SUNGTAE KIM
Set specific IP Address/Port
Overview
This code could be access via Cat.M1(BG96 module) of SK telecom network in Korea. Need a WIZnet IoT Shield BG96 board and development board. The code forked Daniel_Lee's mbed-os-example-cellular-BG96 repository(https://os.mbed.com/users/Daniel_Lee/code/mbed-os-example-cellular-BG96/) and added some features.
This example is known to work great on the following platforms:
Requirement
- FRDM-K64F or FRDM-K66F
- WIZnet IoT Shield BG96 board
- USIM card
Example functionality
This example showcases the following device functionality:
1. Import into Compiler
2. Compile and Program
3. If successfully connect to cellular networks(SKTelecom) then you can get below message
Device's Result
include the mbed library with this snippet
mbed-os-example-cellular Built: Sep 6 2019, 07:06:26 [MAIN], plmn: NULL Establishing connection M2Mnet(BG96) Power ON [00005500ms][INFO][CELL]: New CellularContext (20004120) [00005500ms][INFO][CELL]: CellularContext plmn NULL [00005501ms][INFO][CELL]: CellularContext connect [00006502ms][INFO][CELL]: Start connecting (timeout 1000 ms) [00006511ms][INFO][CELL]: RSSI unknown [00006519ms][INFO][CELL]: Modem ready [00006523ms][INFO][CELL]: RSSI unknown [00006523ms][INFO][CELL]: Setup SIM (timeout 1000 ms) [00006528ms][INFO][CELL]: SIM is ready [00006555ms][INFO][CELL]: RSSI unknown [00006563ms][INFO][CELL]: Network registration (timeout 1000 ms) [00006567ms][INFO][CELL]: Continue after 1 seconds [00006688ms][ERR ][CELL]: AT overflow [00007572ms][INFO][CELL]: RSSI unknown [00007578ms][INFO][CELL]: Registering network => Attaching network [00007582ms][INFO][CELL]: RSSI unknown [00007582ms][INFO][CELL]: Attaching network (timeout 1000 ms) [00007606ms][INFO][CELL]: Found PDP context 2 [00007609ms][INFO][CELL]: Activate PDP context 2 [00009626ms][INFO][CELL]: Found PDP context 2 Connection Established. [00009635ms][INFO][CELL]: Socket 0 open [00009741ms][INFO][CELL]: Socket 0 sent 4 bytes to 222.98.173.203 port 7878 TCP: Sent 4 Bytes to 222.98.173.203 [00010873ms][INFO][CELL]: Socket 0 recv 4 bytes [00011421ms][INFO][CELL]: Socket 0 closed Received from server 4 Bytes [00011421ms][INFO][CELL]: CellularContext disconnect() [00011422ms][INFO][CELL]: cb: CellularContext disconnected Success. Exiting
Server Result
Diff: README.md
- Revision:
- 11:23ea0907186e
- Parent:
- 6:5678c0b6f74e
- Child:
- 16:bf6ed28b4d08
--- a/README.md Wed Jun 06 07:45:26 2018 +0100
+++ b/README.md Mon Jun 18 09:00:19 2018 +0100
@@ -61,13 +61,10 @@
### Turning modem AT echo trace on
-If you like details and wish to know about all the AT interactions between the modem and your driver, turn on the modem AT echo trace. Set the `modem_trace` field value to be true.
+If you like details and wish to know about all the AT interactions between the modem and your driver, turn on the modem AT echo trace.
```json
- "modem_trace": {
- "help": "Turns AT command trace on/off from the cellular modem, defaults to off",
- "value": true
- },
+ "cellular.debug-at": true
```
### Turning on the tracing and trace level
@@ -76,8 +73,8 @@
```"target_overrides": {
"*": {
- "target.features_add": ["LWIP", "COMMON_PAL"],
- "mbed-trace.enable": false,
+ "target.features_add": ["LWIP"],
+ "mbed-trace.enable": true,
```
After you have defined `mbed-trace.enable: true`, you can set trace levels by changing value in `trace-level`
@@ -126,4 +123,12 @@
## Troubleshooting
-If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it.
+* Make sure the fields `sim-pin-code`, `apn`, `username` and `password` from the `mbed_app.json` file are filled in correctly. The correct values should appear in the user manual of the board if using eSIM or in the details of the SIM card if using normal SIM.
+* Enable trace flag to have access to debug information `"mbed-trace.enable": true`.
+* Try both `TCP` and `UDP` socket types.
+* Try both `"lwip.ppp-enabled": true` and `"lwip.ppp-enabled": false`.
+* The modem may support only a fixed baud-rate, such as `"platform.default-serial-baud-rate": 9600`.
+* The modem and network may only support IPv6 in which case `"lwip.ipv6-enabled": true` shall be defined.
+* The SIM and modem must have compatible cellular technology (3G, 4G, NB-IoT, ...) supported and cellular network available.
+
+If you have problems to get started with debugging, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it.