Daniel Lee
This is an example based on mbed-os cellular APIs that demonstrates a TCP or UDP echo transaction with a public echo server. Included TPB23 NB-IoT module which is can use LGU+ in Korea.
This example is showing how to use the NB-IoT(SECOM TPB23 module) of LGU plus network in Korea. The NB-IoT module' seller provided a document on how to start based on Mbed OS 5.11. (Created by CodeZoo) This guide has been supported to the latest os version which included 5.12 ~ 5.15.
- if you need specific version of Mbed OS, please revision of TPB23_Driver and check it out.
- Pelion ready example code is here!
Requirement
- Need to check CodeZoo's s hardware a guide.
- Need a CodeZoo's NBIoT board and development board.
- Board picture & Jumper configure
- And also can use with mbed application shield, as shown below.
Tested with
- DISCO_L475VG_IOT01A - If you are in Korea, can buy here !
- NUCLEO_F429ZI - If you are in Korea, can buy here !
1. Import the application into your desktop
mbed import http://os.mbed.com/users/Daniel_Lee/code/mbed-os-example-cellular-TPB23/ cd mbed-os-example-cellular-TPB23
2. Compile and program
mbed compile -t <toolchain> -m <TARGET_BOARD>
(supported toolchains : GCC_ARM / ARM / IAR)
3. Download binary to a target board
4. Result
mbed-os-example-cellular Built: Aug 7 2019, 06:10:47 [MAIN], plmn: NULL Establishing connection [00000001ms][INFO][CELL]: New CellularContext (20000a08) [00000002ms][INFO][CELL]: CellularContext plmn NULL [00000003ms][INFO][CELL]: CellularContext connect [00000036ms][INFO][CELL]: RSSI -69 dBm [00000036ms][INFO][CELL]: Start connecting (timeout 1 s) [00000087ms][INFO][CELL]: RSSI -69 dBm [00000116ms][INFO][CELL]: Modem ready [00000146ms][INFO][CELL]: RSSI -69 dBm [00000146ms][INFO][CELL]: Setup SIM (timeout 1 s) [00001233ms][INFO][CELL]: Looked up APN internet [00001362ms][ERR ][CELL]: AT error code 50 [00001362ms][WARN][CELL]: Packet domain event reporting set failed! [00001393ms][INFO][CELL]: RSSI -65 dBm [00001393ms][INFO][CELL]: Network registration (timeout 180 s) [00001443ms][INFO][CELL]: Registering network => Attaching network [00001473ms][INFO][CELL]: RSSI -65 dBm [00001473ms][INFO][CELL]: Attaching network (timeout 60 s) [00001601ms][INFO][CELL]: Found PDP context 1 [00001649ms][INFO][CELL]: Activate PDP context 1 Connection Established. [00001671ms][INFO][CELL]: Socket 0 open [00001707ms][INFO][CELL]: Socket 1 open [00001748ms][INFO][CELL]: Socket create id: 1 [00001883ms][INFO][CELL]: Socket 1 sent 43 bytes to 8.8.8.8 port 53 [00004311ms][INFO][CELL]: Socket 1 recv 59 bytes from 8.8.8.8 port 53 [00004331ms][INFO][CELL]: Close socket: 1 error: 0 [00004331ms][INFO][CELL]: Socket 1 closed [00004373ms][INFO][CELL]: Socket create id: 1 TCP: connected with echo.mbedcloudtesting.com server [00004448ms][INFO][CELL]: Socket 0 sent 4 bytes to 52.215.34.155 port 7 TCP: Sent 4 Bytes to echo.mbedcloudtesting.com [00007560ms][INFO][CELL]: Socket 0 recv 4 bytes [00007580ms][INFO][CELL]: Close socket: 1 error: 0 [00007580ms][INFO][CELL]: Socket 0 closed Received from echo server 4 Bytes [00007581ms][INFO][CELL]: CellularContext disconnect() [00007630ms][INFO][CELL]: cb: CellularContext disconnected Success. Exiting
Revision 27:97054be1a741, committed 2018-11-22
- Comitter:
- mbed_official
- Date:
- Thu Nov 22 10:30:32 2018 +0000
- Parent:
- 26:348eec457e58
- Child:
- 28:232da3ce8a88
- Commit message:
- Changed to use NSAPI default values for pin, apn, plmn and credentials.
.
Commit copied from https://github.com/ARMmbed/mbed-os-example-cellular
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed_app.json | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Tue Nov 20 09:45:32 2018 +0000
+++ b/main.cpp Thu Nov 22 10:30:32 2018 +0000
@@ -22,21 +22,6 @@
#define UDP 0
#define TCP 1
-// SIM pin code goes here
-#ifndef MBED_CONF_APP_SIM_PIN_CODE
-# define MBED_CONF_APP_SIM_PIN_CODE "1234"
-#endif
-
-#ifndef MBED_CONF_APP_APN
-# define MBED_CONF_APP_APN "internet"
-#endif
-#ifndef MBED_CONF_APP_USERNAME
-# define MBED_CONF_APP_USERNAME NULL
-#endif
-#ifndef MBED_CONF_APP_PASSWORD
-# define MBED_CONF_APP_PASSWORD NULL
-#endif
-
// Number of retries /
#define RETRY_COUNT 3
@@ -228,15 +213,11 @@
#else
dot_thread.start(dot_event);
#endif // #if MBED_CONF_MBED_TRACE_ENABLE
+
+ // sim pin, apn, credentials and possible plmn are taken atuomtically from json when using get_default_instance()
iface = CellularBase::get_default_instance();
MBED_ASSERT(iface);
- /* Set Pin code for SIM card */
- iface->set_sim_pin(MBED_CONF_APP_SIM_PIN_CODE);
-
- /* Set network credentials here, e.g., APN */
- iface->set_credentials(MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD);
-
nsapi_error_t retcode = NSAPI_ERROR_NO_CONNECTION;
/* Attempt to connect to a cellular network */
--- a/mbed_app.json Tue Nov 20 09:45:32 2018 +0000
+++ b/mbed_app.json Thu Nov 22 10:30:32 2018 +0000
@@ -1,22 +1,6 @@
{
"config": {
"sock-type": "TCP",
- "sim-pin-code": {
- "help": "SIM PIN code, set to 0 if none",
- "value": "\"1234\""
- },
- "apn": {
- "help": "The APN string to use for this SIM/network, set to 0 if none",
- "value": "\"internet\""
- },
- "username": {
- "help": "The user name string to use for this APN, set to zero if none",
- "value": 0
- },
- "password": {
- "help": "The password string to use for this APN, set to 0 if none",
- "value": 0
- },
"echo-server-hostname": {
"help": "Echo server host name.",
"value": "\"echo.mbedcloudtesting.com\""
@@ -42,7 +26,12 @@
"platform.stdio-baud-rate": 115200,
"platform.default-serial-baud-rate": 115200,
"platform.stdio-buffered-serial": true,
- "cellular.debug-at": false
+ "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
}
}
}