yocto_spiport.cpp

Go to the documentation of this file.

/*********************************************************************
 *
 * $Id: yocto_spiport.cpp 28748 2017-10-03 08:23:39Z seb $
 *
 * Implements yFindSpiPort(), the high-level API for SpiPort functions
 *
 * - - - - - - - - - License information: - - - - - - - - -
 *
 *  Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
 *
 *  Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
 *  non-exclusive license to use, modify, copy and integrate this
 *  file into your software for the sole purpose of interfacing
 *  with Yoctopuce products.
 *
 *  You may reproduce and distribute copies of this file in
 *  source or object form, as long as the sole purpose of this
 *  code is to interface with Yoctopuce products. You must retain
 *  this notice in the distributed source file.
 *
 *  You should refer to Yoctopuce General Terms and Conditions
 *  for additional information regarding your rights and
 *  obligations.
 *
 *  THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
 *  WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
 *  WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
 *  FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
 *  EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
 *  INDIRECT OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA,
 *  COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR
 *  SERVICES, ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT
 *  LIMITED TO ANY DEFENSE THEREOF), ANY CLAIMS FOR INDEMNITY OR
 *  CONTRIBUTION, OR OTHER SIMILAR COSTS, WHETHER ASSERTED ON THE
 *  BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE), BREACH OF
 *  WARRANTY, OR OTHERWISE.
 *
 *********************************************************************/


#define _CRT_SECURE_NO_DEPRECATE //do not use windows secure crt
#include "yocto_spiport.h"
#include "yapi/yjson.h"
#include "yapi/yapi.h"
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#define  __FILE_ID__  "spiport"

YSpiPort::YSpiPort(const string& func): YFunction(func)
//--- (YSpiPort initialization)
    ,_rxCount(RXCOUNT_INVALID)
    ,_txCount(TXCOUNT_INVALID)
    ,_errCount(ERRCOUNT_INVALID)
    ,_rxMsgCount(RXMSGCOUNT_INVALID)
    ,_txMsgCount(TXMSGCOUNT_INVALID)
    ,_lastMsg(LASTMSG_INVALID)
    ,_currentJob(CURRENTJOB_INVALID)
    ,_startupJob(STARTUPJOB_INVALID)
    ,_command(COMMAND_INVALID)
    ,_voltageLevel(VOLTAGELEVEL_INVALID)
    ,_protocol(PROTOCOL_INVALID)
    ,_spiMode(SPIMODE_INVALID)
    ,_ssPolarity(SSPOLARITY_INVALID)
    ,_shitftSampling(SHITFTSAMPLING_INVALID)
    ,_valueCallbackSpiPort(NULL)
    ,_rxptr(0)
    ,_rxbuffptr(0)
//--- (end of YSpiPort initialization)
{
    _className="SpiPort";
}

YSpiPort::~YSpiPort()
{
//--- (YSpiPort cleanup)
//--- (end of YSpiPort cleanup)
}
//--- (YSpiPort implementation)
// static attributes
const string YSpiPort::LASTMSG_INVALID = YAPI_INVALID_STRING;
const string YSpiPort::CURRENTJOB_INVALID = YAPI_INVALID_STRING;
const string YSpiPort::STARTUPJOB_INVALID = YAPI_INVALID_STRING;
const string YSpiPort::COMMAND_INVALID = YAPI_INVALID_STRING;
const string YSpiPort::PROTOCOL_INVALID = YAPI_INVALID_STRING;
const string YSpiPort::SPIMODE_INVALID = YAPI_INVALID_STRING;

int YSpiPort::_parseAttr(YJSONObject* json_val)
{
    if(json_val->has("rxCount")) {
        _rxCount =  json_val->getInt("rxCount");
    }
    if(json_val->has("txCount")) {
        _txCount =  json_val->getInt("txCount");
    }
    if(json_val->has("errCount")) {
        _errCount =  json_val->getInt("errCount");
    }
    if(json_val->has("rxMsgCount")) {
        _rxMsgCount =  json_val->getInt("rxMsgCount");
    }
    if(json_val->has("txMsgCount")) {
        _txMsgCount =  json_val->getInt("txMsgCount");
    }
    if(json_val->has("lastMsg")) {
        _lastMsg =  json_val->getString("lastMsg");
    }
    if(json_val->has("currentJob")) {
        _currentJob =  json_val->getString("currentJob");
    }
    if(json_val->has("startupJob")) {
        _startupJob =  json_val->getString("startupJob");
    }
    if(json_val->has("command")) {
        _command =  json_val->getString("command");
    }
    if(json_val->has("voltageLevel")) {
        _voltageLevel =  (Y_VOLTAGELEVEL_enum)json_val->getInt("voltageLevel");
    }
    if(json_val->has("protocol")) {
        _protocol =  json_val->getString("protocol");
    }
    if(json_val->has("spiMode")) {
        _spiMode =  json_val->getString("spiMode");
    }
    if(json_val->has("ssPolarity")) {
        _ssPolarity =  (Y_SSPOLARITY_enum)json_val->getInt("ssPolarity");
    }
    if(json_val->has("shitftSampling")) {
        _shitftSampling =  (Y_SHITFTSAMPLING_enum)json_val->getInt("shitftSampling");
    }
    return YFunction::_parseAttr(json_val);
}


int YSpiPort::get_rxCount(void)
{
    int res = 0;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::RXCOUNT_INVALID;
                }
            }
        }
        res = _rxCount;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::get_txCount(void)
{
    int res = 0;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::TXCOUNT_INVALID;
                }
            }
        }
        res = _txCount;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::get_errCount(void)
{
    int res = 0;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::ERRCOUNT_INVALID;
                }
            }
        }
        res = _errCount;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::get_rxMsgCount(void)
{
    int res = 0;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::RXMSGCOUNT_INVALID;
                }
            }
        }
        res = _rxMsgCount;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::get_txMsgCount(void)
{
    int res = 0;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::TXMSGCOUNT_INVALID;
                }
            }
        }
        res = _txMsgCount;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

string YSpiPort::get_lastMsg(void)
{
    string res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::LASTMSG_INVALID;
                }
            }
        }
        res = _lastMsg;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

string YSpiPort::get_currentJob(void)
{
    string res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::CURRENTJOB_INVALID;
                }
            }
        }
        res = _currentJob;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_currentJob(const string& newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = newval;
        res = _setAttr("currentJob", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

string YSpiPort::get_startupJob(void)
{
    string res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::STARTUPJOB_INVALID;
                }
            }
        }
        res = _startupJob;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_startupJob(const string& newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = newval;
        res = _setAttr("startupJob", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

string YSpiPort::get_command(void)
{
    string res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::COMMAND_INVALID;
                }
            }
        }
        res = _command;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_command(const string& newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = newval;
        res = _setAttr("command", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

Y_VOLTAGELEVEL_enum YSpiPort::get_voltageLevel(void)
{
    Y_VOLTAGELEVEL_enum res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::VOLTAGELEVEL_INVALID;
                }
            }
        }
        res = _voltageLevel;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_voltageLevel(Y_VOLTAGELEVEL_enum newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        char buf[32]; sprintf(buf, "%d", newval); rest_val = string(buf);
        res = _setAttr("voltageLevel", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

string YSpiPort::get_protocol(void)
{
    string res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::PROTOCOL_INVALID;
                }
            }
        }
        res = _protocol;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_protocol(const string& newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = newval;
        res = _setAttr("protocol", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

string YSpiPort::get_spiMode(void)
{
    string res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::SPIMODE_INVALID;
                }
            }
        }
        res = _spiMode;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_spiMode(const string& newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = newval;
        res = _setAttr("spiMode", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

Y_SSPOLARITY_enum YSpiPort::get_ssPolarity(void)
{
    Y_SSPOLARITY_enum res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::SSPOLARITY_INVALID;
                }
            }
        }
        res = _ssPolarity;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_ssPolarity(Y_SSPOLARITY_enum newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = (newval>0 ? "1" : "0");
        res = _setAttr("ssPolarity", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

Y_SHITFTSAMPLING_enum YSpiPort::get_shitftSampling(void)
{
    Y_SHITFTSAMPLING_enum res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::DefaultCacheValidity) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YSpiPort::SHITFTSAMPLING_INVALID;
                }
            }
        }
        res = _shitftSampling;
    } catch (std::exception) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

int YSpiPort::set_shitftSampling(Y_SHITFTSAMPLING_enum newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = (newval>0 ? "1" : "0");
        res = _setAttr("shitftSampling", rest_val);
    } catch (std::exception) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

YSpiPort* YSpiPort::FindSpiPort(string func)
{
    YSpiPort* obj = NULL;
    int taken = 0;
    if (YAPI::_apiInitialized) {
        yEnterCriticalSection(&YAPI::_global_cs);
        taken = 1;
    }try {
        obj = (YSpiPort*) YFunction::_FindFromCache("SpiPort", func);
        if (obj == NULL) {
            obj = new YSpiPort(func);
            YFunction::_AddToCache("SpiPort", func, obj);
        }
    } catch (std::exception) {
        if (taken) yLeaveCriticalSection(&YAPI::_global_cs);
        throw;
    }
    if (taken) yLeaveCriticalSection(&YAPI::_global_cs);
    return obj;
}

int YSpiPort::registerValueCallback(YSpiPortValueCallback callback)
{
    string val;
    if (callback != NULL) {
        YFunction::_UpdateValueCallbackList(this, true);
    } else {
        YFunction::_UpdateValueCallbackList(this, false);
    }
    _valueCallbackSpiPort = callback;
    // Immediately invoke value callback with current value
    if (callback != NULL && this->isOnline()) {
        val = _advertisedValue;
        if (!(val == "")) {
            this->_invokeValueCallback(val);
        }
    }
    return 0;
}

int YSpiPort::_invokeValueCallback(string value)
{
    if (_valueCallbackSpiPort != NULL) {
        _valueCallbackSpiPort(this, value);
    } else {
        YFunction::_invokeValueCallback(value);
    }
    return 0;
}

int YSpiPort::sendCommand(string text)
{
    return this->set_command(text);
}

int YSpiPort::reset(void)
{
    _rxptr = 0;
    _rxbuffptr = 0;
    _rxbuff = string(0, (char)0);

    return this->sendCommand("Z");
}

int YSpiPort::writeByte(int code)
{
    return this->sendCommand(YapiWrapper::ysprintf("$%02x",code));
}

int YSpiPort::writeStr(string text)
{
    string buff;
    int bufflen = 0;
    int idx = 0;
    int ch = 0;
    buff = text;
    bufflen = (int)(buff).size();
    if (bufflen < 100) {
        // if string is pure text, we can send it as a simple command (faster)
        ch = 0x20;
        idx = 0;
        while ((idx < bufflen) && (ch != 0)) {
            ch = ((u8)buff[idx]);
            if ((ch >= 0x20) && (ch < 0x7f)) {
                idx = idx + 1;
            } else {
                ch = 0;
            }
        }
        if (idx >= bufflen) {
            return this->sendCommand(YapiWrapper::ysprintf("+%s",text.c_str()));
        }
    }
    // send string using file upload
    return this->_upload("txdata", buff);
}

int YSpiPort::writeBin(string buff)
{
    return this->_upload("txdata", buff);
}

int YSpiPort::writeArray(vector<int> byteList)
{
    string buff;
    int bufflen = 0;
    int idx = 0;
    int hexb = 0;
    int res = 0;
    bufflen = (int)byteList.size();
    buff = string(bufflen, (char)0);
    idx = 0;
    while (idx < bufflen) {
        hexb = byteList[idx];
        buff[idx] = (char)(hexb);
        idx = idx + 1;
    }

    res = this->_upload("txdata", buff);
    return res;
}

int YSpiPort::writeHex(string hexString)
{
    string buff;
    int bufflen = 0;
    int idx = 0;
    int hexb = 0;
    int res = 0;
    bufflen = (int)(hexString).length();
    if (bufflen < 100) {
        return this->sendCommand(YapiWrapper::ysprintf("$%s",hexString.c_str()));
    }
    bufflen = ((bufflen) >> (1));
    buff = string(bufflen, (char)0);
    idx = 0;
    while (idx < bufflen) {
        hexb = (int)strtoul((hexString).substr( 2 * idx, 2).c_str(), NULL, 16);
        buff[idx] = (char)(hexb);
        idx = idx + 1;
    }

    res = this->_upload("txdata", buff);
    return res;
}

int YSpiPort::writeLine(string text)
{
    string buff;
    int bufflen = 0;
    int idx = 0;
    int ch = 0;
    buff = YapiWrapper::ysprintf("%s\r\n",text.c_str());
    bufflen = (int)(buff).size()-2;
    if (bufflen < 100) {
        // if string is pure text, we can send it as a simple command (faster)
        ch = 0x20;
        idx = 0;
        while ((idx < bufflen) && (ch != 0)) {
            ch = ((u8)buff[idx]);
            if ((ch >= 0x20) && (ch < 0x7f)) {
                idx = idx + 1;
            } else {
                ch = 0;
            }
        }
        if (idx >= bufflen) {
            return this->sendCommand(YapiWrapper::ysprintf("!%s",text.c_str()));
        }
    }
    // send string using file upload
    return this->_upload("txdata", buff);
}

int YSpiPort::readByte(void)
{
    int currpos = 0;
    int reqlen = 0;
    string buff;
    int bufflen = 0;
    int mult = 0;
    int endpos = 0;
    int res = 0;
    // first check if we have the requested character in the look-ahead buffer
    bufflen = (int)(_rxbuff).size();
    if ((_rxptr >= _rxbuffptr) && (_rxptr < _rxbuffptr+bufflen)) {
        res = ((u8)_rxbuff[_rxptr-_rxbuffptr]);
        _rxptr = _rxptr + 1;
        return res;
    }
    // try to preload more than one byte to speed-up byte-per-byte access
    currpos = _rxptr;
    reqlen = 1024;
    buff = this->readBin(reqlen);
    bufflen = (int)(buff).size();
    if (_rxptr == currpos+bufflen) {
        res = ((u8)buff[0]);
        _rxptr = currpos+1;
        _rxbuffptr = currpos;
        _rxbuff = buff;
        return res;
    }
    // mixed bidirectional data, retry with a smaller block
    _rxptr = currpos;
    reqlen = 16;
    buff = this->readBin(reqlen);
    bufflen = (int)(buff).size();
    if (_rxptr == currpos+bufflen) {
        res = ((u8)buff[0]);
        _rxptr = currpos+1;
        _rxbuffptr = currpos;
        _rxbuff = buff;
        return res;
    }
    // still mixed, need to process character by character
    _rxptr = currpos;

    buff = this->_download(YapiWrapper::ysprintf("rxdata.bin?pos=%d&len=1",_rxptr));
    bufflen = (int)(buff).size() - 1;
    endpos = 0;
    mult = 1;
    while ((bufflen > 0) && (((u8)buff[bufflen]) != 64)) {
        endpos = endpos + mult * (((u8)buff[bufflen]) - 48);
        mult = mult * 10;
        bufflen = bufflen - 1;
    }
    _rxptr = endpos;
    if (bufflen == 0) {
        return YAPI_NO_MORE_DATA;
    }
    res = ((u8)buff[0]);
    return res;
}

string YSpiPort::readStr(int nChars)
{
    string buff;
    int bufflen = 0;
    int mult = 0;
    int endpos = 0;
    string res;
    if (nChars > 65535) {
        nChars = 65535;
    }

    buff = this->_download(YapiWrapper::ysprintf("rxdata.bin?pos=%d&len=%d", _rxptr,nChars));
    bufflen = (int)(buff).size() - 1;
    endpos = 0;
    mult = 1;
    while ((bufflen > 0) && (((u8)buff[bufflen]) != 64)) {
        endpos = endpos + mult * (((u8)buff[bufflen]) - 48);
        mult = mult * 10;
        bufflen = bufflen - 1;
    }
    _rxptr = endpos;
    res = (buff).substr( 0, bufflen);
    return res;
}

string YSpiPort::readBin(int nChars)
{
    string buff;
    int bufflen = 0;
    int mult = 0;
    int endpos = 0;
    int idx = 0;
    string res;
    if (nChars > 65535) {
        nChars = 65535;
    }

    buff = this->_download(YapiWrapper::ysprintf("rxdata.bin?pos=%d&len=%d", _rxptr,nChars));
    bufflen = (int)(buff).size() - 1;
    endpos = 0;
    mult = 1;
    while ((bufflen > 0) && (((u8)buff[bufflen]) != 64)) {
        endpos = endpos + mult * (((u8)buff[bufflen]) - 48);
        mult = mult * 10;
        bufflen = bufflen - 1;
    }
    _rxptr = endpos;
    res = string(bufflen, (char)0);
    idx = 0;
    while (idx < bufflen) {
        res[idx] = (char)(((u8)buff[idx]));
        idx = idx + 1;
    }
    return res;
}

vector<int> YSpiPort::readArray(int nChars)
{
    string buff;
    int bufflen = 0;
    int mult = 0;
    int endpos = 0;
    int idx = 0;
    int b = 0;
    vector<int> res;
    if (nChars > 65535) {
        nChars = 65535;
    }

    buff = this->_download(YapiWrapper::ysprintf("rxdata.bin?pos=%d&len=%d", _rxptr,nChars));
    bufflen = (int)(buff).size() - 1;
    endpos = 0;
    mult = 1;
    while ((bufflen > 0) && (((u8)buff[bufflen]) != 64)) {
        endpos = endpos + mult * (((u8)buff[bufflen]) - 48);
        mult = mult * 10;
        bufflen = bufflen - 1;
    }
    _rxptr = endpos;
    res.clear();
    idx = 0;
    while (idx < bufflen) {
        b = ((u8)buff[idx]);
        res.push_back(b);
        idx = idx + 1;
    }
    return res;
}

string YSpiPort::readHex(int nBytes)
{
    string buff;
    int bufflen = 0;
    int mult = 0;
    int endpos = 0;
    int ofs = 0;
    string res;
    if (nBytes > 65535) {
        nBytes = 65535;
    }

    buff = this->_download(YapiWrapper::ysprintf("rxdata.bin?pos=%d&len=%d", _rxptr,nBytes));
    bufflen = (int)(buff).size() - 1;
    endpos = 0;
    mult = 1;
    while ((bufflen > 0) && (((u8)buff[bufflen]) != 64)) {
        endpos = endpos + mult * (((u8)buff[bufflen]) - 48);
        mult = mult * 10;
        bufflen = bufflen - 1;
    }
    _rxptr = endpos;
    res = "";
    ofs = 0;
    while (ofs + 3 < bufflen) {
        res = YapiWrapper::ysprintf("%s%02x%02x%02x%02x", res.c_str(), ((u8)buff[ofs]), ((u8)buff[ofs + 1]), ((u8)buff[ofs + 2]),((u8)buff[ofs + 3]));
        ofs = ofs + 4;
    }
    while (ofs < bufflen) {
        res = YapiWrapper::ysprintf("%s%02x", res.c_str(),((u8)buff[ofs]));
        ofs = ofs + 1;
    }
    return res;
}

string YSpiPort::readLine(void)
{
    string url;
    string msgbin;
    vector<string> msgarr;
    int msglen = 0;
    string res;

    url = YapiWrapper::ysprintf("rxmsg.json?pos=%d&len=1&maxw=1",_rxptr);
    msgbin = this->_download(url);
    msgarr = this->_json_get_array(msgbin);
    msglen = (int)msgarr.size();
    if (msglen == 0) {
        return "";
    }
    // last element of array is the new position
    msglen = msglen - 1;
    _rxptr = atoi((msgarr[msglen]).c_str());
    if (msglen == 0) {
        return "";
    }
    res = this->_json_get_string(msgarr[0]);
    return res;
}

vector<string> YSpiPort::readMessages(string pattern,int maxWait)
{
    string url;
    string msgbin;
    vector<string> msgarr;
    int msglen = 0;
    vector<string> res;
    int idx = 0;

    url = YapiWrapper::ysprintf("rxmsg.json?pos=%d&maxw=%d&pat=%s", _rxptr, maxWait,pattern.c_str());
    msgbin = this->_download(url);
    msgarr = this->_json_get_array(msgbin);
    msglen = (int)msgarr.size();
    if (msglen == 0) {
        return res;
    }
    // last element of array is the new position
    msglen = msglen - 1;
    _rxptr = atoi((msgarr[msglen]).c_str());
    idx = 0;
    while (idx < msglen) {
        res.push_back(this->_json_get_string(msgarr[idx]));
        idx = idx + 1;
    }
    return res;
}

int YSpiPort::read_seek(int absPos)
{
    _rxptr = absPos;
    return YAPI_SUCCESS;
}

int YSpiPort::read_tell(void)
{
    return _rxptr;
}

int YSpiPort::read_avail(void)
{
    string buff;
    int bufflen = 0;
    int res = 0;

    buff = this->_download(YapiWrapper::ysprintf("rxcnt.bin?pos=%d",_rxptr));
    bufflen = (int)(buff).size() - 1;
    while ((bufflen > 0) && (((u8)buff[bufflen]) != 64)) {
        bufflen = bufflen - 1;
    }
    res = atoi(((buff).substr( 0, bufflen)).c_str());
    return res;
}

string YSpiPort::queryLine(string query,int maxWait)
{
    string url;
    string msgbin;
    vector<string> msgarr;
    int msglen = 0;
    string res;

    url = YapiWrapper::ysprintf("rxmsg.json?len=1&maxw=%d&cmd=!%s", maxWait,query.c_str());
    msgbin = this->_download(url);
    msgarr = this->_json_get_array(msgbin);
    msglen = (int)msgarr.size();
    if (msglen == 0) {
        return "";
    }
    // last element of array is the new position
    msglen = msglen - 1;
    _rxptr = atoi((msgarr[msglen]).c_str());
    if (msglen == 0) {
        return "";
    }
    res = this->_json_get_string(msgarr[0]);
    return res;
}

int YSpiPort::uploadJob(string jobfile,string jsonDef)
{
    this->_upload(jobfile, jsonDef);
    return YAPI_SUCCESS;
}

int YSpiPort::selectJob(string jobfile)
{
    return this->set_currentJob(jobfile);
}

int YSpiPort::set_SS(int val)
{
    return this->sendCommand(YapiWrapper::ysprintf("S%d",val));
}

YSpiPort *YSpiPort::nextSpiPort(void)
{
    string  hwid;

    if(YISERR(_nextFunction(hwid)) || hwid=="") {
        return NULL;
    }
    return YSpiPort::FindSpiPort(hwid);
}

YSpiPort* YSpiPort::FirstSpiPort(void)
{
    vector<YFUN_DESCR>   v_fundescr;
    YDEV_DESCR             ydevice;
    string              serial, funcId, funcName, funcVal, errmsg;

    if(YISERR(YapiWrapper::getFunctionsByClass("SpiPort", 0, v_fundescr, sizeof(YFUN_DESCR), errmsg)) ||
       v_fundescr.size() == 0 ||
       YISERR(YapiWrapper::getFunctionInfo(v_fundescr[0], ydevice, serial, funcId, funcName, funcVal, errmsg))) {
        return NULL;
    }
    return YSpiPort::FindSpiPort(serial+"."+funcId);
}

//--- (end of YSpiPort implementation)

//--- (YSpiPort functions)
//--- (end of YSpiPort functions)