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
Diff: main.cpp
- Revision:
- 11:23ea0907186e
- Parent:
- 6:5678c0b6f74e
- Child:
- 13:4bea5334b419
--- a/main.cpp Wed Jun 06 07:45:26 2018 +0100
+++ b/main.cpp Mon Jun 18 09:00:19 2018 +0100
@@ -17,7 +17,6 @@
#include "mbed.h"
#include "common_functions.h"
#include "UDPSocket.h"
-#include "OnboardCellularInterface.h"
#include "CellularLog.h"
#define UDP 0
@@ -41,16 +40,13 @@
// Number of retries /
#define RETRY_COUNT 3
-
-
-// CellularInterface object
-OnboardCellularInterface iface;
+CellularBase *iface;
// Echo server hostname
-const char *host_name = "echo.mbedcloudtesting.com";
+const char *host_name = MBED_CONF_APP_ECHO_SERVER_HOSTNAME;
// Echo server port (same for TCP and UDP)
-const int port = 7;
+const int port = MBED_CONF_APP_ECHO_SERVER_PORT;
static rtos::Mutex trace_mutex;
@@ -80,10 +76,16 @@
mbed_trace_mutex_wait_function_set(trace_wait);
mbed_trace_mutex_release_function_set(trace_release);
+
+ mbed_cellular_trace::mutex_wait_function_set(trace_wait);
+ mbed_cellular_trace::mutex_release_function_set(trace_release);
}
static void trace_close()
{
+ mbed_cellular_trace::mutex_wait_function_set(NULL);
+ mbed_cellular_trace::mutex_release_function_set(NULL);
+
mbed_trace_free();
}
#endif // #if MBED_CONF_MBED_TRACE_ENABLE
@@ -104,7 +106,7 @@
{
while (true) {
Thread::wait(4000);
- if (!iface.is_connected()) {
+ if (!iface->is_connected()) {
trace_mutex.lock();
printf(".");
fflush(stdout);
@@ -123,8 +125,8 @@
nsapi_error_t retcode = NSAPI_ERROR_OK;
uint8_t retry_counter = 0;
- while (!iface.is_connected()) {
- retcode = iface.connect();
+ while (!iface->is_connected()) {
+ retcode = iface->connect();
if (retcode == NSAPI_ERROR_AUTH_FAILURE) {
print_function("\n\nAuthentication Failure. Exiting application\n");
} else if (retcode == NSAPI_ERROR_OK) {
@@ -154,14 +156,14 @@
UDPSocket sock;
#endif
- retcode = sock.open(&iface);
+ retcode = sock.open(iface);
if (retcode != NSAPI_ERROR_OK) {
print_function("UDPSocket.open() fails, code: %d\n", retcode);
return -1;
}
SocketAddress sock_addr;
- retcode = iface.gethostbyname(host_name, &sock_addr);
+ retcode = iface->gethostbyname(host_name, &sock_addr);
if (retcode != NSAPI_ERROR_OK) {
print_function("Couldn't resolve remote host: %s, code: %d\n", host_name, retcode);
return -1;
@@ -222,14 +224,14 @@
#else
dot_thread.start(dot_event);
#endif // #if MBED_CONF_MBED_TRACE_ENABLE
+ iface = CellularBase::get_default_instance();
+ MBED_ASSERT(iface);
+
/* Set Pin code for SIM card */
- iface.set_sim_pin(MBED_CONF_APP_SIM_PIN_CODE);
+ 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);
-
- /* Set the modem debug on/off */
- iface.modem_debug_on(MBED_CONF_APP_MODEM_TRACE);
+ iface->set_credentials(MBED_CONF_APP_APN, MBED_CONF_APP_USERNAME, MBED_CONF_APP_PASSWORD);
nsapi_error_t retcode = NSAPI_ERROR_NO_CONNECTION;