Cellular: Basic driver for Quectel EC25/EC21

features/cellular/framework/targets/QUECTEL/EC2X/QUECTEL_EC2X.cpp

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+/*
+ * Copyright (c) 2019, 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 "QUECTEL_EC2X.h"
+
+#include "PinNames.h"
+#include "AT_CellularNetwork.h"
+#include "rtos/ThisThread.h"
+#include "UARTSerial.h"
+
+using namespace mbed;
+using namespace rtos;
+using namespace events;
+
+#if !defined(MBED_CONF_QUECTEL_EC2X_PWR)
+#define MBED_CONF_QUECTEL_EC2X_PWR    NC
+#endif
+
+#if !defined(MBED_CONF_QUECTEL_EC2X_RST)
+#define MBED_CONF_QUECTEL_EC2X_RST    NC
+#endif
+
+#if !defined(MBED_CONF_QUECTEL_EC2X_TX)
+#define MBED_CONF_QUECTEL_EC2X_TX    NC
+#endif
+
+#if !defined(MBED_CONF_QUECTEL_EC2X_RX)
+#define MBED_CONF_QUECTEL_EC2X_RX    NC
+#endif
+
+#if !defined(MBED_CONF_QUECTEL_EC2X_POLARITY)
+#define MBED_CONF_QUECTEL_EC2X_POLARITY    1 // active high
+#endif
+
+static const intptr_t cellular_properties[AT_CellularBase::PROPERTY_MAX] = {
+    AT_CellularNetwork::RegistrationModeLAC,    // C_EREG
+    AT_CellularNetwork::RegistrationModeLAC,    // C_GREG
+    AT_CellularNetwork::RegistrationModeLAC,    // C_REG
+    0,  // AT_CGSN_WITH_TYPE
+    1,  // AT_CGDATA
+    0,  // AT_CGAUTH
+    1,  // AT_CNMI
+    1,  // AT_CSMP
+    1,  // AT_CMGF
+    1,  // AT_CSDH
+    1,  // PROPERTY_IPV4_STACK
+    1,  // PROPERTY_IPV6_STACK
+    1,  // PROPERTY_IPV4V6_STACK
+    0,  // PROPERTY_NON_IP_PDP_TYPE
+    1,  // PROPERTY_AT_CGEREP
+};
+
+QUECTEL_EC2X::QUECTEL_EC2X(FileHandle *fh, PinName pwr, bool active_high, PinName rst)
+    : AT_CellularDevice(fh),
+      _active_high(active_high),
+      _pwr_key(pwr, !_active_high),
+      _rst(rst, !_active_high)
+{
+    AT_CellularBase::set_cellular_properties(cellular_properties);
+}
+
+CellularDevice *CellularDevice::get_default_instance()
+{
+    static UARTSerial serial(MBED_CONF_QUECTEL_EC2X_TX,
+                             MBED_CONF_QUECTEL_EC2X_RX,
+                             MBED_CONF_QUECTEL_EC2X_BAUDRATE);
+#if defined(MBED_CONF_QUECTEL_EC2X_RTS) && defined(MBED_CONF_QUECTEL_EC2X_CTS)
+    serial.set_flow_control(SerialBase::RTSCTS, MBED_CONF_QUECTEL_EC2X_RTS, MBED_CONF_QUECTEL_EC2X_CTS);
+#endif
+    static QUECTEL_EC2X device(&serial,
+                               MBED_CONF_QUECTEL_EC2X_PWR,
+                               MBED_CONF_QUECTEL_EC2X_POLARITY,
+                               MBED_CONF_QUECTEL_EC2X_RST);
+    return &device;
+}
+
+nsapi_error_t QUECTEL_EC2X::press_power_button(uint32_t timeout)
+{
+    _pwr_key = _active_high;
+    ThisThread::sleep_for(timeout);
+    _pwr_key = !_active_high;
+    ThisThread::sleep_for(100);
+
+    return NSAPI_ERROR_OK;
+}
+
+nsapi_error_t QUECTEL_EC2X::hard_power_on()
+{
+    return press_power_button(600);
+}
+
+nsapi_error_t QUECTEL_EC2X::hard_power_off()
+
+{
+    return press_power_button(750);
+}
+
+nsapi_error_t QUECTEL_EC2X::soft_power_on()
+{
+    if (_rst.is_connected()) {
+        _rst = _active_high;
+        ThisThread::sleep_for(460);
+        _rst = !_active_high;
+        ThisThread::sleep_for(100);
+
+        _at->lock();
+
+        _at->set_at_timeout(5000);
+        _at->resp_start();
+        _at->set_stop_tag("RDY");
+        bool rdy = _at->consume_to_stop_tag();
+        _at->set_stop_tag(OK);
+
+        _at->unlock();
+
+        if (!rdy) {
+            return NSAPI_ERROR_DEVICE_ERROR;
+        }
+    }
+
+    return NSAPI_ERROR_OK;
+}
+
+nsapi_error_t QUECTEL_EC2X::soft_power_off()
+{
+    return hard_power_off();
+}

features/cellular/framework/targets/QUECTEL/EC2X/QUECTEL_EC2X.h

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+/*
+ * Copyright (c) 2019, 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 QUECTEL_EC2X_H
+#define QUECTEL_EC2X_H
+
+#include "DigitalOut.h"
+#include "AT_CellularDevice.h"
+
+namespace mbed {
+
+class QUECTEL_EC2X : public AT_CellularDevice {
+public:
+
+    /**
+     * Constructs the Quectel EC2X series driver. It is mandatory to provide
+     * a FileHandle object, the power pin and the polarity of the pin.
+     * Providing reset pin is optional.
+     */
+    QUECTEL_EC2X(FileHandle *fh, PinName pwr, bool active_high, PinName rst = NC);
+
+    virtual nsapi_error_t hard_power_on();
+    virtual nsapi_error_t hard_power_off();
+    virtual nsapi_error_t soft_power_on();
+    virtual nsapi_error_t soft_power_off();
+
+private:
+    nsapi_error_t press_power_button(uint32_t timeout);
+    bool _active_high;
+    DigitalOut _pwr_key;
+    DigitalOut _rst;
+};
+
+} // namespace mbed
+
+#endif // QUECTEL_EC2X_H

features/cellular/framework/targets/QUECTEL/EC2X/mbed_lib.json

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+{
+    "name": "QUECTEL_EC2X",
+    "config": {
+        "tx": {
+            "help": "TX pin for serial connection. D1 assumed if Arduino Form Factor, needs to be set/overwritten otherwise.",
+            "value": null
+        },
+        "rx": {
+            "help": "RX pin for serial connection. D0 assumed if Arduino Form Factor, needs to be set/overwritten otherwise.",
+            "value": null
+        },
+        "rts": {
+            "help": "RTS pin for serial connection",
+            "value": null
+        },
+        "cts": {
+            "help": "CTS pin for serial connection",
+            "value": null
+        },
+        "pwr": {
+            "help": "Power control pin",
+            "value": null
+        },
+        "rst": {
+            "help": "Reset control pin",
+            "value": null
+        },
+        "polarity": {
+            "help": "Pin polarity, 1 = Active high, 0 = Active low",
+            "value": null
+        },
+        "baudrate" : {
+            "help": "Serial connection baud rate",
+            "value": 115200
+        },
+        "provide-default": {
+            "help": "Provide as default CellularDevice [true/false]",
+            "value": false
+        }
+    }
+}