
wait_src_chnl_avail(p);//判断src chnl是否被占用，是否需要等待
drive_chnl(p);//从P中拿到发送端口，目标端口，发送数据
set_src_chnl_avail(p);
end
join_none
end
endtask
task wait_src_chnl_avail(rt_packet p);//判断src chnl是否被占用，是否需要等待
if(!src_chnl_status.exists(p.src))//src_chnl_status关联数组里面不含p.src，(表示未占用任何dest_chnl,一开始不满足）
src_chnl_status[p.src] = p.dst;//表示当前正在使用src_chnl,对应dest_chnl就是p.dst（p.src端口在向p.dst端口发送数据）
else if(src_chnl_status[p.src] >= 0)//如果在给0,1,2...dest_chnl发送数据（被占用），需要等待,，否则不需要等待
wait(src_chnl_status[p.src] == -1);//直到src_chnl_status[p.src] == -1(自定义的dest_chnl端口数之外任意的数，表示未占用任何dest_chnl)
endtask
function set_src_chnl_avail(rt_packet p);
src_chnl_status[p.src] = -1;//如果chnl发送完后，把src_chnl置回来(自定义的dest_chnl端口数之外任意的数，表示未占用任何dest_chnl)
endfunction
task drive_chnl(rt_packet p);
$display("@%0t:[DRV] src_chnl[%0d] & dest_chnl[%0d] data trans started with packet: n%s",$time,p.src,p.dst,p.sprint());
// drive address phase 输入地址位阶段
for(int i=0;i<4;i++)begin //4 clock
@(posedge intf.clock);
dbg_state <=DRV_ADDR;
intf.din[p.src] <= p.dst[i];
intf.valid_n[p.src] <= $urandom_range(0,1); //valid_n在din的地址输入时间段可为任意值x
intf.frame_n[p.src] <= 1'b0; //frame_n需要为低
end
// drive pad phase //隔离阶段
for (int i=0;i<5;i++)begin //5 clock
@(posedge intf.clock);
dbg_state <=DRV_PAD;
intf.din[p.src] <= 1'b1;
intf.valid_n[p.src] <= 1'b1; //valid_n需为高电平
intf.frame_n[p.src] <= 1'b0; //frame_n需为低电平
end
// drive data phase 传输数据阶段
foreach(p.data[id])begin
for(int i=0;i<8;i++)begin
@(posedge intf.clock);
dbg_state <=DRV_DATA;
dbg_din_chnl0_data <= p.data[id];
intf.din[p.src] <= p.data[id][i];
intf.valid_n[p.src] <=1'b0;
intf.frame_n[p.src] <= (id == p.data.size()-1 && i == 7) ? 1'b1 : 1'b0;//packet最后一位输出数据时frameo_n为高
end
end
// drive idle phase 闲置（没有数据传输）阶段
@(posedge intf.clock);
dbg_state <=DRV_IDLE;
dbg_din_chnl0_data <= 0;
intf.din[p.src] <= 1'b0;
intf.valid_n[p.src] <= 1'b1;
intf.frame_n[p.src] <= 1'b1;
$display("@%0t: [DRV]src_chnl[%0d],dest_chnl[%0d] data trans finished",$time,p.src,p.dst);
endtask
endclass
//********************************** generator **********************************//
class rt_generator; //generator产生数据交给stimulator
rt_packet pkts[$]; //定义队列
function void put_pkt(input rt_packet p);
pkts.push_back(p); //将p放入队列pkts里面（在pkts队列尾插入p）
endfunction
task get_pkt(output rt_packet p);
wait(pkts.size() >0 ) //队列不为空
p = pkts.pop_front(); //将p从队列pkts里面取出，提取队列首元素
endtask
//generate a random packet
function void gen_pkt(int src = -1, int dst = -1);
endfunction
task run();
//TODO
endtask
endclass
//********************************** monitor **********************************//
class rt_monitor;
virtual rt_interface intf;
rt_packet in_pkts[16][$];
rt_packet out_pkts[16][$];
task run();
fork
mon_chnls();
join_none
endtask
task mon_chnls;
foreach(in_pkts[i]) begin
automatic int chid = i;
fork
mon_chnl_in(chid);//每个输入端口均调用mon_chnl_in任务，监测数据输入
mon_chnl_out(chid);//每个输出端口均调用mon_chnl_out任务，监测数据输入
join_none
end
endtask
task mon_chnl_in (bit[3:0]id);//监测数据输入的任务
rt_packet pkt; //定义结构体变量
forever begin
//clear content for the same struct variable。清除pkt
pkt = new();
pkt.src = id; //第id个输入端口
//monitor specific channel-in data and put it into the queue
// monitor address phase
@(negedge intf.frame_n[id]);//监测frame_n下降沿(frame_n由时钟驱动)
for(int i=0; i<4; i++)begin
@(negedge intf.clock); //frame_n下降沿后监测4个clk negedge
pkt.dst[i]= intf.din[id];
end
$display ("@%0t: [MON] src_chn1[%0d] & dest_chn1[%0d] data trans started",$time,pkt.src,pkt.dst);
//pass pad phase 不考虑pad阶段是否满足协议要求
repeat(5) @(negedge intf.clock);
do begin
pkt.data = new [pkt.data.size + 1](pkt.data);//创建动态数组并复制pkt.data
for ( int i=0; i<8; i++) begin
@(negedge intf.clock); //在8个clk negedge监测8bit数据
pkt.data[pkt.data.size-1][i] = intf.din[id];
end
end while(!intf.frame_n[id]);
in_pkts[id].push_back(pkt); //将monitor拿到的数据放入in_pkts
$display("@%0t:[MON] CH_IN src_chnl[%0d] &dest_chnl[%0d ] finished with packet: n%s",$time,pkt.src,pkt.dst,pkt.sprint());
end
endtask
task mon_chnl_out(bit[ 3:0]id);//监测数据输出的任务
rt_packet pkt;
forever begin
//clear content for the same struct variable
pkt = new();
pkt.src = 0;
pkt.dst = id;
@(negedge intf.frameo_n[id]);
$display( "@%0t: [MON] CH_OUT dest_chn1[%0d] data trans started",$time,pkt.dst);
do begin
pkt.data = new [ pkt.data.size + 1](pkt.data);
for(int i=0;i<8; i++) begin
@(negedge intf.clock iff !intf.valido_n[id]);//clock与valido_n信号同时为低
pkt.data[pkt.data.size-1][i]= intf.dout [id];
end
end while(!intf.frameo_n[id]);
out_pkts[id].push_back(pkt);
$display("@%0t: [MON] CH_OUT dest_chn1[%0d] data finished woth packet : n %s",$time,pkt.dst,pkt.sprint());
//monitor specific channel-out data and put it into the queue
end
endtask
endclass
//********************************** tb **********************************//
module tb;
bit clk,rstn;
logic [15:0] din, frame_n, valid_n;
logic [15:0] dout, valido_n, busy_n, frameo_n;
// 产生时钟，周期为10ns
initial
forever #5ns clk <= !clk;
// 产生复位信号
initial begin
#2ns rstn <= 1;
#10ns rstn <= 0;
#10ns rstn <= 1;
end
//例化router为DUT
router dut(
.reset_n(rstn),
.clock(clk),
.frame_n(intf.frame_n),
.valid_n(intf.valid_n),
.din(intf.din),
.dout(intf.dout),
.busy_n(intf.busy_n),
.valido_n(intf.valido_n),
.frameo_n(intf.frameo_n)
);
rt_interface intf();//例化接口
assign intf.reset_n = rstn;
assign intf.clock = clk;
//例化stimulator
rt_stimulator stim;
//例化Monitor
rt_monitor mon;
//例化generator
rt_generator gen;
initial begin : inst_init_proc
//build stage,例化
stim = new();
gen = new();
mon = new();
//connect sage，连接
stim.intf = intf;
mon.intf = intf;
//run stage，run
fork
stim.run();//class里面的函数不会自动调用，需要手动调用
gen.run();
mon.run();
join_none
end
initial begin:generate_data_proc//产生数据
rt_packet p;
#0; //wait for test components instantiated 以下句柄并没有在仿真开始前例化完成，需要进入上面initial里面，所以为了上述initial先执行，等module转化为class例化完成再使用这些句柄，添加延迟最小时间单元
p = new();
p.set_members(0,3,'{8'h33,8'h77});
gen.put_pkt(p);
p = new();//每次put_pkt都需要new一下
p.set_members(0,5,'{8'h55,8'h66});
gen.put_pkt(p);
p = new();
p.set_members(3,6,'{8'h77,8'h88,8'h22});
gen.put_pkt(p);
p = new();
p.set_members(4,7,'{8'haa,8'hcc,8'h33});
gen.put_pkt(p);
end
initial begin:genarator_to_stimulator_proc//取出genarator中的数据给stimulator
rt_packet p;
#0; //wait for test components instantiated
forever begin
gen.get_pkt(p);
stim.put_pkt(p);
end
end
endmodule 3.3 仿真结果
结果同上，硬件结构层次如下：
4. 增加checker组件
4.1 思路
Checker从Monitor中拿到monitor采样的输入数据为期望的输出、拿到monitor采样的输出数据为实际的输出，比较二者判断输入与输出是否相等。
4.2 改造后的tb.sv
class rt_packet;
bit [3:0] src;
bit [3:0] dst;
bit [7:0] data [];
function new();
endfunction
function void set_members(bit [3:0]src, bit [3:0]dst, bit[7:0]data []);
this.src = src;
this.dst = dst;
this.data = data;
endfunction
function string sprint();//打印packet信息的函数
sprint = {sprint , $sformatf("src = %0dn",src)};
sprint = {sprint , $sformatf("dst = %0dn",dst)};
sprint = {sprint , $sformatf("data_length = %0dn",data.size())};
foreach(data[i])
sprint = {sprint , $sformatf("data[%0d] = 'h%0xn", i, data[i])};
endfunction
function bit compare(rt_packet p);//输入exp_pkt
if(dst == p.dst && data == p.data)
compare = 1;
else
compare = 0;
endfunction
endclass
interface rt_interface();
logic clock;
logic reset_n;
logic [15:0] din;
logic [15:0] frame_n;
logic [15:0] valid_n;
logic [15:0] dout;
logic [15:0] valido_n;
logic [15:0] busy_n;
logic [15:0] frameo_n;
endinterface
//********************************** stimulator **********************************//
class rt_stimulator;
virtual rt_interface intf;//class里的接口不能用端口的方式描述，需要添加virtual关键字，在类里面用接口的指针
//for debug purpose from waveform //定义检测状态的变量
typedef enum {DRV_RESET,DRV_IDLE,DRV_ADDR,DRV_PAD,DRV_DATA} drv_state_t;
drv_state_t dbg_state;
byte unsigned dbg_din_chnl0_data;
int src_chnl_status[int]; //关联数组，后面int：src_chnl的number；前面int：dest_chnl的Number ？？
//generator传送p给stimulator
rt_packet pkts[$];//定义stimulator中的的队列pkts
function void put_pkt(input rt_packet p);
pkts.push_back(p); //将generator中传过来的p放入stimulator的pkts中(在pkts队列尾插入p)
endfunction
task run();
fork
drive_reset(); //reset动作
get_packet_and_drive(); //drive_chnl动作
join_none
endtask
task drive_reset();//reset
forever begin
@(negedge intf.reset_n);
dbg_state <= DRV_RESET;
intf.din <= 0;
intf.frame_n <= '1;//等效16'hFFFF
intf.valid_n <= '1;
end
endtask
// 发送数据
task get_packet_and_drive();//drive_chnl
//rt_packet_t p;
@(negedge intf.reset_n);
repeat(10) @(posedge intf.clock);//延迟10个时钟周期
forever begin
automatic rt_packet p;//声明一个动态的
wait(pkts.size()>0);
p = pkts.pop_front(); //将p从队列pkts里面取出
fork//后台触发线程，触发线程在后台运行，继续执行剩下内容
begin
wait_src_chnl_avail(p);//判断src chnl是否被占用，是否需要等待
drive_chnl(p);//从P中拿到发送端口，目标端口，发送数据
set_src_chnl_avail(p);
end
join_none
end
endtask
task wait_src_chnl_avail(rt_packet p);//判断src chnl是否被占用，是否需要等待
if(!src_chnl_status.exists(p.src))//src_chnl_status关联数组里面不含p.src，(表示未占用任何dest_chnl,一开始不满足）
src_chnl_status[p.src] = p.dst;//表示当前正在使用src_chnl,对应dest_chnl就是p.dst（p.src端口在向p.dst端口发送数据）
else if(src_chnl_status[p.src] >= 0)//如果在给0,1,2...dest_chnl发送数据（被占用），需要等待,，否则不需要等待
wait(src_chnl_status[p.src] == -1);//直到src_chnl_status[p.src] == -1(自定义的dest_chnl端口数之外任意的数，表示未占用任何dest_chnl)
endtask
function set_src_chnl_avail(rt_packet p);
src_chnl_status[p.src] = -1;//如果chnl发送完后，把src_chnl置回来(自定义的dest_chnl端口数之外任意的数，表示未占用任何dest_chnl)
endfunction
task drive_chnl(rt_packet p);
$display("@%0t:[DRV] src_chnl[%0d] & dest_chnl[%0d] data trans started with packet: n%s",$time,p.src,p.dst,p.sprint());
// drive address phase 输入地址位阶段
for(int i=0;i<4;i++)begin //4 clock
@(posedge intf.clock);
dbg_state <=DRV_ADDR;
intf.din[p.src] <= p.dst[i];
intf.valid_n[p.src] <= $urandom_range(0,1); //valid_n在din的地址输入时间段可为任意值x
intf.frame_n[p.src] <= 1'b0; //frame_n需要为低
end
// drive pad phase //隔离阶段
for (int i=0;i<5;i++)begin //5 clock
@(posedge intf.clock);
dbg_state <=DRV_PAD;
intf.din[p.src] <= 1'b1;
intf.valid_n[p.src] <= 1'b1; //valid_n需为高电平
intf.frame_n[p.src] <= 1'b0; //frame_n需为低电平
end
// drive data phase 传输数据阶段
foreach(p.data[id])begin
for(int i=0;i<8;i++)begin
@(posedge intf.clock);
dbg_state <=DRV_DATA;
dbg_din_chnl0_data <= p.data[id];
intf.din[p.src] <= p.data[id][i];
intf.valid_n[p.src] <=1'b0;
intf.frame_n[p.src] <= (id == p.data.size()-1 && i == 7) ? 1'b1 : 1'b0;//packet最后一位输出数据时frameo_n为高
end
end
// drive idle phase 闲置（没有数据传输）阶段
@(posedge intf.clock);
dbg_state <=DRV_IDLE;
dbg_din_chnl0_data <= 0;
intf.din[p.src] <= 1'b0;
intf.valid_n[p.src] <= 1'b1;
intf.frame_n[p.src] <= 1'b1;
$display("@%0t: [DRV]src_chnl[%0d],dest_chnl[%0d] data trans finished",$time,p.src,p.dst);
endtask
endclass
//********************************** generator **********************************//
class rt_generator; //generator产生数据交给stimulator
rt_packet pkts[$]; //定义队列
function void put_pkt(input rt_packet p);
pkts.push_back(p); //将p放入队列pkts里面（在pkts队列尾插入p）
endfunction
task get_pkt(output rt_packet p);
wait(pkts.size() >0 ) //队列不为空
p = pkts.pop_front(); //将p从队列pkts里面取出，提取队列首元素
endtask
//generate a random packet
function void gen_pkt(int src = -1, int dst = -1);
endfunction
task run();
//TODO
endtask
endclass
//********************************** monitor **********************************//
class rt_monitor;
virtual rt_interface intf;
rt_packet in_pkts[16][$];
rt_packet out_pkts[16][$];
task run();
fork
mon_chnls();
join_none
endtask
task mon_chnls;
foreach(in_pkts[i]) begin
automatic int chid = i;
fork
mon_chnl_in(chid);//每个输入端口均调用mon_chnl_in任务，监测数据输入
mon_chnl_out(chid);//每个输出端口均调用mon_chnl_out任务，监测数据输入
join_none
end
endtask
task mon_chnl_in (bit[3:0]id);//监测数据输入的任务
rt_packet pkt; //定义结构体变量
forever begin
//clear content for the same struct variable。清除pkt
pkt = new();
pkt.src = id; //第id个输入端口
//monitor specific channel-in data and put it into the queue
// monitor address phase
@(negedge intf.frame_n[id]);//监测frame_n下降沿(frame_n由时钟驱动)
for(int i=0; i<4; i++)begin
@(negedge intf.clock); //frame_n下降沿后监测4个clk negedge
pkt.dst[i]= intf.din[id];
end
$display ("@%0t: [MON] src_chn1[%0d] & dest_chn1[%0d] data trans started",$time,pkt.src,pkt.dst);
//pass pad phase 不考虑pad阶段是否满足协议要求
repeat(5) @(negedge intf.clock);
do begin
pkt.data = new [pkt.data.size + 1](pkt.data);//创建动态数组并复制pkt.data
for ( int i=0; i<8; i++) begin
@(negedge intf.clock); //在8个clk negedge监测8bit数据
pkt.data[pkt.data.size-1][i] = intf.din[id];
end
end while(!intf.frame_n[id]);
in_pkts[id].push_back(pkt); //将monitor拿到的数据放入in_pkts
$display("@%0t:[MON] CH_IN src_chnl[%0d] &dest_chnl[%0d ] finished with packet: n%s",$time,pkt.src,pkt.dst,pkt.sprint());
end
endtask
task mon_chnl_out(bit[ 3:0]id);//监测数据输出的任务
rt_packet pkt;
forever begin
//clear content for the same struct variable
pkt = new();
pkt.src = 0;
pkt.dst = id;
@(negedge intf.frameo_n[id]);
$display( "@%0t: [MON] CH_OUT dest_chn1[%0d] data trans started",$time,pkt.dst);
do begin
pkt.data = new [ pkt.data.size + 1](pkt.data);
for(int i=0;i<8; i++) begin
@(negedge intf.clock iff !intf.valido_n[id]);//clock与valido_n信号同时为低
pkt.data[pkt.data.size-1][i]= intf.dout [id];
end
end while(!intf.frameo_n[id]);
out_pkts[id].push_back(pkt);
$display("@%0t: [MON] CH_OUT dest_chn1[%0d] data finished woth packet : n %s",$time,pkt.dst,pkt.sprint());
//monitor specific channel-out data and put it into the queue
end
endtask
endclass
//********************************** checker **********************************//
class rt_checker;
int unsigned compare_count;
int unsigned error_count;
function new();//赋初值，可有可无，整形变量默认初始值为0
compare_count = 0;
error_count = 0;
endfunction
rt_packet exp_out_pkts[16][$];
rt_monitor mon;
task run();
foreach(exp_out_pkts[i])begin
automatic int chid = i;
fork
do_routing(chid);
do_compare(chid);
join_none
end
endtask
task do_routing(bit[3:0] id);//将monitor中采样到的输入数据放入期望的输出端队列中
rt_packet pkt;
forever begin
wait(mon.in_pkts[id].size > 0);
pkt = mon.in_pkts[id].pop_front();//从monitor中拿到in_pkts队列数据放入pkt
exp_out_pkts[pkt.dst].push_back(pkt);//将pkt数据放入对应期望的dest_chnl
end
endtask
task do_compare(bit[3:0] id);//比较采集的实际输出与期望输出
rt_packet exp_pkt, act_pkt;
forever begin
wait(mon.out_pkts[id].size > 0 && exp_out_pkts[id].size > 0);//实际采样数据与期望数据都有值
act_pkt = mon.out_pkts[id].pop_front();//实际数据为monitor采样的输出数据
exp_pkt = exp_out_pkts[id].pop_front();//期望数据为monitor采样到的输入数据
if(act_pkt.compare(exp_pkt))begin//如果exp_pkt与act_pkt比较成功，返回1
$display("[CHK] data compare success with packet : n%s",act_pkt.sprint());
end
else begin
$display("[CHK] data compare failure with actual packet : n%s nexpected packet : n%s", act_pkt.sprint(), exp_pkt.sprint());
error_count++;
end
compare_count++;
end
endtask
function void do_report();
$display("TOTAL COMPARING %0d times",compare_count);
if(!error_count)
$display("TEST PASSED!");
else begin
$display("TEST FAILED!");
$display("TOTAL ERROR %0d times", error_count);
end
endfunction
endclass
//********************************** tb **********************************//
module tb;
bit clk,rstn;
logic [15:0] din, frame_n, valid_n;
logic [15:0] dout, valido_n, busy_n, frameo_n;
// 产生时钟，周期为10ns
initial
forever #5ns clk <= !clk;
// 产生复位信号
initial begin
#2ns rstn <= 1;
#10ns rstn <= 0;
#10ns rstn <= 1;
end
//例化router为DUT
router dut(
.reset_n(rstn),
.clock(clk),
.frame_n(intf.frame_n),
.valid_n(intf.valid_n),
.din(intf.din),
.dout(intf.dout),
.busy_n(intf.busy_n),
.valido_n(intf.valido_n),
.frameo_n(intf.frameo_n)
);
rt_interface intf();//例化接口
assign intf.reset_n = rstn;
assign intf.clock = clk;
//例化stimulator
rt_stimulator stim;
//例化Monitor
rt_monitor mon;
//例化generator
rt_generator gen;
rt_checker chk;
initial begin : inst_init_proc
//build stage,例化
stim = new();
gen = new();
mon = new();
chk = new();
//connect sage，连接
stim.intf = intf;
mon.intf = intf;
chk.mon = mon;//check拿monitor句柄，即拿monitor中in_pkts与out_pkts队列
//run stage，run
fork
stim.run();//class里面的函数不会自动调用，需要手动调用
gen.run();
mon.run();
chk.run();
join_none
end
initial begin:generate_data_proc//产生数据
rt_packet p;
#0; //wait for test components instantiated 以下句柄并没有在仿真开始前例化完成，需要进入上面initial里面，所以为了上述initial先执行，等module转化为class例化完成再使用这些句柄，添加延迟最小时间单元
p = new();
p.set_members(0,3,'{8'h33,8'h77});
gen.put_pkt(p);
p = new();//每次put_pkt都需要new一下
p.set_members(0,5,'{8'h55,8'h66});
gen.put_pkt(p);
p = new();
p.set_members(3,6,'{8'h77,8'h88,8'h22});
gen.put_pkt(p);
p = new();
p.set_members(4,7,'{8'haa,8'hcc,8'h33});
gen.put_pkt(p);
end
initial begin:genarator_to_stimulator_proc//取出genarator中的数据给stimulator
rt_packet p;
#0; //wait for test components instantiated
forever begin
gen.get_pkt(p);
stim.put_pkt(p);
end
end
endmodule 4.3 仿真结果
DVE报告
dve> run 2us
2000000 ps
@105000:[DRV] src_chnl[0] & dest_chnl[3] data trans started with packet:
src = 0
dst = 3
data_length = 2
data[0] = ‘h33
data[1] = ‘h77@105000:[DRV] src_chnl[3] & dest_chnl[6] data trans started with packet:
src = 3
dst = 6
data_length = 3
data[0] = ‘h77
data[1] = ‘h88
data[2] = ‘h22@105000:[DRV] src_chnl[4] & dest_chnl[7] data trans started with packet:
src = 4
dst = 7
data_length = 3
data[0] = ‘haa
data[1] = ‘hcc
data[2] = ‘h33@150000: [MON] src_chn1[0] & dest_chn1[3] data trans started
@150000: [MON] src_chn1[3] & dest_chn1[6] data trans started
@150000: [MON] src_chn1[4] & dest_chn1[7] data trans started
@205000: [MON] CH_OUT dest_chn1[3] data trans started
@205000: [MON] CH_OUT dest_chn1[6] data trans started
@205000: [MON] CH_OUT dest_chn1[7] data trans started
@360000:[MON] CH_IN src_chnl[0] &dest_chnl[3 ] finished with packet:
src = 0
dst = 3
data_length = 2
data[0] = ‘h33
data[1] = ‘h77@365000: [DRV]src_chnl[0],dest_chnl[3] data trans finished
@365000:[DRV] src_chnl[0] & dest_chnl[5] data trans started with packet:
src = 0
dst = 5
data_length = 2
data[0] = ‘h55
data[1] = ‘h66@380000: [MON] CH_OUT dest_chn1[3] data finished woth packet :
src = 0
dst = 3
data_length = 2
data[0] = ‘h33
data[1] = ‘h77[CHK] data compare success with packet :
src = 0
dst = 3
data_length = 2
data[0] = ‘h33
data[1] = ‘h77@410000: [MON] src_chn1[0] & dest_chn1[5] data trans started
@440000:[MON] CH_IN src_chnl[3] &dest_chnl[6 ] finished with packet:
src = 3
dst = 6
data_length = 3
data[0] = ‘h77
data[1] = ‘h88
data[2] = ‘h22@440000:[MON] CH_IN src_chnl[4] &dest_chnl[7 ] finished with packet:
src = 4
dst = 7
data_length = 3
data[0] = ‘haa
data[1] = ‘hcc
data[2] = ‘h33@445000: [DRV]src_chnl[3],dest_chnl[6] data trans finished
@445000: [DRV]src_chnl[4],dest_chnl[7] data trans finished
@460000: [MON] CH_OUT dest_chn1[6] data finished woth packet :
src = 0
dst = 6
data_length = 3
data[0] = ‘h77
data[1] = ‘h88
data[2] = ‘h22@460000: [MON] CH_OUT dest_chn1[7] data finished woth packet :
src = 0
dst = 7
data_length = 3
data[0] = ‘haa
data[1] = ‘hcc
data[2] = ‘h33[CHK] data compare success with packet :
src = 0
dst = 6
data_length = 3
data[0] = ‘h77
data[1] = ‘h88
data[2] = ‘h22[CHK] data compare success with packet :
src = 0
dst = 7
data_length = 3
data[0] = ‘haa
data[1] = ‘hcc
data[2] = ‘h33@465000: [MON] CH_OUT dest_chn1[5] data trans started
@620000:[MON] CH_IN src_chnl[0] &dest_chnl[5 ] finished with packet:
src = 0
dst = 5
data_length = 2
data[0] = ‘h55
data[1] = ‘h66@625000: [DRV]src_chnl[0],dest_chnl[5] data trans finished
@640000: [MON] CH_OUT dest_chn1[5] data finished woth packet :
src = 0
dst = 5
data_length = 2
data[0] = ‘h55
data[1] = ‘h66[CHK] data compare success with packet :
src = 0
dst = 5
data_length = 2
data[0] = ‘h55
data[1] = ‘h66
硬件结构层次如下：
5. TestBench概览
