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ARMmbed / mbed-os-example-cellular

This is an example based on mbed-os cellular APIs that demonstrates a TCP or UDP echo transaction with a public echo server.

Repository from Github https://github.comARMmbed/mbed-os-example-cellularRepository from Github https://github.comARMmbed/mbed-os-example-cellular

Example not running on custom Quectel port

iliapenev opened this issue · comments

commented

I'm doing custom Quectel MC60 port. It's based on MC26 target in mbed 5.14.
Modem is connected to STM Nucleo L476RG
Example could not be started. It could not get context.

Problem appears to be here.
https://github.com/ARMmbed/mbed-os/blob/master/features/cellular/framework/AT/AT_CellularContext.cpp#L490

I tried with lwip.ppp enabled and disabled

            "lwip.ipv4-enabled": true,
            "lwip.ipv6-enabled": false,
            "lwip.ethernet-enabled": false,
            "lwip.ppp-enabled": false,
            "lwip.tcp-enabled": true,
            "QUECTEL_MC60.provide-default": true

AT-Detailed-log.txt

Using
mbed-cli 1.10.1
gcc-arm-none-eabi-8-2018-q4-major

commented

ARM Internal Ref: IOTCELL-2244

commented

ARMmbed/mbed-os#11717 Solves problem.

Carefully checked all _at.lock _at.unlock pairs and I found where is problem.