樓主先了解一下什么是AT指令集。

多讀用戶手冊

這些模塊應(yīng)該有UART接口，將其余STM32的UART接口相連，按產(chǎn)品手冊的協(xié)議編寫程序，接收報文數(shù)據(jù)，解出GPS信息。

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Support standard GSM07.07,07.05 AT commands and Ai-Thinker extended commands;
A9 supports 3 serial ports, one download serial port and one AT command port;

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應(yīng)該會支持 AT Command.