int8_t MessageIface::peekPacket( uint8_t **packet, uint8_t *length ) {
return(PeekPacket(&pf, packet, length));
}
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) {
if ( nrhs < 1 ) {
mexErrMsgTxt( "Need input buffer data\n" );
}
if ( !mxIsClass(prhs[0],"uint8") ) {
mexErrMsgTxt( "Input buffer must by of type uint8\n" );
}
// If the bytequeue and packet finder haven't been initialized then initialize them
if ( !initialized ) {
InitBQ(&pf_index_queue, pf_index_data, PF_INDEX_DATA_SIZE);
InitPacketFinder(&pf, &pf_index_queue);
initialized = true;
}
// Get length of the buffer
int buflen = mxGetM(prhs[0]);
if (buflen > 255) {
mexErrMsgTxt( "Length of input buffer is too long, tell Uriah to fix this code \n" );
}
// Get Buffer ... hopefully this is robust
uint8_t *buf = (uint8_t*)mxGetPr( prhs[0] );
// Put bytes from buffer into byte queue
uint8_t status = PutBytes( &pf, buf, buflen );
#ifdef DEBUG
mexPrintf("buflen: %d\n", buflen);
for (uint8_t i=0; i<buflen; i++){
mexPrintf("data[%d]: %d\n", i, buf[i]);
}
mexPrintf("status: %d\n", status);
#endif
// Peek Packet Finder and see if there is a valid packet to be found
// if so, copy and return this data
uint8_t *rx_data;
uint8_t rx_len;
uint8_t msg_type;
uint8_t *msg_data;
if ( PeekPacket(&pf, &rx_data, &rx_len) ) {
#ifdef DEBUG
mexPrintf("Packet found\n");
mexPrintf("rx_len: %d\n", rx_len);
for (uint8_t i=0; i<rx_len; i++){
mexPrintf("rx_data[%d]: %d\n", i, rx_data[i]);
}
#endif
int dims[2] = {1,rx_len};
plhs[0] = mxCreateNumericArray(2, dims, mxUINT8_CLASS, mxREAL);
uint8_t *packet = (uint8_t*)mxGetPr(plhs[0]);
memcpy( packet, rx_data, rx_len );
DropPacket(&pf);
} else {
int dims[2] = {1,0};
plhs[0] = mxCreateNumericArray(2, dims, mxUINT8_CLASS, mxREAL);
}
}