1e41f4b71Sopenharmony_ci# UsbControlRequestSetup 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci控制传输setup包，对应USB协议中的Setup Data。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**起始版本：** 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci10 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**相关模块:** 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci[USB DDK](_usb_ddk.md) 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci## 汇总 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci### 成员变量 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci| 名称 | 描述 | 23e41f4b71Sopenharmony_ci| -------- | -------- | 24e41f4b71Sopenharmony_ci| [bmRequestType](#bmrequesttype) | 请求类型。 | 25e41f4b71Sopenharmony_ci| [bRequest](#brequest) | 具体的请求，其代表的含义不一样。 | 26e41f4b71Sopenharmony_ci| [wValue](#wvalue) | 具体的请求不同。 | 27e41f4b71Sopenharmony_ci| [wIndex](#windex) | 具体的请求不同，其代表的含义不一样，通常用来传递索引或者偏移量。 | 28e41f4b71Sopenharmony_ci| [wLength](#wlength) | 如果有数据阶段的传输，其代表传输的字节个数。 | 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci## 结构体成员变量说明 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci### wIndex 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ci``` 38e41f4b71Sopenharmony_ciuint16_t UsbControlRequestSetup::wIndex 39e41f4b71Sopenharmony_ci``` 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ci**描述:** 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ci具体的请求不同，其代表的含义不一样，通常用来传递索引或者偏移量。 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ci 46e41f4b71Sopenharmony_ci### wLength 47e41f4b71Sopenharmony_ci 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ci``` 50e41f4b71Sopenharmony_ciuint16_t UsbControlRequestSetup::wLength 51e41f4b71Sopenharmony_ci``` 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ci**描述:** 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ci如果有数据阶段的传输，其代表传输的字节个数。 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ci 58e41f4b71Sopenharmony_ci### bRequest 59e41f4b71Sopenharmony_ci 60e41f4b71Sopenharmony_ci 61e41f4b71Sopenharmony_ci``` 62e41f4b71Sopenharmony_ciuint8_t UsbControlRequestSetup::bRequest 63e41f4b71Sopenharmony_ci``` 64e41f4b71Sopenharmony_ci 65e41f4b71Sopenharmony_ci**描述:** 66e41f4b71Sopenharmony_ci 67e41f4b71Sopenharmony_ci具体的请求。 68e41f4b71Sopenharmony_ci 69e41f4b71Sopenharmony_ci 70e41f4b71Sopenharmony_ci### bmRequestType 71e41f4b71Sopenharmony_ci 72e41f4b71Sopenharmony_ci 73e41f4b71Sopenharmony_ci``` 74e41f4b71Sopenharmony_ciuint8_t UsbControlRequestSetup::bmRequestType 75e41f4b71Sopenharmony_ci``` 76e41f4b71Sopenharmony_ci 77e41f4b71Sopenharmony_ci**描述:** 78e41f4b71Sopenharmony_ci 79e41f4b71Sopenharmony_ci请求类型。 80e41f4b71Sopenharmony_ci 81e41f4b71Sopenharmony_ci 82e41f4b71Sopenharmony_ci### wValue 83e41f4b71Sopenharmony_ci 84e41f4b71Sopenharmony_ci 85e41f4b71Sopenharmony_ci``` 86e41f4b71Sopenharmony_ciuint16_t UsbControlRequestSetup::wValue 87e41f4b71Sopenharmony_ci``` 88e41f4b71Sopenharmony_ci 89e41f4b71Sopenharmony_ci**描述:** 90e41f4b71Sopenharmony_ci 91e41f4b71Sopenharmony_ci具体的请求不同，其代表的含义不一样。 92