大家好,我写了一段CPLD程序(EPM240T100I5N),编译,下载都可以,但程序就是不运行,连顶层模块里置个灯都不亮,想了一晚上百思不得其解
程序附件和原理图我已上传
顶层模块功能有两个:1.将需要的电机圈位数据通过串口上传到电脑;2.通过计数器采集电机编码器脉冲,并通过比较器与目标圈位做比较
管脚都和原理图对应一一做了约束
当引脚输出设置低电平的时候灯亮,我在顶层模块的这里
always @ (posedge Clkin)
if(!Resetb)
begin
DataIN<=16'd0;
//StartM<=0;
//CodeOUT<=16'd0;
//ROUT<=0;
//POUT<=0;
//YOUT<=3'd0;
LED1<=0;
LED2<=0;
LED3<=0;
LED4<=0;
LED5<=0;
LED6<=0;
SETCode<=16'd0;
MRun<=0;
Cnt1<=2'b0;
end
else
begin
SETCode<=16'd30000;
case(Cnt1)
2'b00:
begin
if(!StartM)
begin
Cnt1<=2'b01;
end
else
begin
Cnt1<=2'b0;
end
end
2'b01:
begin
MRun<=1;
if(YOUT==3'b001)
begin
Cnt1<=2'b10;
end
else
begin
Cnt1<=2'b01;
end
end
2'b10:
begin
MRun<=0;
Cnt1<=2'b0;
end
endcase
end
写了置灯亮的语句,正常情况下,应该一上电复位后,灯就亮,可是片子一上电灯不亮,所以我觉得是片子没有跑起来