FreeCalypso > hg > fc-usbser-tools

annotate duart28/find_usb.c @ 27:2413a54a1bfc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-duart28-conf started
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 09 Sep 2023 17:53:21 +0000
parents
children b9ecfa54fe2b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
27
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module implements the step of locating a connected FreeCalypso DUART28
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * device (either C or S) at the libusb level, without booting off the kernel
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * driver and claiming the interface yet.
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 */
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <stdio.h>
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <stdlib.h>
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <string.h>
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <strings.h>
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <usb.h>
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include "../libuwrap/prelim_init.h"
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 static void
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 get_string(usb_dev_handle *usbh, int index, char *buf, size_t buflen)
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 int rc;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 rc = usb_get_string_simple(usbh, index, buf, buflen);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 if (rc <= 0) {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 fprintf(stderr, "error: USB string retrieval failed\n");
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 exit(1);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 static void
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 report_found_dev(struct usb_device *dev, unsigned usb_pid, char string_letter)
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 printf("Found FreeCalypso DUART28 adapter at bus %s device %s,\n",
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 dev->bus->dirname, dev->filename);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 if (usb_pid == 0x7152 && string_letter == 'C')
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 printf("presenting as DUART28C\n");
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 else if (usb_pid == 0x6010 && string_letter == 'S')
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 printf("presenting as DUART28S\n");
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 else
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 printf("presenting with inconsistent ID!\n");
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 static int
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 is_match(struct usb_device *dev)
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 struct usb_device_descriptor *desc = &dev->descriptor;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 usb_dev_handle *usbh;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 char strbuf[1024];
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 if (desc->idVendor != 0x0403)
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 return 0;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 if (desc->idProduct != 0x6010 && desc->idProduct != 0x7152)
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 return 0;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 usbh = usb_open(dev);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 if (!usbh) {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 fprintf(stderr, "error: usb_open() failed\n");
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 exit(1);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 get_string(usbh, desc->iManufacturer, strbuf, sizeof strbuf);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 if (strcmp(strbuf, "FreeCalypso")) {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 usb_close(usbh);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 return 0;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 get_string(usbh, desc->iProduct, strbuf, sizeof strbuf);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 if (strcmp(strbuf, "DUART28C") && strcmp(strbuf, "DUART28S")) {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 usb_close(usbh);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 return 0;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 usb_close(usbh);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 report_found_dev(dev, desc->idProduct, strbuf[7]);
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 return 1;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 struct usb_device *
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 find_duart28_usbdev()
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 struct usb_bus *bus;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 struct usb_device *dev;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 libusb_prelim_init();
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 for (bus = usb_get_busses(); bus; bus = bus->next) {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 for (dev = bus->devices; dev; dev = dev->next) {
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 if (is_match(dev))
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 return dev;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 }
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 return 0;
2413a54a1bfc fc-duart28-conf started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 }