/**
* Reopen a usb-serial port.
*/
static struct KFile *usb_serial_reopen(struct KFile *fd)
{
USBSerial *fds = USB_SERIAL_CAST(fd);
usb_serial_close(fd);
usb_serial_open(fds, fds->unit);
return 0;
}
/**
* Init serial driver for a usb-serial port \a unit.
*
* \return 0 if OK, a negative value in case of error.
*/
int usbser_init(struct USBSerial *fds, int unit)
{
memset(fds, 0, sizeof(*fds));
DB(fds->fd._type = KFT_USB_SERIAL);
fds->fd.reopen = usb_serial_reopen;
fds->fd.close = usb_serial_close;
fds->fd.read = usb_serial_read;
fds->fd.write = usb_serial_write;
/* TODO: properly implement error handling. */
fds->fd.error = usb_serial_error;
fds->fd.clearerr = usb_serial_clearerr;
return usb_serial_open(fds, unit);
}
int usb_serial_stdio(char *name)
{
unsigned int subdevice;
errno_r = 0;
if (usb_serial_open(name, &subdevice))
return -1;
// Nuke existing stdin, stdout, stderr
device_unregister(0);
device_unregister(1);
device_unregister(2);
// Register new stdin, stdout, stderr
device_register_char_fd(0, subdevice, NULL, usb_serial_read, NULL, usb_serial_rxready);
device_register_char_fd(1, subdevice, usb_serial_write, NULL, usb_serial_txready, NULL);
device_register_char_fd(2, subdevice, usb_serial_write, NULL, usb_serial_txready, NULL);
return 0;
}
