【Qt】Linux HID API
来源:互联网 发布:约维蒂奇 知乎 编辑:程序博客网 时间:2024/04/28 15:42
Linux下HID可以使用libusb与hidapi结合,我是将hidapi略作修改变成一个自己的interface,以下在Qt中使用。
1、首先编译libusb(这里是libusb-1.0.21),本机直接make install --prefix=$(pwd)/_libusb,交叉编译需要设定对应编译器。
2、复制libusb.h和libusb的动态库(.so)和静态库(.a)到自己建立的文件夹,例如hidapi,我这里建立了三个平台的库,并且使用静态库。
3、使用修改hidapi的Qt程序如下,hidapi.h和hid-libusb.c从hidapi中提取修改,hidinterface为再封装的代码,其中可以自行修改PIC和VID,main的c为使用实例:
a) .pro文件
[cpp] view plain copy
- QT -= core
- QT -= gui
- CONFIG += c++11
- TARGET = HIDAPI
- CONFIG += console
- CONFIG -= app_bundle
- TEMPLATE = app
- SOURCES += \
- hidlib/hid-libusb.c \
- hidlib/hidinterface.c \
- main.c
- HEADERS += \
- hidlib/hidapi.h \
- hidlib/hidinterface.h
- #static
- message("$$myPlatform compile")
- INCLUDEPATH += myPlatform/libusb/include/libusb-1.0/
PWD/lib/ - LIBS += myPlatform/libusb/lib/libusb-1.0.a
PWD/lib/
b) hidapi.h
[cpp] view plain copy
- /*******************************************************
- HIDAPI - Multi-Platform library for
- communication with HID devices.
- Alan Ott
- Signal 11 Software
- 8/22/2009
- Copyright 2009, All Rights Reserved.
- At the discretion of the user of this library,
- this software may be licensed under the terms of the
- GNU Public License v3, a BSD-Style license, or the
- original HIDAPI license as outlined in the LICENSE.txt,
- LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
- files located at the root of the source distribution.
- These files may also be found in the public source
- code repository located at:
- http://github.com/signal11/hidapi .
- ********************************************************/
- /** @file
- * @defgroup API hidapi API
- */
- #ifndef HIDAPI_H__
- #define HIDAPI_H__
- #include <wchar.h>
- #ifdef _WIN32
- #define HID_API_EXPORT __declspec(dllexport)
- #define HID_API_CALL
- #else
- #define HID_API_EXPORT /**< API export macro */
- #define HID_API_CALL /**< API call macro */
- #endif
- #define HID_API_EXPORT_CALL HID_API_EXPORT HID_API_CALL /**< API export and call macro*/
- #ifdef __cplusplus
- extern "C" {
- #endif
- struct hid_device_;
- typedef struct hid_device_ hid_device; /**< opaque hidapi structure */
- /** hidapi info structure */
- struct hid_device_info {
- /** Platform-specific device path */
- char *path;
- /** Device Vendor ID */
- unsigned short vendor_id;
- /** Device Product ID */
- unsigned short product_id;
- /** Serial Number */
- wchar_t *serial_number;
- /** Device Release Number in binary-coded decimal,
- also known as Device Version Number */
- unsigned short release_number;
- /** Manufacturer String */
- wchar_t *manufacturer_string;
- /** Product string */
- wchar_t *product_string;
- /** Usage Page for this Device/Interface
- (Windows/Mac only). */
- unsigned short usage_page;
- /** Usage for this Device/Interface
- (Windows/Mac only).*/
- unsigned short usage;
- /** The USB interface which this logical device
- represents. Valid on both Linux implementations
- in all cases, and valid on the Windows implementation
- only if the device contains more than one interface. */
- int interface_number;
- /** Pointer to the next device */
- struct hid_device_info *next;
- };
- /** @brief Initialize the HIDAPI library.
- This function initializes the HIDAPI library. Calling it is not
- strictly necessary, as it will be called automatically by
- hid_enumerate() and any of the hid_open_*() functions if it is
- needed. This function should be called at the beginning of
- execution however, if there is a chance of HIDAPI handles
- being opened by different threads simultaneously.
- @ingroup API
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_init(void);
- /** @brief Finalize the HIDAPI library.
- This function frees all of the static data associated with
- HIDAPI. It should be called at the end of execution to avoid
- memory leaks.
- @ingroup API
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_exit(void);
- /** @brief Enumerate the HID Devices.
- This function returns a linked list of all the HID devices
- attached to the system which match vendor_id and product_id.
- If @p vendor_id and @p product_id are both set to 0, then
- all HID devices will be returned.
- @ingroup API
- @param vendor_id The Vendor ID (VID) of the types of device
- to open.
- @param product_id The Product ID (PID) of the types of
- device to open.
- @returns
- This function returns a pointer to a linked list of type
- struct #hid_device, containing information about the HID devices
- attached to the system, or NULL in the case of failure. Free
- this linked list by calling hid_free_enumeration().
- */
- struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id);
- /** @brief Free an enumeration Linked List
- This function frees a linked list created by hid_enumerate().
- @ingroup API
- @param devs Pointer to a list of struct_device returned from
- hid_enumerate().
- */
- void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs);
- /** @brief Open a HID device using a Vendor ID (VID), Product ID
- (PID) and optionally a serial number.
- If @p serial_number is NULL, the first device with the
- specified VID and PID is opened.
- @ingroup API
- @param vendor_id The Vendor ID (VID) of the device to open.
- @param product_id The Product ID (PID) of the device to open.
- @param serial_number The Serial Number of the device to open
- (Optionally NULL).
- @returns
- This function returns a pointer to a #hid_device object on
- success or NULL on failure.
- */
- HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, wchar_t *serial_number);
- /** @brief Open a HID device by its path name.
- The path name be determined by calling hid_enumerate(), or a
- platform-specific path name can be used (eg: /dev/hidraw0 on
- Linux).
- @ingroup API
- @param path The path name of the device to open
- @returns
- This function returns a pointer to a #hid_device object on
- success or NULL on failure.
- */
- HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path);
- /** @brief Write an Output report to a HID device.
- The first byte of @p data[] must contain the Report ID. For
- devices which only support a single report, this must be set
- to 0x0. The remaining bytes contain the report data. Since
- the Report ID is mandatory, calls to hid_write() will always
- contain one more byte than the report contains. For example,
- if a hid report is 16 bytes long, 17 bytes must be passed to
- hid_write(), the Report ID (or 0x0, for devices with a
- single report), followed by the report data (16 bytes). In
- this example, the length passed in would be 17.
- hid_write() will send the data on the first OUT endpoint, if
- one exists. If it does not, it will send the data through
- the Control Endpoint (Endpoint 0).
- @ingroup API
- @param device A device handle returned from hid_open().
- @param data The data to send, including the report number as
- the first byte.
- @param length The length in bytes of the data to send.
- @returns
- This function returns the actual number of bytes written and
- -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length);
- /** @brief Read an Input report from a HID device with timeout.
- Input reports are returned
- to the host through the INTERRUPT IN endpoint. The first byte will
- contain the Report number if the device uses numbered reports.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param data A buffer to put the read data into.
- @param length The number of bytes to read. For devices with
- multiple reports, make sure to read an extra byte for
- the report number.
- @param milliseconds timeout in milliseconds or -1 for blocking wait.
- @returns
- This function returns the actual number of bytes read and
- -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds);
- /** @brief Read an Input report from a HID device.
- Input reports are returned
- to the host through the INTERRUPT IN endpoint. The first byte will
- contain the Report number if the device uses numbered reports.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param data A buffer to put the read data into.
- @param length The number of bytes to read. For devices with
- multiple reports, make sure to read an extra byte for
- the report number.
- @returns
- This function returns the actual number of bytes read and
- -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_read(hid_device *device, unsigned char *data, size_t length);
- /** @brief Set the device handle to be non-blocking.
- In non-blocking mode calls to hid_read() will return
- immediately with a value of 0 if there is no data to be
- read. In blocking mode, hid_read() will wait (block) until
- there is data to read before returning.
- Nonblocking can be turned on and off at any time.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param nonblock enable or not the nonblocking reads
- - 1 to enable nonblocking
- - 0 to disable nonblocking.
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *device, int nonblock);
- /** @brief Send a Feature report to the device.
- Feature reports are sent over the Control endpoint as a
- Set_Report transfer. The first byte of @p data[] must
- contain the Report ID. For devices which only support a
- single report, this must be set to 0x0. The remaining bytes
- contain the report data. Since the Report ID is mandatory,
- calls to hid_send_feature_report() will always contain one
- more byte than the report contains. For example, if a hid
- report is 16 bytes long, 17 bytes must be passed to
- hid_send_feature_report(): the Report ID (or 0x0, for
- devices which do not use numbered reports), followed by the
- report data (16 bytes). In this example, the length passed
- in would be 17.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param data The data to send, including the report number as
- the first byte.
- @param length The length in bytes of the data to send, including
- the report number.
- @returns
- This function returns the actual number of bytes written and
- -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *device, const unsigned char *data, size_t length);
- /** @brief Get a feature report from a HID device.
- Make sure to set the first byte of @p data[] to the Report
- ID of the report to be read. Make sure to allow space for
- this extra byte in @p data[].
- @ingroup API
- @param device A device handle returned from hid_open().
- @param data A buffer to put the read data into, including
- the Report ID. Set the first byte of @p data[] to the
- Report ID of the report to be read.
- @param length The number of bytes to read, including an
- extra byte for the report ID. The buffer can be longer
- than the actual report.
- @returns
- This function returns the number of bytes read and
- -1 on error.
- */
- int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *device, unsigned char *data, size_t length);
- /** @brief Close a HID device.
- @ingroup API
- @param device A device handle returned from hid_open().
- */
- void HID_API_EXPORT HID_API_CALL hid_close(hid_device *device);
- /** @brief Get The Manufacturer String from a HID device.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param string A wide string buffer to put the data into.
- @param maxlen The length of the buffer in multiples of wchar_t.
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *device, wchar_t *string, size_t maxlen);
- /** @brief Get The Product String from a HID device.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param string A wide string buffer to put the data into.
- @param maxlen The length of the buffer in multiples of wchar_t.
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT_CALL hid_get_product_string(hid_device *device, wchar_t *string, size_t maxlen);
- /** @brief Get The Serial Number String from a HID device.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param string A wide string buffer to put the data into.
- @param maxlen The length of the buffer in multiples of wchar_t.
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *device, wchar_t *string, size_t maxlen);
- /** @brief Get a string from a HID device, based on its string index.
- @ingroup API
- @param device A device handle returned from hid_open().
- @param string_index The index of the string to get.
- @param string A wide string buffer to put the data into.
- @param maxlen The length of the buffer in multiples of wchar_t.
- @returns
- This function returns 0 on success and -1 on error.
- */
- int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *device, int string_index, wchar_t *string, size_t maxlen);
- /** @brief Get a string describing the last error which occurred.
- @ingroup API
- @param device A device handle returned from hid_open().
- @returns
- This function returns a string containing the last error
- which occurred or NULL if none has occurred.
- */
- HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device);
- #ifdef __cplusplus
- }
- #endif
- #endif
c) hidapi-libusb.c
[cpp] view plain copy
- /*******************************************************
- HIDAPI - Multi-Platform library for
- communication with HID devices.
- Alan Ott
- Signal 11 Software
- 8/22/2009
- Linux Version - 6/2/2010
- Libusb Version - 8/13/2010
- Copyright 2009, All Rights Reserved.
- At the discretion of the user of this library,
- this software may be licensed under the terms of the
- GNU Public License v3, a BSD-Style license, or the
- original HIDAPI license as outlined in the LICENSE.txt,
- LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
- files located at the root of the source distribution.
- These files may also be found in the public source
- code repository located at:
- http://github.com/signal11/hidapi .
- ********************************************************/
- #define _GNU_SOURCE // needed for wcsdup() before glibc 2.10
- /* C */
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <ctype.h>
- #include <locale.h>
- #include <errno.h>
- /* Unix */
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/ioctl.h>
- #include <sys/utsname.h>
- #include <fcntl.h>
- #include <pthread.h>
- #include <wchar.h>
- /* GNU / LibUSB */
- #include <libusb.h>
- #include "iconv.h"
- #include "hidapi.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifdef DEBUG_PRINTF
- #define LOG(...) fprintf(stderr, __VA_ARGS__)
- #else
- #define LOG(...) do {} while (0)
- #endif
- /* Uncomment to enable the retrieval of Usage and Usage Page in
- hid_enumerate(). Warning, this is very invasive as it requires the detach
- and re-attach of the kernel driver. See comments inside hid_enumerate().
- Linux/libusb HIDAPI programs are encouraged to use the interface number
- instead to differentiate between interfaces on a composite HID device. */
- /*#define INVASIVE_GET_USAGE*/
- /* Linked List of input reports received from the device. */
- struct input_report {
- uint8_t *data;
- size_t len;
- struct input_report *next;
- };
- struct hid_device_ {
- /* Handle to the actual device. */
- libusb_device_handle *device_handle;
- /* Endpoint information */
- int input_endpoint;
- int output_endpoint;
- int input_ep_max_packet_size;
- /* The interface number of the HID */
- int interface;
- /* Indexes of Strings */
- int manufacturer_index;
- int product_index;
- int serial_index;
- /* Whether blocking reads are used */
- int blocking; /* boolean */
- /* Read thread objects */
- pthread_t thread;
- pthread_mutex_t mutex; /* Protects input_reports */
- pthread_cond_t condition;
- pthread_barrier_t barrier; /* Ensures correct startup sequence */
- int shutdown_thread;
- struct libusb_transfer *transfer;
- /* List of received input reports. */
- struct input_report *input_reports;
- };
- static int initialized = 0;
- uint16_t get_usb_code_for_current_locale(void);
- static int return_data(hid_device *dev, unsigned char *data, size_t length);
- static hid_device *new_hid_device(void)
- {
- hid_device *dev = calloc(1, sizeof(hid_device));
- dev->device_handle = NULL;
- dev->input_endpoint = 0;
- dev->output_endpoint = 0;
- dev->input_ep_max_packet_size = 0;
- dev->interface = 0;
- dev->manufacturer_index = 0;
- dev->product_index = 0;
- dev->serial_index = 0;
- dev->blocking = 1;
- dev->shutdown_thread = 0;
- dev->transfer = NULL;
- dev->input_reports = NULL;
- pthread_mutex_init(&dev->mutex, NULL);
- pthread_cond_init(&dev->condition, NULL);
- pthread_barrier_init(&dev->barrier, NULL, 2);
- return dev;
- }
- static void free_hid_device(hid_device *dev)
- {
- /* Clean up the thread objects */
- pthread_barrier_destroy(&dev->barrier);
- pthread_cond_destroy(&dev->condition);
- pthread_mutex_destroy(&dev->mutex);
- /* Free the device itself */
- free(dev);
- }
- #if 0
- //TODO: Implement this funciton on Linux.
- static void register_error(hid_device *device, const char *op)
- {
- }
- #endif
- #ifdef INVASIVE_GET_USAGE
- /* Get bytes from a HID Report Descriptor.
- Only call with a num_bytes of 0, 1, 2, or 4. */
- static uint32_t get_bytes(uint8_t *rpt, size_t len, size_t num_bytes, size_t cur)
- {
- /* Return if there aren't enough bytes. */
- if (cur + num_bytes >= len)
- return 0;
- if (num_bytes == 0)
- return 0;
- else if (num_bytes == 1) {
- return rpt[cur+1];
- }
- else if (num_bytes == 2) {
- return (rpt[cur+2] * 256 + rpt[cur+1]);
- }
- else if (num_bytes == 4) {
- return (rpt[cur+4] * 0x01000000 +
- rpt[cur+3] * 0x00010000 +
- rpt[cur+2] * 0x00000100 +
- rpt[cur+1] * 0x00000001);
- }
- else
- return 0;
- }
- /* Retrieves the device's Usage Page and Usage from the report
- descriptor. The algorithm is simple, as it just returns the first
- Usage and Usage Page that it finds in the descriptor.
- The return value is 0 on success and -1 on failure. */
- static int get_usage(uint8_t *report_descriptor, size_t size,
- unsigned short *usage_page, unsigned short *usage)
- {
- int i = 0;
- int size_code;
- int data_len, key_size;
- int usage_found = 0, usage_page_found = 0;
- while (i < size) {
- int key = report_descriptor[i];
- int key_cmd = key & 0xfc;
- //printf("key: %02hhx\n", key);
- if ((key & 0xf0) == 0xf0) {
- /* This is a Long Item. The next byte contains the
- length of the data section (value) for this key.
- See the HID specification, version 1.11, section
- 6.2.2.3, titled "Long Items." */
- if (i+1 < size)
- data_len = report_descriptor[i+1];
- else
- data_len = 0; /* malformed report */
- key_size = 3;
- }
- else {
- /* This is a Short Item. The bottom two bits of the
- key contain the size code for the data section
- (value) for this key. Refer to the HID
- specification, version 1.11, section 6.2.2.2,
- titled "Short Items." */
- size_code = key & 0x3;
- switch (size_code) {
- case 0:
- case 1:
- case 2:
- data_len = size_code;
- break;
- case 3:
- data_len = 4;
- break;
- default:
- /* Can't ever happen since size_code is & 0x3 */
- data_len = 0;
- break;
- };
- key_size = 1;
- }
- if (key_cmd == 0x4) {
- *usage_page = get_bytes(report_descriptor, size, data_len, i);
- usage_page_found = 1;
- //printf("Usage Page: %x\n", (uint32_t)*usage_page);
- }
- if (key_cmd == 0x8) {
- *usage = get_bytes(report_descriptor, size, data_len, i);
- usage_found = 1;
- //printf("Usage: %x\n", (uint32_t)*usage);
- }
- if (usage_page_found && usage_found)
- return 0; /* success */
- /* Skip over this key and it's associated data */
- i += data_len + key_size;
- }
- return -1; /* failure */
- }
- #endif // INVASIVE_GET_USAGE
- /* Get the first language the device says it reports. This comes from
- USB string #0. */
- static uint16_t get_first_language(libusb_device_handle *dev)
- {
- uint16_t buf[32];
- int len;
- /* Get the string from libusb. */
- len = libusb_get_string_descriptor(dev,
- 0x0, /* String ID */
- 0x0, /* Language */
- (unsigned char*)buf,
- sizeof(buf));
- if (len < 4)
- return 0x0;
- return buf[1]; // First two bytes are len and descriptor type.
- }
- static int is_language_supported(libusb_device_handle *dev, uint16_t lang)
- {
- uint16_t buf[32];
- int len;
- int i;
- /* Get the string from libusb. */
- len = libusb_get_string_descriptor(dev,
- 0x0, /* String ID */
- 0x0, /* Language */
- (unsigned char*)buf,
- sizeof(buf));
- if (len < 4)
- return 0x0;
- len /= 2; /* language IDs are two-bytes each. */
- /* Start at index 1 because there are two bytes of protocol data. */
- for (i = 1; i < len; i++) {
- if (buf[i] == lang)
- return 1;
- }
- return 0;
- }
- /* This function returns a newly allocated wide string containing the USB
- device string numbered by the index. The returned string must be freed
- by using free(). */
- static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx)
- {
- char buf[512];
- int len;
- wchar_t *str = NULL;
- wchar_t wbuf[256];
- /* iconv variables */
- iconv_t ic;
- size_t inbytes;
- size_t outbytes;
- size_t res;
- char *inptr;
- char *outptr;
- /* Determine which language to use. */
- uint16_t lang;
- lang = get_usb_code_for_current_locale();
- if (!is_language_supported(dev, lang))
- lang = get_first_language(dev);
- /* Get the string from libusb. */
- len = libusb_get_string_descriptor(dev,
- idx,
- lang,
- (unsigned char*)buf,
- sizeof(buf));
- if (len < 0)
- return NULL;
- buf[sizeof(buf)-1] = '\0';
- if (len+1 < sizeof(buf))
- buf[len+1] = '\0';
- /* Initialize iconv. */
- ic = iconv_open("UTF-32", "UTF-16");
- if (ic == (iconv_t)-1)
- return NULL;
- /* Convert to UTF-32 (wchar_t on glibc systems).
- Skip the first character (2-bytes). */
- inptr = buf+2;
- inbytes = len-2;
- outptr = (char*) wbuf;
- outbytes = sizeof(wbuf);
- res = iconv(ic, &inptr, &inbytes, &outptr, &outbytes);
- if (res == (size_t)-1)
- goto err;
- /* Write the terminating NULL. */
- wbuf[sizeof(wbuf)/sizeof(wbuf[0])-1] = 0x00000000;
- if (outbytes >= sizeof(wbuf[0]))
- *((wchar_t*)outptr) = 0x00000000;
- /* Allocate and copy the string. */
- str = wcsdup(wbuf+1);
- err:
- iconv_close(ic);
- return str;
- }
- static char *make_path(libusb_device *dev, int interface_number)
- {
- char str[64];
- snprintf(str, sizeof(str), "%04x:%04x:%02x",
- libusb_get_bus_number(dev),
- libusb_get_device_address(dev),
- interface_number);
- str[sizeof(str)-1] = '\0';
- return strdup(str);
- }
- int HID_API_EXPORT hid_init(void)
- {
- if (!initialized) {
- if (libusb_init(NULL))
- return -1;
- initialized = 1;
- }
- return 0;
- }
- int HID_API_EXPORT hid_exit(void)
- {
- if (initialized) {
- libusb_exit(NULL);
- initialized = 0;
- }
- return 0;
- }
- struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id, unsigned short product_id)
- {
- libusb_device **devs;
- libusb_device *dev;
- libusb_device_handle *handle;
- ssize_t num_devs;
- int i = 0;
- struct hid_device_info *root = NULL; // return object
- struct hid_device_info *cur_dev = NULL;
- setlocale(LC_ALL,"");
- if (!initialized)
- hid_init();
- num_devs = libusb_get_device_list(NULL, &devs);
- if (num_devs < 0)
- return NULL;
- while ((dev = devs[i++]) != NULL) {
- struct libusb_device_descriptor desc;
- struct libusb_config_descriptor *conf_desc = NULL;
- int j, k;
- int interface_num = 0;
- int res = libusb_get_device_descriptor(dev, &desc);
- unsigned short dev_vid = desc.idVendor;
- unsigned short dev_pid = desc.idProduct;
- /* HID's are defined at the interface level. */
- if (desc.bDeviceClass != LIBUSB_CLASS_PER_INTERFACE)
- continue;
- res = libusb_get_active_config_descriptor(dev, &conf_desc);
- if (res < 0)
- libusb_get_config_descriptor(dev, 0, &conf_desc);
- if (conf_desc) {
- for (j = 0; j < conf_desc->bNumInterfaces; j++) {
- const struct libusb_interface *intf = &conf_desc->interface[j];
- for (k = 0; k < intf->num_altsetting; k++) {
- const struct libusb_interface_descriptor *intf_desc;
- intf_desc = &intf->altsetting[k];
- if (intf_desc->bInterfaceClass == LIBUSB_CLASS_HID) {
- interface_num = intf_desc->bInterfaceNumber;
- /* Check the VID/PID against the arguments */
- if ((vendor_id == 0x0 && product_id == 0x0) ||
- (vendor_id == dev_vid && product_id == dev_pid)) {
- struct hid_device_info *tmp;
- /* VID/PID match. Create the record. */
- tmp = calloc(1, sizeof(struct hid_device_info));
- if (cur_dev) {
- cur_dev->next = tmp;
- }
- else {
- root = tmp;
- }
- cur_dev = tmp;
- /* Fill out the record */
- cur_dev->next = NULL;
- cur_dev->path = make_path(dev, interface_num);
- res = libusb_open(dev, &handle);
- if (res >= 0) {
- /* Serial Number */
- if (desc.iSerialNumber > 0)
- cur_dev->serial_number =
- get_usb_string(handle, desc.iSerialNumber);
- /* Manufacturer and Product strings */
- if (desc.iManufacturer > 0)
- cur_dev->manufacturer_string =
- get_usb_string(handle, desc.iManufacturer);
- if (desc.iProduct > 0)
- cur_dev->product_string =
- get_usb_string(handle, desc.iProduct);
- #ifdef INVASIVE_GET_USAGE
- /*
- This section is removed because it is too
- invasive on the system. Getting a Usage Page
- and Usage requires parsing the HID Report
- descriptor. Getting a HID Report descriptor
- involves claiming the interface. Claiming the
- interface involves detaching the kernel driver.
- Detaching the kernel driver is hard on the system
- because it will unclaim interfaces (if another
- app has them claimed) and the re-attachment of
- the driver will sometimes change /dev entry names.
- It is for these reasons that this section is
- #if 0. For composite devices, use the interface
- field in the hid_device_info struct to distinguish
- between interfaces. */
- int detached = 0;
- unsigned char data[256];
- /* Usage Page and Usage */
- res = libusb_kernel_driver_active(handle, interface_num);
- if (res == 1) {
- res = libusb_detach_kernel_driver(handle, interface_num);
- if (res < 0)
- LOG("Couldn't detach kernel driver, even though a kernel driver was attached.");
- else
- detached = 1;
- }
- res = libusb_claim_interface(handle, interface_num);
- if (res >= 0) {
- /* Get the HID Report Descriptor. */
- res = libusb_control_transfer(handle, LIBUSB_ENDPOINT_IN|LIBUSB_RECIPIENT_INTERFACE, LIBUSB_REQUEST_GET_DESCRIPTOR, (LIBUSB_DT_REPORT << 8)|interface_num, 0, data, sizeof(data), 5000);
- if (res >= 0) {
- unsigned short page=0, usage=0;
- /* Parse the usage and usage page
- out of the report descriptor. */
- get_usage(data, res, &page, &usage);
- cur_dev->usage_page = page;
- cur_dev->usage = usage;
- }
- else
- LOG("libusb_control_transfer() for getting the HID report failed with %d\n", res);
- /* Release the interface */
- res = libusb_release_interface(handle, interface_num);
- if (res < 0)
- LOG("Can't release the interface.\n");
- }
- else
- LOG("Can't claim interface %d\n", res);
- /* Re-attach kernel driver if necessary. */
- if (detached) {
- res = libusb_attach_kernel_driver(handle, interface_num);
- if (res < 0)
- LOG("Couldn't re-attach kernel driver.\n");
- }
- #endif /*******************/
- libusb_close(handle);
- }
- /* VID/PID */
- cur_dev->vendor_id = dev_vid;
- cur_dev->product_id = dev_pid;
- /* Release Number */
- cur_dev->release_number = desc.bcdDevice;
- /* Interface Number */
- cur_dev->interface_number = interface_num;
- }
- }
- } /* altsettings */
- } /* interfaces */
- libusb_free_config_descriptor(conf_desc);
- }
- }
- libusb_free_device_list(devs, 1);
- return root;
- }
- void HID_API_EXPORT hid_free_enumeration(struct hid_device_info *devs)
- {
- struct hid_device_info *d = devs;
- while (d) {
- struct hid_device_info *next = d->next;
- free(d->path);
- free(d->serial_number);
- free(d->manufacturer_string);
- free(d->product_string);
- free(d);
- d = next;
- }
- }
- hid_device * hid_open(unsigned short vendor_id, unsigned short product_id, wchar_t *serial_number)
- {
- struct hid_device_info *devs, *cur_dev;
- const char *path_to_open = NULL;
- hid_device *handle = NULL;
- devs = hid_enumerate(vendor_id, product_id);
- cur_dev = devs;
- while (cur_dev) {
- if (cur_dev->vendor_id == vendor_id &&
- cur_dev->product_id == product_id) {
- if (serial_number) {
- if (wcscmp(serial_number, cur_dev->serial_number) == 0) {
- path_to_open = cur_dev->path;
- break;
- }
- }
- else {
- path_to_open = cur_dev->path;
- break;
- }
- }
- cur_dev = cur_dev->next;
- }
- if (path_to_open) {
- /* Open the device */
- handle = hid_open_path(path_to_open);
- }
- hid_free_enumeration(devs);
- return handle;
- }
- static void read_callback(struct libusb_transfer *transfer)
- {
- hid_device *dev = transfer->user_data;
- if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
- struct input_report *rpt = malloc(sizeof(*rpt));
- rpt->data = malloc(transfer->actual_length);
- memcpy(rpt->data, transfer->buffer, transfer->actual_length);
- rpt->len = transfer->actual_length;
- rpt->next = NULL;
- pthread_mutex_lock(&dev->mutex);
- /* Attach the new report object to the end of the list. */
- if (dev->input_reports == NULL) {
- /* The list is empty. Put it at the root. */
- dev->input_reports = rpt;
- pthread_cond_signal(&dev->condition);
- }
- else {
- /* Find the end of the list and attach. */
- struct input_report *cur = dev->input_reports;
- int num_queued = 0;
- while (cur->next != NULL) {
- cur = cur->next;
- num_queued++;
- }
- cur->next = rpt;
- /* Pop one off if we've reached 30 in the queue. This
- way we don't grow forever if the user never reads
- anything from the device. */
- if (num_queued > 30) {
- return_data(dev, NULL, 0);
- }
- }
- pthread_mutex_unlock(&dev->mutex);
- }
- else if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
- dev->shutdown_thread = 1;
- return;
- }
- else if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
- dev->shutdown_thread = 1;
- return;
- }
- else if (transfer->status == LIBUSB_TRANSFER_TIMED_OUT) {
- //LOG("Timeout (normal)\n");
- }
- else {
- LOG("Unknown transfer code: %d\n", transfer->status);
- }
- /* Re-submit the transfer object. */
- libusb_submit_transfer(transfer);
- }
- static void *read_thread(void *param)
- {
- hid_device *dev = param;
- unsigned char *buf;
- const size_t length = dev->input_ep_max_packet_size;
- /* Set up the transfer object. */
- buf = malloc(length);
- dev->transfer = libusb_alloc_transfer(0);
- libusb_fill_interrupt_transfer(dev->transfer,
- dev->device_handle,
- dev->input_endpoint,
- buf,
- length,
- read_callback,
- dev,
- 5000/*timeout*/);
- /* Make the first submission. Further submissions are made
- from inside read_callback() */
- libusb_submit_transfer(dev->transfer);
- // Notify the main thread that the read thread is up and running.
- pthread_barrier_wait(&dev->barrier);
- /* Handle all the events. */
- while (!dev->shutdown_thread) {
- int res;
- res = libusb_handle_events(NULL);
- if (res < 0) {
- /* There was an error. Break out of this loop. */
- break;
- }
- }
- /* Cancel any transfer that may be pending. This call will fail
- if no transfers are pending, but that's OK. */
- if (libusb_cancel_transfer(dev->transfer) == 0) {
- /* The transfer was cancelled, so wait for its completion. */
- libusb_handle_events(NULL);
- }
- /* Now that the read thread is stopping, Wake any threads which are
- waiting on data (in hid_read_timeout()). Do this under a mutex to
- make sure that a thread which is about to go to sleep waiting on
- the condition acutally will go to sleep before the condition is
- signaled. */
- pthread_mutex_lock(&dev->mutex);
- pthread_cond_broadcast(&dev->condition);
- pthread_mutex_unlock(&dev->mutex);
- /* The dev->transfer->buffer and dev->transfer objects are cleaned up
- in hid_close(). They are not cleaned up here because this thread
- could end either due to a disconnect or due to a user
- call to hid_close(). In both cases the objects can be safely
- cleaned up after the call to pthread_join() (in hid_close()), but
- since hid_close() calls libusb_cancel_transfer(), on these objects,
- they can not be cleaned up here. */
- return NULL;
- }
- hid_device * HID_API_EXPORT hid_open_path(const char *path)
- {
- hid_device *dev = NULL;
- dev = new_hid_device();
- libusb_device **devs;
- libusb_device *usb_dev;
- ssize_t num_devs;
- int res;
- int d = 0;
- int good_open = 0;
- setlocale(LC_ALL,"");
- if (!initialized)
- hid_init();
- num_devs = libusb_get_device_list(NULL, &devs);
- while ((usb_dev = devs[d++]) != NULL) {
- struct libusb_device_descriptor desc;
- struct libusb_config_descriptor *conf_desc = NULL;
- int i,j,k;
- libusb_get_device_descriptor(usb_dev, &desc);
- if (libusb_get_active_config_descriptor(usb_dev, &conf_desc) < 0)
- continue;
- for (j = 0; j < conf_desc->bNumInterfaces; j++) {
- const struct libusb_interface *intf = &conf_desc->interface[j];
- for (k = 0; k < intf->num_altsetting; k++) {
- const struct libusb_interface_descriptor *intf_desc;
- intf_desc = &intf->altsetting[k];
- if (intf_desc->bInterfaceClass == LIBUSB_CLASS_HID) {
- char *dev_path = make_path(usb_dev, intf_desc->bInterfaceNumber);
- if (!strcmp(dev_path, path)) {
- /* Matched Paths. Open this device */
- // OPEN HERE //
- res = libusb_open(usb_dev, &dev->device_handle);
- if (res < 0) {
- LOG("can't open device\n");
- free(dev_path);
- break;
- }
- good_open = 1;
- /* Detach the kernel driver, but only if the
- device is managed by the kernel */
- if (libusb_kernel_driver_active(dev->device_handle, intf_desc->bInterfaceNumber) == 1) {
- res = libusb_detach_kernel_driver(dev->device_handle, intf_desc->bInterfaceNumber);
- if (res < 0) {
- libusb_close(dev->device_handle);
- LOG("Unable to detach Kernel Driver\n");
- free(dev_path);
- good_open = 0;
- break;
- }
- }
- res = libusb_claim_interface(dev->device_handle, intf_desc->bInterfaceNumber);
- if (res < 0) {
- LOG("can't claim interface %d: %d\n", intf_desc->bInterfaceNumber, res);
- free(dev_path);
- libusb_close(dev->device_handle);
- good_open = 0;
- break;
- }
- /* Store off the string descriptor indexes */
- dev->manufacturer_index = desc.iManufacturer;
- dev->product_index = desc.iProduct;
- dev->serial_index = desc.iSerialNumber;
- /* Store off the interface number */
- dev->interface = intf_desc->bInterfaceNumber;
- /* Find the INPUT and OUTPUT endpoints. An
- OUTPUT endpoint is not required. */
- for (i = 0; i < intf_desc->bNumEndpoints; i++) {
- const struct libusb_endpoint_descriptor *ep
- = &intf_desc->endpoint[i];
- /* Determine the type and direction of this
- endpoint. */
- int is_interrupt =
- (ep->bmAttributes & LIBUSB_TRANSFER_TYPE_MASK)
- == LIBUSB_TRANSFER_TYPE_INTERRUPT;
- int is_output =
- (ep->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK)
- == LIBUSB_ENDPOINT_OUT;
- int is_input =
- (ep->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK)
- == LIBUSB_ENDPOINT_IN;
- /* Decide whether to use it for intput or output. */
- if (dev->input_endpoint == 0 &&
- is_interrupt && is_input) {
- /* Use this endpoint for INPUT */
- dev->input_endpoint = ep->bEndpointAddress;
- dev->input_ep_max_packet_size = ep->wMaxPacketSize;
- }
- if (dev->output_endpoint == 0 &&
- is_interrupt && is_output) {
- /* Use this endpoint for OUTPUT */
- dev->output_endpoint = ep->bEndpointAddress;
- }
- }
- pthread_create(&dev->thread, NULL, read_thread, dev);
- // Wait here for the read thread to be initialized.
- pthread_barrier_wait(&dev->barrier);
- }
- free(dev_path);
- }
- }
- }
- libusb_free_config_descriptor(conf_desc);
- }
- libusb_free_device_list(devs, 1);
- // If we have a good handle, return it.
- if (good_open) {
- return dev;
- }
- else {
- // Unable to open any devices.
- free_hid_device(dev);
- return NULL;
- }
- }
- int HID_API_EXPORT hid_write(hid_device *dev, const unsigned char *data, size_t length)
- {
- int res;
- int report_number = data[0];
- int skipped_report_id = 0;
- if (report_number == 0x0) {
- data++;
- length--;
- skipped_report_id = 1;
- }
- if (dev->output_endpoint <= 0) {
- /* No interrput out endpoint. Use the Control Endpoint */
- res = libusb_control_transfer(dev->device_handle,
- LIBUSB_REQUEST_TYPE_CLASS|LIBUSB_RECIPIENT_INTERFACE|LIBUSB_ENDPOINT_OUT,
- 0x09/*HID Set_Report*/,
- (2/*HID output*/ << 8) | report_number,
- dev->interface,
- (unsigned char *)data, length,
- 1000/*timeout millis*/);
- if (res < 0)
- return -1;
- if (skipped_report_id)
- length++;
- return length;
- }
- else {
- /* Use the interrupt out endpoint */
- int actual_length;
- res = libusb_interrupt_transfer(dev->device_handle,
- dev->output_endpoint,
- (unsigned char*)data,
- length,
- &actual_length, 1000);
- if (res < 0)
- return -1;
- if (skipped_report_id)
- actual_length++;
- return actual_length;
- }
- }
- /* Helper function, to simplify hid_read().
- This should be called with dev->mutex locked. */
- static int return_data(hid_device *dev, unsigned char *data, size_t length)
- {
- /* Copy the data out of the linked list item (rpt) into the
- return buffer (data), and delete the liked list item. */
- struct input_report *rpt = dev->input_reports;
- size_t len = (length < rpt->len)? length: rpt->len;
- if (len > 0)
- memcpy(data, rpt->data, len);
- dev->input_reports = rpt->next;
- free(rpt->data);
- free(rpt);
- return len;
- }
- static void cleanup_mutex(void *param)
- {
- hid_device *dev = param;
- pthread_mutex_unlock(&dev->mutex);
- }
- int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds)
- {
- int bytes_read = -1;
- #if 0
- int transferred;
- int res = libusb_interrupt_transfer(dev->device_handle, dev->input_endpoint, data, length, &transferred, 5000);
- LOG("transferred: %d\n", transferred);
- return transferred;
- #endif
- pthread_mutex_lock(&dev->mutex);
- pthread_cleanup_push(&cleanup_mutex, dev);
- /* There's an input report queued up. Return it. */
- if (dev->input_reports) {
- /* Return the first one */
- bytes_read = return_data(dev, data, length);
- goto ret;
- }
- if (dev->shutdown_thread) {
- /* This means the device has been disconnected.
- An error code of -1 should be returned. */
- bytes_read = -1;
- goto ret;
- }
- if (milliseconds == -1) {
- /* Blocking */
- while (!dev->input_reports && !dev->shutdown_thread) {
- pthread_cond_wait(&dev->condition, &dev->mutex);
- }
- if (dev->input_reports) {
- bytes_read = return_data(dev, data, length);
- }
- }
- else if (milliseconds > 0) {
- /* Non-blocking, but called with timeout. */
- int res;
- struct timespec ts;
- clock_gettime(CLOCK_REALTIME, &ts);
- ts.tv_sec += milliseconds / 1000;
- ts.tv_nsec += (milliseconds % 1000) * 1000000;
- if (ts.tv_nsec >= 1000000000L) {
- ts.tv_sec++;
- ts.tv_nsec -= 1000000000L;
- }
- while (!dev->input_reports && !dev->shutdown_thread) {
- res = pthread_cond_timedwait(&dev->condition, &dev->mutex, &ts);
- if (res == 0) {
- if (dev->input_reports) {
- bytes_read = return_data(dev, data, length);
- break;
- }
- /* If we're here, there was a spurious wake up
- or the read thread was shutdown. Run the
- loop again (ie: don't break). */
- }
- else if (res == ETIMEDOUT) {
- /* Timed out. */
- bytes_read = 0;
- break;
- }
- else {
- /* Error. */
- bytes_read = -1;
- break;
- }
- }
- }
- else {
- /* Purely non-blocking */
- bytes_read = 0;
- }
- ret:
- pthread_mutex_unlock(&dev->mutex);
- pthread_cleanup_pop(0);
- return bytes_read;
- }
- int HID_API_EXPORT hid_read(hid_device *dev, unsigned char *data, size_t length)
- {
- return hid_read_timeout(dev, data, length, dev->blocking ? -1 : 0);
- }
- int HID_API_EXPORT hid_set_nonblocking(hid_device *dev, int nonblock)
- {
- dev->blocking = !nonblock;
- return 0;
- }
- int HID_API_EXPORT hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length)
- {
- int res = -1;
- int skipped_report_id = 0;
- int report_number = data[0];
- if (report_number == 0x0) {
- data++;
- length--;
- skipped_report_id = 1;
- }
- res = libusb_control_transfer(dev->device_handle,
- LIBUSB_REQUEST_TYPE_CLASS|LIBUSB_RECIPIENT_INTERFACE|LIBUSB_ENDPOINT_OUT,
- 0x09/*HID set_report*/,
- (3/*HID feature*/ << 8) | report_number,
- dev->interface,
- (unsigned char *)data, length,
- 1000/*timeout millis*/);
- if (res < 0)
- return -1;
- /* Account for the report ID */
- if (skipped_report_id)
- length++;
- return length;
- }
- int HID_API_EXPORT hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length)
- {
- int res = -1;
- int skipped_report_id = 0;
- int report_number = data[0];
- if (report_number == 0x0) {
- /* Offset the return buffer by 1, so that the report ID
- will remain in byte 0. */
- data++;
- length--;
- skipped_report_id = 1;
- }
- res = libusb_control_transfer(dev->device_handle,
- LIBUSB_REQUEST_TYPE_CLASS|LIBUSB_RECIPIENT_INTERFACE|LIBUSB_ENDPOINT_IN,
- 0x01/*HID get_report*/,
- (3/*HID feature*/ << 8) | report_number,
- dev->interface,
- (unsigned char *)data, length,
- 1000/*timeout millis*/);
- if (res < 0)
- return -1;
- if (skipped_report_id)
- res++;
- return res;
- }
- void HID_API_EXPORT hid_close(hid_device *dev)
- {
- if (!dev)
- return;
- /* Cause read_thread() to stop. */
- dev->shutdown_thread = 1;
- libusb_cancel_transfer(dev->transfer);
- /* Wait for read_thread() to end. */
- pthread_join(dev->thread, NULL);
- /* Clean up the Transfer objects allocated in read_thread(). */
- free(dev->transfer->buffer);
- libusb_free_transfer(dev->transfer);
- /* release the interface */
- libusb_release_interface(dev->device_handle, dev->interface);
- /* Close the handle */
- libusb_close(dev->device_handle);
- /* Clear out the queue of received reports. */
- pthread_mutex_lock(&dev->mutex);
- while (dev->input_reports) {
- return_data(dev, NULL, 0);
- }
- pthread_mutex_unlock(&dev->mutex);
- free_hid_device(dev);
- }
- int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen)
- {
- return hid_get_indexed_string(dev, dev->manufacturer_index, string, maxlen);
- }
- int HID_API_EXPORT_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen)
- {
- return hid_get_indexed_string(dev, dev->product_index, string, maxlen);
- }
- int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen)
- {
- return hid_get_indexed_string(dev, dev->serial_index, string, maxlen);
- }
- int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen)
- {
- wchar_t *str;
- str = get_usb_string(dev->device_handle, string_index);
- if (str) {
- wcsncpy(string, str, maxlen);
- string[maxlen-1] = L'\0';
- free(str);
- return 0;
- }
- else
- return -1;
- }
- HID_API_EXPORT const wchar_t * HID_API_CALL hid_error(hid_device *dev)
- {
- return NULL;
- }
- struct lang_map_entry {
- const char *name;
- const char *string_code;
- uint16_t usb_code;
- };
- #define LANG(name,code,usb_code) { name, code, usb_code }
- static struct lang_map_entry lang_map[] = {
- LANG("Afrikaans", "af", 0x0436),
- LANG("Albanian", "sq", 0x041C),
- LANG("Arabic - United Arab Emirates", "ar_ae", 0x3801),
- LANG("Arabic - Bahrain", "ar_bh", 0x3C01),
- LANG("Arabic - Algeria", "ar_dz", 0x1401),
- LANG("Arabic - Egypt", "ar_eg", 0x0C01),
- LANG("Arabic - Iraq", "ar_iq", 0x0801),
- LANG("Arabic - Jordan", "ar_jo", 0x2C01),
- LANG("Arabic - Kuwait", "ar_kw", 0x3401),
- LANG("Arabic - Lebanon", "ar_lb", 0x3001),
- LANG("Arabic - Libya", "ar_ly", 0x1001),
- LANG("Arabic - Morocco", "ar_ma", 0x1801),
- LANG("Arabic - Oman", "ar_om", 0x2001),
- LANG("Arabic - Qatar", "ar_qa", 0x4001),
- LANG("Arabic - Saudi Arabia", "ar_sa", 0x0401),
- LANG("Arabic - Syria", "ar_sy", 0x2801),
- LANG("Arabic - Tunisia", "ar_tn", 0x1C01),
- LANG("Arabic - Yemen", "ar_ye", 0x2401),
- LANG("Armenian", "hy", 0x042B),
- LANG("Azeri - Latin", "az_az", 0x042C),
- LANG("Azeri - Cyrillic", "az_az", 0x082C),
- LANG("Basque", "eu", 0x042D),
- LANG("Belarusian", "be", 0x0423),
- LANG("Bulgarian", "bg", 0x0402),
- LANG("Catalan", "ca", 0x0403),
- LANG("Chinese - China", "zh_cn", 0x0804),
- LANG("Chinese - Hong Kong SAR", "zh_hk", 0x0C04),
- LANG("Chinese - Macau SAR", "zh_mo", 0x1404),
- LANG("Chinese - Singapore", "zh_sg", 0x1004),
- LANG("Chinese - Taiwan", "zh_tw", 0x0404),
- LANG("Croatian", "hr", 0x041A),
- LANG("Czech", "cs", 0x0405),
- LANG("Danish", "da", 0x0406),
- LANG("Dutch - Netherlands", "nl_nl", 0x0413),
- LANG("Dutch - Belgium", "nl_be", 0x0813),
- LANG("English - Australia", "en_au", 0x0C09),
- LANG("English - Belize", "en_bz", 0x2809),
- LANG("English - Canada", "en_ca", 0x1009),
- LANG("English - Caribbean", "en_cb", 0x2409),
- LANG("English - Ireland", "en_ie", 0x1809),
- LANG("English - Jamaica", "en_jm", 0x2009),
- LANG("English - New Zealand", "en_nz", 0x1409),
- LANG("English - Phillippines", "en_ph", 0x3409),
- LANG("English - Southern Africa", "en_za", 0x1C09),
- LANG("English - Trinidad", "en_tt", 0x2C09),
- LANG("English - Great Britain", "en_gb", 0x0809),
- LANG("English - United States", "en_us", 0x0409),
- LANG("Estonian", "et", 0x0425),
- LANG("Farsi", "fa", 0x0429),
- LANG("Finnish", "fi", 0x040B),
- LANG("Faroese", "fo", 0x0438),
- LANG("French - France", "fr_fr", 0x040C),
- LANG("French - Belgium", "fr_be", 0x080C),
- LANG("French - Canada", "fr_ca", 0x0C0C),
- LANG("French - Luxembourg", "fr_lu", 0x140C),
- LANG("French - Switzerland", "fr_ch", 0x100C),
- LANG("Gaelic - Ireland", "gd_ie", 0x083C),
- LANG("Gaelic - Scotland", "gd", 0x043C),
- LANG("German - Germany", "de_de", 0x0407),
- LANG("German - Austria", "de_at", 0x0C07),
- LANG("German - Liechtenstein", "de_li", 0x1407),
- LANG("German - Luxembourg", "de_lu", 0x1007),
- LANG("German - Switzerland", "de_ch", 0x0807),
- LANG("Greek", "el", 0x0408),
- LANG("Hebrew", "he", 0x040D),
- LANG("Hindi", "hi", 0x0439),
- LANG("Hungarian", "hu", 0x040E),
- LANG("Icelandic", "is", 0x040F),
- LANG("Indonesian", "id", 0x0421),
- LANG("Italian - Italy", "it_it", 0x0410),
- LANG("Italian - Switzerland", "it_ch", 0x0810),
- LANG("Japanese", "ja", 0x0411),
- LANG("Korean", "ko", 0x0412),
- LANG("Latvian", "lv", 0x0426),
- LANG("Lithuanian", "lt", 0x0427),
- LANG("F.Y.R.O. Macedonia", "mk", 0x042F),
- LANG("Malay - Malaysia", "ms_my", 0x043E),
- LANG("Malay – Brunei", "ms_bn", 0x083E),
- LANG("Maltese", "mt", 0x043A),
- LANG("Marathi", "mr", 0x044E),
- LANG("Norwegian - Bokml", "no_no", 0x0414),
- LANG("Norwegian - Nynorsk", "no_no", 0x0814),
- LANG("Polish", "pl", 0x0415),
- LANG("Portuguese - Portugal", "pt_pt", 0x0816),
- LANG("Portuguese - Brazil", "pt_br", 0x0416),
- LANG("Raeto-Romance", "rm", 0x0417),
- LANG("Romanian - Romania", "ro", 0x0418),
- LANG("Romanian - Republic of Moldova", "ro_mo", 0x0818),
- LANG("Russian", "ru", 0x0419),
- LANG("Russian - Republic of Moldova", "ru_mo", 0x0819),
- LANG("Sanskrit", "sa", 0x044F),
- LANG("Serbian - Cyrillic", "sr_sp", 0x0C1A),
- LANG("Serbian - Latin", "sr_sp", 0x081A),
- LANG("Setsuana", "tn", 0x0432),
- LANG("Slovenian", "sl", 0x0424),
- LANG("Slovak", "sk", 0x041B),
- LANG("Sorbian", "sb", 0x042E),
- LANG("Spanish - Spain (Traditional)", "es_es", 0x040A),
- LANG("Spanish - Argentina", "es_ar", 0x2C0A),
- LANG("Spanish - Bolivia", "es_bo", 0x400A),
- LANG("Spanish - Chile", "es_cl", 0x340A),
- LANG("Spanish - Colombia", "es_co", 0x240A),
- LANG("Spanish - Costa Rica", "es_cr", 0x140A),
- LANG("Spanish - Dominican Republic", "es_do", 0x1C0A),
- LANG("Spanish - Ecuador", "es_ec", 0x300A),
- LANG("Spanish - Guatemala", "es_gt", 0x100A),
- LANG("Spanish - Honduras", "es_hn", 0x480A),
- LANG("Spanish - Mexico", "es_mx", 0x080A),
- LANG("Spanish - Nicaragua", "es_ni", 0x4C0A),
- LANG("Spanish - Panama", "es_pa", 0x180A),
- LANG("Spanish - Peru", "es_pe", 0x280A),
- LANG("Spanish - Puerto Rico", "es_pr", 0x500A),
- LANG("Spanish - Paraguay", "es_py", 0x3C0A),
- LANG("Spanish - El Salvador", "es_sv", 0x440A),
- LANG("Spanish - Uruguay", "es_uy", 0x380A),
- LANG("Spanish - Venezuela", "es_ve", 0x200A),
- LANG("Southern Sotho", "st", 0x0430),
- LANG("Swahili", "sw", 0x0441),
- LANG("Swedish - Sweden", "sv_se", 0x041D),
- LANG("Swedish - Finland", "sv_fi", 0x081D),
- LANG("Tamil", "ta", 0x0449),
- LANG("Tatar", "tt", 0X0444),
- LANG("Thai", "th", 0x041E),
- LANG("Turkish", "tr", 0x041F),
- LANG("Tsonga", "ts", 0x0431),
- LANG("Ukrainian", "uk", 0x0422),
- LANG("Urdu", "ur", 0x0420),
- LANG("Uzbek - Cyrillic", "uz_uz", 0x0843),
- LANG("Uzbek – Latin", "uz_uz", 0x0443),
- LANG("Vietnamese", "vi", 0x042A),
- LANG("Xhosa", "xh", 0x0434),
- LANG("Yiddish", "yi", 0x043D),
- LANG("Zulu", "zu", 0x0435),
- LANG(NULL, NULL, 0x0),
- };
- uint16_t get_usb_code_for_current_locale(void)
- {
- char *locale;
- char search_string[64];
- char *ptr;
- /* Get the current locale. */
- locale = setlocale(0, NULL);
- if (!locale)
- return 0x0;
- /* Make a copy of the current locale string. */
- strncpy(search_string, locale, sizeof(search_string));
- search_string[sizeof(search_string)-1] = '\0';
- /* Chop off the encoding part, and make it lower case. */
- ptr = search_string;
- while (*ptr) {
- *ptr = tolower(*ptr);
- if (*ptr == '.') {
- *ptr = '\0';
- break;
- }
- ptr++;
- }
- /* Find the entry which matches the string code of our locale. */
- struct lang_map_entry *lang = lang_map;
- while (lang->string_code) {
- if (!strcmp(lang->string_code, search_string)) {
- return lang->usb_code;
- }
- lang++;
- }
- /* There was no match. Find with just the language only. */
- /* Chop off the variant. Chop it off at the '_'. */
- ptr = search_string;
- while (*ptr) {
- *ptr = tolower(*ptr);
- if (*ptr == '_') {
- *ptr = '\0';
- break;
- }
- ptr++;
- }
- #if 0 // TODO: Do we need this?
- /* Find the entry which matches the string code of our language. */
- lang = lang_map;
- while (lang->string_code) {
- if (!strcmp(lang->string_code, search_string)) {
- return lang->usb_code;
- }
- lang++;
- }
- #endif
- /* Found nothing. */
- return 0x0;
- }
- #ifdef __cplusplus
- }
- #endif
d) hidinterface.h
[cpp] view plain copy
- #ifndef DeltaHIDINTERFACE_H
- #define DeltaHIDINTERFACE_H
- #include <stdio.h>
- #include <wchar.h>
- #include <string.h>
- #include <stdlib.h>
- #include "hidapi.h"
- // Headers needed for sleeping.
- #include <unistd.h>
- #define hidDataLength 64
- //hid data receive callback function
- typedef void (*DataArriveCallBackFunc)(unsigned char *recData,unsigned char length);
- DataArriveCallBackFunc hidDataArriveCallBack;
- hid_device *handle;
- unsigned char isOpen;
- int hidApi_Init(DataArriveCallBackFunc DataArriveCallBack);
- int hidApi_Write(unsigned char *data, unsigned char length);
- //when data arrived, the function will be called
- void hidApi_DataReceive(unsigned char *recData,unsigned char length);
- int hidApi_Close(void);
- #endif // HIDINTERFACE_H
e) hidinterface.c
[cpp] view plain copy
- /*******************************************************
- Windows HID simplification
- Alan Ott
- Signal 11 Software
- 8/22/2009
- Copyright 2009, All Rights Reserved.
- This contents of this file may be used by anyone
- for any reason without any conditions and may be
- used as a starting point for your own applications
- which use HIDAPI.
- ********************************************************/
- #include "hidinterface.h"
- #include <pthread.h>
- void hidRead_thread(void);
- int hidApi_Init(DataArriveCallBackFunc DataArriveCallBack)
- {
- hidDataArriveCallBack = NULL;
- // Open the device using the VID, PID,
- // and optionally the Serial number.
- ////handle = hid_open(0x4d8, 0x3f, L"12345");
- handle = hid_open(0x4d8, 0x3f, NULL);
- if (!handle) {
- printf("unable to open device\n");
- isOpen = 0;
- return -1;
- }
- printf("open device success\n");
- isOpen = 1;
- hidDataArriveCallBack = DataArriveCallBack;
- hidRead_thread();
- // Set the hid_read() function to be non-blocking.
- hid_set_nonblocking(handle, 1);
- return 0;
- }
- int hidApi_Write(unsigned char *data, unsigned char length)
- {
- int res;
- unsigned char realData[length+1];
- realData[0]=length;
- int i;
- for(i=0;i<length;i++)
- {
- realData[i+1]=data[i];
- }
- res = hid_write(handle, realData, length+1);
- if (res < 0) {
- printf("Unable to write()\n");
- printf("Error: %ls\n", hid_error(handle));
- return -1;
- }
- printf("write success\n");
- return 0;
- }
- void hidApi_DataReceive(unsigned char *recData,unsigned char length)
- {
- if(hidDataArriveCallBack==NULL)
- return;
- hidDataArriveCallBack(recData,length);
- }
- void hidApi_Read()
- {
- unsigned char recData[hidDataLength];
- int res;
- while (isOpen==1) {
- res = hid_read(handle, recData, hidDataLength);
- if (res == 0)
- ;//printf("waiting...\n");
- else if (res < 0)
- {
- printf("Unable to read()\n");
- return -1;
- }
- else
- {
- int i;
- // printf("Data read:\n ");
- // // Print out the returned buffer.
- //
- // for (i = 0; i < res; i++)
- // printf("%02hhx ", recData[i]);
- // printf("\n");
- unsigned char length = recData[0];
- unsigned char datas[length];
- for(i=0;i<length;i++)
- {
- datas[i]=recData[i+1];
- }
- hidApi_DataReceive(datas,length);
- }
- usleep(50*1000);
- }
- }
- void hidRead_thread(void)
- {
- pthread_t id;
- int ret, i;
- ret=pthread_create(&id,NULL,(void *) hidApi_Read,NULL); // 成功返回0,错误返回错误编号
- if(ret!=0) {
- printf ("Create pthread error!\n");
- exit (1);
- }
- //pthread_join(id,NULL);
- printf ("Create pthread success!\n");
- }
- int hidApi_Close(void)
- {
- hid_close(handle);
- isOpen = 0;
- /* Free static HIDAPI objects. */
- hid_exit();
- return 0;
- }
f) main.c
[cpp] view plain copy
- #include <hidlib/hidinterface.h>
- // down 50000 50 : FA 00 00 04 03 01 00 00 00 50 C3 00 00 32 00 00 00 A7 A5
- unsigned char bufferDown50[] = {0xFA, 0x00, 0x00, 0x04, 0x03, 0x01, 0x00, 0x00, 0x00, 0x50, 0xC3, 0x00, 0x00, 0x32, 0x00, 0x00, 0x00, 0xA7, 0xA5};
- // down 50000 10 : FA 00 00 04 03 01 00 00 00 50 C3 00 00 0A 00 00 00 9F A5
- unsigned char bufferDown10[] = {0xFA, 0x00, 0x00, 0x04, 0x03, 0x01, 0x00, 0x00, 0x00, 0x50, 0xC3, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x00, 0x9F, 0xA5};
- // up 50000 50 : FA 00 00 04 03 00 00 00 00 50 C3 00 00 32 00 00 00 A6 A5
- unsigned char bufferUp50[] = {0xFA, 0x00, 0x00, 0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x50, 0xC3, 0x00, 0x00, 0x32, 0x00, 0x00, 0x00, 0xA6, 0xA5};
- // up 50000 10 : FA 00 00 04 03 00 00 00 00 50 C3 00 00 0A 00 00 00 9E A5
- unsigned char bufferUp10[] = {0xFA, 0x00, 0x00, 0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x50, 0xC3, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x00, 0x9E, 0xA5};
- // go home FA 00 02 04 03 00 00 00 00 00 00 00 00 0A 00 00 00 0D A5
- unsigned char bufferGoHome[] = { 0xFA, 0x00, 0x02, 0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0xA5};
- char isReponse = 0;
- void datarec(unsigned char *recData,unsigned char length)
- {
- printf("Data Receive: ");
- int i;
- for(i=0;i<length;i++)
- {
- printf("%02hhx ", recData[i]);
- }
- printf("\n");
- isReponse = 1;
- }
- int main(int argc, char* argv[])
- {
- hidApi_Init(datarec);
- isReponse = 1;
- while(1)
- {
- while(isReponse==0) usleep(500*1000);
- isReponse =0;
- hidApi_Write(bufferGoHome,0x13);
- usleep(500*1000);
- while(isReponse==0) usleep(500*1000);
- isReponse =0;
- hidApi_Write(bufferDown10,0x13);
- usleep(500*1000);
- while(isReponse==0) usleep(500*1000);
- isReponse =0;
- hidApi_Write(bufferDown50,0x13);
- while(isReponse==0) usleep(500*1000);
- isReponse =0;
- hidApi_Write(bufferDown10,0x13);
- usleep(500*1000);
- usleep(2*1000*1000);
- while(isReponse==0) usleep(500*1000);
- isReponse =0;
- hidApi_Write(bufferGoHome,0x13);
- usleep(2*1000*1000);
- }
- hidApi_Close();
- return 0;
- }
from: http://blog.csdn.net/u010875635/article/details/73277779
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