I want to design a board for SIM868 with ATMega328(nano) with Arduino bootloader.
I want to use single UART to interface SIM868's GSM and GNSS with Arduino Nano
I have gone through some hardware designs and came across this https://simcom.ee/documents/SIM868E/SIM868_TE%20KIT_User%20Guide_V1.00.pdf (https://simcom.ee/documents/SIM868E/SIM868_TE%20KIT_User%20Guide_V1.00.pdf)
in the above URL on page 18 "All-in-one" mode is mentioned.
I want to be sure that after using the same method mentioned in All-in-one mode will I be able to use the GSM and GNSS via single UART of Arduino Nano.
If not, then how can I achieve that?
Thank you in advance.