C8051F32x firmware infrastructure
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| 1 | /* |
| 2 | * lib/usb.c - Common USB code for F32Xbase tools |
| 3 | * |
| 4 | * Written 2008-2010 by Werner Almesberger |
| 5 | * Copyright 2008-2010 Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | |
| 14 | |
| 15 | #include <stdint.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <stdio.h> |
| 18 | #include <usb.h> |
| 19 | |
| 20 | |
| 21 | static uint16_t vendor = 0; |
| 22 | static uint16_t product = 0; |
| 23 | |
| 24 | |
| 25 | usb_dev_handle *open_usb(uint16_t default_vendor, uint16_t default_product) |
| 26 | { |
| 27 | const struct usb_bus *bus; |
| 28 | struct usb_device *dev; |
| 29 | usb_dev_handle *handle; |
| 30 | #ifdef DO_FULL_USB_BUREAUCRACY |
| 31 | int res; |
| 32 | #endif |
| 33 | |
| 34 | usb_init(); |
| 35 | usb_find_busses(); |
| 36 | usb_find_devices(); |
| 37 | |
| 38 | for (bus = usb_get_busses(); bus; bus = bus->next) |
| 39 | for (dev = bus->devices; dev; dev = dev->next) { |
| 40 | if (dev->descriptor.idVendor != |
| 41 | (vendor ? vendor : default_vendor)) |
| 42 | continue; |
| 43 | if (dev->descriptor.idProduct != |
| 44 | (product ? product : default_product)) |
| 45 | continue; |
| 46 | handle = usb_open(dev); |
| 47 | #ifdef DO_FULL_USB_BUREAUCRACY |
| 48 | if (!handle) |
| 49 | return NULL; |
| 50 | res = usb_set_configuration(handle, 1); |
| 51 | if (res < 0) { |
| 52 | fprintf(stderr, "usb_set_configuration: %d\n", |
| 53 | res); |
| 54 | return NULL; |
| 55 | } |
| 56 | res = usb_claim_interface(handle, 0); |
| 57 | if (res < 0) { |
| 58 | fprintf(stderr, "usb_claim_interface: %d\n", |
| 59 | res); |
| 60 | return NULL; |
| 61 | } |
| 62 | res = usb_set_altinterface(handle, 0); |
| 63 | if (res < 0) { |
| 64 | fprintf(stderr, "usb_set_altinterface: %d\n", |
| 65 | res); |
| 66 | return NULL; |
| 67 | } |
| 68 | #endif |
| 69 | return handle; |
| 70 | } |
| 71 | return NULL; |
| 72 | } |
| 73 | |
| 74 | |
| 75 | static void bad_id(const char *id) |
| 76 | { |
| 77 | fprintf(stderr, "\"%s\" is not a valid vendor:product ID\n", id); |
| 78 | exit(1); |
| 79 | } |
| 80 | |
| 81 | |
| 82 | void parse_usb_id(const char *id) |
| 83 | { |
| 84 | unsigned long tmp; |
| 85 | char *end; |
| 86 | |
| 87 | tmp = strtoul(id, &end, 16); |
| 88 | if (*end != ':') |
| 89 | bad_id(id); |
| 90 | if (tmp > 0xffff) |
| 91 | bad_id(id); |
| 92 | vendor = tmp; |
| 93 | tmp = strtoul(end+1, &end, 16); |
| 94 | if (*end) |
| 95 | bad_id(id); |
| 96 | if (tmp > 0xffff) |
| 97 | bad_id(id); |
| 98 | product = tmp; |
| 99 | } |
| 100 |
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