环境:ISE 10.1 语言:verilog HDL
出现的错误如下:
ERROR:Xst:880 - "mst_pulse_calculation.v" line 124: Cannot mix blocking and non blocking assignments on signal <Res_in_div>.
ERROR:Xst:880 - "mst_pulse_calculation.v" line 125: Cannot mix blocking and non blocking assignments on signal <DiffCnt_in_div>.
看英文的意思是不能对信号同时进行阻塞和非阻塞赋值。
看一下程序,是这样的:
reg [31:0] Res_in_div;
reg [15:0] DiffCnt_in_div;
//assign Res_wire = Res_reg;
//assign DiffCntWire = MeasureDiffCnt;
always @ (posedge clk_200m)
if(!rst)
begin
Res_in_div <= 0;
DiffCnt_in_div <= 0;
end
else
begin
Res_in_div = Res_reg;
DiffCnt_in_div = MeasureDiffCnt;
end
注意一下红色加粗的部分,一个赋值时用的是阻塞赋值“<=”,而另一处用的是非阻塞赋值“=”,改正即可解决,一般我们都用阻塞赋值。
div> div> <div id="treeSkill">div>