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/*
* Video On Demand Samples
*
* Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You may also obtain this software under a propriety license from Microchip.
* Please contact Microchip for further information.
*
*/
/*----------------------------------------------------------*/
/*! \file
* \brief This component implements the MOST low level driver.
*/
/*----------------------------------------------------------*/
#ifndef INDUSTRIAL_STACK_LLD_H
#define INDUSTRIAL_STACK_LLD_H
#include <stdint.h>
#include <stdbool.h>
#include <semaphore.h>
#include "IndustrialStack_Types.h"
#define BOARD_PMS_RX_QUEUE 256
#define BOARD_PMS_RX_SIZE 64
#define BOARD_PMS_TX_SIZE 64
typedef struct
{
int16_t payloadLen;
uint8_t buffer[BOARD_PMS_RX_SIZE];
} QueueEntry_t;
#define QUEUE_TESTPATTERN (0x34547382)
typedef struct
{
uint32_t testPattern;
QueueEntry_t dataQueue[BOARD_PMS_RX_QUEUE];
QueueEntry_t *pRx;
QueueEntry_t *pTx;
volatile uint32_t rxPos;
volatile uint32_t txPos;
} Queue_t;
class CIndustrialStackLld
{
private:
pthread_t txThread;
pthread_t rxThread;
public:
///Do not use directly! (Called internally from thread context)
Queue_t txQueue;
///Do not use directly! (Called internally from thread context)
Queue_t rxQueue;
///Do not use directly! (Called internally from thread context)
int hControlRx;
///Do not use directly! (Called internally from thread context)
int hControlTx;
///Do not use directly! (Called internally from thread context)
bool allowThreadRun;
///Do not use directly! (Called internally from thread context)
sem_t txSem;
CIndustrialStackLldCB *listener;
/*----------------------------------------------------------*/
/*! \brief initializes LLD
*
* \param controlRxHandle File handle for the RX character device
* \param controlRxHandle File handle for the TX character device
* \return nothing.
*/
/*----------------------------------------------------------*/
CIndustrialStackLld( int controlRxHandle, int controlTxHandle );
/*----------------------------------------------------------*/
/*! \brief deinitializes LLD
*/
/*----------------------------------------------------------*/
~CIndustrialStackLld();
/*----------------------------------------------------------*/
/*! \brief determins if INIC has something to read
*
* \return The amount of data, which will be delivered by the next call of Read
*/
/*----------------------------------------------------------*/
uint16_t DataAvailable();
/*----------------------------------------------------------*/
/*! \brief receive a control message via USB.
*
* \param pData - message data
*
* \return The amount of bytes read.
*/
/*----------------------------------------------------------*/
uint16_t Read( uint8_t *pData, uint32_t bufferLen );
/*----------------------------------------------------------*/
/*! \brief Clearing RX and TX queues.
*
* \return nothing
*/
/*----------------------------------------------------------*/
void ClearQueues();
/*----------------------------------------------------------*/
/*! \brief send a control message via USB.
*
* \param wLen - length of message in bytes
* \param pData - message data
*
* \return True if no error.
*/
/*----------------------------------------------------------*/
bool Write( uint16_t wLen, uint8_t *pData );
};
class CIndustrialStackLldCB
{
public:
virtual void OnReadThreadEnd(CIndustrialStackLld *lld) = 0;
};
#endif // INDUSTRIAL_STACK_LLD_H
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