Target smart card reader serial#

It's configured at in Canonical mode of termios.Д¬anonical mode because the responses from the reader end in ' ', so its better handled in Canonical mode since it reads the device till ' ' is received (pls correct me if I'm wrong).ДЇirst I call init() fn and then get_rdr_version().

The device as I mentioned is usb-to-serial ( module: ftdi_sio ) device.

Target smart card reader serial#

The mifare_1K structure contains the file descriptor for serial device, termios structure, and various buffers I am using. Printf('reading done. ') // this doesn't print. If( chars_written serialfd,ptr->data_buf,14) Int chars_written = write(ptr->serialfd,'$1V ',4) Int get_mifare_rdr_version(struct mifare_1K *ptr, char *data) Ret = tcsetattr(ptr->serialfd,TCSANOW,&ptr->serialdev) ptr->serialdev.c_cc = 1 // read unblocks only after at least one received char. commented below line as suggested by A.H below, since it's not needed in CANONICAL mode Ptr->serialdev.c_lflag = ( ICANON ) // CANONICAL mode, means read till newline char ' '. Ptr->serialdev.c_cflag = ( CS8 | CREAD | B38400 ) // 8 bits, receive enable, baud for rdr Ptr->serialdev.c_iflag = 0 // no i/p flags Ptr->serialfd = fd // save file descriptor Int fd = open(rdr_devnode, O_RDWR|O_NOCTTY ) Here is the code snippet : int mifare_rdr_init(struct mifare_1K * ptr, char *rdr_devnode)Д«zero(ptr, sizeof(struct mifare_1K)) // zero the entire structure The code works fine on the PC, but when I cross-compile and try it out on an ARM9 target, it is able to open the device and even writing the command to the device, but the read command blocks indefinitely. I am trying to interface a contact-less smart card reader over UART (usbserial) using termios framework under Linux.