收藏本站
Chapter 6
6
6-2 DEVICE DRIVER MODEL
No particular memory interface is required by μC/USB-Device's driver model. Therefore, the
USB device controller may use the assistance of a Direct Memory Access (DMA) controller
to transfer data or handle the data transfers directly.
6-3 DEVICE DRIVER API
All device drivers must declare an instance of the appropriate device driver API structure as
a global variable within the source code. The API structure is an ordered list of function
pointers utilized by μC/USB-Device when device hardware services are required.
A sample device driver API structure is shown below.
const
USBD_DRV_API
USBD_DrvAPI_<controller> = { USBD_DrvInit,
USBD_DrvStart,
USBD_DrvStop,
USBD_DrvAddrSet,
USBD_DrvAddrEn,
USBD_DrvCfgSet,
USBD_DrvCfgClr,
USBD_DrvGetFrameNbr,
USBD_DrvEP_Open,
USBD_DrvEP_Close,
USBD_DrvEP_RxStart,
USBD_DrvEP_Rx,
USBD_DrvEP_RxZLP,
USBD_DrvEP_Tx,
USBD_DrvEP_TxStart,
USBD_DrvEP_TxZLP,
USBD_DrvEP_Abort,
USBD_DrvEP_Stall,
USBD_DrvISR_Handler
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
};
Listing 6-1 Device Driver Interface API
Note: It is the device driver developers’ responsibility to ensure that all of the functions
listed within the API are properly implemented and that the order of the functions within
the API structure is correct. The different function pointers are:
78
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AD637-EVALZ BOARD EVALUATION FOR AD637
AD736-EVALZ BOARD EVALUATION FOR AD736
AD737-EVALZ BOARD EVALUATION FOR AD737
AD8007AKS-EBZ BOARD EVAL FOR AD8007AKS
AD8018ARU-EVAL BOARD EVAL FOR AD8018
AD8034ART-EBZ BOARD EVAL FOR AD8034ART
AD8040AR-EBZ BOARD EVAL FOR AD8040AR
AD8045ARD-EBZ BOARD EVAL FOR AD8045ARD
相关代理商/技术参数
AD-UCUSB-HCCDC-SPL 制造商:Analog Devices 功能描述:?C/USB HC CDC FOR CCES SINGLE PROD LIC - Virtual or Non-Physical Inventory (Software & Literature)
AD-UCUSB-HCMSC-SPL 制造商:Analog Devices 功能描述:?C/USB HC MSC FOR CCES SINGLE PROD LIC - Virtual or Non-Physical Inventory (Software & Literature)
AD-UCUSBH-MCDC-SPL 制造商:Analog Devices 功能描述:MAINTENANCE ?C/USBH CDC SINGLE PRD LIC - Virtual or Non-Physical Inventory (Software & Literature)
AD-UCUSBH-MHID-SPL 制造商:Analog Devices 功能描述:MAINTENANCE ?C/USBH HID SINGLE PRD LIC - Virtual or Non-Physical Inventory (Software & Literature)
AD-UCUSBH-MMSC-SPL 制造商:Analog Devices 功能描述:MAINTENANCE ?C/USBH MSC SINGLE PRD LIC - Virtual or Non-Physical Inventory (Software & Literature)
AD-UCUSBH-SPRD 功能描述:PRD LIC UCUSB DEV CORE CCES SGL 制造商:analog devices inc. 系列:CrossCore? Embedded Studio 零件状态:在售 类型:- 应用:- 版本:- 许可长度:- 许可 - 用户明细:- 操作系统:- 配套使用产品/相关产品:Blackfin? 处理器 媒体分发类型:- 标准包装:1
ADUM1100 制造商:AD 制造商全称:Analog Devices 功能描述:iCoupler Digital Isolator
ADUM1100AR 功能描述:IC DIGITAL ISOLATOR 1CH 8-SOIC RoHS:否 类别:隔离器 >> 数字隔离器 系列:iCoupler® 产品培训模块:IsoLoop® Isolator 标准包装:50 系列:IsoLoop® 输入 - 1 侧/2 侧:5/0 通道数:5 电源电压:3 V ~ 5.5 V 电压 - 隔离:2500Vrms 数据速率:110Mbps 传输延迟:12ns 输出类型:CMOS 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 工作温度:-40°C ~ 85°C 其它名称:390-1053-5