FreeCalypso > hg > fc-usbser-tools

annotate libuwrap/claim_if.c @ 65:225dc1d9f2f1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ftee-decode program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 12 Sep 2023 22:23:30 +0000
parents 5160f6717903
children 5cbde3c80c24
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
44
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
2 * The operation of programming an FTDI EEPROM *can* be done without ever
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
3 * claiming any of the chip's interfaces and without unbinding ttyUSB from
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
4 * any channel, even if we are doing the special magic sequence for FT232R.
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
5 * However, given the identity-altering nature of EEPROM programming it is
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
6 * generally a good idea to claim all interfaces and unbind all ttyUSB
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
7 * devices, and in the case of FT232R the magic sequence breaks normal
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
8 * UART operation.
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
9 *
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
10 * This library module provides building block functions: a function for
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
11 * claiming one interface and a higher-level function claiming all interfaces
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
12 * of a multichannel device.
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 */
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #include <stdio.h>
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #include <stdlib.h>
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 #include <usb.h>
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 #include "open_close.h"
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19
40
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
20 void usbwrap_claim_interface(usb_dev_handle *usbh, int ifnum, int detach)
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 {
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 if (detach)
40
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
23 usb_detach_kernel_driver_np(usbh, ifnum);
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
24 if (usb_claim_interface(usbh, ifnum) != 0) {
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 fprintf(stderr, "error: usb_claim_interface() failed\n");
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 exit(1);
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 }
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 }
44
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
29
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
30 void usbwrap_claim_all_ifs(usb_dev_handle *usbh, unsigned nchannels)
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
31 {
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
32 unsigned n;
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
33
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
34 for (n = 0; n < nchannels; n++)
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
35 usbwrap_claim_interface(usbh, n, 1);
5160f6717903 libuwrap: implement function to claim/unbind all interfaces
Mychaela Falconia <falcon@freecalypso.org>
parents: 40
diff changeset
36 }