i trying image data (jpeg) ftdi ft2232 device in windows form using visual c++ clr. whole operation takes place on button click. writing received data .bin file in read operation itself. no of bytes receive around 19k , file has 57k bytes
i not allowed upload images sharing code , wring output getting
ft_handle fthandle; ft_status ftstatus; dword byteswritten; //dword 32 bit unsigned dword rxqueuebytes=0; dword txqueuebytes; dword buff = 0; char txbuffer[10]; // contains data write device char rxbuffer[16000]; // contains data recieved ftdi devide dword bytesreceived; dword rxbytes = 0; dword txbytes = 0; dword eventdword; ftstatus = ft_open(0, &fthandle); if (ftstatus != ft_ok) { // ft_open failed return; } txbuffer[txbytes++] = 0x30; txbuffer[txbytes++] = 0x2; txbuffer[txbytes++] = 0x0; txbuffer[txbytes++] = 0x42; txbuffer[txbytes++] = 0x01; ftstatus = ft_write(fthandle, txbuffer, txbytes, &txbytes); // data send command if (ftstatus == ft_ok) { printf(" ft_write ok \n"); sleep(5000); } ft_getqueuestatus(fthandle, &rxqueuebytes); // read queue if (ftstatus == ft_ok) { printf(" (after wtite)rx_queue_bytes = %i\n", rxqueuebytes); } ft_getstatus(fthandle, &rxqueuebytes, &txqueuebytes, &eventdword); // read queue if (ftstatus == ft_ok) { printf(" (after wtite)rx_queue_bytes = %i\n", rxqueuebytes); printf(" (after wtite)txqueuebytes = %i\n", txqueuebytes); printf(" (after wtite)eventdword = %i\n\n\n\n", eventdword); } ftstatus = ft_read(fthandle, rxbuffer, rxqueuebytes, &rxbytes); if (ftstatus == ft_ok) { printf(" ft_read ok\n"); printf(" recieved byte = %c %c %c %c\n", rxbuffer); ofstream fout("imagedata.bin"); //writing ti file if (fout.is_open()) { //file opened here printf("file opened successfully!!\n"); (int = 0; != rxqueuebytes; i++) { //if (rxbuffer[i]==31) fout << rxbuffer[i] << endl; //writing ith character of array in file } printf("array data saved file imagedata"); } else //file not opened { printf("file not opened."); } } else { printf(" ft_read failed"); } getchar(); ft_close(fthandle); return; the output says
rx_queue_bytes = 19283 the properties of imagedata.bin says has 57892 bytes please explain
opening file in binary mode , removing endl in fout command line solved problem.
ofstream fout("imagedata.dat", ios::out| ios::binary); if (fout.is_open()) { //file opened here printf("file opened successfully!!\n"); (int = 0; < img_read_index; i++) { fout << point[i] ; //writing ith character of array in file } printf("array data saved file imagedata"); fout.close(); } else //file not opened { printf("file not opened."); } 