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461 lines
12 KiB
C
461 lines
12 KiB
C
/*
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Copyright (c) 2012 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "chip.h"
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#if 0 //SAM3U_SERIES
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#include "USB_driver.h"
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#include "udphs.h"
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/// Max size of the FMA FIFO
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#define EPT_VIRTUAL_SIZE (16384u)
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#define SHIFT_INTERUPT (8u)
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int _cmark;
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int _cend;
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// Global variable for endpoint number
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unsigned int NumEndpoint=0;
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void USBD_WaitIN(void)
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{
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// while (!(UEINTX & (1<<TXINI)));
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while (!(UDPHS->UDPHS_EPT[0].UDPHS_EPTSTA & UDPHS_EPTSTA_TX_PK_RDY));
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}
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void USBD_WaitOUT(void)
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{
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// while (!(UEINTX & (1<<RXOUTI)))
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// ;
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// Waiting for Status stage
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while (UDPHS_EPTSTA_RX_BK_RDY != (UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & UDPHS_EPTSTA_RX_BK_RDY));
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}
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void USBD_ClearIN(void)
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{
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// UEINTX = ~(1<<TXINI);
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UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTCLRSTA = UDPHS_EPTCLRSTA_TX_COMPLT;
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}
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void USBD_ClearOUT(void)
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{
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// UEINTX = ~(1<<RXOUTI);
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UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTCLRSTA = UDPHS_EPTCLRSTA_RX_BK_RDY;
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}
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uint8_t USBD_WaitForINOrOUT(void)
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{
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// while (!(UEINTX & ((1<<TXINI)|(1<<RXOUTI))))
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// ;
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// return (UEINTX & (1<<RXOUTI)) == 0;
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while (!(UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & (UDPHS_EPTSTA_RX_BK_RDY | UDPHS_EPTSTA_TX_PK_RDY)));
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return (UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & UDPHS_EPTSTA_RX_BK_RDY) == 0;
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}
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void USBD_ClearRxFlag(unsigned char bEndpoint)
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{
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UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTCLRSTA = UDPHS_EPTCLRSTA_RX_BK_RDY;
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}
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void USBD_Stall(void)
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{
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// UECONX = (1<<STALLRQ) | (1<<EPEN);
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UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSETSTA = UDPHS_EPTSETSTA_FRCESTALL;
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}
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uint8_t USBD_Stalled(void)
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{
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// return UEINTX & (1<<STALLEDI);
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// Check if the data has been STALLed
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return ( UDPHS_EPTSTA_FRCESTALL == (UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & UDPHS_EPTSTA_FRCESTALL));
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}
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uint8_t USBD_ReceivedSetupInt(void)
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{
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// return UEINTX & (1<<RXSTPI);
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return ( UDPHS_EPTSTA_RX_SETUP == (UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & UDPHS_EPTSTA_RX_SETUP) );
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}
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void USBD_ClearSetupInt(void)
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{
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// UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
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UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTCLRSTA = UDPHS_EPTSTA_RX_SETUP | UDPHS_EPTCLRSTA_RX_BK_RDY | UDPHS_EPTCLRSTA_TX_COMPLT;
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}
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uint8_t USBD_ReadWriteAllowed(void)
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{
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//return UEINTX & (1<<RWAL);
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return 1;
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}
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void USBD_SetEP(uint8_t ep)
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{
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// UENUM = ep;
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NumEndpoint = ep & 7;
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}
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uint16_t USBD_FifoByteCount(void)
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{
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// return UEBCLX;
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// SAM3X
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//return ((UOTGHS->UOTGHS_DEVEPTISR[ep] & UOTGHS_DEVEPTISR_BYCT_Msk) >> UOTGHS_DEVEPTISR_BYCT_Pos);
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// SAM3U //AT91C_UDPHS_BYTE_COUNT (0x7FF << 20)
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return ((UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & UDPHS_EPTSTA_BYTE_COUNT_Msk) >> UDPHS_EPTSTA_BYTE_COUNT_Pos);
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}
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uint8_t USBD_FifoFree(void)
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{
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// return UEINTX & (1<<FIFOCON);
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return( 0 != (UDPHS->UDPHS_EPT[NumEndpoint].UDPHS_EPTSTA & UDPHS_EPTSTA_TX_PK_RDY ));
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}
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void USBD_ReleaseRX(void)
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{
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UEINTX = 0x6B; // FIFOCON=0 NAKINI=1 RWAL=1 NAKOUTI=0 RXSTPI=1 RXOUTI=0 STALLEDI=1 TXINI=1
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}
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void USBD_ReleaseTX()
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{
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UEINTX = 0x3A; // FIFOCON=0 NAKINI=0 RWAL=1 NAKOUTI=1 RXSTPI=1 RXOUTI=0 STALLEDI=1 TXINI=0
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}
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uint8_t USBD_FrameNumber(void)
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{
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return UDFNUML;
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}
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uint8_t USBD_GetConfiguration(void)
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{
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return _usbConfiguration;
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}
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void USBD_Recv(volatile uint8_t* data, uint8_t count)
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{
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uint8_t *pFifo;
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pFifo = (uint8_t*)((uint32_t *)UDPHS_RAM_ADDR + (EPT_VIRTUAL_SIZE * NumEndpoint));
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while (count--)
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{
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*data++ = pFifo[0];
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}
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// RXLED1; // light the RX LED
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// RxLEDPulse = TX_RX_LED_PULSE_MS;
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}
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uint8_t USBD_Recv8(void)
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{
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uint8_t *pFifo;
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// RXLED1; // light the RX LED
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// RxLEDPulse = TX_RX_LED_PULSE_MS;
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pFifo = (uint8_t*)((uint32_t *)UDPHS_RAM_ADDR + (EPT_VIRTUAL_SIZE * NumEndpoint));
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// return UEDATX;
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return (pFifo[0]);
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}
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void USBD_Send8(uint8_t d)
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{
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uint8_t *pFifo;
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pFifo = (uint8_t*)((uint32_t *)UDPHS_RAM_ADDR + (EPT_VIRTUAL_SIZE * NumEndpoint));
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// UEDATX = d;
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pFifo[0] =d;
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}
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// Blocking Send of data to an endpoint
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int USBD_Send(uint8_t ep, const void* d, int len)
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{
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if (!_usbConfiguration)
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return -1;
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int r = len;
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const uint8_t* data = (const uint8_t*)d;
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uint8_t zero = ep & TRANSFER_ZERO;
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uint8_t timeout = 250; // 250ms timeout on send? TODO
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while (len)
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{
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uint8_t n = USB_SendSpace(ep);
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if (n == 0)
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{
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if (!(--timeout))
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return -1;
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delay(1);
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continue;
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}
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if (n > len)
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n = len;
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len -= n;
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{
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SetEP(ep);
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if (ep & TRANSFER_ZERO)
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{
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while (n--)
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Send8(0);
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}
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else if (ep & TRANSFER_PGM)
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{
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while (n--)
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Send8(*data++);
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}
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else
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{
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while (n--)
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Send8(*data++);
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}
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// if (!ReadWriteAllowed() || ((len == 0) && (ep & TRANSFER_RELEASE))) // Release full buffer
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// ReleaseTX();
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}
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}
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TXLED1; // light the TX LED
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TxLEDPulse = TX_RX_LED_PULSE_MS;
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return r;
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}
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// Space in send EP
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uint8_t USBD_SendSpace(uint8_t ep)
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{
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SetEP(ep);
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if (!ReadWriteAllowed())
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{
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return 0;
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}
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return 64 - FifoByteCount();
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}
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// Number of bytes, assumes a rx endpoint
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uint8_t USBD_Available(uint8_t ep)
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{
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SetEP(ep);
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return FifoByteCount();
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}
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void USBD_InitEP(uint8_t index, uint8_t type, uint8_t size)
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{
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UENUM = index;
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UECONX = 1;
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UECFG0X = type;
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UECFG1X = size;
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}
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void USBD_InitEndpoints(void)
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{
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for (uint8_t i = 1; i < sizeof(_initEndpoints); i++)
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{
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// Reset Endpoint Fifos
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UDPHS->UDPHS_EPT[i].UDPHS_EPTCLRSTA = UDPHS_EPTCLRSTA_TOGGLESQ | UDPHS_EPTCLRSTA_FRCESTALL;
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UDPHS->UDPHS_EPTRST = 1<<i;
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//UECONX = 1;
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//UECFG0X = pgm_read_byte(_initEndpoints+i);
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UDPHS->UDPHS_EPT[i].UDPHS_EPTCFG = _initEndpoints[i];
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while( (signed int)UDPHS_EPTCFG_EPT_MAPD != (signed int)((UDPHS->UDPHS_EPT[i].UDPHS_EPTCFG) & (unsigned int)UDPHS_EPTCFG_EPT_MAPD) )
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;
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UDPHS->UDPHS_EPT[i].UDPHS_EPTCTLENB = UDPHS_EPTCTLENB_EPT_ENABL;
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// UECFG1X = EP_DOUBLE_64;
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}
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///\// UERST = 0x7E; // And reset them
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///\// UERST = 0;
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}
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void USBD_InitControl(int end)
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{
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SetEP(0);
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UDPHS->UDPHS_EPT[0].UDPHS_EPTCFG = _initEndpoints[0];
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while( (signed int)UDPHS_EPTCFG_EPT_MAPD != (signed int)((UDPHS->UDPHS_EPT[0].UDPHS_EPTCFG) & (unsigned int)UDPHS_EPTCFG_EPT_MAPD) )
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;
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UDPHS->UDPHS_EPT[0].UDPHS_EPTCTLENB = UDPHS_EPTCTLENB_RX_BK_RDY
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| UDPHS_EPTCTLENB_RX_SETUP
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| UDPHS_EPTCTLENB_EPT_ENABL;
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_cmark = 0;
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_cend = end;
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}
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void UDPHS_Handler( void )
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{
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unsigned int status;
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unsigned char numIT;
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// Get interrupts status
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status = UDPHS->UDPHS_INTSTA & UDPHS->UDPHS_IEN;
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// Handle all UDPHS interrupts
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while (status != 0) {
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// Start of Frame - happens every millisecond so we use it for TX and RX LED one-shot timing, too
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if ((status & UDPHS_IEN_INT_SOF) != 0) {
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#ifdef CDC_ENABLED
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USB_Flush(CDC_TX); // Send a tx frame if found
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#endif
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// check whether the one-shot period has elapsed. if so, turn off the LED
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if (TxLEDPulse && !(--TxLEDPulse))
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TXLED0;
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if (RxLEDPulse && !(--RxLEDPulse))
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RXLED0;
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// Acknowledge interrupt
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_INT_SOF;
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status &= ~UDPHS_IEN_INT_SOF;
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}
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// Suspend
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// This interrupt is always treated last (hence the '==')
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else if (status == UDPHS_IEN_DET_SUSPD) {
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//UDPHS_DisableBIAS();
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// Enable wakeup
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UDPHS->UDPHS_IEN |= UDPHS_IEN_WAKE_UP | UDPHS_IEN_ENDOFRSM;
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UDPHS->UDPHS_IEN &= ~UDPHS_IEN_DET_SUSPD;
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// Acknowledge interrupt
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_DET_SUSPD | UDPHS_CLRINT_WAKE_UP;
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//UDPHS_DisableUsbClock();
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}
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// Resume
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else if( ((status & UDPHS_IEN_WAKE_UP) != 0) // line activity
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|| ((status & UDPHS_IEN_ENDOFRSM) != 0)) { // pc wakeup
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{
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//UDPHS_EnableUsbClock();
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//UDPHS_EnableBIAS();
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_WAKE_UP | UDPHS_CLRINT_ENDOFRSM
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| UDPHS_CLRINT_DET_SUSPD;
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UDPHS->UDPHS_IEN |= UDPHS_IEN_ENDOFRSM | UDPHS_IEN_DET_SUSPD;
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_WAKE_UP | UDPHS_CLRINT_ENDOFRSM;
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UDPHS->UDPHS_IEN &= ~UDPHS_IEN_WAKE_UP;
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}
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}
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// End of Reset
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else if ((status & UDPHS_IEN_ENDRESET) == UDPHS_IEN_ENDRESET) {
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InitControl(0); // init ep0
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_usbConfiguration = 0; // not configured yet
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//UEIENX = 1 << RXSTPE; // Enable interrupts for ep0
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//UDPHS_ResetEndpoints();
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//UDPHS_DisableEndpoints();
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//USBD_ConfigureEndpoint(0);
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UDPHS->UDPHS_IEN |= (1<<SHIFT_INTERUPT<<0);
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// Flush and enable the Suspend interrupt
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_WAKE_UP | UDPHS_CLRINT_DET_SUSPD;
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//// Enable the Start Of Frame (SOF) interrupt if needed
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UDPHS->UDPHS_IEN |= UDPHS_IEN_INT_SOF;
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// Acknowledge end of bus reset interrupt
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_ENDRESET;
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UDPHS->UDPHS_IEN |= UDPHS_IEN_DET_SUSPD;
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}
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// Handle upstream resume interrupt
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else if (status & UDPHS_IEN_UPSTR_RES) {
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// - Acknowledge the IT
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_UPSTR_RES;
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}
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// Endpoint interrupts
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else {
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// Handle endpoint interrupts
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for (numIT = 0; numIT < NUM_IT_MAX; numIT++) {
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if ((status & (1 << SHIFT_INTERUPT << numIT)) != 0) {
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USB_ISR();
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//EndpointHandler(numIT); // TODO: interrupt for bulk
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}
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}
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}
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// Retrieve new interrupt status
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status = UDPHS->UDPHS_INTSTA & UDPHS->UDPHS_IEN;
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}
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}
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void USBD_Attach( void )
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{/*
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_usbConfiguration = 0;
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//UHWCON = 0x01; // power internal reg
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//USBCON = (1<<USBE)|(1<<FRZCLK); // clock frozen, usb enabled
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//PLLCSR = 0x12; // Need 16 MHz xtal
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//while (!(PLLCSR & (1<<PLOCK))) // wait for lock pll
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// ;
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PMC->PMC_PCER = (1 << ID_UDPHS);
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// Enable 480MHZ
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//AT91C_BASE_CKGR->CKGR_UCKR |= (AT91C_CKGR_PLLCOUNT & (3 << 20)) | AT91C_CKGR_UPLLEN;
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CKGR->CKGR_UCKR |= ((0xf << 20) & (3 << 20)) | AT91C_CKGR_UPLLEN;
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// Wait until UTMI PLL is locked
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while ((PMC->PMC_SR & PMC_LOCKU) == 0);
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// Reset and enable IP UDPHS
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UDPHS->UDPHS_CTRL &= ~UDPHS_CTRL_EN_UDPHS;
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UDPHS->UDPHS_CTRL |= UDPHS_CTRL_EN_UDPHS;
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//USBCON = ((1<<USBE)|(1<<OTGPADE)); // start USB clock
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UDPHS->UDPHS_IEN = 0;
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UDPHS->UDPHS_CLRINT = UDPHS_CLRINT_UPSTR_RES
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| UDPHS_CLRINT_ENDOFRSM
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| UDPHS_CLRINT_WAKE_UP
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| UDPHS_CLRINT_ENDRESET
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| UDPHS_CLRINT_INT_SOF
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| UDPHS_CLRINT_MICRO_SOF
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| UDPHS_CLRINT_DET_SUSPD;
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// Enable interrupts for EOR (End of Reset), wake up and SOF (start of frame)
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//UDIEN = (1<<EORSTE)|(1<<SOFE);
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UDPHS->UDPHS_IEN = UDPHS_IEN_ENDOFRSM
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| UDPHS_IEN_WAKE_UP
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| UDPHS_IEN_DET_SUSPD;
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// enable attach resistor
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//UDCON = 0;
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UDPHS->UDPHS_CTRL &= ~UDPHS_CTRL_DETACH; // Pull Up on DP
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UDPHS->UDPHS_CTRL |= UDPHS_CTRL_PULLD_DIS; // Disable Pull Down
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TX_RX_LED_INIT;
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*/}
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void USBD_Detach( void )
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{
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UDPHS->UDPHS_CTRL |= UDPHS_CTRL_DETACH; // detach
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UDPHS->UDPHS_CTRL &= ~UDPHS_CTRL_PULLD_DIS; // Enable Pull Down
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}
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#endif /* SAM3U_SERIES */
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