delay

Altera_Forum · ‎06-21-2010

hello,

i have a little question for you, guys....how can i put a delay between two if instructions (the second if to be executed after a few seconds)..........the code is in verilog.

thx, tastax

Altera_Forum · ‎06-21-2010

--- Quote Start ---

hello,

i have a little question for you, guys....how can i put a delay between two if instructions (the second if to be executed after a few seconds)..........the code is in verilog.

thx, tastax

--- Quote End ---

Use counter.

// very simpy without reset.

reg [7:0] cnt;

always @ (posedge clk) begin

cnt <= cnt + 1'b1;

if(condition1 && (cnt == 7'h0))begin ..... end

if(condition2 && (cnt == 7'h3))begin ..... end

if(condition3 && (cnt == 7'h13))begin ..... end

end

Altera_Forum · ‎06-22-2010

we have reset, also. The code is:

always@(posedge iCLK or negedge iRST_n)

begin

if (!iRST_n) begin

pattern_data <= 8'h00;

cnt <= 0;

r1<=0;

r2<=0;

r3<=0;

r4<=0;

r5<=0;

r6<=0;

r7<=0;

r8<=0;

r9<=0;

nr1<=0;

nr2<=0;

nr3<=0;

nr4<=0;

nr5<=0;

nr6<=0;

nr7<=0;

nr8<=0;

nr9<=0;

culoare<=1;

once1<=0;

once2<=0;

once3<=0;

once4<=0;

once5<=0;

once6<=0;

once7<=0;

once8<=0;

once9<=0;

cul1<=0;

cul2<=0;

c1<=0;

c2<=0;

c3<=0;

c4<=0;

c5<=0;

c6<=0;

c7<=0;

c8<=0;

c9<=0;

end

else if((x_cnt>(Hsync_Blank-1))&&(x_cnt<(H_LINE-Hsync_Front_Porch)))

begin

pattern_data <= graycnt;

red_1 <= pattern_data;

green_1 <= 0;

blue_1 <= 0;

cnt <= cnt + 1'b1;

if ((iY_COORD>100)&&(iY_COORD<1370)&&(iX_COORD>100)&&(iX_COORD<1353)&&(x_cnt>750)&&(x_cnt<1010)&&(y_cnt>358)&&(y_cnt<511)) begin

r1<=1;

r2<=1;

if ((once1 == 1'b0)&&(culoare<=9)) begin

culoare<=culoare+1;

nr1<=culoare;

once1=1'b1;

nr2<=culoare+1;

if (culoare%2==1) begin

cul1<=cul1+1;

c1<=1;

end

else if(culoare%2==0) begin

cul2<=cul2+1;

c1<=2;

end

if ((r1)&&(x_cnt>750 )&&(x_cnt<1010)&&(y_cnt>358)&&(y_cnt<511)) // r1 "if"

begin

if ((nr1%2==1)) begin

pattern_data <= 200;

blue_1 <= pattern_data;

end

else if ((nr1%2==0)&&(nr1!=0)) begin

pattern_data <= 200;

green_1 <= pattern_data;

end

if ((iY_COORD>1371)&&(iY_COORD<2677)&&(iX_COORD>100)&&(iX_COORD<1353)&&(x_cnt>485)&&(x_cnt<742)&&(y_cnt>358)&&(y_cnt<511)) begin

r2<=1;

if ((once2 == 1'b0)&&(culoare<=9)) begin

culoare<=culoare+1;

nr2<=culoare;

once2=1'b1;

if (culoare%2==1) begin

cul1<=cul1+1;

c2<=1;

end

else if(culoare%2==0) begin

cul2<=cul2+1;

c2<=2;

end

if ((r2)&&(x_cnt>485)&&(x_cnt<742)&&(y_cnt>358)&&(y_cnt<511)) // r2 "if"

begin

if (nr2%2==1) begin

pattern_data <= 200;

blue_1 <= pattern_data;

end

else if ((nr2%2==0)&&(nr2!=0)) begin

pattern_data <= 200;

green_1 <= pattern_data;

end

between the r1 "if" and r2 "if" we have to produce a delay.

thx