DIYmall 0.96" Inch I2c IIC Serial 128x64 Oled LCD LED White Display Module
Dependencies: Adafruit_GFX SDFileSystem
Fork of ATT_AWS_IoT_demo by
WNCInterface/WNCSocket/WNCUDPSocket.cpp
- Committer:
- afmiee
- Date:
- 2018-10-09
- Revision:
- 28:4650c541b029
- Parent:
- 15:6f2798e45099
File content as of revision 28:4650c541b029:
/* ===================================================================== Copyright © 2016, Avnet (R) Contributors: * James M Flynn, www.em.avnet.com Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. @file WNCInterface.cpp @version 1.0 @date Sept 2016 ======================================================================== */ #include "../WNCInterface.h" #include "WNCUDPSocket.h" #include <cstring> WNCUDPSocket::WNCUDPSocket() : _is_blocking(0), _btimeout(0){ } WNCUDPSocket::~WNCUDPSocket() { } int WNCUDPSocket::init(void) { _is_blocking = false; // start out not blocking, user will set it if desired return ( WNCInterface::_pwnc->getWncStatus() == WNC_GOOD )? 0:-1; } int WNCUDPSocket::close(void) { WNCSocket::disconnect(); return ( WNCInterface::_pwnc->getWncStatus() == WNC_GOOD )? 0:-1; } // -1 if unsuccessful, else number of bytes written int WNCUDPSocket::sendTo(WNCEndpoint &remote, char *packet, int length) { int ret = -1; CHK_WNCFE(( WNCInterface::_pwnc->getWncStatus() == FATAL_FLAG ), fail); if( remote._epAddr.port ) { //make sure the WNCEndpoint has an port assoicated with it if( WNCSocket::connect(remote._epAddr.IP,SOCK_DGRAM,remote._epAddr.port) ) { if( WNCInterface::_pwnc->write(0,packet,length) ) ret = length; close(); } } return ret; } // // blocking is used to make the WNC keep checking for incoming data for a // period of time. void WNCUDPSocket::set_blocking (bool blocking, unsigned int timeout) { _is_blocking = blocking; // true or false _btimeout = timeout; // user specifies in msec CHK_WNCFE(( WNCInterface::_pwnc->getWncStatus() == FATAL_FLAG ), void); WNCInterface::_pwnc->setReadRetryWait(0, 0); WNCInterface::_pwnc->setReadRetries(0, 0); } // -1 if unsuccessful, else number of bytes received int WNCUDPSocket::receiveFrom(WNCEndpoint &remote, char *buffer, int length) { const uint8_t *ptr; Timer t; int done, ret = -1; //make sure the WNCEndpoint has an port assoicated with it if( !remote._epAddr.port ) return -1; CHK_WNCFE(( WNCInterface::_pwnc->getWncStatus() == FATAL_FLAG ), fail); ret = WNCSocket::connect(remote._epAddr.IP,SOCK_DGRAM,remote._epAddr.port); t.start(); do { ret = WNCInterface::_pwnc->read(0, &ptr); done = ret | (t.read_ms() > _btimeout); } while( _is_blocking && !done ); t.stop(); if( ret > length ) ret = length; memcpy( buffer, ptr, ret ); return ret; }