JL Jieli AC696N Series Chip Debugging Tool: UART Serial Print Configuration and Online Tuning
Introduction The serial port is truly the "eyes" of a developer – that statement is no exaggeration. In embedded debugging, if you can't get logs out, it's like working blindfolded. The UART configuration on the JL Jieli AC696N is quite flexible. The debug print pin can be mapped arbitrarily, and the baud rate can be pushed up to 1M, making debugging very smooth. However, many beginners overlook one point: the serial port can not only output logs, but also connect to a PC tool for online tuning of audio effects. Parameters like EQ and DRC can be adjusted in real time without recompiling and flashing – you can hear the effect immediately. After tinkering with the AC696N development board, I've sorted out the configuration for both functions so I don't have to dig through the code every time. I. Configuring Serial Print In the board-level configuration header file (e.g., board_ac696x_demo_cfg.h), locate the UART0 configuration. Modify the following macros: #d...