File content as of revision 0:dfed780dc91a:

#include "AsyncSerial/AsyncSerial.h"

#include "mbed.h"

template<class T>
AsyncSerial::AsyncSerial(PinName tx, PinName rx, PinName rts, PinName cts)
    :   SerialBase(tx, rx),
        sendBuffer(NULL),
        sendLength(0),
        sendDoneHandler(NULL),
        sendIndex(0),
        receiveBuffer(NULL),
        receiveMaxLength(0),
        receiveDoneHandler(NULL),
        receiveIndex(0),
        conditionBuffer(NULL),
        conditionLength(0),
        conditionIndex(0),
        timeout()
{    
    SerialBase::attach<AsyncSerial>(this, &AsyncSerial::getReady, SerialBase::RxIrq);
    SerialBase::attach<AsyncSerial>(this, &AsyncSerial::putDone, SerialBase::TxIrq);
}

void AsyncSerial::putDone()
{
    if (sendLength > 0)
    {
        sendIndex++;
    
        if (sendIndex < sendLength)
        {
            SerialBase::_base_putc(sendBuffer[sendIndex]);
        }
        else
        {
            if (sendDoneHandler)
            {
                sendDoneHandler(sendBuffer, sendLength);
                sendDoneHandler = NULL;
                sendLength = 0;
            }
        }
    }
}

void AsyncSerial::getReady()
{
    uint8_t input = SerialBase::_base_getc();
    
    if (receiveMaxLength > 0)
    {        
        receiveBuffer[receiveIndex] = input;
        receiveIndex++;
        
        if (receiveIndex == receiveMaxLength)
        {
            timeout.detach();
            getDone();
        }
        else if (conditionLength > 0)
        {
            if (receiveBuffer[receiveIndex - 1] == conditionBuffer[conditionIndex])
            {
                conditionIndex++;
            
                if (conditionIndex == conditionLength)
                {
                    timeout.detach();
                    getDone();
                }
            }
            else
            {
                conditionIndex = 0;
            }
        }
    }
}

void AsyncSerial::getDone()
{            
    receiveMaxLength = 0;

    if (receiveDoneHandler)
    {
        receiveDoneHandler(receiveBuffer, receiveIndex);
        receiveDoneHandler = NULL;
    }
}

void AsyncSerial::send(send_done_t handler, uint8_t* buffer, uint16_t length)
{
    if (handler && buffer && length)
    {        
        sendDoneHandler = handler;
        
        send(buffer, length);
    }
}

template<typename T>
void AsyncSerial::send(T *object, void (T::*member)(void), uint8_t* buffer, uint16_t length) 
{
    if (object && member && buffer && length)
    {
        sendObject = static_cast<void*>(object);
        memcpy(sendMember, (char*)&member, sizeof(member));
        sendMemberCaller = &AsyncSerial::sendMemberCallerTemplate<T>;

        sendDoneHandler = 0;
        
        send(buffer, length);
    }
}

template<typename T>
static void AsyncSerial::sendMemberCallerTemplate(void *object, char *member, uint8_t) 
{
    T* o = static_cast<T*>(object);
    void (T::*m)(void);
    memcpy((char*)&m, member, sizeof(m));
    (o->*m)();
}

void AsyncSerial::send(uint8_t* buffer, uint16_t length)
{
    sendBuffer = buffer;
    sendLength = length;

    sendIndex = 0;    
    SerialBase::_base_putc(sendBuffer[sendIndex]);
}



void AsyncSerial::receive(receive_done_t handler, 
                          uint8_t* buffer, uint16_t maxLength, 
                          const uint8_t* _conditionBuffer, uint16_t _conditionLength, 
                          uint32_t timeoutMilli)
{
    receiveDoneHandler = handler;

    receiveBuffer = buffer;
    receiveMaxLength = maxLength;
    receiveIndex = 0;
    
    conditionBuffer = _conditionBuffer;
    conditionLength = _conditionLength;
    conditionIndex = 0;
    
    timeout.attach_us<AsyncSerial>(this, &AsyncSerial::getDone, timeoutMilli * 1000);
}

int AsyncSerial::getc() 
{
    return SerialBase::_base_getc();
}

int AsyncSerial::putc(int c) 
{
    return SerialBase::_base_putc(c);
}