During the 4G dialing process, the dialing fails and the IP cannot be obtained.
However, the configuration files are provided by the manufacturer and should be no problem. So I decided to transplant the pppd dialing tool and give it a try.
Download: https://download.samba.org/pub/ppp/
Unzip and compile:
tar -vxf ppp-2.4.7.tar.gz
cd ppp-2.4.7/
mkdir __install
./configure --prefix=$PWD/__install
make CC=arm-hisiv500-linux-gcc
Generate pppd tools in the pppd directory:
root@ubuntu:/ppp-2.4.7# file pppd/pppd
pppd/pppd: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.7.0, not stripped
root@ubuntu:/ppp-2.4.7#
Generate chat tools in the chat directory:
root @ ubuntu: /ppp-2.4.7# file chat / chat
chat / chat: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU / Linux 3.7.0 , not stripped
root @ ubuntu: /ppp-2.4.7#
Then copy the generated file to the board and test it.
The test can dial successfully.
