Serial.hxx

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#ifndef _FREERTOS_DRIVERS_COMMON_SERIAL_HXX_
#define _FREERTOS_DRIVERS_COMMON_SERIAL_HXX_
 
#include "BlockOrWakeUp.hxx"
#include "SimpleLog.hxx"
#include "Devtab.hxx"
#include "nmranet_config.h"
#include "os/OS.hxx"
#include "DeviceBuffer.hxx"
 
class Serial : public Node
{
protected:
    Serial(const char *name,
           size_t tx_buffer_size = config_serial_tx_buffer_size(),
           size_t rx_buffer_size = config_serial_rx_buffer_size())
        : Node(name)
        , txBuf(tx_buffer_size ? DeviceBuffer<uint8_t>::create(tx_buffer_size,
                                                               tx_buffer_size/2)
                               : NULL)
        , rxBuf(rx_buffer_size ? DeviceBuffer<uint8_t>::create(rx_buffer_size)
                               : NULL)
        , overrunCount(0)
    {
    }    
 
    ~Serial()
    {
        if (txBuf)
        {
            txBuf->destroy();
        }
        if (rxBuf)
        {
            rxBuf->destroy();
        }
    }
 
    virtual void tx_char() = 0;
 
    DeviceBuffer<uint8_t> *txBuf; 
    DeviceBuffer<uint8_t> *rxBuf; 
    unsigned int overrunCount; 
    ssize_t read(File *file, void *buf, size_t count) OVERRIDE;
 
    ssize_t write(File *file, const void *buf, size_t count) OVERRIDE;
 
    int ioctl(File *file, unsigned long int key, unsigned long data) OVERRIDE;
    
    bool select(File* file, int mode) OVERRIDE;
 
    void flush_buffers() OVERRIDE;
 
private:
    DISALLOW_COPY_AND_ASSIGN(Serial);
};
 
#endif /* _FREERTOS_DRIVERS_COMMON_SERIAL_HXX_ */