UBLOX cellular api's for UDP and TCP

Author: mudassar-ublox

features/cellular/framework/AT/AT_CellularStack.h

@@ -98,6 +98,7 @@ class AT_CellularStack : public NetworkStack, public AT_CellularBase
         bool started; // socket has been opened on modem stack
         bool tx_ready; // socket is ready for sending on modem stack
         bool rx_avail; // socket has data for reading on modem stack
+        volatile nsapi_size_t pending_bytes; // The number of received bytes pending
     };
 
     /**

features/cellular/framework/common/CellularTargets.h

@@ -30,7 +30,11 @@ namespace mbed {
 #elif TARGET_MTB_MTS_DRAGONFLY
 #define CELLULAR_DEVICE TELIT_HE910
 #elif TARGET_UBLOX_C030
+#ifdef TARGET_UBLOX_C030_N211
+#define CELLULAR_DEVICE UBLOX_AT
+#else
 #define CELLULAR_DEVICE UBLOX_PPP
+#endif
 #elif TARGET_UBLOX_C027
 #define CELLULAR_DEVICE UBLOX_PPP
 #else

features/cellular/framework/targets/UBLOX/AT/UBLOX_AT.cpp

@@ -0,0 +1,59 @@
+/*
+ * 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 "UBLOX_AT.h"
+#include "UBLOX_AT_CellularNetwork.h"
+#include "UBLOX_AT_CellularPower.h"
+
+using namespace mbed;
+using namespace events;
+
+UBLOX_AT::UBLOX_AT(EventQueue &queue) : AT_CellularDevice(queue)
+{
+}
+
+UBLOX_AT::~UBLOX_AT()
+{
+}
+
+CellularNetwork *UBLOX_AT::open_network(FileHandle *fh)
+{
+    if (!_network) {
+        ATHandler *atHandler = get_at_handler(fh);
+        if (atHandler) {
+            _network = new UBLOX_AT_CellularNetwork(*atHandler);
+            if (!_network) {
+                release_at_handler(atHandler);
+            }
+        }
+    }
+    return _network;
+}
+
+CellularPower *UBLOX_AT::open_power(FileHandle *fh)
+{
+    if (!_power) {
+        ATHandler *atHandler = get_at_handler(fh);
+        if (atHandler) {
+            _power = new UBLOX_AT_CellularPower(*atHandler);
+            if (!_power) {
+                release_at_handler(atHandler);
+            }
+        }
+    }
+    return _power;
+}

features/cellular/framework/targets/UBLOX/AT/UBLOX_AT.h

@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+#ifndef UBLOX_AT_H_
+#define UBLOX_AT_H_
+
+#include "AT_CellularDevice.h"
+
+namespace mbed {
+
+class UBLOX_AT : public AT_CellularDevice
+{
+
+public:
+	UBLOX_AT(events::EventQueue &queue);
+    virtual ~UBLOX_AT();
+
+public: // CellularDevice
+    virtual CellularNetwork *open_network(FileHandle *fh);
+    virtual CellularPower *open_power(FileHandle *fh);
+
+public: // NetworkInterface
+    void handle_urc(FileHandle *fh);
+};
+
+} // namespace mbed
+
+#endif // UBLOX_AT_H_