Networking/Discussion/General/Cellular modem and PPP/List of Posts
 
Forum Topic - Cellular modem and PPP: (4 Items)
   
Update
Todd Peterson(deleted)
03/29/2016 12:37 PM
post116030
Cellular modem and PPP   
We have an Beaglebone LTE cellular modem cape from Nimbelink. Using the instructions for setting up PPP on Linux (see 
http://nimbelink.com/wp-content/uploads/2015/11/Skywire-PPPd-for-LTE-Application-Note.pdf) the modem works as expected.

Tried the same thing under QNX 6.5 and have had no luck. Command that we run and scripts are below. Any suggestions? 
Nothing shows up in the syslog to give any clues as to why it does not work.

Thanks in advance,
Todd

# pppd call verizon 
Connect script failed 

# cat /etc/ppp/peers/verizon 
/dev/serusb6 
115200 
connect "/fs/emmc/usr/bin/chat v -V f /fs/emmc/etc/ppp/peers/verizon chat" 
noauth 
defaultroute 
usepeerdns 
local 
debug 
updetach
 
# cat /etc/ppp/peers/verizon-chat 
TIMEOUT 35 
ECHO ON 
ABORT '\nBUSY\r' 
ABORT '\nERROR\r' 
ABORT '\nNO ANSWER\r' 
ABORT '\nNO CARRIER\r' 
ABORT '\nNO DIALTONE\r' 
ABORT '\nRINGING\r\n\r\nRINGING\r' 
'' \rATZ 
OK 'ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0' 
OK AT+CGDCONT=3,"IP","vzwinternet","0.0.0.0",0,0 
OK ATD*99***3# 
CONNECT ''
Ankur Patel(deleted)
04/01/2016 11:08 AM
post116040
Re: Cellular modem and PPP   
As per my experience, First of all you have to check which chipset is used by modem?
Then check QNX have native driver for that chipset.
If it is, QNX will automatically give response.

What is aim behind this all stuff?

I was trying to send data wirelessly. In it, I can help you.
Todd Peterson(deleted)
04/04/2016 12:53 PM
post116043
Re: Cellular modem and PPP   
The modem itself communicates over UART, so the chipset is not the problem. PPP does not work the same as it does on 
Linux. We have decided to port the same PPP from Linux to QNX. Then, we should be able to figure out what the problem is
.

It would be nice if somebody could point us to the PPP for QNX source code.
Nick Reilly
04/04/2016 1:49 PM
post116045
Re: Cellular modem and PPP   
The pppd source code for QNX is part of the networking code and you will need a source code license to receive a copy of
 it.

I've had QNX pppd communicating to Linux pppd over a serial link, so there shouldn't be a problem as long as all the 
options are setup properly.

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