APIFrame.cpp

00001 #include "APIFrame.h"
00002 
00003 APIFrame::APIFrame(unsigned int payloadLength)
00004     :BufferedArray(payloadLength, 10)
00005 {}
00006 
00007 APIFrame::APIFrame(APIFrame * frame)
00008     :BufferedArray(frame)
00009 {
00010     if (frame != NULL) {
00011         this->checkSum = frame->checkSum;
00012         this->isVerify = frame->isVerify;
00013     }
00014 }
00015 
00016 unsigned char APIFrame::getFrameType()
00017 {
00018     return data[0];
00019 }
00020 
00021 void APIFrame::setFrameType(unsigned char identifier)
00022 {
00023     data[0] = identifier;
00024 }
00025 
00026 void APIFrame::allocate(unsigned long length)
00027 {
00028     BufferedArray::allocate(length);
00029     isVerify = false;
00030 }
00031 
00032 void APIFrame::rewind()
00033 {
00034     BufferedArray::rewind();
00035     isVerify = false;
00036 }
00037 
00038 bool APIFrame::convert(APIFrame * frame)
00039 {
00040     if (frame == NULL)
00041         return false;
00042 
00043     this->data = frame->data;
00044     this->index = frame->index;
00045     this->max = frame->max;
00046     this->checkSum = frame->checkSum;
00047     this->isVerify = frame->isVerify;
00048     return true;
00049 }
00050 
00051 void APIFrame::set(unsigned char value)
00052 {
00053     BufferedArray::set(value);
00054     isVerify = false;
00055 }
00056 
00057 void APIFrame::sets(const unsigned char * value, unsigned long offset, unsigned long length)
00058 {
00059     BufferedArray::sets(value, offset, length);
00060     isVerify = false;
00061 }
00062 
00063 void APIFrame::set(unsigned long position, unsigned char value)
00064 {
00065     BufferedArray::set(position, value);
00066     isVerify = false;
00067 }
00068 
00069 void APIFrame::sets(unsigned long position, const unsigned char * value, unsigned long offset, unsigned long length)
00070 {
00071     BufferedArray::sets(position, value, offset, length);
00072     isVerify = false;
00073 }
00074 
00075 char APIFrame::getCheckSum()
00076 {
00077     return checkSum;
00078 }
00079 
00080 void APIFrame::setCheckSum(unsigned char value)
00081 {
00082     checkSum = value;
00083 }
00084 
00085 bool APIFrame::verifyChecksum()
00086 {
00087     if (isVerify)
00088         return true;
00089 
00090     char temp = 0x00;
00091     for (int i = 0; i < index; i++)
00092         temp += data[i];
00093     if (temp + checkSum == 0xFF)
00094         isVerify = true;
00095     else
00096         isVerify = false;
00097 
00098     return isVerify;
00099 }
00100 
00101 void APIFrame::calculateChecksum()
00102 {
00103     if (isVerify)
00104         return;
00105 
00106     char CS = 0x00;
00107     for (int i = 0; i < index; i++)
00108         CS += data[i];
00109     checkSum = 0xFF - CS;
00110     isVerify = true;
00111 }