ryan_13
Junior Member level 2
hi everyone!
I really need some help here... I want to control multiple GSM Modules using just one UART, but I can't find a good way of doing it. I'm using a SIM340DZ gsm module.
My original plan was to multiplex sim holders but it doesn't seem to be a very good idea due to some standard routing issues, etc.
Next, my idea is treat the modules as slaves in an SPI interface, but I'm not sure how to do this. (If AT commands are also sent to the module but through SPI pins.)
Is there any one here who can give me ideas on doing it? Even just ideas. I've worked with gsm modules but only through uart. I've also worked with Spi to control a real time clock and a sd card.
Please help... I really need ideas.. even just ideas..
---------- Post added at 14:01 ---------- Previous post was at 13:05 ----------
please... I really need help... thanks!
I really need some help here... I want to control multiple GSM Modules using just one UART, but I can't find a good way of doing it. I'm using a SIM340DZ gsm module.
My original plan was to multiplex sim holders but it doesn't seem to be a very good idea due to some standard routing issues, etc.
Next, my idea is treat the modules as slaves in an SPI interface, but I'm not sure how to do this. (If AT commands are also sent to the module but through SPI pins.)
Is there any one here who can give me ideas on doing it? Even just ideas. I've worked with gsm modules but only through uart. I've also worked with Spi to control a real time clock and a sd card.
Please help... I really need ideas.. even just ideas..
---------- Post added at 14:01 ---------- Previous post was at 13:05 ----------
please... I really need help... thanks!
