Hi,
I am trying to write wishbome master driver code. Strobe signal and ack signal should be high and when ack goes low .
But in my case strobe signal is going low when ack is still high . please help me on this
Below is my code
task wb_driver::do_write(seq_item req);
bit wb_ack_f = 0;
if(vif.reset==0) begin
@(this.vif.master_cb);
vif.master_cb.wb_adr_o <= req.wb_adr_o;
vif.master_cb.wb_we_o <= req.wb_we_o;
vif.master_cb.wb_cyc_o <= 1;
vif.master_cb.wb_stb_o <= 1;
vif.master_cb.wb_sel_o <= 1;
if(req.wb_we_o ==1) begin
vif.master_cb.wb_dat_o <= req.wb_dat_o;
while(wb_ack_f==0) begin
@(this.vif.wb_clk_i);
if (this.vif.wb_ack_i == 1) begin
wb_ack_f = 1;
end
end
end
@(negedge this.vif.wb_clk_i);
this.vif.master_cb.wb_cyc_o <= 0;
this.vif.master_cb.wb_stb_o <= 0;
end
endtask