Securely locking down the device plays off against being able to update it. Ideally you want to disable JTAG/SWD interfaces and make them difficult to access. This of course does not protect you from people with physical access to your device, and th

安富莱开发板配置的I2S音频CODEC芯片为WM8978。STM32通过I2C总线控制WM8978，通过I2S接口传输（录和放）音频数据。(The I2S audio codec chip configured by anfulai development board is wm8978. STM32 controls wm8978 through I2C bus and transmits (records and plays) audio data through I2S interface