I am developing a product, where I have a master board with 4G LTE connection, and 3-5 slaves must send data to this master board.
I want to use the Grove Wio E5, but I do not know how to exactly do it.
I just want to use them as peripherals, not modifying their firmware, and interfacing them with the UART port and AT commands.
Could you please give me a short AT commands list to set and perform this on Master and slaves sides, or if you have any examples on achieving this.
Thank you so much