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| GSM module with SPI interface |
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| hussamaldean:
Hi all, I am looking for GSM module for my project which needs a GSM. however, the RS232 is slow and requires a lot of time. is there any GSM module that uses SPI interface rather than RS232 ? regards |
| Phoenix:
It's been my experience that the modules will use a UART as they follow the 3gpp standards. Modules with USB will present themselves as virtual comm ports to an OS. Can you use UART with flow control for extra speed? Sent from my G8441 using Tapatalk |
| hussamaldean:
--- Quote from: Phoenix on September 13, 2019, 07:34:43 am --- It's been my experience that the modules will use a UART as they follow the 3gpp standards. Modules with USB will present themselves as virtual comm ports to an OS. Can you use UART with flow control for extra speed? Sent from my G8441 using Tapatalk --- End quote --- we have 3G in only in Iraq, the problem I need to send data at rate of 1Hz but the module can't processor fast enough the AT commands, the delay is about 400mS between each AT command and burst data doesn't work either since the server will kick me out :( |
| Phoenix:
I don't think the cellular system is designed for that kind of real time data transfer. You can usually enter a raw data transfer mode once your socket is open. Then continually send data. Are you saying the server disconnects your socket if you do that? Can you aggregate data and send a minutes or 5 minutes worth in batches? Sent from my G8441 using Tapatalk |
| hussamaldean:
--- Quote from: Phoenix on September 13, 2019, 08:52:21 am ---I don't think the cellular system is designed for that kind of real time data transfer. You can usually enter a raw data transfer mode once your socket is open. Then continually send data. Are you saying the server disconnects your socket if you do that? Can you aggregate data and send a minutes or 5 minutes worth in batches? Sent from my G8441 using Tapatalk --- End quote --- the main purpose is to monitor a remote substation in real time which requires to send data every 1 seconds but the GSM module requires about 1 seconds to process each AT command :( |
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