RAK_QUECTEL_BG96.cpp

/* mbed Microcontroller Library
 * Copyright (c) 2018 ARM Limited
 *
 * 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.
 */

#if MBED_CONF_NSAPI_PRESENT

#include "RAK_QUECTEL_BG96.h"

#include "gpio_api.h"
#include "platform/mbed_thread.h"
#include "PinNames.h"
#include "UARTSerial.h"

#include "mbed-trace/mbed_trace.h"

#define TRACE_GROUP "MYMODEM"

#define WAIT_AFTER_POWR_CHANGED	(1000)	// [msec.]


using namespace mbed;


RAK_QUECTEL_BG96::RAK_QUECTEL_BG96(FileHandle *fh) : QUECTEL_BG96(fh)
{
    onboard_modem_init();
}

nsapi_error_t RAK_QUECTEL_BG96::hard_power_on()
{
    onboard_modem_init();
    return NSAPI_ERROR_OK;
}

nsapi_error_t RAK_QUECTEL_BG96::hard_power_off()
{
    onboard_modem_deinit();
    return NSAPI_ERROR_OK;
}

nsapi_error_t RAK_QUECTEL_BG96::soft_power_on()
{
    onboard_modem_power_up();
    return NSAPI_ERROR_OK;
}

nsapi_error_t RAK_QUECTEL_BG96::soft_power_off()
{
    onboard_modem_power_down();
    return NSAPI_ERROR_OK;
}


void RAK_QUECTEL_BG96::onboard_modem_init()
{
    gpio_t gpio;

    tr_debug("onboard_init M_POWR %d PWRKEY %d RESET_MODULE %d \n", M_POWR, PWRKEY, RESET_MODULE);

    // Power Supply
    gpio_init_out_ex(&gpio, M_POWR, 0);
    // Turn On/Off
    gpio_init_out_ex(&gpio, PWRKEY, 0);
    gpio_init_out_ex(&gpio, RESET_MODULE, 0);
    // Status Indication
    //gpio_init_in_ex(&gpio, MDMSTAT, PullUp);
    // Main UART Interface
    //gpio_init_out_ex(&gpio, MDMDTR, 0);

    thread_sleep_for(WAIT_AFTER_POWR_CHANGED);
}

void RAK_QUECTEL_BG96::onboard_modem_deinit()
{
    gpio_t gpio;

    // Power supply OFF
    gpio_init_out_ex(&gpio, M_POWR, 0);
    thread_sleep_for(WAIT_AFTER_POWR_CHANGED);
}

void RAK_QUECTEL_BG96::onboard_modem_power_up()
{
    tr_debug("onboard_modem_power_up \n");

	gpio_t gpio;

    // Power supply ON
	gpio_init_out_ex(&gpio, M_POWR, 1);
	thread_sleep_for(WAIT_AFTER_POWR_CHANGED);

    // RESET ??? llapinski changed based on itracker firmware
    gpio_init_out_ex(&gpio, RESET_MODULE, 0);

	// Turn on
	thread_sleep_for(100);
	press_power_button(200);
}


void RAK_QUECTEL_BG96::press_power_button(int time_ms)
{
    gpio_t gpio;

    gpio_init_out_ex(&gpio, PWRKEY, 1);
    thread_sleep_for(time_ms);
    gpio_write(&gpio, 0);
}

void RAK_QUECTEL_BG96::onboard_modem_power_down()
{
    gpio_t gpio;

    // Power supply OFF
    gpio_init_out_ex(&gpio, M_POWR, 0);
    thread_sleep_for(WAIT_AFTER_POWR_CHANGED);
}

CellularDevice *CellularDevice::get_target_default_instance()
{
    tr_debug("RAK_BG96:get_inst TX %d RX %d \n", MBED_CONF_QUECTEL_BG96_TX, MBED_CONF_QUECTEL_BG96_RX);
 
    static UARTSerial serial(MBED_CONF_QUECTEL_BG96_TX, MBED_CONF_QUECTEL_BG96_RX, 9600);// MBED_CONF_QUECTEL_BG96_BAUDRATE);
#if defined (MBED_CONF_QUECTEL_BG96_RTS) && defined(MBED_CONF_QUECTEL_BG96_CTS)
    tr_debug("ONBOARD_QUECTEL_BG96flow control: RTS %d CTS %d \n", MBED_CONF_QUECTEL_BG96_RTS, MBED_CONF_QUECTEL_BG96_CTS);
    serial.set_flow_control(mbed::SerialBase::RTSCTS, MBED_CONF_QUECTEL_BG96_RTS, MBED_CONF_QUECTEL_BG96_CTS);
#endif
    static RAK_QUECTEL_BG96 device(&serial);
    // static RAK_QUECTEL_BG96 device(&serial,
    //                            MBED_CONF_QUECTEL_BG96_PWR,
    //                            MBED_CONF_QUECTEL_BG96_POLARITY,
    //                            MBED_CONF_QUECTEL_BG96_RST);
    return &device;
}

#endif // MBED_CONF_NSAPI_PRESENT