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/*******************************************************************************
* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
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* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
* Products, Inc. Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
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#include <cstdio>
#include <cstring>
#include <InterruptIn.h>
#include <DigitalOut.h>
#include "CC3100.hpp"
#include "CC3100_transport.h"
#include "CC3100_pins.h"

static const SlFd_t invalidFd = NULL;

static mbed::InterruptIn irq(HOST_INTR_PIN);
static mbed::DigitalOut nHIB(nHIB_PIN, 0);

static SL_P_EVENT_HANDLER pIrqEventHandler = NULL;
static void* pIrqEventHandlerValue = NULL;

SlFd_t sl_IfOpen(const char *ifName, unsigned long flags)
{    
    SlFd_t fd = invalidFd;
    if (ifName != NULL)
    {
        std::sscanf(ifName, "%p", &fd);
    }
    return fd;
}

int sl_IfClose(SlFd_t fd)
{
    return 0; // Success
}

int sl_IfRead(SlFd_t fd, unsigned char *pBuff, int len)
{
    if (fd == invalidFd)
        return 0; // Failure
    std::memset(pBuff, 0xFF, len);
    static_cast<CC3100::SPI *>(fd)->transfer(pBuff, len, pBuff);
    return len; // Success
}

int sl_IfWrite(SlFd_t fd, const unsigned char *pBuff, int len)
{
    if (fd == invalidFd)
        return 0; // Failure
    static_cast<CC3100::SPI *>(fd)->transfer(pBuff, len, NULL);
    return len; // Success
}

int sl_IfRegIntHdlr(SL_P_EVENT_HANDLER InterruptHdl , void* pValue)
{
    pIrqEventHandler = InterruptHdl;
    pIrqEventHandlerValue = pValue;
    return 0; // Success
}

static void interruptHandler(void)
{
    if (pIrqEventHandler != NULL)
        pIrqEventHandler(pIrqEventHandlerValue);
}

void sl_DeviceEnable(void)
{
    irq.rise(&interruptHandler);
    nHIB = 1;
}

void sl_DeviceDisable(void)
{
    irq.rise(NULL);
    nHIB = 0;
}