正弦、三角、锯齿、方波COE发生文件（python）

from math import * from matplotlib import pyplot as plt #COE文件的生成 for vivado # FILENAME = "512_square.coe" # 方波 FILENAME = "1024_sine.coe" # 正弦波 # FILENAME = "512_ramp.coe" # 锯齿波 #FILENAME = "512_triangle.coe" # 三角波 WIDTH = 16 DEPTH = 1024 hex_table = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'] points = [] out = [] file = open("D:/Vivado2017.4/simulation_examples/LUT_sin/vivado_prj_model_at7/" + FILENAME, "w+") file.write("memory_initialization_radix=16;\n") # 数据以16进制格式存储 file.write("memory_initialization_vector=") base = 2**(WIDTH - 1) - 1 for i in range(DEPTH): # var = int(base + (-1 if i >= DEPTH // 2 else 1) * base) # 方波 var = int(base + sin(i / DEPTH * 2 * pi) * base) # 正弦波 # var = int(i / DEPTH * (2 ** WIDTH - 1)) # 锯齿波 #var = int((1 - abs((i * 2 / (DEPTH - 1)) - 1)) * (2**WIDTH - 1)) # 三角波 if var >= 2**WIDTH: # 抹平超出范围的数据 var = 2**WIDTH - 1 points.append(var) var_hex = "" while (var > 0): var_hex += hex_table[var & 0xf] # var被转换成16进制相与 取低4位并转换为16进制存入var_hex中 var >>= 4 # 右移去掉已处理的4位 var_hex += '0' * ((WIDTH - 1) // 4 - len(var_hex) + 1) # 根据WIDTH补零 out.append(var_hex[::-1]) # 将var_hex中的内容翻转 for i in range(DEPTH): # 逆序存入文件 print(out[DEPTH - i - 1], end=",") file.write(out[DEPTH - i - 1] + ",") file.close() plt.plot(points) # 用于预览生成的波形 plt.show() # 用于预览生成的波形