Daniel Lee
Test code that Cat.M1 of BG96 for SK Telecom in Korea
This example showing how to use Cat.M1(BG96 module) of SK telecom network in Korea. You need a WIZnet BG96 board or can connect directly to M2Mnet BG96 module and development board.
Or
- BG96 RESET = D7
- BG96 PWRKEY = D9
- BG96 RX = D0(or D2)
- BG96 TX = D1(or D8)
- BG96 VCC = VCC(5V)
- BG96 GND = GND
Tested with
- NUCLEO_F429ZI
- DISCO_L475VG_IOT01A
- K66F
- K64F
Below boards are Need to connect board's D2 and D8 to BG96's TX and RX on mbed_app.json
- NUCLEO_L152RE
- NUCLEO_F401RE
"QUECTEL_BG96.tx": "D8", "QUECTEL_BG96.rx": "D2",
1. Import the application into your desktop:
mbed import https://os.mbed.com/users/Daniel_Lee/code/mbed-os-example-cellular-BG96/ cd mbed-os-example-cellular-BG96
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: Jul 24 2019, 14:55:22 [MAIN], plmn: NULL Establishing connection M2Mnet(BG96) Power ON [00005501ms][INFO][CELL]: New CellularContext (20004120) [00005501ms][INFO][CELL]: CellularContext plmn NULL [00005502ms][INFO][CELL]: CellularContext connect [00006503ms][INFO][CELL]: Start connecting (timeout 1000 ms) [00006512ms][INFO][CELL]: RSSI unknown [00006520ms][INFO][CELL]: Modem ready [00006524ms][INFO][CELL]: RSSI unknown [00006524ms][INFO][CELL]: Setup SIM (timeout 1000 ms) [00006529ms][INFO][CELL]: SIM is ready [00006558ms][INFO][CELL]: RSSI unknown [00006566ms][INFO][CELL]: Network registration (timeout 1000 ms) [00006570ms][INFO][CELL]: Continue after 1 seconds [00006964ms][ERR ][CELL]: AT overflow [00007576ms][INFO][CELL]: RSSI unknown [00007582ms][INFO][CELL]: Registering network => Attaching network [00007586ms][INFO][CELL]: RSSI unknown [00007586ms][INFO][CELL]: Attaching network (timeout 1000 ms) [00007660ms][INFO][CELL]: Found PDP context 7 [00007663ms][INFO][CELL]: Activate PDP context 7 [00009733ms][INFO][CELL]: Found PDP context 7 Connection Established. [00009742ms][INFO][CELL]: Socket 0 open [00009752ms][INFO][CELL]: Socket 1 open [00009786ms][INFO][CELL]: Socket 1 sent 43 bytes to 8.8.8.8 port 53 [00009967ms][INFO][CELL]: Socket 1 recv 71 bytes from 64:ff9b::808:808 port 53 [00009972ms][INFO][CELL]: Socket 1 closed TCP: connected with echo.mbedcloudtesting.com server [00010384ms][INFO][CELL]: Socket 0 sent 4 bytes to 2a05:d018:21f:3800:3164:2a5c7 TCP: Sent 4 Bytes to echo.mbedcloudtesting.com [00011257ms][INFO][CELL]: Socket 0 recv 4 bytes [00021263ms][INFO][CELL]: Socket 0 closed Received from echo server 4 Bytes [00021263ms][INFO][CELL]: CellularContext disconnect() [00021264ms][INFO][CELL]: cb: CellularContext disconnected Success. Exiting
5. Patched code
- Base modified location : mbed-os/features/cellular/framework/targets/QUECTEL/BG96
- https://github.com/DanielDmlee/mbed-os/commit/820e0a323641a88fdf5981e0d51219a3104c5ea0
- https://github.com/DanielDmlee/mbed-os/commit/26c3bcf75988eac1ad0b1ca347726da0ad636b64
If need more information such as how to test, please look at https://os.mbed.com/teams/mbed-os-examples/code/mbed-os-example-cellular/.
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;