Development Information

AT instruction set (at_instruction_set): A9/A9G AT_Command_series

STM32 driver for A9/A9G (for reference only): program

CSDK_Github open source information: Open Source Information

C_SDK development kit: Development kit

Tool chain CSDTK4.2 download: CSDTK4.2 Extraction code: yc11

Hardware information (hardware_info): A9/A9G_hardware_info

Debugging tool (serial_tool): Serial debugging tool

FAQ document: FAQ

Precautions for mass production: GPRS mass production precautions

Module certificate: GPRS系列模组证书