GR851x OpenCPU SDK is a software development kit for GR851x series chips, a general-purpose SDK, compatible with rich AT commands and OpenCPU customer application development (water meter, gas meter, etc.), it provides rich and easy-to-use API (for water meter, gas meter, and other smart metering industries have been optimized), complete supporting tools and documents, and rich sample codes to facilitate customers to develop their own applications quickly and efficiently, and accelerate product implementation.
Bottom package mode
Support Light sleep and Deep sleep
On-demand (bottom package, customer code and communication firmware) DFOTA
SRAM data retention
Interrupt/hibernate recovery mechanism
RTC domain Sleep timer
Sleep state IO state is maintained
Rich protocols: CTM2M / OneNET / LwM2M / CoAP / UDP / MQTT / MQTTSN / HTTP / FTP
Support Keil/GCC/IAR
Perfect and easy-to-use tools
Rich examples and application documentation
Simple and easy to use API
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