Fix bug in SMS::peek(), and allow for multiple CIDs in GPRS::ready()

[Patrick-McGuire]

In NB_SMS::peek() the incoming SMS message pointer would be incremented, clipping off the first letter of the incoming message. I found and fixed this issue.

In GPRS::ready() was not designed to handle multiple CIDs when connecting to GPRS. Firmware updates to the SARA-R4 allow support for multiple CIDs, and this library would hang when connecting if multiple CIDs were reported from AT+CGACT. I fixed this issue.

[CLAassistant]

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[github-actions]

Memory usage change @ f0e5bfc

Board	flash	%	RAM for global variables	%
arduino:samd:mkrnb1500	🔺 0 - +8	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/GPRSUdpNtpClient flash	%	examples/GPRSUdpNtpClient RAM for global variables	%	examples/NBSSLWebClient flash	%	examples/NBSSLWebClient RAM for global variables	%	examples/NBWebClient flash	%	examples/NBWebClient RAM for global variables	%	examples/ReceiveSMS flash	%	examples/ReceiveSMS RAM for global variables	%	examples/SendSMS flash	%	examples/SendSMS RAM for global variables	%	examples/Tools/ChooseRadioAccessTechnology flash	%	examples/Tools/ChooseRadioAccessTechnology RAM for global variables	%	examples/Tools/NBScanNetworks flash	%	examples/Tools/NBScanNetworks RAM for global variables	%	examples/Tools/PinManagement flash	%	examples/Tools/PinManagement RAM for global variables	%	examples/Tools/SerialSARAPassthrough flash	%	examples/Tools/SerialSARAPassthrough RAM for global variables	%	examples/Tools/TestGPRS flash	%	examples/Tools/TestGPRS RAM for global variables	%	examples/Tools/TestModem flash	%	examples/Tools/TestModem RAM for global variables	%
arduino:samd:mkrnb1500	0	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0

Click for full report CSV

Board,examples/GPRSUdpNtpClient<br>flash,%,examples/GPRSUdpNtpClient<br>RAM for global variables,%,examples/NBSSLWebClient<br>flash,%,examples/NBSSLWebClient<br>RAM for global variables,%,examples/NBWebClient<br>flash,%,examples/NBWebClient<br>RAM for global variables,%,examples/ReceiveSMS<br>flash,%,examples/ReceiveSMS<br>RAM for global variables,%,examples/SendSMS<br>flash,%,examples/SendSMS<br>RAM for global variables,%,examples/Tools/ChooseRadioAccessTechnology<br>flash,%,examples/Tools/ChooseRadioAccessTechnology<br>RAM for global variables,%,examples/Tools/NBScanNetworks<br>flash,%,examples/Tools/NBScanNetworks<br>RAM for global variables,%,examples/Tools/PinManagement<br>flash,%,examples/Tools/PinManagement<br>RAM for global variables,%,examples/Tools/SerialSARAPassthrough<br>flash,%,examples/Tools/SerialSARAPassthrough<br>RAM for global variables,%,examples/Tools/TestGPRS<br>flash,%,examples/Tools/TestGPRS<br>RAM for global variables,%,examples/Tools/TestModem<br>flash,%,examples/Tools/TestModem<br>RAM for global variables,%
arduino:samd:mkrnb1500,0,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0

[aentinger]

LGTM 👍