?? obj_usbdesc.c
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//*----------------------------------------------------------------------------
//* ATMEL Microcontroller Software Support - ROUSSET -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name : obj_udpdesc.c
//* Object : USB peripheral library.
//*
//* 1.0 07/23/01 ODi : Creation
//*----------------------------------------------------------------------------
#include "services/obj_usbdesc.h"
/* ************************************ */
/* AT91F_OpenUsbDesc */
/* */
/* Arguments: */
/* Return: */
/* Pointer toAT91PS_UsbDesc object */
/* Description: */
/* ************************************ */
AT91PS_UsbDesc AT91F_OpenUsbDesc(
AT91PS_UsbDesc pUsbDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UDP pUdp, /* Uregister structure */
char epId) /* endpoint number */
{
pUsbDesc->DispatchRequest = AT91F_UsbDescDispatchRequest;
//pUsbDesc->DispatchClassRequest = (AT91PF_DispatchClassRequest) 0;
//pUsbDesc->DispatchVendorRequest = (AT91PF_DispatchVendorRequest) 0;
//pUsbDesc->ClearFeature = (AT91PF_ClearFeature) 0;
//pUsbDesc->GetConfiguration = (AT91PF_GetConfiguration) 0;
//pUsbDesc->GetDescriptor = (AT91PF_GetDescriptor) 0;
//pUsbDesc->GetInterface = (AT91PF_GetInterface) 0;
//pUsbDesc->GetStatus = (AT91PF_GetStatus) 0;
//pUsbDesc->SetAddress = (AT91PF_SetAddress) 0;
//pUsbDesc->SetConfiguration = (AT91PF_SetConfiguration) 0;
//pUsbDesc->SetDescriptor = (AT91PF_SetDescriptor) 0;
//pUsbDesc->SetFeature = (AT91PF_SetFeature) 0;
//pUsbDesc->SetInterface = (AT91PF_SetInterface) 0;
//pUsbDesc->SynchFrame = (AT91PF_SynchFrame) 0;
pUsbDesc->pUdp = pUdp;
pUsbDesc->epId = epId;
return pUsbDesc;
}
/* ************************************ */
/* usbDescDispatchRequest */
/* */
/* Arguments: */
/* pSetup: pointer to setup datas */
/* Return: */
/* Nothing */
/* Description: */
/* This request handle standard */
/* request or call */
/* usbDescDispatchClassRequest */
/* usbDescDispatchVendorRequest */
/* ************************************ */
void AT91F_UsbDescDispatchRequest(
AT91PS_UsbDesc const pDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UsbSetup pSetup) /* USB setup data Cf USB spec rev 1.1 */
{
switch ((pSetup->bmRequestType & (0x60)) >> 5) {
case 0: /* Standard request */
switch (pSetup->bRequest) {
case USB_CLEAR_FEATURE: AT91F_UsbDescClearFeature (pDesc, pSetup); break;
case USB_GET_CONFIGURATION: AT91F_UsbDescGetConfiguration(pDesc, pSetup); break;
case USB_GET_DESCRIPTOR: AT91F_UsbDescGetDescriptor (pDesc, pSetup); break;
case USB_GET_INTERFACE: AT91F_UsbDescGetInterface (pDesc, pSetup); break;
case USB_GET_STATUS: AT91F_UsbDescGetStatus (pDesc, pSetup); break;
case USB_SET_ADDRESS: AT91F_UsbDescSetAddress (pDesc, pSetup); break;
case USB_SET_CONFIGURATION: AT91F_UsbDescSetConfiguration(pDesc, pSetup); break;
case USB_SET_DESCRIPTOR: AT91F_UsbDescSetDescriptor (pDesc, pSetup); break;
case USB_SET_FEATURE: AT91F_UsbDescSetFeature (pDesc, pSetup); break;
case USB_SET_INTERFACE: AT91F_UsbDescSetInterface (pDesc, pSetup); break;
case USB_SYNCH_FRAME: AT91F_UsbDescSynchFrame (pDesc, pSetup); break;
default: AT91F_UdpEpStall (pDesc->pUdp, pDesc->epId); break;
}
break;
case 1: /* Class request */
if (pDesc->DispatchClassRequest)
pDesc->DispatchClassRequest(pSetup, pDesc->pPrivateClassData);
break;
case 2: /* Vendor request */
if (pDesc->DispatchVendorRequest)
pDesc->DispatchVendorRequest(pSetup, pDesc->pPrivateVendorData);
break;
default: /* Reserved */
AT91F_UdpEpStall(pDesc->pUdp, pDesc->epId);
break;
}
return;
}
/* ************************************ */
/* AT91F_UsbDescClearFeature */
/* */
/* Arguments: */
/* pSetup: pointer to setup datas */
/* Return: */
/* Nothing */
/* Description: */
/* This request is used to clear or */
/* disable a specific feature */
/* ************************************ */
void AT91F_UsbDescClearFeature(
AT91PS_UsbDesc const pUsbDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UsbSetup pSetup) /* USB setup data Cf USB spec rev 1.1 */
{
u_int usbState = AT91F_UdpGetState(pUsbDesc->pUdp);
u_int recipient = (pSetup->bmRequestType & 0x1F);
/* Check request arguments */
if (recipient > 2 || pSetup->wLength != 0)
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
/* ================ Configured state ================= */
else if ( (usbState & UDP_CONFG) ) {
/* If an application handler exists, transmit the request */
if (pUsbDesc->ClearFeature)
pUsbDesc->ClearFeature(recipient, pSetup->wIndex, pSetup->wValue, pUsbDesc->pPrivateStandardData);
else
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* =================== Address state ================= */
else if ( (usbState & UDP_FADDEN) ) {
/* This request is valid in Address State only when reference endpoint 0 */
if (recipient != 0 && pSetup->wIndex != 0)
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
else {
/* If an application handler exists, transmit the request */
if (pUsbDesc->ClearFeature )
pUsbDesc->ClearFeature(recipient, pSetup->wIndex, pSetup->wValue, pUsbDesc->pPrivateStandardData);
else
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
}
/* =================== Default state ================= */
else
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* ************************************ */
/* AT91F_UsbDescGetConfiguration */
/* */
/* Arguments: */
/* pSetup: pointer to setup datas */
/* Return: */
/* Nothing */
/* Description: */
/* This request returns the current */
/* device configuration value */
/* ************************************ */
void AT91F_UsbDescGetConfiguration(
AT91PS_UsbDesc const pUsbDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UsbSetup pSetup) /* USB setup data Cf USB spec rev 1.1 */
{
u_int usbState = AT91F_UdpGetState(pUsbDesc->pUdp);
/* Check request arguments */
if (pSetup->wValue != 0 || pSetup->wIndex != 0 || pSetup->wLength != 1)
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
/* ================ Configured state ================= */
else if ( (usbState & UDP_CONFG) ) {
/* If an application handler exists, transmit the request */
if (pUsbDesc->GetConfiguration )
pUsbDesc->GetConfiguration(pUsbDesc->pPrivateStandardData);
else
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* =================== Address state ================= */
else if ( (usbState & UDP_FADDEN) ) {
/* Return a 0 value */
AT91F_UdpEpWrite(pUsbDesc->pUdp, pUsbDesc->epId, "\0x00", 1);
AT91F_UdpEpEow(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* =================== Default state ================= */
else
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* ************************************ */
/* AT91F_UsbDescGetDescriptor */
/* */
/* Arguments: */
/* pSetup: pointer to setup datas */
/* Return: */
/* Nothing */
/* Description: */
/* This request returns the */
/* specified descriptor if the */
/* descriptor exists */
/* ************************************ */
void AT91F_UsbDescGetDescriptor(
AT91PS_UsbDesc const pUsbDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UsbSetup pSetup) /* USB setup data Cf USB spec rev 1.1 */
{
/* This request is valid in all states */
if (pUsbDesc->GetDescriptor)
pUsbDesc->GetDescriptor (
((pSetup->wValue) >> 8), /* Descriptor type */
((pSetup->wValue) & 0xFF), /* Descriptor Index */
pSetup->wIndex, /* Language ID */
pSetup->wLength, /* Descripotr Length */
pUsbDesc->pPrivateStandardData);
else
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* ************************************ */
/* AT91F_UsbDescGetInterface */
/* */
/* Arguments: */
/* pSetup: pointer to setup datas */
/* Return: */
/* Nothing */
/* Description: */
/* This request returns the */
/* selected alternate setting for */
/* the specified interface */
/* ************************************ */
void AT91F_UsbDescGetInterface(
AT91PS_UsbDesc const pUsbDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UsbSetup pSetup) /* USB setup data Cf USB spec rev 1.1 */
{
u_int usbState = AT91F_UdpGetState(pUsbDesc->pUdp);
/* Check request arguments */
if (pSetup->wValue != 0 || pSetup->wLength != 1)
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
/* ================ Configured state ================= */
else if ( (usbState & UDP_CONFG) ) {
/* If an application handler exists, transmit the request */
if (pUsbDesc->GetInterface)
pUsbDesc->GetInterface(pSetup->wIndex, pUsbDesc->pPrivateStandardData);
else
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* =================== Address state ================= */
else if ( (usbState & UDP_FADDEN) )
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
/* =================== Default state ================= */
else
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* ************************************ */
/* AT91F_UsbDescGetStatus */
/* */
/* Arguments: */
/* pSetup: pointer to setup datas */
/* Return: */
/* Nothing */
/* Description: */
/* This request returns status for */
/* the specified endpoint */
/* ************************************ */
void AT91F_UsbDescGetStatus(
AT91PS_UsbDesc const pUsbDesc, /* pointer to a AT91S_UsbDesc structure */
AT91PS_UsbSetup pSetup) /* USB setup data Cf USB spec rev 1.1 */
{
u_int usbState = AT91F_UdpGetState(pUsbDesc->pUdp);
u_int recipient = (pSetup->bmRequestType & 0x1F);
/* Check request arguments */
if (recipient > 2 || pSetup->wValue != 0 || pSetup->wLength != 2)
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
else if (recipient == 0 && pSetup->wIndex != 0)
/* Device behavior not specified */
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
/* ================ Configured state ================= */
else if ( (usbState & UDP_CONFG) ) {
if (pUsbDesc->GetStatus)
pUsbDesc->GetStatus(recipient, pSetup->wIndex, pUsbDesc->pPrivateStandardData);
else
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
}
/* =================== Address state ================= */
else if ( (usbState & UDP_FADDEN) ) {
if (pSetup->wIndex != 0 || !(pUsbDesc->GetStatus))
AT91F_UdpEpStall(pUsbDesc->pUdp, pUsbDesc->epId);
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