diff options
Diffstat (limited to 'at91lib/usb/device/core/USBD_UDPHS.c')
| -rw-r--r-- | at91lib/usb/device/core/USBD_UDPHS.c | 1680 |
1 files changed, 1680 insertions, 0 deletions
diff --git a/at91lib/usb/device/core/USBD_UDPHS.c b/at91lib/usb/device/core/USBD_UDPHS.c new file mode 100644 index 0000000..f7c0684 --- /dev/null +++ b/at91lib/usb/device/core/USBD_UDPHS.c @@ -0,0 +1,1680 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include "USBD.h"
+#include "USBDCallbacks.h"
+#include "USBDDriver.h"
+#include <board.h>
+#include <pio/pio.h>
+#include <utility/trace.h>
+#include <utility/led.h>
+#include <usb/common/core/USBEndpointDescriptor.h>
+#include <usb/common/core/USBGenericRequest.h>
+#include <usb/common/core/USBFeatureRequest.h>
+
+#include <stdio.h>
+
+#ifdef BOARD_USB_UDPHS
+
+//------------------------------------------------------------------------------
+// Definitions
+//------------------------------------------------------------------------------
+
+/// Maximum number of endpoints interrupts.
+#define NUM_IT_MAX \
+ (AT91C_BASE_UDPHS->UDPHS_IPFEATURES & AT91C_UDPHS_EPT_NBR_MAX)
+/// Maximum number of endpoint DMA interrupts
+#define NUM_IT_MAX_DMA \
+ ((AT91C_BASE_UDPHS->UDPHS_IPFEATURES & AT91C_UDPHS_DMA_CHANNEL_NBR)>>4)
+/// Bits that should be shifted to access DMA control bits.
+#define SHIFT_DMA 24
+/// Bits that should be shifted to access interrupt bits.
+#define SHIFT_INTERUPT 8
+
+/// Compile option, use DMA. Remove this define for not use DMA.
+#define DMA
+
+/// Max size of the FMA FIFO
+#define DMA_MAX_FIFO_SIZE 65536
+
+//------------------------------------------------------------------------------
+/// \page "Endpoint states"
+/// This page lists the endpoint states.
+/// !States
+// - UDP_ENDPOINT_DISABLED
+// - UDP_ENDPOINT_HALTED
+// - UDP_ENDPOINT_IDLE
+// - UDP_ENDPOINT_SENDING
+// - UDP_ENDPOINT_RECEIVING
+
+/// Endpoint states: Endpoint is disabled
+#define UDP_ENDPOINT_DISABLED 0
+/// Endpoint states: Endpoint is halted (i.e. STALLs every request)
+#define UDP_ENDPOINT_HALTED 1
+/// Endpoint states: Endpoint is idle (i.e. ready for transmission)
+#define UDP_ENDPOINT_IDLE 2
+/// Endpoint states: Endpoint is sending data
+#define UDP_ENDPOINT_SENDING 3
+/// Endpoint states: Endpoint is receiving data
+#define UDP_ENDPOINT_RECEIVING 4
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Structures
+//------------------------------------------------------------------------------
+
+/// Describes an ongoing transfer on a UDP endpoint.
+typedef struct
+{
+ /// Pointer to a data buffer used for emission/reception.
+ char *pData;
+ /// Number of bytes which have been written into the UDP internal FIFO
+ /// buffers.
+ volatile int buffered;
+ /// Number of bytes which have been sent/received.
+ volatile int transferred;
+ /// Number of bytes which have not been buffered/transferred yet.
+ volatile int remaining;
+ /// Optional callback to invoke when the transfer completes.
+ volatile TransferCallback fCallback;
+ /// Optional argument to the callback function.
+ void *pArgument;
+} Transfer;
+
+//------------------------------------------------------------------------------
+/// Describes the state of an endpoint of the UDP controller.
+//------------------------------------------------------------------------------
+typedef struct
+{
+ /// Current endpoint state.
+ volatile unsigned char state;
+ /// Current reception bank (0 or 1).
+ unsigned char bank;
+ /// Maximum packet size for the endpoint.
+ unsigned short size;
+ /// Describes an ongoing transfer (if current state is either
+ /// <UDP_ENDPOINT_SENDING> or <UDP_ENDPOINT_RECEIVING>)
+ Transfer transfer;
+} Endpoint;
+
+//------------------------------------------------------------------------------
+// Internal variables
+//------------------------------------------------------------------------------
+
+/// Holds the internal state for each endpoint of the UDP.
+static Endpoint endpoints[BOARD_USB_NUMENDPOINTS];
+/// Device current state.
+static unsigned char deviceState;
+/// Indicates the previous device state
+static unsigned char previousDeviceState;
+/// Special case for send a ZLP
+static unsigned char sendZLP = 0;
+
+/// 7.1.20 Test Mode Support
+/// Test codes for the USB HS test mode.
+static const char test_packet_buffer[] = {
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // JKJKJKJK * 9
+ 0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA,0xAA, // JJKKJJKK * 8
+ 0xEE,0xEE,0xEE,0xEE,0xEE,0xEE,0xEE,0xEE, // JJJJKKKK * 8
+ 0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, // JJJJJJJKKKKKKK * 8
+ 0x7F,0xBF,0xDF,0xEF,0xF7,0xFB,0xFD, // JJJJJJJK * 8
+ 0xFC,0x7E,0xBF,0xDF,0xEF,0xF7,0xFB,0xFD,0x7E // {JKKKKKKK * 10}, JK
+};
+
+//------------------------------------------------------------------------------
+// Internal Functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Disables the BIAS of the USB controller
+//------------------------------------------------------------------------------
+static inline void UDPHS_DisableBIAS( void )
+{
+ // For CAP9, SAM9RL, HS
+#if !defined (BOARD_USB_NO_BIAS_COMMAND)
+ AT91C_BASE_PMC->PMC_UCKR &= ~AT91C_CKGR_BIASEN_ENABLED;
+#endif
+}
+
+//------------------------------------------------------------------------------
+/// Enables the BIAS of the USB controller
+//------------------------------------------------------------------------------
+static inline void UDPHS_EnableBIAS( void )
+{
+ // For CAP9, SAM9RL, HS
+#if !defined (BOARD_USB_NO_BIAS_COMMAND)
+ UDPHS_DisableBIAS();
+ AT91C_BASE_PMC->PMC_UCKR |= AT91C_CKGR_BIASEN_ENABLED;
+#endif
+}
+
+//------------------------------------------------------------------------------
+/// Enable UDPHS clock
+//------------------------------------------------------------------------------
+static inline void UDPHS_EnableUsbClock( void )
+{
+#if !defined (PMC_BY_HARD)
+ AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDPHS);
+ // Enable 480MHZ
+ AT91C_BASE_CKGR->CKGR_UCKR |= (AT91C_CKGR_PLLCOUNT & (3 << 20)) | AT91C_CKGR_UPLLEN;
+ // Wait until UTMI PLL is locked
+ while ((AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCKU) == 0);
+#endif
+}
+
+//------------------------------------------------------------------------------
+/// Disable UDPHS clock
+//------------------------------------------------------------------------------
+static inline void UDPHS_DisableUsbClock( void )
+{
+#if !defined (PMC_BY_HARD)
+ AT91C_BASE_PMC->PMC_PCDR = (1 << AT91C_ID_UDPHS);
+ // 480MHZ
+ AT91C_BASE_CKGR->CKGR_UCKR &= ~AT91C_CKGR_UPLLEN;
+#endif
+}
+
+//------------------------------------------------------------------------------
+/// Handles a completed transfer on the given endpoint, invoking the
+/// configured callback if any.
+/// \param bEndpoint Number of the endpoint for which the transfer has completed.
+/// \param bStatus Status code returned by the transfer operation
+//------------------------------------------------------------------------------
+static void UDPHS_EndOfTransfer( unsigned char bEndpoint, char bStatus )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+
+ // Check that endpoint was sending or receiving data
+ if( (pEndpoint->state == UDP_ENDPOINT_RECEIVING)
+ || (pEndpoint->state == UDP_ENDPOINT_SENDING) ) {
+
+ TRACE_DEBUG_WP("Eo");
+
+ // Endpoint returns in Idle state
+ pEndpoint->state = UDP_ENDPOINT_IDLE;
+
+ // Invoke callback is present
+ if (pTransfer->fCallback != 0) {
+
+ ((TransferCallback) pTransfer->fCallback)
+ (pTransfer->pArgument,
+ bStatus,
+ pTransfer->transferred,
+ pTransfer->remaining + pTransfer->buffered);
+ }
+ else {
+ TRACE_DEBUG_WP("No callBack\n\r");
+ }
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Clears the correct RX flag in endpoint status register
+/// \param bEndpoint Index of endpoint
+//------------------------------------------------------------------------------
+static void UDPHS_ClearRxFlag( unsigned char bEndpoint )
+{
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCLRSTA = AT91C_UDPHS_RX_BK_RDY;
+}
+
+//------------------------------------------------------------------------------
+/// Transfers a data payload from the current tranfer buffer to the endpoint
+/// FIFO
+/// \param bEndpoint Number of the endpoint which is sending data.
+//------------------------------------------------------------------------------
+static void UDPHS_WritePayload( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+ char *pFifo;
+ signed int size;
+ unsigned int dCtr;
+
+ pFifo = (char*)((unsigned int *)AT91C_BASE_UDPHS_EPTFIFO + (16384 * bEndpoint));
+
+ // Get the number of bytes to send
+ size = pEndpoint->size;
+ if (size > pTransfer->remaining) {
+
+ size = pTransfer->remaining;
+ }
+
+ // Update transfer descriptor information
+ pTransfer->buffered += size;
+ pTransfer->remaining -= size;
+
+ // Write packet in the FIFO buffer
+ dCtr = 0;
+ while (size > 0) {
+
+ pFifo[dCtr] = *(pTransfer->pData);
+ pTransfer->pData++;
+ size--;
+ dCtr++;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Transfers a data payload from an endpoint FIFO to the current transfer buffer
+/// \param bEndpoint Endpoint number.
+/// \param wPacketSize Size of received data packet
+//------------------------------------------------------------------------------
+static void UDPHS_ReadPayload( unsigned char bEndpoint, int wPacketSize )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+ char *pFifo;
+ unsigned char dBytes=0;
+
+ pFifo = (char*)((unsigned int *)AT91C_BASE_UDPHS_EPTFIFO + (16384 * bEndpoint));
+
+ // Check that the requested size is not bigger than the remaining transfer
+ if (wPacketSize > pTransfer->remaining) {
+
+ pTransfer->buffered += wPacketSize - pTransfer->remaining;
+ wPacketSize = pTransfer->remaining;
+ }
+
+ // Update transfer descriptor information
+ pTransfer->remaining -= wPacketSize;
+ pTransfer->transferred += wPacketSize;
+
+ // Retrieve packet
+ while (wPacketSize > 0) {
+
+ *(pTransfer->pData) = pFifo[dBytes];
+ pTransfer->pData++;
+ wPacketSize--;
+ dBytes++;
+ }
+}
+
+
+//------------------------------------------------------------------------------
+/// Received SETUP packet from endpoint 0 FIFO
+/// \param pRequest Generic USB SETUP request sent over Control endpoints
+//------------------------------------------------------------------------------
+static void UDPHS_ReadRequest( USBGenericRequest *pRequest )
+{
+ unsigned int *pData = (unsigned int *)pRequest;
+ unsigned int fifo;
+
+ fifo = (AT91C_BASE_UDPHS_EPTFIFO->UDPHS_READEPT0[0]);
+ *pData = fifo;
+ fifo = (AT91C_BASE_UDPHS_EPTFIFO->UDPHS_READEPT0[0]);
+ pData++;
+ *pData = fifo;
+ //TRACE_ERROR("SETUP: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n\r", pData[0],pData[1],pData[2],pData[3],pData[4],pData[5],pData[6],pData[7]);
+}
+
+//------------------------------------------------------------------------------
+/// Reset all endpoint transfer descriptors
+//------------------------------------------------------------------------------
+static void UDPHS_ResetEndpoints( void )
+{
+ Endpoint *pEndpoint;
+ Transfer *pTransfer;
+ unsigned char bEndpoint;
+
+ // Reset the transfer descriptor of every endpoint
+ for( bEndpoint = 0; bEndpoint < BOARD_USB_NUMENDPOINTS; bEndpoint++ ) {
+
+ pEndpoint = &(endpoints[bEndpoint]);
+ pTransfer = &(pEndpoint->transfer);
+
+ // Reset endpoint transfer descriptor
+ pTransfer->pData = 0;
+ pTransfer->transferred = -1;
+ pTransfer->buffered = -1;
+ pTransfer->remaining = -1;
+ pTransfer->fCallback = 0;
+ pTransfer->pArgument = 0;
+
+ // Reset endpoint state
+ pEndpoint->bank = 0;
+ pEndpoint->state = UDP_ENDPOINT_DISABLED;
+ }
+}
+
+
+//------------------------------------------------------------------------------
+/// Disable all endpoints (except control endpoint 0), aborting current
+/// transfers if necessary
+//------------------------------------------------------------------------------
+static void UDPHS_DisableEndpoints( void )
+{
+ unsigned char bEndpoint;
+
+ // Disable each endpoint, terminating any pending transfer
+ // Control endpoint 0 is not disabled
+ for( bEndpoint = 1; bEndpoint < BOARD_USB_NUMENDPOINTS; bEndpoint++ ) {
+
+ UDPHS_EndOfTransfer( bEndpoint, USBD_STATUS_ABORTED );
+ endpoints[bEndpoint].state = UDP_ENDPOINT_DISABLED;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Endpoint interrupt handler.
+/// Handle IN/OUT transfers, received SETUP packets and STALLing
+/// \param bEndpoint Index of endpoint
+//------------------------------------------------------------------------------
+static void UDPHS_EndpointHandler( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+ unsigned int status = AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTSTA;
+ unsigned short wPacketSize;
+ USBGenericRequest request;
+
+ TRACE_DEBUG_WP("E%d ", bEndpoint);
+ TRACE_DEBUG_WP("st:0x%X ", status);
+
+ // Handle interrupts
+ // IN packet sent
+ if( (AT91C_UDPHS_TX_PK_RDY == (AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTL & AT91C_UDPHS_TX_PK_RDY))
+ && (0 == (status & AT91C_UDPHS_TX_PK_RDY )) ) {
+
+ TRACE_DEBUG_WP("Wr ");
+
+ // Check that endpoint was in Sending state
+ if( pEndpoint->state == UDP_ENDPOINT_SENDING ) {
+
+ if (pTransfer->buffered > 0) {
+ pTransfer->transferred += pTransfer->buffered;
+ pTransfer->buffered = 0;
+ }
+
+ if( ((pTransfer->buffered)==0)
+ &&((pTransfer->transferred)==0)
+ &&((pTransfer->remaining)==0)
+ &&(sendZLP == 0)) {
+ sendZLP = 1;
+ }
+
+ // End of transfer ?
+ if( (pTransfer->remaining > 0)
+ ||(sendZLP == 1)) {
+ TRACE_DEBUG_WP("\n\r1pTransfer->buffered %d \n\r", pTransfer->buffered);
+ TRACE_DEBUG_WP("1pTransfer->transferred %d \n\r", pTransfer->transferred);
+ TRACE_DEBUG_WP("1pTransfer->remaining %d \n\r", pTransfer->remaining);
+
+ // Transfer remaining data
+ TRACE_DEBUG_WP(" %d ", pEndpoint->size);
+
+ // Send next packet
+ UDPHS_WritePayload(bEndpoint);
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTSETSTA = AT91C_UDPHS_TX_PK_RDY;
+ sendZLP = 2;
+ }
+ else {
+ TRACE_DEBUG_WP("\n\r0pTransfer->buffered %d \n\r", pTransfer->buffered);
+ TRACE_DEBUG_WP("0pTransfer->transferred %d \n\r", pTransfer->transferred);
+ TRACE_DEBUG_WP("0pTransfer->remaining %d \n\r", pTransfer->remaining);
+
+ TRACE_DEBUG_WP(" %d ", pTransfer->transferred);
+
+ // Disable interrupt if this is not a control endpoint
+ if( AT91C_UDPHS_EPT_TYPE_CTL_EPT != (AT91C_UDPHS_EPT_TYPE&(AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG)) ) {
+
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~(1<<SHIFT_INTERUPT<<bEndpoint);
+ }
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLDIS = AT91C_UDPHS_TX_PK_RDY;
+
+ UDPHS_EndOfTransfer(bEndpoint, USBD_STATUS_SUCCESS);
+ sendZLP = 0;
+ }
+ }
+ else {
+
+ TRACE_ERROR("Error Wr");
+ }
+ }
+
+ // OUT packet received
+ if( AT91C_UDPHS_RX_BK_RDY == (status & AT91C_UDPHS_RX_BK_RDY) ) {
+
+ TRACE_DEBUG_WP("Rd ");
+
+ // Check that the endpoint is in Receiving state
+ if (pEndpoint->state != UDP_ENDPOINT_RECEIVING) {
+
+ // Check if an ACK has been received on a Control endpoint
+ if( (0 == (AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG & AT91C_UDPHS_EPT_TYPE))
+ && (0 == (status & AT91C_UDPHS_BYTE_COUNT)) ) {
+
+ // Control endpoint, 0 bytes received
+ // Acknowledge the data and finish the current transfer
+ TRACE_DEBUG_WP("Ack ");
+ UDPHS_ClearRxFlag(bEndpoint);
+ UDPHS_EndOfTransfer(bEndpoint, USBD_STATUS_SUCCESS);
+ }
+ // Check if the data has been STALLed
+ else if( AT91C_UDPHS_FRCESTALL == (status & AT91C_UDPHS_FRCESTALL)) {
+
+ // Discard STALLed data
+ TRACE_DEBUG_WP("Discard ");
+ UDPHS_ClearRxFlag(bEndpoint);
+ }
+ // NAK the data
+ else {
+
+ TRACE_DEBUG_WP("Nak ");
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~(1<<SHIFT_INTERUPT<<bEndpoint);
+ }
+ }
+ else {
+
+ // Endpoint is in Read state
+ // Retrieve data and store it into the current transfer buffer
+ wPacketSize = (unsigned short)((status & AT91C_UDPHS_BYTE_COUNT)>>20);
+
+ TRACE_DEBUG_WP("%d ", wPacketSize);
+ UDPHS_ReadPayload(bEndpoint, wPacketSize);
+ UDPHS_ClearRxFlag(bEndpoint);
+
+ // Check if the transfer is finished
+ if ((pTransfer->remaining == 0) || (wPacketSize < pEndpoint->size)) {
+
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLDIS = AT91C_UDPHS_RX_BK_RDY;
+
+ // Disable interrupt if this is not a control endpoint
+ if( AT91C_UDPHS_EPT_TYPE_CTL_EPT != (AT91C_UDPHS_EPT_TYPE & (AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG)) ) {
+
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~(1<<SHIFT_INTERUPT<<bEndpoint);
+ }
+ UDPHS_EndOfTransfer(bEndpoint, USBD_STATUS_SUCCESS);
+ }
+ }
+ }
+
+
+ // STALL sent
+ if( AT91C_UDPHS_STALL_SNT == (status & AT91C_UDPHS_STALL_SNT) ) {
+
+ TRACE_WARNING( "Sta 0x%X [%d] ", status, bEndpoint);
+
+ // Acknowledge the stall flag
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCLRSTA = AT91C_UDPHS_STALL_SNT;
+
+ // If the endpoint is not halted, clear the STALL condition
+ if (pEndpoint->state != UDP_ENDPOINT_HALTED) {
+
+ TRACE_WARNING( "_ " );
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCLRSTA = AT91C_UDPHS_FRCESTALL;
+ }
+ }
+
+ // SETUP packet received
+ if( AT91C_UDPHS_RX_SETUP == (status & AT91C_UDPHS_RX_SETUP) ) {
+
+ TRACE_DEBUG_WP("Stp ");
+
+ // If a transfer was pending, complete it
+ // Handles the case where during the status phase of a control write
+ // transfer, the host receives the device ZLP and ack it, but the ack
+ // is not received by the device
+ if ((pEndpoint->state == UDP_ENDPOINT_RECEIVING)
+ || (pEndpoint->state == UDP_ENDPOINT_SENDING)) {
+
+ UDPHS_EndOfTransfer(bEndpoint, USBD_STATUS_SUCCESS);
+ }
+ // Copy the setup packet
+ UDPHS_ReadRequest(&request);
+
+ // Acknowledge setup packet
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCLRSTA = AT91C_UDPHS_RX_SETUP;
+
+ // Forward the request to the upper layer
+ USBDCallbacks_RequestReceived(&request);
+ }
+
+}
+
+//------------------------------------------------------------------------------
+// Interrupt service routine
+//------------------------------------------------------------------------------
+#ifdef DMA
+//----------------------------------------------------------------------------
+/// Endpoint DMA interrupt handler.
+/// This function (ISR) handles dma interrupts
+/// \param bEndpoint Index of endpoint
+//----------------------------------------------------------------------------
+static void UDPHS_DmaHandler( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+ int justTransferred;
+ unsigned int status;
+ unsigned char result = USBD_STATUS_SUCCESS;
+
+ status = AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMASTATUS;
+ TRACE_DEBUG_WP("Dma Ept%d ", bEndpoint);
+
+ // Disable DMA interrupt to avoid receiving 2 interrupts (B_EN and TR_EN)
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL &=
+ ~(AT91C_UDPHS_END_TR_EN | AT91C_UDPHS_END_B_EN);
+
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~(1 << SHIFT_DMA << bEndpoint);
+
+ if( AT91C_UDPHS_END_BF_ST == (status & AT91C_UDPHS_END_BF_ST) ) {
+
+ TRACE_DEBUG_WP("EndBuffer ");
+
+ // BUFF_COUNT holds the number of untransmitted bytes.
+ // BUFF_COUNT is equal to zero in case of good transfer
+ justTransferred = pTransfer->buffered
+ - ((status & AT91C_UDPHS_BUFF_COUNT) >> 16);
+ pTransfer->transferred += justTransferred;
+
+ pTransfer->buffered = ((status & AT91C_UDPHS_BUFF_COUNT) >> 16);
+
+ pTransfer->remaining -= justTransferred;
+
+ TRACE_DEBUG_WP("\n\r1pTransfer->buffered %d \n\r", pTransfer->buffered);
+ TRACE_DEBUG_WP("1pTransfer->transferred %d \n\r", pTransfer->transferred);
+ TRACE_DEBUG_WP("1pTransfer->remaining %d \n\r", pTransfer->remaining);
+
+ if( (pTransfer->remaining + pTransfer->buffered) > 0 ) {
+
+ // Prepare an other transfer
+ if( pTransfer->remaining > DMA_MAX_FIFO_SIZE ) {
+
+ pTransfer->buffered = DMA_MAX_FIFO_SIZE;
+ }
+ else {
+ pTransfer->buffered = pTransfer->remaining;
+ }
+
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMAADDRESS =
+ (unsigned int)((pTransfer->pData) + (pTransfer->transferred));
+
+ // Clear unwanted interrupts
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMASTATUS;
+
+ // Enable DMA endpoint interrupt
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1 << SHIFT_DMA << bEndpoint);
+ // DMA config for receive the good size of buffer, or an error buffer
+
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL = 0; // raz
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL =
+ ( ((pTransfer->buffered << 16) & AT91C_UDPHS_BUFF_COUNT)
+ | AT91C_UDPHS_END_TR_EN
+ | AT91C_UDPHS_END_TR_IT
+ | AT91C_UDPHS_END_B_EN
+ | AT91C_UDPHS_END_BUFFIT
+ | AT91C_UDPHS_CHANN_ENB );
+ }
+ }
+ else if( AT91C_UDPHS_END_TR_ST == (status & AT91C_UDPHS_END_TR_ST) ) {
+
+ TRACE_DEBUG_WP("EndTransf ");
+
+ pTransfer->transferred = pTransfer->buffered
+ - ((status & AT91C_UDPHS_BUFF_COUNT) >> 16);
+ pTransfer->remaining = 0;
+ TRACE_DEBUG_WP("\n\r0pTransfer->buffered %d \n\r", pTransfer->buffered);
+ TRACE_DEBUG_WP("0pTransfer->transferred %d \n\r", pTransfer->transferred);
+ TRACE_DEBUG_WP("0pTransfer->remaining %d \n\r", pTransfer->remaining);
+ }
+ else {
+
+ TRACE_ERROR("UDPHS_DmaHandler: Error (0x%08X)\n\r", status);
+ result = USBD_STATUS_ABORTED;
+ }
+
+ // Invoke callback
+ if( pTransfer->remaining == 0 ) {
+
+ TRACE_DEBUG_WP("EOT ");
+ UDPHS_EndOfTransfer(bEndpoint, result);
+ }
+}
+#endif
+
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// USB interrupt handler
+/// Manages device resume, suspend, end of bus reset.
+/// Forwards endpoint interrupts to the appropriate handler.
+//------------------------------------------------------------------------------
+void USBD_InterruptHandler(void)
+{
+ unsigned int status;
+ unsigned char numIT;
+
+ if (deviceState >= USBD_STATE_POWERED) {
+
+ LED_Set(USBD_LEDUSB);
+ }
+
+ // Get interrupts status
+ status = AT91C_BASE_UDPHS->UDPHS_INTSTA & AT91C_BASE_UDPHS->UDPHS_IEN;
+
+ // Handle all UDPHS interrupts
+ TRACE_DEBUG_WP("H");
+ while (status != 0) {
+
+ // Start Of Frame (SOF)
+ if ((status & AT91C_UDPHS_IEN_SOF) != 0) {
+
+ TRACE_DEBUG_WP("SOF ");
+
+ // Invoke the SOF callback
+ //USB_StartOfFrameCallback(pUsb);
+
+ // Acknowledge interrupt
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_IEN_SOF;
+ status &= ~AT91C_UDPHS_IEN_SOF;
+ }
+ // Suspend
+ // This interrupt is always treated last (hence the '==')
+ else if (status == AT91C_UDPHS_DET_SUSPD) {
+
+ TRACE_DEBUG_WP("S");
+
+ // The device enters the Suspended state
+ // MCK + UDPCK must be off
+ // Pull-Up must be connected
+ // Transceiver must be disabled
+
+ LED_Clear(USBD_LEDUSB);
+
+ UDPHS_DisableBIAS();
+
+ // Enable wakeup
+ AT91C_BASE_UDPHS->UDPHS_IEN |= AT91C_UDPHS_WAKE_UP | AT91C_UDPHS_ENDOFRSM;
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~AT91C_UDPHS_DET_SUSPD;
+
+ // Acknowledge interrupt
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_DET_SUSPD | AT91C_UDPHS_WAKE_UP;
+ previousDeviceState = deviceState;
+ deviceState = USBD_STATE_SUSPENDED;
+ UDPHS_DisableUsbClock();
+
+ // Invoke the Suspend callback
+ USBDCallbacks_Suspended();
+ }
+ // Resume
+ else if( ((status & AT91C_UDPHS_WAKE_UP) != 0) // line activity
+ || ((status & AT91C_UDPHS_ENDOFRSM) != 0)) { // pc wakeup
+
+//JCB
+#ifdef NOT_DEFINED
+#if !defined(PIN_USB_VBUS)
+ // Configure PIO
+ PIO_Configure(&pinVbus, 1);
+
+ // Check current level on VBus
+ if (PIO_Get(&pinVbus) == 1) // Protection
+#endif
+#endif
+ {
+ // Invoke the Resume callback
+ USBDCallbacks_Resumed();
+
+ TRACE_DEBUG_WP("R");
+
+ UDPHS_EnableUsbClock();
+ UDPHS_EnableBIAS();
+
+ // The device enters Configured state
+ // MCK + UDPCK must be on
+ // Pull-Up must be connected
+ // Transceiver must be enabled
+
+ deviceState = previousDeviceState;
+
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_WAKE_UP | AT91C_UDPHS_ENDOFRSM | AT91C_UDPHS_DET_SUSPD;
+
+ AT91C_BASE_UDPHS->UDPHS_IEN |= AT91C_UDPHS_ENDOFRSM | AT91C_UDPHS_DET_SUSPD;
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_WAKE_UP | AT91C_UDPHS_ENDOFRSM;
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~AT91C_UDPHS_WAKE_UP;
+ }
+// jcb !!!
+#ifdef NOT_DEFINED
+#if !defined(PIN_USB_VBUS)
+ else {
+
+ // No VBUS
+ // Disconnect the pull-up
+ USBD_Disconnect();
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_WAKE_UP;
+ }
+#endif
+#endif
+ }
+ // End of bus reset
+ else if ((status & AT91C_UDPHS_ENDRESET) == AT91C_UDPHS_ENDRESET) {
+
+// TRACE_DEBUG_WP("EoB ");
+
+ // The device enters the Default state
+ deviceState = USBD_STATE_DEFAULT;
+ // MCK + UDPCK are already enabled
+ // Pull-Up is already connected
+ // Transceiver must be enabled
+ // Endpoint 0 must be enabled
+
+ UDPHS_ResetEndpoints();
+ UDPHS_DisableEndpoints();
+ USBD_ConfigureEndpoint(0);
+
+ // Flush and enable the Suspend interrupt
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_WAKE_UP | AT91C_UDPHS_DET_SUSPD;
+
+ //// Enable the Start Of Frame (SOF) interrupt if needed
+ //if (pCallbacks->startOfFrame != 0)
+ //{
+ // AT91C_BASE_UDPHS->UDPHS_IEN |= AT91C_UDPHS_IEN_SOF;
+ //}
+
+ // Invoke the Reset callback
+ USBDCallbacks_Reset();
+
+ // Acknowledge end of bus reset interrupt
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_ENDRESET;
+
+ AT91C_BASE_UDPHS->UDPHS_IEN |= AT91C_UDPHS_DET_SUSPD;
+ }
+ // Handle upstream resume interrupt
+ else if (status & AT91C_UDPHS_UPSTR_RES) {
+
+ TRACE_DEBUG_WP("ExtRes ");
+
+ // - Acknowledge the IT
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_UPSTR_RES;
+ }
+ // Endpoint interrupts
+ else {
+#ifndef DMA
+ // Handle endpoint interrupts
+ for (numIT = 0; numIT < NUM_IT_MAX; numIT++) {
+
+ if ((status & (1 << SHIFT_INTERUPT << numIT)) != 0) {
+
+ UDPHS_EndpointHandler(numIT);
+ }
+ }
+#else
+ // Handle endpoint control interrupt
+ if ((status & (1 << SHIFT_INTERUPT << 0)) != 0) {
+
+ UDPHS_EndpointHandler( 0 );
+ }
+ else {
+
+ numIT = 1;
+ while((status&(0x7E<<SHIFT_DMA)) != 0) {
+
+ // Check if endpoint has a pending interrupt
+ if ((status & (1 << SHIFT_DMA << numIT)) != 0) {
+
+ UDPHS_DmaHandler(numIT);
+ status &= ~(1 << SHIFT_DMA << numIT);
+ if (status != 0) {
+
+ TRACE_INFO_WP("\n\r - ");
+ }
+ }
+ numIT++;
+ }
+ }
+#endif
+ }
+
+ // Retrieve new interrupt status
+ status = AT91C_BASE_UDPHS->UDPHS_INTSTA & AT91C_BASE_UDPHS->UDPHS_IEN;
+
+ TRACE_DEBUG_WP("\n\r");
+ if (status != 0) {
+
+ TRACE_DEBUG_WP(" - ");
+ }
+ }
+
+ if (deviceState >= USBD_STATE_POWERED) {
+
+ LED_Clear(USBD_LEDUSB);
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Configure an endpoint with the provided endpoint descriptor
+/// \param pDdescriptor Pointer to the endpoint descriptor
+//------------------------------------------------------------------------------
+void USBD_ConfigureEndpoint(const USBEndpointDescriptor *pDescriptor)
+{
+ Endpoint *pEndpoint;
+ unsigned char bEndpoint;
+ unsigned char bType;
+ unsigned char bEndpointDir;
+ unsigned char bSizeEpt = 0;
+
+ // NULL descriptor -> Control endpoint 0
+ if (pDescriptor == 0) {
+
+ bEndpoint = 0;
+ pEndpoint = &(endpoints[bEndpoint]);
+ bType = USBEndpointDescriptor_CONTROL;
+ bEndpointDir = 0;
+ pEndpoint->size = BOARD_USB_ENDPOINTS_MAXPACKETSIZE(0);
+ pEndpoint->bank = BOARD_USB_ENDPOINTS_BANKS(0);
+ }
+ else {
+
+ // The endpoint number
+ bEndpoint = USBEndpointDescriptor_GetNumber(pDescriptor);
+ pEndpoint = &(endpoints[bEndpoint]);
+ // Transfer type: Control, Isochronous, Bulk, Interrupt
+ bType = USBEndpointDescriptor_GetType(pDescriptor);
+ // Direction, ignored for control endpoints
+ bEndpointDir = USBEndpointDescriptor_GetDirection(pDescriptor);
+ pEndpoint->size = USBEndpointDescriptor_GetMaxPacketSize(pDescriptor);
+ pEndpoint->bank = BOARD_USB_ENDPOINTS_BANKS(bEndpoint);
+ }
+
+ // Abort the current transfer is the endpoint was configured and in
+ // Write or Read state
+ if( (pEndpoint->state == UDP_ENDPOINT_RECEIVING)
+ || (pEndpoint->state == UDP_ENDPOINT_SENDING) ) {
+
+ UDPHS_EndOfTransfer(bEndpoint, USBD_STATUS_RESET);
+ }
+ pEndpoint->state = UDP_ENDPOINT_IDLE;
+
+ // Disable endpoint
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLDIS = AT91C_UDPHS_SHRT_PCKT
+ | AT91C_UDPHS_BUSY_BANK
+ | AT91C_UDPHS_NAK_OUT
+ | AT91C_UDPHS_NAK_IN
+ | AT91C_UDPHS_STALL_SNT
+ | AT91C_UDPHS_RX_SETUP
+ | AT91C_UDPHS_TX_PK_RDY
+ | AT91C_UDPHS_TX_COMPLT
+ | AT91C_UDPHS_RX_BK_RDY
+ | AT91C_UDPHS_ERR_OVFLW
+ | AT91C_UDPHS_MDATA_RX
+ | AT91C_UDPHS_DATAX_RX
+ | AT91C_UDPHS_NYET_DIS
+ | AT91C_UDPHS_INTDIS_DMA
+ | AT91C_UDPHS_AUTO_VALID
+ | AT91C_UDPHS_EPT_DISABL;
+
+ // Reset Endpoint Fifos
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCLRSTA = AT91C_UDPHS_TOGGLESQ | AT91C_UDPHS_FRCESTALL;
+ AT91C_BASE_UDPHS->UDPHS_EPTRST = 1<<bEndpoint;
+
+ // Configure endpoint
+ if( pEndpoint->size <= 8 ) {
+ bSizeEpt = 0;
+ }
+ else if ( pEndpoint->size <= 16 ) {
+ bSizeEpt = 1;
+ }
+ else if ( pEndpoint->size <= 32 ) {
+ bSizeEpt = 2;
+ }
+ else if ( pEndpoint->size <= 64 ) {
+ bSizeEpt = 3;
+ }
+ else if ( pEndpoint->size <= 128 ) {
+ bSizeEpt = 4;
+ }
+ else if ( pEndpoint->size <= 256 ) {
+ bSizeEpt = 5;
+ }
+ else if ( pEndpoint->size <= 512 ) {
+ bSizeEpt = 6;
+ }
+ else if ( pEndpoint->size <= 1024 ) {
+ bSizeEpt = 7;
+ } //else {
+ // sizeEpt = 0; // control endpoint
+ //}
+
+ // Configure endpoint
+ if (bType == USBEndpointDescriptor_CONTROL) {
+
+ // Enable endpoint IT for control endpoint
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1<<SHIFT_INTERUPT<<bEndpoint);
+ }
+
+
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG = bSizeEpt
+ | (bEndpointDir << 3)
+ | (bType << 4)
+ | ((pEndpoint->bank) << 6);
+
+ while( (signed int)AT91C_UDPHS_EPT_MAPD != (signed int)((AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG) & AT91C_UDPHS_EPT_MAPD) ) {
+
+ // resolved by clearing the reset IT in good place
+ TRACE_ERROR("PB bEndpoint: 0x%X\n\r", bEndpoint);
+ TRACE_ERROR("PB bSizeEpt: 0x%X\n\r", bSizeEpt);
+ TRACE_ERROR("PB bEndpointDir: 0x%X\n\r", bEndpointDir);
+ TRACE_ERROR("PB bType: 0x%X\n\r", bType);
+ TRACE_ERROR("PB pEndpoint->bank: 0x%X\n\r", pEndpoint->bank);
+ TRACE_ERROR("PB UDPHS_EPTCFG: 0x%X\n\r", AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG);
+ for(;;);
+ }
+
+ if (bType == USBEndpointDescriptor_CONTROL) {
+
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLENB = AT91C_UDPHS_RX_BK_RDY
+ | AT91C_UDPHS_RX_SETUP
+ | AT91C_UDPHS_EPT_ENABL;
+ }
+ else {
+#ifndef DMA
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLENB = AT91C_UDPHS_EPT_ENABL;
+#else
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLENB = AT91C_UDPHS_AUTO_VALID
+ | AT91C_UDPHS_EPT_ENABL;
+#endif
+ }
+
+}
+
+//------------------------------------------------------------------------------
+/// Sends data through an USB endpoint (IN)
+/// Sets up the transfer descriptor, write one or two data payloads
+/// (depending on the number of FIFO banks for the endpoint) and then
+/// starts the actual transfer. The operation is complete when all
+/// the data has been sent.
+/// \param bEndpoint Index of endpoint
+/// \param *pData Data to be written
+/// \param dLength Data length to be send
+/// \param fCallback Callback to be call after the success command
+/// \param *pArgument Callback argument
+/// \return USBD_STATUS_LOCKED or USBD_STATUS_SUCCESS
+//------------------------------------------------------------------------------
+char USBD_Write( unsigned char bEndpoint,
+ const void *pData,
+ unsigned int dLength,
+ TransferCallback fCallback,
+ void *pArgument )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+
+ // Return if the endpoint is not in IDLE state
+ if (pEndpoint->state != UDP_ENDPOINT_IDLE) {
+
+ return USBD_STATUS_LOCKED;
+ }
+
+ TRACE_DEBUG_WP("Write%d(%d) ", bEndpoint, dLength);
+
+ // Setup the transfer descriptor
+ pTransfer->pData = (void *) pData;
+ pTransfer->remaining = dLength;
+ pTransfer->buffered = 0;
+ pTransfer->transferred = 0;
+ pTransfer->fCallback = fCallback;
+ pTransfer->pArgument = pArgument;
+
+ // Send one packet
+ pEndpoint->state = UDP_ENDPOINT_SENDING;
+
+#ifdef DMA
+ // Test if endpoint type control
+ if(AT91C_UDPHS_EPT_TYPE_CTL_EPT == (AT91C_UDPHS_EPT_TYPE&(AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG))) {
+#endif
+ // Enable endpoint IT
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1 << SHIFT_INTERUPT << bEndpoint);
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLENB = AT91C_UDPHS_TX_PK_RDY;
+
+#ifdef DMA
+ }
+ else {
+
+ if( pTransfer->remaining == 0 ) {
+ // DMA not handle ZLP
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTSETSTA = AT91C_UDPHS_TX_PK_RDY;
+ // Enable endpoint IT
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1 << SHIFT_INTERUPT << bEndpoint);
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLENB = AT91C_UDPHS_TX_PK_RDY;
+ }
+ else {
+ // Others endpoints (not control)
+ if( pTransfer->remaining > DMA_MAX_FIFO_SIZE ) {
+
+ // Transfer the max
+ pTransfer->buffered = DMA_MAX_FIFO_SIZE;
+ }
+ else {
+ // Transfer the good size
+ pTransfer->buffered = pTransfer->remaining;
+ }
+
+ TRACE_DEBUG_WP("\n\r_WR:%d ", pTransfer->remaining );
+ TRACE_DEBUG_WP("B:%d ", pTransfer->buffered );
+ TRACE_DEBUG_WP("T:%d ", pTransfer->transferred );
+
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMAADDRESS = (unsigned int)(pTransfer->pData);
+
+ // Clear unwanted interrupts
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMASTATUS;
+ // Enable DMA endpoint interrupt
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1 << SHIFT_DMA << bEndpoint);
+ // DMA config
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL = 0; // raz
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL =
+ ( ((pTransfer->buffered << 16) & AT91C_UDPHS_BUFF_COUNT)
+ | AT91C_UDPHS_END_B_EN
+ | AT91C_UDPHS_END_BUFFIT
+ | AT91C_UDPHS_CHANN_ENB );
+ }
+ }
+#endif
+
+ return USBD_STATUS_SUCCESS;
+}
+
+//------------------------------------------------------------------------------
+/// Reads incoming data on an USB endpoint (OUT)
+/// \param bEndpoint Index of endpoint
+/// \param *pData Data to be readen
+/// \param dLength Data length to be receive
+/// \param fCallback Callback to be call after the success command
+/// \param *pArgument Callback argument
+/// \return USBD_STATUS_LOCKED or USBD_STATUS_SUCCESS
+//------------------------------------------------------------------------------
+char USBD_Read( unsigned char bEndpoint,
+ void *pData,
+ unsigned int dLength,
+ TransferCallback fCallback,
+ void *pArgument )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ Transfer *pTransfer = &(pEndpoint->transfer);
+
+ // Return if the endpoint is not in IDLE state
+ if (pEndpoint->state != UDP_ENDPOINT_IDLE) {
+
+ return USBD_STATUS_LOCKED;
+ }
+
+ TRACE_DEBUG_WP("Read%d(%d) ", bEndpoint, dLength);
+
+ // Endpoint enters Receiving state
+ pEndpoint->state = UDP_ENDPOINT_RECEIVING;
+
+ // Set the transfer descriptor
+ pTransfer->pData = pData;
+ pTransfer->remaining = dLength;
+ pTransfer->buffered = 0;
+ pTransfer->transferred = 0;
+ pTransfer->fCallback = fCallback;
+ pTransfer->pArgument = pArgument;
+
+#ifdef DMA
+ // Test if endpoint type control
+ if(AT91C_UDPHS_EPT_TYPE_CTL_EPT == (AT91C_UDPHS_EPT_TYPE&(AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG))) {
+#endif
+ // Control endpoint
+ // Enable endpoint IT
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1 << SHIFT_INTERUPT << bEndpoint);
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCTLENB = AT91C_UDPHS_RX_BK_RDY;
+#ifdef DMA
+ }
+ else {
+
+ TRACE_DEBUG_WP("Read%d(%d) ", bEndpoint, dLength);
+
+ // Others endpoints (not control)
+ if( pTransfer->remaining > DMA_MAX_FIFO_SIZE ) {
+
+ // Transfer the max
+ pTransfer->buffered = DMA_MAX_FIFO_SIZE;
+ }
+ else {
+ // Transfer the good size
+ pTransfer->buffered = pTransfer->remaining;
+ }
+
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMAADDRESS = (unsigned int)(pTransfer->pData);
+
+ // Clear unwanted interrupts
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMASTATUS;
+
+ // Enable DMA endpoint interrupt
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1 << SHIFT_DMA << bEndpoint);
+
+ TRACE_DEBUG_WP("\n\r_RR:%d ", pTransfer->remaining );
+ TRACE_DEBUG_WP("B:%d ", pTransfer->buffered );
+ TRACE_DEBUG_WP("T:%d ", pTransfer->transferred );
+
+ // DMA config
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL = 0; // raz
+ AT91C_BASE_UDPHS->UDPHS_DMA[bEndpoint].UDPHS_DMACONTROL =
+ ( ((pTransfer->buffered << 16) & AT91C_UDPHS_BUFF_COUNT)
+ | AT91C_UDPHS_END_TR_EN
+ | AT91C_UDPHS_END_TR_IT
+ | AT91C_UDPHS_END_B_EN
+ | AT91C_UDPHS_END_BUFFIT
+ | AT91C_UDPHS_CHANN_ENB );
+ }
+#endif
+
+ return USBD_STATUS_SUCCESS;
+}
+
+//------------------------------------------------------------------------------
+/// Put endpoint into Halt state
+/// \param bEndpoint Index of endpoint
+//------------------------------------------------------------------------------
+void USBD_Halt( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+
+ // Check that endpoint is enabled and not already in Halt state
+ if( (pEndpoint->state != UDP_ENDPOINT_DISABLED)
+ && (pEndpoint->state != UDP_ENDPOINT_HALTED) ) {
+
+ TRACE_DEBUG_WP("Halt%d ", bEndpoint);
+
+ // Abort the current transfer if necessary
+ UDPHS_EndOfTransfer(bEndpoint, USBD_STATUS_ABORTED);
+
+ // Put endpoint into Halt state
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTSETSTA = AT91C_UDPHS_FRCESTALL;
+ pEndpoint->state = UDP_ENDPOINT_HALTED;
+
+#ifdef DMA
+ // Test if endpoint type control
+ if(AT91C_UDPHS_EPT_TYPE_CTL_EPT == (AT91C_UDPHS_EPT_TYPE&(AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCFG))) {
+#endif
+ // Enable the endpoint interrupt
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1<<SHIFT_INTERUPT<<bEndpoint);
+#ifdef DMA
+ }
+ else {
+ // Enable IT DMA
+ AT91C_BASE_UDPHS->UDPHS_IEN |= (1<<SHIFT_DMA<<bEndpoint);
+ }
+#endif
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Clears the Halt feature on the given endpoint.
+/// \param bEndpoint Index of endpoint
+//------------------------------------------------------------------------------
+void USBD_Unhalt( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+
+ // Check if the endpoint is enabled
+ if (pEndpoint->state != UDP_ENDPOINT_DISABLED) {
+
+ TRACE_DEBUG_WP("Unhalt%d ", bEndpoint);
+
+ // Return endpoint to Idle state
+ pEndpoint->state = UDP_ENDPOINT_IDLE;
+
+ // Clear FORCESTALL flag
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTCLRSTA = AT91C_UDPHS_TOGGLESQ | AT91C_UDPHS_FRCESTALL;
+
+ // Reset Endpoint Fifos
+ AT91C_BASE_UDPHS->UDPHS_EPTRST = (1<<bEndpoint);
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Returns the current Halt status of an endpoint.
+/// \param bEndpoint Index of endpoint
+/// \return 1 if the endpoint is currently halted; otherwise 0
+//------------------------------------------------------------------------------
+unsigned char USBD_IsHalted( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+ unsigned char status = 0;
+
+ if (pEndpoint->state == UDP_ENDPOINT_HALTED) {
+ status = 1;
+ }
+ return( status );
+}
+
+//------------------------------------------------------------------------------
+/// IS High Speed device working in High Speed ?
+/// \return 1 if the device is in High Speed; otherwise 0 (Full Speed)
+//------------------------------------------------------------------------------
+unsigned char USBD_IsHighSpeed( void )
+{
+ unsigned char status = 0;
+
+ if( AT91C_UDPHS_SPEED == (AT91C_BASE_UDPHS->UDPHS_INTSTA & AT91C_UDPHS_SPEED) )
+ {
+ // High Speed
+ TRACE_DEBUG_WP("High Speed\n\r");
+ status = 1;
+ }
+ else {
+ TRACE_DEBUG_WP("Full Speed\n\r");
+ }
+ return( status );
+}
+
+
+//------------------------------------------------------------------------------
+/// Causes the endpoint to acknowledge the next received packet with a STALL
+/// handshake.
+/// Further packets are then handled normally.
+/// \param bEndpoint Index of endpoint
+/// \return Operation result code: USBD_STATUS_LOCKED or USBD_STATUS_SUCCESS
+//------------------------------------------------------------------------------
+unsigned char USBD_Stall( unsigned char bEndpoint )
+{
+ Endpoint *pEndpoint = &(endpoints[bEndpoint]);
+
+ // Check that endpoint is in Idle state
+ if (pEndpoint->state != UDP_ENDPOINT_IDLE) {
+
+ TRACE_WARNING("UDP_Stall: Endpoint%d locked\n\r", bEndpoint);
+ return USBD_STATUS_LOCKED;
+ }
+
+ TRACE_DEBUG_WP("Stall%d ", bEndpoint);
+
+ AT91C_BASE_UDPHS->UDPHS_EPT[bEndpoint].UDPHS_EPTSETSTA = AT91C_UDPHS_FRCESTALL;
+
+ return USBD_STATUS_SUCCESS;
+}
+
+//------------------------------------------------------------------------------
+/// Activates a remote wakeup procedure
+//------------------------------------------------------------------------------
+void USBD_RemoteWakeUp(void)
+{
+ TRACE_DEBUG_WP("Remote WakeUp\n\r");
+
+ // Device is currently suspended
+ if (deviceState == USBD_STATE_SUSPENDED) {
+
+ TRACE_DEBUG_WP("RW\n\r");
+ UDPHS_EnableUsbClock();
+
+ // Activates a remote wakeup
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= AT91C_UDPHS_REWAKEUP;
+
+ while ((AT91C_BASE_UDPHS->UDPHS_CTRL&AT91C_UDPHS_REWAKEUP) == AT91C_UDPHS_REWAKEUP) {
+
+ TRACE_DEBUG_WP("W");
+ }
+ UDPHS_EnableBIAS();
+ }
+ // Device is NOT suspended
+ else {
+
+ TRACE_WARNING("USBD_RemoteWakeUp: Device is not suspended\n\r");
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Sets the device address
+/// \param address Adress to be set
+//------------------------------------------------------------------------------
+void USBD_SetAddress( unsigned char address )
+{
+ TRACE_DEBUG_WP("SetAddr(%d) ", address);
+
+ // Set address
+ AT91C_BASE_UDPHS->UDPHS_CTRL &= ~AT91C_UDPHS_DEV_ADDR; // RAZ Address
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= address | AT91C_UDPHS_FADDR_EN;
+
+ // If the address is 0, the device returns to the Default state
+ if (address == 0) {
+ deviceState = USBD_STATE_DEFAULT;
+ }
+ // If the address is non-zero, the device enters the Address state
+ else {
+ deviceState = USBD_STATE_ADDRESS;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Changes the device state from Address to Configured, or from Configured
+/// to Address.
+/// This method directly access the last received SETUP packet to decide on
+/// what to do.
+/// \param cfgnum configuration number
+//------------------------------------------------------------------------------
+void USBD_SetConfiguration( unsigned char cfgnum )
+{
+ TRACE_DEBUG_WP("SetCfg(%d) ", cfgnum);
+
+ // Check the request
+ if( cfgnum != 0 ) {
+
+ // Enter Configured state
+ deviceState = USBD_STATE_CONFIGURED;
+ }
+ // If the configuration number is zero, the device goes back to the Address
+ // state
+ else {
+
+ // Go back to Address state
+ deviceState = USBD_STATE_ADDRESS;
+
+ // Abort all transfers
+ UDPHS_DisableEndpoints();
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Enables the pull-up on the D+ line to connect the device to the USB.
+//------------------------------------------------------------------------------
+void USBD_Connect( void )
+{
+ TRACE_DEBUG_WP("Conn ");
+#if defined(BOARD_USB_PULLUP_INTERNAL)
+ AT91C_BASE_UDPHS->UDPHS_CTRL &= ~AT91C_UDPHS_DETACH; // Pull Up on DP
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= AT91C_UDPHS_PULLD_DIS; // Disable Pull Down
+
+#elif defined(BOARD_USB_PULLUP_INTERNAL_BY_MATRIX)
+ TRACE_DEBUG_WP("PUON 1\n\r");
+ AT91C_BASE_MATRIX->MATRIX_USBPCR |= AT91C_MATRIX_USBPCR_PUON;
+
+#elif defined(BOARD_USB_PULLUP_EXTERNAL)
+
+#ifdef PIN_USB_PULLUP
+ const Pin pinPullUp = PIN_USB_PULLUP;
+ if( pinPullUp.attribute == PIO_OUTPUT_0 ) {
+
+ PIO_Set(&pinPullUp);
+ }
+ else {
+
+ PIO_Clear(&pinPullUp);
+ }
+#else
+ #error unsupported now
+#endif
+
+#elif !defined(BOARD_USB_PULLUP_ALWAYSON)
+ #error Unsupported pull-up type.
+
+#endif
+}
+
+//------------------------------------------------------------------------------
+/// Disables the pull-up on the D+ line to disconnect the device from the bus.
+//------------------------------------------------------------------------------
+void USBD_Disconnect( void )
+{
+ TRACE_DEBUG_WP("Disc ");
+
+#if defined(BOARD_USB_PULLUP_INTERNAL)
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= AT91C_UDPHS_DETACH; // detach
+ AT91C_BASE_UDPHS->UDPHS_CTRL &= ~AT91C_UDPHS_PULLD_DIS; // Enable Pull Down
+
+#elif defined(BOARD_USB_PULLUP_INTERNAL_BY_MATRIX)
+ AT91C_BASE_MATRIX->MATRIX_USBPCR &= ~AT91C_MATRIX_USBPCR_PUON;
+
+#elif defined(BOARD_USB_PULLUP_EXTERNAL)
+
+#ifdef PIN_USB_PULLUP
+ const Pin pinPullUp = PIN_USB_PULLUP;
+ if (pinPullUp.attribute == PIO_OUTPUT_0) {
+
+ PIO_Clear(&pinPullUp);
+ }
+ else {
+
+ PIO_Set(&pinPullUp);
+ }
+#else
+ #error unsupported now
+#endif
+
+#elif !defined(BOARD_USB_PULLUP_ALWAYSON)
+ #error Unsupported pull-up type.
+
+#endif
+
+ // Device returns to the Powered state
+ if (deviceState > USBD_STATE_POWERED) {
+
+ deviceState = USBD_STATE_POWERED;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Certification test for High Speed device.
+/// \param bIndex Test to be done
+//------------------------------------------------------------------------------
+void USBD_Test( unsigned char bIndex )
+{
+ char *pFifo;
+ unsigned char i;
+
+ AT91C_BASE_UDPHS->UDPHS_IEN &= ~AT91C_UDPHS_DET_SUSPD; // remove suspend for TEST
+ AT91C_BASE_UDPHS->UDPHS_TST |= AT91C_UDPHS_SPEED_CFG_HS; // force High Speed (remove suspend)
+
+ switch( bIndex ) {
+
+ case USBFeatureRequest_TESTPACKET:
+ TRACE_DEBUG_WP("TEST_PACKET ");
+
+ AT91C_BASE_UDPHS->UDPHS_DMA[1].UDPHS_DMACONTROL = 0;
+ AT91C_BASE_UDPHS->UDPHS_DMA[2].UDPHS_DMACONTROL = 0;
+
+ // Configure endpoint 2, 64 bytes, direction IN, type BULK, 1 bank
+ AT91C_BASE_UDPHS->UDPHS_EPT[2].UDPHS_EPTCFG = AT91C_UDPHS_EPT_SIZE_64 | AT91C_UDPHS_EPT_DIR_IN | AT91C_UDPHS_EPT_TYPE_BUL_EPT | AT91C_UDPHS_BK_NUMBER_1;
+ while( (signed int)(AT91C_BASE_UDPHS->UDPHS_EPT[2].UDPHS_EPTCFG & AT91C_UDPHS_EPT_MAPD) != (signed int)AT91C_UDPHS_EPT_MAPD ) {}
+
+ AT91C_BASE_UDPHS->UDPHS_EPT[2].UDPHS_EPTCTLENB = AT91C_UDPHS_EPT_ENABL;
+
+ // Write FIFO
+ pFifo = (char*)((unsigned int *)(AT91C_BASE_UDPHS_EPTFIFO->UDPHS_READEPT0) + (16384 * 2));
+ for( i=0; i<sizeof(test_packet_buffer); i++) {
+ pFifo[i] = test_packet_buffer[i];
+ }
+ // Tst PACKET
+ AT91C_BASE_UDPHS->UDPHS_TST |= AT91C_UDPHS_TST_PKT;
+ // Send packet
+ AT91C_BASE_UDPHS->UDPHS_EPT[2].UDPHS_EPTSETSTA = AT91C_UDPHS_TX_PK_RDY;
+ break;
+
+ case USBFeatureRequest_TESTJ:
+ TRACE_DEBUG_WP("TEST_J ");
+ AT91C_BASE_UDPHS->UDPHS_TST = AT91C_UDPHS_TST_J;
+ break;
+
+ case USBFeatureRequest_TESTK:
+ TRACE_DEBUG_WP("TEST_K ");
+ AT91C_BASE_UDPHS->UDPHS_TST = AT91C_UDPHS_TST_K;
+ break;
+
+ case USBFeatureRequest_TESTSE0NAK:
+ TRACE_DEBUG_WP("TEST_SEO_NAK ");
+ AT91C_BASE_UDPHS->UDPHS_IEN = 0; // for test
+ break;
+
+ case USBFeatureRequest_TESTSENDZLP:
+ //while( 0 != (AT91C_BASE_UDPHS->UDPHS_EPT[0].UDPHS_EPTSTA & AT91C_UDPHS_TX_PK_RDY ) ) {}
+ AT91C_BASE_UDPHS->UDPHS_EPT[0].UDPHS_EPTSETSTA = AT91C_UDPHS_TX_PK_RDY;
+ //while( 0 != (AT91C_BASE_UDPHS->UDPHS_EPT[0].UDPHS_EPTSTA & AT91C_UDPHS_TX_PK_RDY ) ) {}
+ TRACE_DEBUG_WP("SEND_ZLP ");
+ break;
+ }
+ TRACE_DEBUG_WP("\n\r");
+}
+
+
+//------------------------------------------------------------------------------
+/// Initializes the specified USB driver
+/// This function initializes the current FIFO bank of endpoints,
+/// configures the pull-up and VBus lines, disconnects the pull-up and
+/// then trigger the Init callback.
+//------------------------------------------------------------------------------
+void USBD_Init( void )
+{
+ unsigned char i;
+
+ TRACE_DEBUG_WP("USBD Init()\n\r");
+
+ // Reset endpoint structures
+ UDPHS_ResetEndpoints();
+
+ // Enables the USB Clock
+ UDPHS_EnableUsbClock();
+
+ // Configure the pull-up on D+ and disconnect it
+#if defined(BOARD_USB_PULLUP_INTERNAL)
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= AT91C_UDPHS_DETACH; // detach
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= AT91C_UDPHS_PULLD_DIS; // Disable Pull Down
+
+#elif defined(BOARD_USB_PULLUP_INTERNAL_BY_MATRIX)
+ TRACE_DEBUG_WP("PUON 0\n\r");
+ AT91C_BASE_MATRIX->MATRIX_USBPCR &= ~AT91C_MATRIX_USBPCR_PUON;
+
+#elif defined(BOARD_USB_PULLUP_EXTERNAL)
+#ifdef PIN_USB_PULLUP
+ const Pin pinPullUp = PIN_USB_PULLUP;
+ PIO_Configure(&pinPullUp, 1);
+ if (pinPullUp.attribute == PIO_OUTPUT_0) {
+
+ PIO_Clear(&pinPullUp);
+ }
+ else {
+
+ PIO_Set(&pinPullUp);
+ }
+#else
+ #error unsupported now
+#endif
+#elif !defined(BOARD_USB_PULLUP_ALWAYSON)
+ #error Unsupported pull-up type.
+
+#endif
+
+ // Reset and enable IP UDPHS
+ AT91C_BASE_UDPHS->UDPHS_CTRL &= ~AT91C_UDPHS_EN_UDPHS;
+ AT91C_BASE_UDPHS->UDPHS_CTRL |= AT91C_UDPHS_EN_UDPHS;
+ // Enable and disable of the transceiver is automaticaly done by the IP.
+
+ // With OR without DMA !!!
+ // Initialization of DMA
+ for( i=1; i<=((AT91C_BASE_UDPHS->UDPHS_IPFEATURES & AT91C_UDPHS_DMA_CHANNEL_NBR)>>4); i++ ) {
+
+ // RESET endpoint canal DMA:
+ // DMA stop channel command
+ AT91C_BASE_UDPHS->UDPHS_DMA[i].UDPHS_DMACONTROL = 0; // STOP command
+
+ // Disable endpoint
+ AT91C_BASE_UDPHS->UDPHS_EPT[i].UDPHS_EPTCTLDIS = AT91C_UDPHS_SHRT_PCKT
+ | AT91C_UDPHS_BUSY_BANK
+ | AT91C_UDPHS_NAK_OUT
+ | AT91C_UDPHS_NAK_IN
+ | AT91C_UDPHS_STALL_SNT
+ | AT91C_UDPHS_RX_SETUP
+ | AT91C_UDPHS_TX_PK_RDY
+ | AT91C_UDPHS_TX_COMPLT
+ | AT91C_UDPHS_RX_BK_RDY
+ | AT91C_UDPHS_ERR_OVFLW
+ | AT91C_UDPHS_MDATA_RX
+ | AT91C_UDPHS_DATAX_RX
+ | AT91C_UDPHS_NYET_DIS
+ | AT91C_UDPHS_INTDIS_DMA
+ | AT91C_UDPHS_AUTO_VALID
+ | AT91C_UDPHS_EPT_DISABL;
+
+ // Clear status endpoint
+ AT91C_BASE_UDPHS->UDPHS_EPT[i].UDPHS_EPTCLRSTA = AT91C_UDPHS_TOGGLESQ
+ | AT91C_UDPHS_FRCESTALL
+ | AT91C_UDPHS_RX_BK_RDY
+ | AT91C_UDPHS_TX_COMPLT
+ | AT91C_UDPHS_RX_SETUP
+ | AT91C_UDPHS_STALL_SNT
+ | AT91C_UDPHS_NAK_IN
+ | AT91C_UDPHS_NAK_OUT;
+
+ // Reset endpoint config
+ AT91C_BASE_UDPHS->UDPHS_EPT[i].UDPHS_EPTCTLENB = 0;
+
+ // Reset DMA channel (Buff count and Control field)
+ AT91C_BASE_UDPHS->UDPHS_DMA[i].UDPHS_DMACONTROL = AT91C_UDPHS_LDNXT_DSC; // NON STOP command
+
+ // Reset DMA channel 0 (STOP)
+ AT91C_BASE_UDPHS->UDPHS_DMA[i].UDPHS_DMACONTROL = 0; // STOP command
+
+ // Clear DMA channel status (read the register for clear it)
+ AT91C_BASE_UDPHS->UDPHS_DMA[i].UDPHS_DMASTATUS = AT91C_BASE_UDPHS->UDPHS_DMA[i].UDPHS_DMASTATUS;
+
+ }
+
+ AT91C_BASE_UDPHS->UDPHS_TST = 0;
+ AT91C_BASE_UDPHS->UDPHS_IEN = 0;
+ AT91C_BASE_UDPHS->UDPHS_CLRINT = AT91C_UDPHS_UPSTR_RES
+ | AT91C_UDPHS_ENDOFRSM
+ | AT91C_UDPHS_WAKE_UP
+ | AT91C_UDPHS_ENDRESET
+ | AT91C_UDPHS_IEN_SOF
+ | AT91C_UDPHS_MICRO_SOF
+ | AT91C_UDPHS_DET_SUSPD;
+
+ // Device is in the Attached state
+ deviceState = USBD_STATE_SUSPENDED;
+ previousDeviceState = USBD_STATE_POWERED;
+
+ // Disable interrupts
+ AT91C_BASE_UDPHS->UDPHS_IEN = AT91C_UDPHS_ENDOFRSM
+ | AT91C_UDPHS_WAKE_UP
+ | AT91C_UDPHS_DET_SUSPD;
+
+ // Disable USB clocks
+ UDPHS_DisableUsbClock();
+
+ // Configure interrupts
+ USBDCallbacks_Initialized();
+}
+
+//------------------------------------------------------------------------------
+/// Returns the current state of the USB device.
+/// \return Device current state.
+//------------------------------------------------------------------------------
+unsigned char USBD_GetState( void )
+{
+ return deviceState;
+}
+
+#endif // BOARD_USB_UDPHS
+
|