Import Mbed OS hard-float snapshot

connectivity/drivers/cellular/Altair/ALT1250/PPP/ALT1250_PPP.cpp

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2020, 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 "ALT1250_PPP.h"
+#include "ALT1250_PPP_CellularContext.h"
+#include "AT_CellularNetwork.h"
+#include "ALT1250_PPP_CellularNetwork.h"
+#include "CellularLog.h"
+#include "rtos/ThisThread.h"
+
+using namespace std::chrono;
+using namespace rtos;
+using namespace mbed;
+using namespace events;
+
+#define CONNECT_DELIM         "\r\n"
+#define CONNECT_BUFFER_SIZE   (1280 + 80 + 80) // AT response + sscanf format
+#define CONNECT_TIMEOUT       8000
+
+#if !defined(MBED_CONF_ALT1250_PPP_RST)
+#define MBED_CONF_ALT1250_PPP_RST    NC
+#endif
+
+static const intptr_t cellular_properties[AT_CellularDevice::PROPERTY_MAX] = {
+    AT_CellularNetwork::RegistrationModeLAC,// C_EREG
+    AT_CellularNetwork::RegistrationModeDisable,    // C_GREG
+    AT_CellularNetwork::RegistrationModeLAC,    // C_REG
+    1,  // AT_CGSN_WITH_TYPE
+    0,  // AT_CGDATA
+    0,  // AT_CGAUTH
+    1,  // AT_CNMI
+    1,  // AT_CSMP
+    1,  // AT_CMGF
+    1,  // AT_CSDH
+    1,  // PROPERTY_IPV4_STACK
+    0,  // PROPERTY_IPV6_STACK
+    0,  // PROPERTY_IPV4V6_STACK
+    0,  // PROPERTY_NON_IP_PDP_TYPE
+    1,  // PROPERTY_AT_CGEREP
+};
+
+ALT1250_PPP::ALT1250_PPP(FileHandle *fh, PinName rst, PinDirection pin_dir, PinMode pin_mode, bool value)
+    : AT_CellularDevice(fh),
+      _rst(rst, pin_dir, pin_mode, value)
+{
+    set_cellular_properties(cellular_properties);
+}
+
+AT_CellularContext *ALT1250_PPP::create_context_impl(ATHandler &at, const char *apn, bool cp_req, bool nonip_req)
+{
+    return new ALT1250_PPP_CellularContext(at, this, apn, cp_req, nonip_req);
+}
+
+AT_CellularNetwork *ALT1250_PPP::open_network_impl(ATHandler &at)
+{
+    return new ALT1250_PPP_CellularNetwork(at, *this);
+}
+
+nsapi_error_t ALT1250_PPP::soft_power_on()
+{
+    // check if modem is already ready
+    _at.lock();
+    _at.flush();
+    _at.set_at_timeout(30);
+    _at.cmd_start("AT");
+    _at.cmd_stop_read_resp();
+    nsapi_error_t err = _at.get_last_error();
+    _at.restore_at_timeout();
+    _at.unlock();
+
+    // modem is not responding to AT commands, power it on
+    if (err != NSAPI_ERROR_OK) {
+        tr_warn("Modem is not responding to AT commands, reset it");
+        if (_rst.is_connected()) {
+            _rst = 0;
+            ThisThread::sleep_for(100ms);
+            _rst = 1;
+        }
+        if (_at.sync(2000)) {
+            tr_warn("Modem is AT ready");
+            return NSAPI_ERROR_OK;
+        }
+        tr_warn("Modem is not AT ready following reset");
+        return _at.get_last_error();
+    }
+
+    return NSAPI_ERROR_OK;
+}
+
+#if MBED_CONF_ALT1250_PPP_PROVIDE_DEFAULT
+
+#if !NSAPI_PPP_AVAILABLE
+#error Must define lwip.ppp-enabled
+#endif
+
+#include "BufferedSerial.h"
+CellularDevice *CellularDevice::get_default_instance()
+{
+    static BufferedSerial serial(MBED_CONF_ALT1250_PPP_TX, MBED_CONF_ALT1250_PPP_RX, MBED_CONF_ALT1250_PPP_BAUDRATE);
+#if defined (MBED_CONF_ALT1250_PPP_RTS) && defined (MBED_CONF_ALT1250_PPP_CTS)
+    tr_debug("ALT1250_PPP flow control: RTS %d CTS %d", MBED_CONF_ALT1250_PPP_RTS, MBED_CONF_ALT1250_PPP_CTS);
+    serial.set_flow_control(SerialBase::RTSCTS, MBED_CONF_ALT1250_PPP_RTS, MBED_CONF_ALT1250_PPP_CTS);
+#endif
+    static ALT1250_PPP device(&serial, MBED_CONF_ALT1250_PPP_RST, PIN_OUTPUT, OpenDrainNoPull, 1);
+    return &device;
+}
+#endif
+