Espotel / Mbed 2 deprecated Elmo-Terminal-App

Elmo Terminal provides functionality to test Lora radio and access SX1272 chip registers delivered with Elmo board. This firmware allows the user to control the LoRa radio parameters (eg. frequency, bandwidth, spreading factor etc.) by entering console commands via serial terminal. Application also contains "Ping-Pong" and data transmission functionalities.

Dependencies:   SX1272lib mbed

Fork of Elmo-Terminal by Michal Leksinski

Commands/PingPongCmd.cpp

Committer:
WGorniak
Date:
2015-10-22
Revision:
12:26045241f50f
Parent:
2:8d8295a51f68

File content as of revision 12:26045241f50f:

#include "PingPongCmd.h"
#include "dbg.h"

const string PingPongCmd::PingMsg = "PING";
const string PingPongCmd::PongMsg = "PONG";

#define RX_TIMEOUT_VALUE                                3500000   // in us




PingPongCmd::PingPongCmd(Settings* radioSettings)
    : RadioCmd(radioSettings),
        #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
        led(LED2)
        #else
        led(LED1)
        #endif
{
    isMaster = true;
    queryable_ = true;
    led = 0;
}

PingPongCmd::~PingPongCmd()
{
}

string PingPongCmd::cmd()
{
    return "pp";
}

string PingPongCmd::desc()
{
    return "ping pong test";
}

bool PingPongCmd::execute(list<string> args)
{
    debug( "Starting Ping-Pong loop\r\n" );
    getRadioContex()->radio().Rx( RX_TIMEOUT_VALUE );
    getRadioContex()->setState(LOWPOWER);
    return true;
}

Cmd::Status PingPongCmd::process()
{
    RadioContex* p = getRadioContex();
    Radio& Radio = p->radio();
    uint16_t& BufferSize = p->BufferSize;
    uint8_t* Buffer = p->Buffer;


    switch( p->getState() )
    {
    case RX:
        if( isMaster == true )
        {
            if( BufferSize > 0 )
            {
                if( strncmp( ( const char* )Buffer, PongMsg.c_str(), 4 ) == 0 )
                {
                    led = !led;
                    debug( "...Pong\r\n" );

                    p->Send(PingMsg);
                }
                else if( strncmp( ( const char* )Buffer, PingMsg.c_str(), 4 ) == 0 )
                { // A master already exists then become a slave
                    debug( "...Ping\r\n" );
                    led = !led;
                    isMaster = false;
                    p->Send(PongMsg);
                }
                else // valid reception but neither a PING or a PONG message
                {    // Set device as master ans start again
                    isMaster = true;
                    Radio.Rx( RX_TIMEOUT_VALUE );
                }
            }
        }
        else
        {
            if( BufferSize > 0 )
            {
                if( strncmp( ( const char* )Buffer, PingMsg.c_str(), 4 ) == 0 )
                {
                    led = !led;
                    debug( "...Ping\r\n" );
                    p->Send(PongMsg);
                }
                else // valid reception but not a PING as expected
                {    // Set device as master and start again
                    isMaster = true;
                    Radio.Rx( RX_TIMEOUT_VALUE );
                }
            }
        }
        p->setState(LOWPOWER);
        break;
    case TX:
        led = !led;
        if( isMaster == true )
        {
            debug( "Ping...\r\n" );
        }
        else
        {
            debug( "Pong...\r\n" );
        }
        Radio.Rx( RX_TIMEOUT_VALUE );
        p->setState(LOWPOWER);
        break;
    case RX_TIMEOUT:
        if( isMaster == true )
        {
            p->Send(PingMsg);
        }
        else
        {
            Radio.Rx( RX_TIMEOUT_VALUE );
        }
        p->setState(LOWPOWER);
        break;
    case RX_ERROR:
        // We have received a Packet with a CRC error, send reply as if packet was correct
        if( isMaster == true )
        {
            p->Send(PingMsg);
        }
        else
        {
            p->Send(PongMsg);
        }
        p->setState(LOWPOWER);
        break;
    case TX_TIMEOUT:
        Radio.Rx( RX_TIMEOUT_VALUE );
        p->setState(LOWPOWER);
        break;
    case LOWPOWER:
        break;
    default:
        p->setState(LOWPOWER);
        break;
    }
    return CONTINUE;
}

string PingPongCmd::getResponse(void)
{
    return "frequency cmd rulez!";
}