verilog学习 (番外篇)

今天晚上吃饭的时候在想,Quartus好像有个功能是可以可视化生成模块,自己用的是Icarus Verilog小强大的东西却没有这个功能.于是乎我就下自己做个.使用工具Python + PIL.

PIL仅可以用来处理图片.也可以生成和绘制图片.

生成图片代码如下:

img = Image.new("RGB",(640,480))

绘制图片需要先导入包ImageDraw.然后代码如下

draw = ImageDraw.Draw(img)

#xxx 就可以绘制形状了具体的可以看官方文档 http://www.pythonware.com/library/pil/handbook/index.htm

del draw

有了这么多 够了直接贴代码了,中间大部分是用来计算宽度长度的.有好几块是硬编码的.

还有代码中没有使用类来封装设备(device)而是直接使用的 map组织的,还有分析代码的模块还没写,估计等我搞完编译原理再说,还有...... (额 太多了o(︶︿︶)o  我太懒了)

import Image
import ImageDraw

def generate_background(width,height,dot_width=12):
    img = Image.new("RGB",(width,height),(255,255,255))
    draw = ImageDraw.Draw(img)    
    draw.rectangle([(10,10),(img.size[0] - 10,img.size[1]-10)],outline=True)
    for x in range(0,width-20,dot_width):
        for y in range(0,height,dot_width):
            draw.point((x+10,y+10),fill=(50,50,50))
    del draw
    return img
    
    
def parse_code(filename):
    #simulate first    
    
    device = {}    
    device["pins_in"] = ["iA","iB"]
    device["pins_out"] = ["oAnd","oOr","oNot"]
    device["name"] = "count"    
    return device
    
def generate_device(device)    :
    pins_in = device["pins_in"]
    pins_out = device["pins_out"]
    pin_space = 20
    head_space = 20
    foot_space = 20
    side_space = 10    
    line_len  = 20
    
    pins = max(len(pins_in),len(pins_out))
    
    tmpimg = Image.new("RGB",(400,400))
    tmpdraw = ImageDraw.Draw(tmpimg)
    
    
    
    left_text_width = [tmpdraw.textsize(t)[0] for t in device["pins_in"]]
    right_text_width = [tmpdraw.textsize(t)[0] for t in device["pins_out"]]
    
    width = max(left_text_width)+max(right_text_width) + 30 + line_len*2    
    height = (pins-1)*pin_space+2*side_space+head_space+foot_space    
    img = Image.new("RGB",(width,height),(255,255,255))
    draw = ImageDraw.Draw(img)
    
    draw.rectangle([(line_len,head_space),(width - line_len,height - foot_space)],outline=True)
    #left_pins
    for i in range(len(pins_in)):
        lines = [(0,i*pin_space + head_space + side_space),
                    (line_len,i*pin_space + head_space + side_space)]
        draw.text((line_len+1,i*pin_space + head_space + side_space-2),pins_in[i],fill=(55,66,99))
        draw.line(lines,(15,48,64))
    #right_pins
    for i in range(len(pins_out)):
        lines = [(width - line_len , i*pin_space + head_space + side_space),
                    (width,i*pin_space + head_space + side_space)]
        text_width = draw.textsize(pins_out[i])[0]
        
        draw.text((width-line_len - text_width,i*pin_space + head_space + side_space - 4),
                        pins_out[i],fill=(94,64,66))
        draw.line(lines,(15,48,64))
        
    draw.text((1,1),device["name"],fill=(36,4,68))
    del draw
    return img
    
    
def build_all(filename):
    device = parse_code(filename)
    backimg = generate_background(640,480)
    deviceimg = generate_device(device)
    backimg.paste(deviceimg,(120,120,120+deviceimg.size[0],120+deviceimg.size[1]))
    
    return backimg
    
if __name__ == "__main__":
    img = build_all("count.v")
    img.show()

效果如下

额 还算行,就是字体太丑了点,给出Quartus的效果.如下:

好像对比下来我生成的图片跟丑了::>_<::

好吧.能用就行.

改下输入输出:

嗯多个引脚,少个引脚都还行.

好了 睡觉Zzzzzz.