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@ebarasyouta 感谢，确实是这个原因，最近没顾得上这边
没有，按照官方的固件写的
淘宝购买的模块，能使用串口正常烧录，烧录前串口循环打印freqchip，烧录后打印四次，但是AT指令没有反馈，求建议。