Merge pull request #109 from ARMmbed/minor_fixes

Minor fixes, added disconnect and readme update.

Author: Ari Parkkila

README.md

@@ -6,11 +6,11 @@ This is an example based on `mbed-os` cellular APIs that demonstrates a TCP or U
 
 This particular cellular application uses a cellular network and network-socket APIs that are part of [`mbed-os`](https://github.com/ARMmbed/mbed-os).
 
-The program uses a [generic cellular modem driver](https://github.com/ARMmbed/mbed-os/tree/master/features/netsocket/cellular/generic_modem_driver) using an external IP stack (LWIP) standard 3GPP AT 27.007 AT commands to setup the cellular modem and registers to the network.
+The program uses a [cellular modem driver](https://github.com/ARMmbed/mbed-os/tree/master/features/cellular/framework/API) using an external IP stack (LWIP) standard 3GPP AT 27.007 AT commands to setup the cellular modem and registers to the network.
 
 After registration, the driver opens a point-to-point protocol (PPP) pipe using LWIP with the cellular modem and connects to internet. This driver currently supports UART data connection type only between your cellular modem and MCU.
 
-For more information on Arm Mbed OS cellular APIs and porting guide, please visit the [Mbed OS cellular API](https://os.mbed.com/docs/latest/reference/cellular-api.html) and [contributing documentation](https://os.mbed.com/docs/latest/reference/contributing-connectivity.html#cellularinterface).
+For more information on Arm Mbed OS cellular APIs and porting guide, please visit the [Mbed OS cellular API](https://os.mbed.com/docs/latest/reference/cellular.html) and [contributing documentation](https://os.mbed.com/docs/latest/reference/contributing.html).
 
 ### Download the application
 
@@ -88,11 +88,11 @@ After you have defined `mbed-trace.enable: true`, you can set trace levels by ch
 
 ### Board support
 
-The [generic cellular modem driver](https://github.com/ARMmbed/mbed-os/tree/master/features/netsocket/cellular/generic_modem_driver) this application uses was written using only a standard AT command set. It uses PPP with an Mbed-supported external IP stack. These abilities make the driver essentially generic, or nonvendor specific. However, this particular driver is for onboard-modem types. In other words, the modem exists on the Mbed Enabled target as opposed to plug-in modules (shields). For more details, please see our [Mbed OS cellular documentation](https://os.mbed.com/docs/latest/reference/cellular-api.html).
+The [cellular modem driver](https://github.com/ARMmbed/mbed-os/tree/master/features/cellular/framework/API) in this example uses PPP with an Mbed-supported external IP stack. It supports targets when modem exists on the Mbed Enabled target as opposed to plug-in modules (shields). For more details, please see our [Mbed OS cellular documentation](https://os.mbed.com/docs/latest/reference/cellular-api.html).
 
 Currently supported boards with onboard modem chips are:
 
-[u-blox C027](https://os.mbed.com/platforms/u-blox-C027/)  
+[u-blox C027](https://os.mbed.com/platforms/u-blox-C027/)
 [MultiTech MTS Dragonfly](https://os.mbed.com/platforms/MTS-Dragonfly/)
 
 

main.cpp

@@ -105,7 +105,7 @@ void print_function(const char *format, ...)
 void dot_event()
 {
     while (true) {
-        Thread::wait(4000);
+        ThisThread::sleep_for(4000);
         if (iface && iface->is_connected()) {
             break;
         } else {
@@ -244,13 +244,20 @@ int main()
         retcode = test_send_recv();
     }
 
+    if (iface->disconnect() != NSAPI_ERROR_OK) {
+        print_function("\n\n disconnect failed.\n\n");
+    }
+
     if (retcode == NSAPI_ERROR_OK) {
         print_function("\n\nSuccess. Exiting \n\n");
     } else {
         print_function("\n\nFailure. Exiting \n\n");
     }
+
 #if MBED_CONF_MBED_TRACE_ENABLE
     trace_close();
+#else
+    dot_thread.terminate();
 #endif // #if MBED_CONF_MBED_TRACE_ENABLE
 
     return 0;

mbed_app.json

@@ -33,7 +33,6 @@
   },
     "target_overrides": {
         "*": {
-            "target.features_add": ["LWIP"],
             "mbed-trace.enable": false,
             "lwip.ipv4-enabled": true,
             "lwip.ethernet-enabled": false,