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https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/739477/cc2538-how-to-set-the-debug-serial-port
尊敬的所有人
如何设置调试串行端口？ 我 将 PA0和 PA1直接连接到 TTL 的 USB 端口调试工具、但没有打印日志、而且开发板上的 PA0和 PA1连接到 USB 芯片 PL2313、也没有打印。
那么，是否有任何必须设置的设置？
