Question

我试图在Windows下为Flyfish FF32 USB-HID IO板（http://www.flyfish-tech.com/FF32/index.php）创建python库。我正在使用pywinusb库，Python 2.7，Windows 7。

设备本身可以使用flyfish GUI提供。在运行＆＃34; show_hids＆＃34;来自pywinusb设备的演示是可见的：

HID device (vID=0x04d8, pID=0xf8b9, v=0x0032); FLYFISH TECHNOLOGIES; FF32, Path: \\?\hid#vid_04d8&pid_f8b9#a&135de629&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}

  Path:      \\?\hid#vid_04d8&pid_f8b9#a&135de629&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}

  Instance:  HID\VID_04D8&PID_F8B9\A&135DE629&1&0000

  Port (ID): 2460

  Port (str):USB\VID_04D8&PID_F8B9\9&815F95E&0&3

HID device documentation report
===============================

Top Level Details
-----------------

Manufacturer String:    FLYFISH TECHNOLOGIES
Product Sting:          FF32
Serial Number:          ?

Vendor ID:              0x04d8
Product ID:             0xf8b9
Version number:         0x0032

Device Path:            \\?\hid#vid_04d8&pid_f8b9#a&135de629&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
Device Instance Id:     HID\VID_04D8&PID_F8B9\A&135DE629&1&0000
Parent Instance Id:     2460

Top level usage:        Page=0xff00, Usage=0x01
Usage identification:   Unknown Page/usage
Link collections:       1 collection(s)

Reports
-------

Input Report
~~~~~~~~~~~~
Length:     65 byte(s)
Buttons:    1 button(s)
Values:     0 value(s)

Output Report
~~~~~~~~~~~~~
length:     65 byte(s)
Buttons:    1 button(s)
Values:     0 value(s)

Feature Report
~~~~~~~~~~~~~
Length:     0 byte(s)
Buttons:    0 button(s)
Values:     0 value(s)

*** Input Caps ***

    Usage Range 1~64 (0x1~0x40), Page 0xff00 (Vendor-defined)
        bit_field: 0
        data_index_max: 63
        data_index_min: 0
        designator_max: 0
        designator_min: 0
        is_absolute: 1
        is_alias: 0
        is_button: True
        is_designator_range: 0
        is_range: 1
        is_string_range: 0
        is_value: False
        link_collection: 0
        link_usage: 1 (0x1)
        link_usage_page: 65280 (0xff00)
        report_id: 0
        string_max: 0
        string_min: 0

*** Output Caps ***

    Usage Range 1~64 (0x1~0x40), Page 0xff00 (Vendor-defined)
        bit_field: 0
        data_index_max: 63
        data_index_min: 0
        designator_max: 0
        designator_min: 0
        is_absolute: 1
        is_alias: 0
        is_button: True
        is_designator_range: 0
        is_range: 1
        is_string_range: 0
        is_value: False
        link_collection: 0
        link_usage: 1 (0x1)
        link_usage_page: 65280 (0xff00)
        report_id: 0
        string_max: 0
        string_min: 0

但是在运行以下时，修改了演示：

import pywinusb.hid as hid
from time import sleep


def sample_handler(data):
    print("Raw data: {0}".format(data))

filter = hid.HidDeviceFilter(vendor_id = 0x04d8, product_id = 0xf8b9)

hid_device = filter.get_devices()
device = hid_device[0]
device.open()
target_usage = hid.get_full_usage_id(0xff00, 1)
device.set_raw_data_handler(sample_handler)

report = device.find_output_reports()
print(report[0])

buffer = [0x00]*65
buffer[0] = 0
buffer[1] = 0x13


report[0].set_raw_data(buffer)
report[0].send()
sleep(1)

device.close()

执行输出： HID报告对象（输出报告

t, id=0x00), 63 items included
Raw data: [0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]

我没有获得预期的供应商信息。我安装了USB嗅探软件，结果发现无论我放入缓冲区，FF32总是得到0的数组。

供参考。从GUI嗅探包：

80 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 18 f1 6d 0b 80 fa ff ff
02 00 00 00 40 00 00 00 75 9f b6 0b 80 f8 ff ff
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
*13* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

我的剧本中有一个：

80 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 18 f1 6d 0b 80 fa ff ff
02 00 00 00 40 00 00 00 41 57 87 05 80 f8 ff ff
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

有谁知道这里有什么问题？

Answer 1

这个设备很奇怪，报告不会有65个字节，因为这通常受端点大小的限制。

无论如何，intersection预计将被用作＆＃34;一次性的模板＆＃34; HID使用设置，因此它将验证您提供有效的报告ID和可解析信息（解析由Windows API完成）。

在您的情况下，如果您想发送＆＃34;任何＆＃34;只要报告ID列在HID描述符（第一个字节）中，就可以使用：

到您的设备

set_raw_data()

在这两种情况下，您都绕过了报表解析逻辑，这些是最有效的数据发送方式，可以对您发送的内容进行较少的验证。

Windows下的Pywinusb和Flyfish FF32设备。 Pywinusb只发送零？

1 个答案: