189 lines
3.3 KiB
Python
189 lines
3.3 KiB
Python
import sys
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import datetime
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sys.path.append("../../")
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from migScope.tools.conv import *
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def get_bits(values, width, low, high =None):
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r = []
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for val in values:
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t = dec2bin(val,width)[::-1]
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if high == None:
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t = t[low]
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else:
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t = t[low:high]
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t = t[::1]
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t = int(t,2)
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r.append(t)
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return r
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class Var:
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def __init__(self,type , width , name, values=[], default="x"):
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self.type = type
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self.width = width
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self.name = name
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self.val = default
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self.values = values
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self.vcd_id = None
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def set_vcd_id(self, s):
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self.vcd_id = s
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def __len__(self):
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return len(self.values)
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def change(self, cnt):
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r = ""
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try :
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if self.values[cnt+1] != self.val:
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r += "b"
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r += dec2bin(self.values[cnt+1], self.width)
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r += " "
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r += self.vcd_id
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r += "\n"
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return r
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except :
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return r
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return r
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class Vcd:
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def __init__(self,timescale = "1ps", comment = ""):
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self.timescale = timescale
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self.comment = comment
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self.vars = []
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self.vcd_id = "!"
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self.cnt = -1
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def add(self, var):
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var.set_vcd_id(self.vcd_id)
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self.vcd_id = chr(ord(self.vcd_id)+1)
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self.vars.append(var)
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def __len__(self):
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l = 0
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for var in self.vars:
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l = max(len(var),l)
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return l
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def change(self):
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r = ""
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c = ""
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for var in self.vars:
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c += var.change(self.cnt)
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if c != "":
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r += "#"
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r += str(self.cnt+1)
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r += "\n"
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r += c
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return r
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def p_date(self):
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now = datetime.datetime.now()
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r = "$date\n"
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r += "\t"
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r += now.strftime("%Y-%m-%d %H:%M")
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r += "\n"
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r += "$end\n"
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return r
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def p_version(self):
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r = "$version\n"
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r += "\tmiscope VCD dump\n"
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r += "$end\n"
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return r
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def p_comment(self):
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r = "$comment\n"
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r += self.comment
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r += "\n$end\n"
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return r
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def p_timescale(self):
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r = "$timescale "
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r += self.timescale
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r += " $end\n"
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return r
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def p_scope(self):
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r = "$scope "
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r += self.timescale
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r += " $end\n"
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return r
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def p_vars(self):
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r = ""
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for var in self.vars:
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r += "$var "
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r += var.type
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r += " "
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r += str(var.width)
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r += " "
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r += var.vcd_id
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r += " "
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r += var.name
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r += " $end\n"
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return r
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def p_unscope(self):
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r = "$unscope "
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r += " $end\n"
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return r
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def p_enddefinitions(self):
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r = "$enddefinitions "
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r += " $end\n"
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return r
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def p_dumpvars(self):
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r = "$dumpvars\n"
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for var in self.vars:
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r += "b"
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r += dec2bin(var.val, var.width)
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r += " "
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r += var.vcd_id
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r+= "\n"
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r += "$end\n"
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return r
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def p_valuechange(self):
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r = ""
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for i in range(len(self)):
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r += self.change()
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self.cnt += 1
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return r
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def __repr__(self):
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r = ""
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r += self.p_date()
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r += self.p_version()
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r += self.p_comment()
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r += self.p_timescale()
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r += self.p_scope()
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r += self.p_vars()
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r += self.p_unscope()
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r += self.p_enddefinitions()
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r += self.p_dumpvars()
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r += self.p_valuechange()
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return r
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def write(self, filename):
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f = open(filename, "w")
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f.write(str(self))
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f.close()
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def main():
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myvcd = Vcd()
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myvcd.add(Var("wire", 1, "foo1", [0,1,0,1,0,1]))
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myvcd.add(Var("wire", 2, "foo2", [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0]))
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myvcd.add(Var("wire", 3, "foo3"))
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myvcd.add(Var("wire", 4, "foo4"))
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ramp = [i%128 for i in range(1024)]
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myvcd.add(Var("wire", 16, "ramp", ramp))
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print(myvcd)
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if __name__ == '__main__':
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main()
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