Hello:
I try to use cmux in my atmel board ( linux 4.4.4) , cross compile cmux and run successful.
It created 4 virtual tty for me. /dev/ttyGSM1 ~ /dev/ttyGSM4.
When i write data to /dev/ttyGSM1 by using shell, like this: printf "at\r\n" > /dev/ttyGSM1 ,data was sent successful, using salease logic analyze tool, can see the GPRS module responds with OK using GPRS0710 protocol.
But when i using microcom (linux serial port tools in busybox, like minicom) in command line:
microcom -s 115200 /dev/ttyGSM1, After that, microcom seems dead ! microcom cannot send/read anything, and I cannot close microcom by using CTRL+C.
I do not know who cause this problem, cmux,GPRS module or linux kernel ? or microcom ?
can you help me to solve this problem? Thanks!
Hello:
I try to use cmux in my atmel board ( linux 4.4.4) , cross compile cmux and run successful.
It created 4 virtual tty for me. /dev/ttyGSM1 ~ /dev/ttyGSM4.
When i write data to /dev/ttyGSM1 by using shell, like this: printf "at\r\n" > /dev/ttyGSM1 ,data was sent successful, using salease logic analyze tool, can see the GPRS module responds with OK using GPRS0710 protocol.
But when i using microcom (linux serial port tools in busybox, like minicom) in command line:
microcom -s 115200 /dev/ttyGSM1, After that, microcom seems dead ! microcom cannot send/read anything, and I cannot close microcom by using CTRL+C.
I do not know who cause this problem, cmux,GPRS module or linux kernel ? or microcom ?
can you help me to solve this problem? Thanks!