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
Diff: SERCOMM/TPB23/SERCOMM_TPB23.cpp
- Revision:
- 47:006469f922f6
- Parent:
- 46:387c2d922a4a
--- a/SERCOMM/TPB23/SERCOMM_TPB23.cpp Thu Aug 08 08:36:54 2019 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,108 +0,0 @@ -/* - * Copyright (c) 2017, Arm Limited and affiliates. - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "SERCOMM_TPB23_CellularNetwork.h" -#include "SERCOMM_TPB23_CellularContext.h" -#include "SERCOMM_TPB23_CellularInformation.h" -#include "SERCOMM_TPB23.h" -#include "CellularLog.h" - -#define CONNECT_DELIM "\r\n" -#define CONNECT_BUFFER_SIZE (1280 + 80 + 80) // AT response + sscanf format -#define CONNECT_TIMEOUT 8000 - -using namespace events; -using namespace mbed; - -static const intptr_t cellular_properties[AT_CellularBase::PROPERTY_MAX] = { - AT_CellularNetwork::RegistrationModeLAC, // C_EREG - AT_CellularNetwork::RegistrationModeDisable, // C_GREG - AT_CellularNetwork::RegistrationModeDisable, // C_REG - 1, // AT_CGSN_WITH_TYPE - 0, // AT_CGDATA - 0, // AT_CGAUTH - 0, // AT_CNMI - 0, // AT_CSMP - 1, // AT_CMGF - 0, // AT_CSDH - 1, // PROPERTY_IPV4_STACK - 0, // PROPERTY_IPV6_STACK - 0, // PROPERTY_IPV4V6_STACK - 0, // PROPERTY_NON_IP_PDP_TYPE - 0, // PROPERTY_AT_CGEREP -}; - -SERCOMM_TPB23::SERCOMM_TPB23(FileHandle *fh) : AT_CellularDevice(fh) -{ - AT_CellularBase::set_cellular_properties(cellular_properties); -} - -nsapi_error_t SERCOMM_TPB23::get_sim_state(SimState &state) -{ - _at->lock(); - _at->flush(); - _at->cmd_start("AT+NCCID?"); - _at->cmd_stop(); - _at->resp_start("+NCCID:"); - if (_at->info_resp()) { - state = SimStateReady; - } else { - tr_warn("SIM not readable."); - state = SimStateUnknown; // SIM may not be ready yet - } - _at->resp_stop(); - return _at->unlock_return_error(); -} - -AT_CellularNetwork *SERCOMM_TPB23::open_network_impl(ATHandler &at) -{ - return new SERCOMM_TPB23_CellularNetwork(at); -} - -AT_CellularContext *SERCOMM_TPB23::create_context_impl(ATHandler &at, const char *apn, bool cp_req, bool nonip_req) -{ - return new SERCOMM_TPB23_CellularContext(at, this, apn, cp_req, nonip_req); -} - -AT_CellularInformation *SERCOMM_TPB23::open_information_impl(ATHandler &at) -{ - return new SERCOMM_TPB23_CellularInformation(at); -} - -nsapi_error_t SERCOMM_TPB23::init() -{ - _at->lock(); - _at->flush(); - _at->cmd_start("AT"); - _at->cmd_stop_read_resp(); - - _at->cmd_start("AT+CMEE="); // verbose responses - _at->write_int(1); - _at->cmd_stop_read_resp(); - - return _at->unlock_return_error(); -} - -#if MBED_CONF_SERCOMM_TPB23_PROVIDE_DEFAULT -#include "UARTSerial.h" -CellularDevice *CellularDevice::get_default_instance() -{ - static UARTSerial serial(MBED_CONF_SERCOMM_TPB23_TX, MBED_CONF_SERCOMM_TPB23_RX, MBED_CONF_SERCOMM_TPB23_BAUDRATE); - static SERCOMM_TPB23 device(&serial); - return &device; -} -#endif