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Diffstat (limited to 'commandline/usb-libusb.c')
| -rw-r--r-- | commandline/usb-libusb.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/commandline/usb-libusb.c b/commandline/usb-libusb.c deleted file mode 100644 index 886da3b..0000000 --- a/commandline/usb-libusb.c +++ /dev/null @@ -1,203 +0,0 @@ -/* Name: usb-libusb.c - * Project: usbcalls library - * Author: Christian Starkjohann - * Creation Date: 2006-02-02 - * Tabsize: 4 - * Copyright: (c) 2006 by OBJECTIVE DEVELOPMENT Software GmbH - * License: Proprietary, free under certain conditions. See Documentation. - * This Revision: $Id: usb-libusb.c 323 2007-03-29 17:25:03Z cs $ - */ - -/* -General Description: -This module implements USB HID report receiving/sending based on libusb. It -does not read and parse the report descriptor. You must therefore be careful -to pass correctly formatted data blocks of correct size. In order to be -compatible with the Windows implementation, we add a zero report ID for all -reports which don't have an ID. Since we don't parse the descriptor, the caller -must tell us whether report IDs are used or not in usbOpenDevice(). - -The implementation of dummy report IDs is a hack. Whether they are used is -stored in a global variable, not in the device structure (just laziness, don't -want to allocate memory for that). If you open more than one device and the -devices differ in report ID usage, you must change the code. -*/ - -#include <stdio.h> -#include <string.h> -#include <usb.h> - -#define usbDevice usb_dev_handle /* use libusb's device structure */ -#include "usbcalls.h" - -/* ------------------------------------------------------------------------- */ - -#define USBRQ_HID_GET_REPORT 0x01 -#define USBRQ_HID_SET_REPORT 0x09 - -static int usesReportIDs; - -/* ------------------------------------------------------------------------- */ - -static int usbGetStringAscii(usb_dev_handle *dev, int index, int langid, char *buf, int buflen) -{ -char buffer[256]; -int rval, i; - - if((rval = usb_control_msg(dev, USB_ENDPOINT_IN, USB_REQ_GET_DESCRIPTOR, (USB_DT_STRING << 8) + index, langid, buffer, sizeof(buffer), 1000)) < 0) - return rval; - if(buffer[1] != USB_DT_STRING) - return 0; - if((unsigned char)buffer[0] < rval) - rval = (unsigned char)buffer[0]; - rval /= 2; - /* lossy conversion to ISO Latin1 */ - for(i=1;i<rval;i++){ - if(i > buflen) /* destination buffer overflow */ - break; - buf[i-1] = buffer[2 * i]; - if(buffer[2 * i + 1] != 0) /* outside of ISO Latin1 range */ - buf[i-1] = '?'; - } - buf[i-1] = 0; - return i-1; -} - -int usbOpenDevice(usbDevice_t **device, int vendor, char *vendorName, int product, char *productName, int _usesReportIDs) -{ -struct usb_bus *bus; -struct usb_device *dev; -usb_dev_handle *handle = NULL; -int errorCode = USB_ERROR_NOTFOUND; -static int didUsbInit = 0; - - if(!didUsbInit){ - usb_init(); - didUsbInit = 1; - } - usb_find_busses(); - usb_find_devices(); - for(bus=usb_get_busses(); bus; bus=bus->next){ - for(dev=bus->devices; dev; dev=dev->next){ - if(dev->descriptor.idVendor == vendor && dev->descriptor.idProduct == product){ - char string[256]; - int len; - handle = usb_open(dev); /* we need to open the device in order to query strings */ - if(!handle){ - errorCode = USB_ERROR_ACCESS; - fprintf(stderr, "Warning: cannot open USB device: %s\n", usb_strerror()); - continue; - } - if(vendorName == NULL && productName == NULL){ /* name does not matter */ - break; - } - /* now check whether the names match: */ - len = usbGetStringAscii(handle, dev->descriptor.iManufacturer, 0x0409, string, sizeof(string)); - if(len < 0){ - errorCode = USB_ERROR_IO; - fprintf(stderr, "Warning: cannot query manufacturer for device: %s\n", usb_strerror()); - }else{ - errorCode = USB_ERROR_NOTFOUND; - /* fprintf(stderr, "seen device from vendor ->%s<-\n", string); */ - if(strcmp(string, vendorName) == 0){ - len = usbGetStringAscii(handle, dev->descriptor.iProduct, 0x0409, string, sizeof(string)); - if(len < 0){ - errorCode = USB_ERROR_IO; - fprintf(stderr, "Warning: cannot query product for device: %s\n", usb_strerror()); - }else{ - errorCode = USB_ERROR_NOTFOUND; - /* fprintf(stderr, "seen product ->%s<-\n", string); */ - if(strcmp(string, productName) == 0) - break; - } - } - } - usb_close(handle); - handle = NULL; - } - } - if(handle) - break; - } - if(handle != NULL){ - int rval, retries = 3; - if(usb_set_configuration(handle, 1)){ - fprintf(stderr, "Warning: could not set configuration: %s\n", usb_strerror()); - } - /* now try to claim the interface and detach the kernel HID driver on - * linux and other operating systems which support the call. - */ - while((rval = usb_claim_interface(handle, 0)) != 0 && retries-- > 0){ -#ifdef LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP - if(usb_detach_kernel_driver_np(handle, 0) < 0){ - fprintf(stderr, "Warning: could not detach kernel HID driver: %s\n", usb_strerror()); - } -#endif - } -#ifndef __APPLE__ - if(rval != 0) - fprintf(stderr, "Warning: could not claim interface\n"); -#endif -/* Continue anyway, even if we could not claim the interface. Control transfers - * should still work. - */ - errorCode = 0; - *device = handle; - usesReportIDs = _usesReportIDs; - } - return errorCode; -} - -/* ------------------------------------------------------------------------- */ - -void usbCloseDevice(usbDevice_t *device) -{ - if(device != NULL) - usb_close(device); -} - -/* ------------------------------------------------------------------------- */ - -int usbSetReport(usbDevice_t *device, int reportType, char *buffer, int len) -{ -int bytesSent; - - if(!usesReportIDs){ - buffer++; /* skip dummy report ID */ - len--; - } - bytesSent = usb_control_msg(device, USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_ENDPOINT_OUT, USBRQ_HID_SET_REPORT, reportType << 8 | buffer[0], 0, buffer, len, 5000); - if(bytesSent != len){ - if(bytesSent < 0) - fprintf(stderr, "Error sending message: %s\n", usb_strerror()); - return USB_ERROR_IO; - } - return 0; -} - -/* ------------------------------------------------------------------------- */ - -int usbGetReport(usbDevice_t *device, int reportType, int reportNumber, char *buffer, int *len) -{ -int bytesReceived, maxLen = *len; - - if(!usesReportIDs){ - buffer++; /* make room for dummy report ID */ - maxLen--; - } - bytesReceived = usb_control_msg(device, USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_ENDPOINT_IN, USBRQ_HID_GET_REPORT, reportType << 8 | reportNumber, 0, buffer, maxLen, 5000); - if(bytesReceived < 0){ - fprintf(stderr, "Error sending message: %s\n", usb_strerror()); - return USB_ERROR_IO; - } - *len = bytesReceived; - if(!usesReportIDs){ - buffer[-1] = reportNumber; /* add dummy report ID */ - *len++; - } - return 0; -} - -/* ------------------------------------------------------------------------- */ - - |