Cypress Semiconductor AN6077 Manual do Utilizador descarregar pdf (Página 81)

case GD_DEVICE_QUALIFIER: // Device

Qualifier

// only retuen a device

qualifier if this is a high speed

// capable chip.

if (HighSpeedCapable())

{

SUDPTRH = MSB(pDeviceQualDscr);

SUDPTRL = LSB(pDeviceQualDscr);

}

else

{

EZUSB_STALL_EP0();

}

break;

case GD_CONFIGURATION: // Configuration

SUDPTRH = MSB(pConfigDscr);

SUDPTRL = LSB(pConfigDscr);

break;

case GD_OTHER_SPEED_CONFIGURATION: //

Other Speed Configuration

SUDPTRH = MSB(pOtherConfigDscr);

SUDPTRL = LSB(pOtherConfigDscr);

break;

case GD_STRING: // String

if(dscr_ptr = (void

*)EZUSB_GetStringDscr(SETUPDAT[2]))

{

SUDPTRH = MSB(dscr_ptr);

SUDPTRL = LSB(dscr_ptr);

}

else

EZUSB_STALL_EP0(); // Stall End Point 0

break;

default: // Invalid request

EZUSB_STALL_EP0(); // Stall End Point 0

}

break;

case SC_GET_INTERFACE: // *** Get

Interface

DR_GetInterface();

break;

case SC_SET_INTERFACE: // *** Set

Interface

DR_SetInterface();

break;

case SC_SET_CONFIGURATION: // *** Set

Configuration

DR_SetConfiguration();

break;

case SC_GET_CONFIGURATION: // *** Get

Configuration

DR_GetConfiguration();

break;

case SC_GET_STATUS: // *** Get Status

if(DR_GetStatus())

switch(SETUPDAT[0])

{

case GS_DEVICE: // Device

EP0BUF[0] = ((BYTE)Rwuen << 1) |

(BYTE)Selfpwr;

EP0BUF[1] = 0;

EP0BCH = 0;

EP0BCL = 2;

break;

case GS_INTERFACE: // Interface

EP0BUF[0] = 0;

EP0BUF[1] = 0;

EP0BCH = 0;

EP0BCL = 2;

break;

case GS_ENDPOINT: // End Point

EP0BUF[0] = *(BYTE xdata *)

epcs(SETUPDAT[4]) & bmEPSTALL;

EP0BUF[1] = 0;

EP0BCH = 0;

EP0BCL = 2;

break;

default: // Invalid Command

EZUSB_STALL_EP0(); // Stall End Point 0

}

break;

case SC_CLEAR_FEATURE: // *** Clear

Feature

if(DR_ClearFeature())

switch(SETUPDAT[0])

{

case FT_DEVICE: // Device

if(SETUPDAT[2] == 1)

Rwuen = FALSE; // Disable Remote

Wakeup

else

EZUSB_STALL_EP0(); // Stall End Point 0

break;

case FT_ENDPOINT: // End Point

if(SETUPDAT[2] == 0)

{

*(BYTE xdata *) epcs(SETUPDAT[4]) &=

~bmEPSTALL;

EZUSB_RESET_DATA_TOGGLE( SETUPDA

T[4] );

}

else

EZUSB_STALL_EP0(); // Stall End Point 0

break;

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