4G module(SIM7670) library in C for Pico(RP2040)

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Hello,
We are developing a IoT product for our use case. We are using rp2040(pico) as our mcu.
My requirements is to develop library for 4g module (sim7670) .
1.Library need to be have all the errors handling.
2. Get connected with network and response it back with signal strength
3. Need to send and read receive sms
4. Mqtt protocol -configurations
4.1 mqtt broker connection
4.2 mqtt message public
4.3 received mqtt message

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