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

mbed_app.json

Committer:
pimco01
Date:
2019-12-25
Revision:
51:f4b4b186f3a2
Parent:
50:5378d3f64df1

File content as of revision 51:f4b4b186f3a2:

{
    "config": {
        "sock-type": "UDP",
        "echo-server-hostname": {
            "help": "Echo server host name.",
            "value": "\"echo.mbedcloudtesting.com\""
        },
        "echo-server-port": {
            "help": "Echo server port number.",
            "value": 7
        },
        "trace-level": {
            "help": "Options are TRACE_LEVEL_ERROR,TRACE_LEVEL_WARN,TRACE_LEVEL_INFO,TRACE_LEVEL_DEBUG",
            "macro_name": "MBED_TRACE_MAX_LEVEL",
            "value": "TRACE_LEVEL_INFO"
        }
  },
    "target_overrides": {
        "*": {
            "target.network-default-interface-type": "CELLULAR",
            "mbed-trace.enable": true,
            "lwip.ipv4-enabled": true,
            "lwip.ethernet-enabled": false,
            "lwip.ppp-enabled": false,
            "lwip.tcp-enabled": true,
            "platform.stdio-convert-newlines": true,
            "platform.stdio-baud-rate": 115200,
            "platform.default-serial-baud-rate": 9600,
            "platform.stdio-buffered-serial": true,
            "cellular.debug-at": false,
            "nsapi.default-cellular-plmn": 0,
            "nsapi.default-cellular-sim-pin": "\"1234\"",
            "nsapi.default-cellular-apn": 0,
            "nsapi.default-cellular-username": 0,
            "nsapi.default-cellular-password": 0
        },
        "DISCO_L475VG_IOT01A": {
            "target.macros_add": [
                "CELLULAR_DEVICE=SERCOMM_TPB23"
            ],
            "target.components_add": ["SERCOMM_TPB23"],
            "SERCOMM_TPB23.tx":"D1",
            "SERCOMM_TPB23.rx":"D0",
            "SERCOMM_TPB23.provide-default":"true"
        }
    }
}