超微服务器740GP-TNRT(主板为X12DPG-QT6)在重启后,卡在开机界面"DXE -- USB Initialization"无法进入系统,右下角显示代码"68",同时无法进入BIOS,故几乎无法进行任何操作。 出现这种问题的具体原因不明,仅在超微官网"技术支持-网上支持-搜索FAQ(usb initialization)"中找到两个相关的cases(FAQ ID: 36147 & 36010...
voidVirtual_Com_Port_Reset(void) {/*Set Virtual_Com_Port DEVICE as not configured 还没被配置*/pInformation->Current_Configuration =0;//当前配置为0/*Current Feature initialization*/pInformation->Current_Feature = Virtual_Com_Port_ConfigDescriptor[7];//需要总线供电/*Set Virtual_Com_Port DEVICE ...
主机发出标准 USB 请求以获取设备的一组标准 USB 描述符。 下面提供了这些描述符的相关部分。 请参阅通用 USB 设备初始化的 USB 规范。反馈 此页面是否有帮助? 是 否 提供产品反馈 | 在Microsoft Q&A 获取帮助 其他资源 培训 模块 Explore physical hardware troubleshooting - Training This module provides an...
前阵子调试平台的mass-storage function, 想借机把USB Initialization过程了解清楚. 以前的理解都是基于代码的, PC机那边会怎么响应完全是黑盒, 不可见的. 而在初始化过程中不能加入break point, 否则请求超时后, 即使单步调试最后把请求的数据发回, 也被主机认为初始化失败. 因此只能在endpoint的XmitData和ReceiveDa...
The host issues standard USB requests to obtain a set of standard USB descriptors for the device. The relevant portions of those descriptors are given below. See the USB Specification for generic USB device initialization.See AlsoUSB Host Controller Driver Development Concepts | RNDIS To USB ...
你开机后按f8 看看能不能进入安全模式,如果能进去的话,建议看看驱动安装是否正确,可以下个驱动精灵检测一下,然后把要装的装上。如果再不行的话,只能重做系统了。
ESP_LOGI(TAG, "USB initialization"); const tinyusb_config_t tusb_cfg = { .device_descriptor = NULL, .string_descriptor = NULL, .external_phy = false, .configuration_descriptor = NULL, }; // 初始化TinyUSB驱动 ESP_ERROR_CHECK(tinyusb_driver_install(&tusb_cfg)); ...
其实低功耗时link已经断路了,从低功耗回到正常状态需要重新training和initialization,但是都重来必然有等待时间,所以在浅睡的情况下,恢复链路可以发送快速训练ordered-set来代替,这就是FTS。 symbol4 rate ID,上面提到的速率协商,代表链路希望支持多块的速率。 symbol5 training control,控制位,表明这个TS1orTS2到底是...
The last step is to disable the USB Initialization in theAdvanced Settingsmenu. Doing that, we are all set to generate the code and start coding our application. Once the code is generated, we have the following structure: The first steps in the code development are to link ...
Find that USB initialization eventually triggers a configASSERT(pxUnblockedTCB) in source tasks.c function xTaskRemoveFromEventList. Observe the following sequence: USBH_Process is called for switch case HOST_IDLE USBH_Process is called for switch case HOST_DEV_WAIT_FOR_ATTACHMENT USBH_Process is...