Cypress Semiconductor SL811HS Manual do Utilizador descarregar pdf (Página 31)

Cypress Semiconductor Corporation

SL811HS and SL811HST: Application Notes

and specifications contained in this document are subject to change without

notice.

Date: 07/26/01

Revision: 1.21

Page: 31

// Generate SOF, setup 48Mhz, suspend disable // Generate SOF, setup 48Mhz, suspend disable

SL11Write(CtrlReg, 0x01); SL11Write(CtrlReg, 0x01);

... ...

4.1.16 Specific Command Transfer

This subroutine is similar to the DeviceIoControl in the Window Driver Model. See the USB

specification v1.1, chapter 9 for more details.

Program Sample 15: Vendor Command

The VendorCmd () setup specific request parameters to the USB devices.

Program Sample 16: Vendor Command

////----------------------------------------------------------------------------------------------------------------------------------------

// Control endpoint// Control endpoint

// return:// return:

// // --1 on failure, 0 on success > 0 if remainder1 on failure, 0 on success > 0 if remainder

////------------------------------------------------------------------------------------------------------------------------------------------

int VendorCmd(BYTE bReq, BYTE bCmd, WORD wValue, WORD wIndex,int VendorCmd(BYTE bReq, BYTE bCmd, WORD wValue, WORD wIndex,

WORD wLen,BYTE* pData) WORD wLen,BYTE* pData)

{ {

SetupPKG setup; SetupPKG setup;

setup.bmRequest = bReq; setup.bmRequest = bReq;

setup.bRequest = bCmd; setup.bRequest = bCmd;

setup.wValue = wValue; setup.wValue = wValue;

setup.wIndex setup.wIndex = wIndex; = wIndex;

setup.wLength = wLen; setup.wLength = wLen;

return ep0Xfer(uDev.wEPxCRC[0], uDev.wPayLoad[0], &setup, pData); return ep0Xfer(uDev.wEPxCRC[0], uDev.wPayLoad[0], &setup, pData);

}}

4.1.17 USB Transfer (Bulk/ISO/Control/Interrupt)

The following subroutines simulate the Micro USBD stack function on the top level.

Program Sample 17: USB Control Transfer

////------------------------------------------------------------------------------------------------------------------------------------------

// ep0Xfer// ep0Xfer

// Dev contains the CRC of EP | Address// Dev contains the CRC of EP | Address

// Return:// Return:

// // -- Fail Fail --11

// // -- Sucess Sucess 0 0

// // -- non non--zero remainder (0 < wLen < setupzero remainder (0 < wLen < setup-->wLength)>wLength)

// //

////------------------------------------------------------------------------------------------------------------------------------------------

int ep0Xfer(WORD Dev, WORD payload, PSetupPKG setup, BYTE *pData)int ep0Xfer(WORD Dev, WORD payload, PSetupPKG setup, BYTE *pData)

{{

BYTE pid=PID_IN; BYTE pid=PID_IN;

WORD wLen = setup WORD wLen = setup-->>wLength;wLength;

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