tnc3-firmware/TNC/PortInterface.hpp

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// Copyright 2016 Rob Riggs <rob@mobilinkd.com>
// All rights reserved.
#ifndef MOBILINKD__TNC__PORT_INTERFACE_HPP_
#define MOBILINKD__TNC__PORT_INTERFACE_HPP_
#include "cmsis_os.h"
#include "HdlcFrame.hpp"
#include "PortInterface.h"
namespace mobilinkd { namespace tnc {
const uint32_t TX_BUFFER_SIZE = 64; // Cannot be larger that USB_FS_MAX_PACKET_SIZE.
extern uint8_t TxBuffer[TX_BUFFER_SIZE];
/**
* This interface defines the semi-asynchronous interface used for reading
* and writing. The write interface is synchronous. The read interface
* is asynchronous. The call to open() starts a task that reads from port
* and puts that data on the read_queue, one byte at a time.
*/
struct PortInterface {
virtual ~PortInterface() {}
virtual bool open() = 0;
virtual bool isOpen() const = 0;
virtual void close() = 0;
virtual osMessageQId queue() const = 0;
virtual bool write(const uint8_t* data, uint32_t size, uint8_t type,
uint32_t timeout) = 0;
virtual bool write(const uint8_t* data, uint32_t size, uint32_t timeout) = 0;
virtual bool write(hdlc::IoFrame* frame, uint32_t timeout = osWaitForever) = 0;
};
extern PortInterface* ioport;
int write(hdlc::IoFrame* frame, uint32_t timeout = osWaitForever);
}} // mobilinkd::tnc
#endif // MOBILINKD__TNC__PORT_INTERFACE_HPP_