updata

K210-PY/2023-05-22/fft_waterfall.py

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+# 导入模块和包
+from Maix import GPIO,I2S,FFT
+import image, lcd, math
+from fpioa_manager import fm
+import KPU as kpu
+
+# 变量配置
+sample_rate = 11025     # 采样率
+sample_points = 1024    # 采样点
+fft_points = 512        # FFT采样点
+hist_x_num = 128        # X轴长度
+
+# LCD初始化
+lcd.init()
+
+# 引脚初始化
+fm.register(20,fm.fpioa.I2S0_IN_D0, force=True)
+fm.register(18,fm.fpioa.I2S0_SCLK, force=True)
+fm.register(19,fm.fpioa.I2S0_WS, force=True)
+
+# I2S外设初始化
+rx = I2S(I2S.DEVICE_0)
+rx.channel_config(rx.CHANNEL_0, rx.RECEIVER, align_mode = I2S.STANDARD_MODE)
+rx.set_sample_rate(sample_rate)
+
+# 初始化一个图像
+img = image.Image(size=(128,128))   # 128*128大小
+img=img.to_grayscale()              # 变为灰度图
+
+# 处理循环
+while True:
+

README.md

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+<div align="center">
+  <img height="100px" alt="logo" src="https://cdn.lolicon.team/i/img/svg/logo.ico"/>
+  <p><em>Akatsuki SASO</em></p>
+</div>
+
+# 学习库
+
+沙雕们的学习库