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-rw-r--r--cores/arduino/USBCore.cpp834
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diff --git a/cores/arduino/USBCore.cpp b/cores/arduino/USBCore.cpp
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index b384984..0000000
--- a/cores/arduino/USBCore.cpp
+++ /dev/null
@@ -1,834 +0,0 @@
-
-
-/* Copyright (c) 2010, Peter Barrett
-** Sleep/Wakeup support added by Michael Dreher
-**
-** Permission to use, copy, modify, and/or distribute this software for
-** any purpose with or without fee is hereby granted, provided that the
-** above copyright notice and this permission notice appear in all copies.
-**
-** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
-** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
-** BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
-** OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-** WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-** ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-** SOFTWARE.
-*/
-
-#include "USBAPI.h"
-#include "PluggableUSB.h"
-#include <stdlib.h>
-
-#if defined(USBCON)
-
-/** Pulse generation counters to keep track of the number of milliseconds remaining for each pulse type */
-#define TX_RX_LED_PULSE_MS 100
-volatile u8 TxLEDPulse; /**< Milliseconds remaining for data Tx LED pulse */
-volatile u8 RxLEDPulse; /**< Milliseconds remaining for data Rx LED pulse */
-
-//==================================================================
-//==================================================================
-
-extern const u16 STRING_LANGUAGE[] PROGMEM;
-extern const u8 STRING_PRODUCT[] PROGMEM;
-extern const u8 STRING_MANUFACTURER[] PROGMEM;
-
-const u16 STRING_LANGUAGE[2] = {
- (3<<8) | (2+2),
- 0x0409 // English
-};
-
-#ifndef USB_PRODUCT
-// If no product is provided, use USB IO Board
-#define USB_PRODUCT "USB IO Board"
-#endif
-
-const u8 STRING_PRODUCT[] PROGMEM = USB_PRODUCT;
-
-#if USB_VID == 0x2341
-# if defined(USB_MANUFACTURER)
-# undef USB_MANUFACTURER
-# endif
-# define USB_MANUFACTURER "Arduino LLC"
-#elif USB_VID == 0x1b4f
-# if defined(USB_MANUFACTURER)
-# undef USB_MANUFACTURER
-# endif
-# define USB_MANUFACTURER "SparkFun"
-#elif !defined(USB_MANUFACTURER)
-// Fall through to unknown if no manufacturer name was provided in a macro
-# define USB_MANUFACTURER "Unknown"
-#endif
-
-const u8 STRING_MANUFACTURER[] PROGMEM = USB_MANUFACTURER;
-
-//==================================================================
-//==================================================================
-
-volatile u8 _usbConfiguration = 0;
-volatile u8 _usbCurrentStatus = 0; // meaning of bits see usb_20.pdf, Figure 9-4. Information Returned by a GetStatus() Request to a Device
-volatile u8 _usbSuspendState = 0; // copy of UDINT to check SUSPI and WAKEUPI bits
-
-static inline void WaitIN(void)
-{
- while (!(UEINTX & (1<<TXINI)))
- ;
-}
-
-static inline void ClearIN(void)
-{
- UEINTX = ~(1<<TXINI);
-}
-
-static inline void WaitOUT(void)
-{
- while (!(UEINTX & (1<<RXOUTI)))
- ;
-}
-
-static inline u8 WaitForINOrOUT()
-{
- while (!(UEINTX & ((1<<TXINI)|(1<<RXOUTI))))
- ;
- return (UEINTX & (1<<RXOUTI)) == 0;
-}
-
-static inline void ClearOUT(void)
-{
- UEINTX = ~(1<<RXOUTI);
-}
-
-static inline void Recv(volatile u8* data, u8 count)
-{
- while (count--)
- *data++ = UEDATX;
-
- RXLED1; // light the RX LED
- RxLEDPulse = TX_RX_LED_PULSE_MS;
-}
-
-static inline u8 Recv8()
-{
- RXLED1; // light the RX LED
- RxLEDPulse = TX_RX_LED_PULSE_MS;
-
- return UEDATX;
-}
-
-static inline void Send8(u8 d)
-{
- UEDATX = d;
-}
-
-static inline void SetEP(u8 ep)
-{
- UENUM = ep;
-}
-
-static inline u8 FifoByteCount()
-{
- return UEBCLX;
-}
-
-static inline u8 ReceivedSetupInt()
-{
- return UEINTX & (1<<RXSTPI);
-}
-
-static inline void ClearSetupInt()
-{
- UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
-}
-
-static inline void Stall()
-{
- UECONX = (1<<STALLRQ) | (1<<EPEN);
-}
-
-static inline u8 ReadWriteAllowed()
-{
- return UEINTX & (1<<RWAL);
-}
-
-static inline u8 Stalled()
-{
- return UEINTX & (1<<STALLEDI);
-}
-
-static inline u8 FifoFree()
-{
- return UEINTX & (1<<FIFOCON);
-}
-
-static inline void ReleaseRX()
-{
- UEINTX = 0x6B; // FIFOCON=0 NAKINI=1 RWAL=1 NAKOUTI=0 RXSTPI=1 RXOUTI=0 STALLEDI=1 TXINI=1
-}
-
-static inline void ReleaseTX()
-{
- UEINTX = 0x3A; // FIFOCON=0 NAKINI=0 RWAL=1 NAKOUTI=1 RXSTPI=1 RXOUTI=0 STALLEDI=1 TXINI=0
-}
-
-static inline u8 FrameNumber()
-{
- return UDFNUML;
-}
-
-//==================================================================
-//==================================================================
-
-u8 USBGetConfiguration(void)
-{
- return _usbConfiguration;
-}
-
-#define USB_RECV_TIMEOUT
-class LockEP
-{
- u8 _sreg;
-public:
- LockEP(u8 ep) : _sreg(SREG)
- {
- cli();
- SetEP(ep & 7);
- }
- ~LockEP()
- {
- SREG = _sreg;
- }
-};
-
-// Number of bytes, assumes a rx endpoint
-u8 USB_Available(u8 ep)
-{
- LockEP lock(ep);
- return FifoByteCount();
-}
-
-// Non Blocking receive
-// Return number of bytes read
-int USB_Recv(u8 ep, void* d, int len)
-{
- if (!_usbConfiguration || len < 0)
- return -1;
-
- LockEP lock(ep);
- u8 n = FifoByteCount();
- len = min(n,len);
- n = len;
- u8* dst = (u8*)d;
- while (n--)
- *dst++ = Recv8();
- if (len && !FifoByteCount()) // release empty buffer
- ReleaseRX();
-
- return len;
-}
-
-// Recv 1 byte if ready
-int USB_Recv(u8 ep)
-{
- u8 c;
- if (USB_Recv(ep,&c,1) != 1)
- return -1;
- return c;
-}
-
-// Space in send EP
-u8 USB_SendSpace(u8 ep)
-{
- LockEP lock(ep);
- if (!ReadWriteAllowed())
- return 0;
- return USB_EP_SIZE - FifoByteCount();
-}
-
-// Blocking Send of data to an endpoint
-int USB_Send(u8 ep, const void* d, int len)
-{
- if (!_usbConfiguration)
- return -1;
-
- if (_usbSuspendState & (1<<SUSPI)) {
- //send a remote wakeup
- UDCON |= (1 << RMWKUP);
- }
-
- int r = len;
- const u8* data = (const u8*)d;
- u8 timeout = 250; // 250ms timeout on send? TODO
- bool sendZlp = false;
-
- while (len || sendZlp)
- {
- u8 n = USB_SendSpace(ep);
- if (n == 0)
- {
- if (!(--timeout))
- return -1;
- delay(1);
- continue;
- }
-
- if (n > len) {
- n = len;
- }
-
- {
- LockEP lock(ep);
- // Frame may have been released by the SOF interrupt handler
- if (!ReadWriteAllowed())
- continue;
-
- len -= n;
- if (ep & TRANSFER_ZERO)
- {
- while (n--)
- Send8(0);
- }
- else if (ep & TRANSFER_PGM)
- {
- while (n--)
- Send8(pgm_read_byte(data++));
- }
- else
- {
- while (n--)
- Send8(*data++);
- }
-
- if (sendZlp) {
- ReleaseTX();
- sendZlp = false;
- } else if (!ReadWriteAllowed()) { // ...release if buffer is full...
- ReleaseTX();
- if (len == 0) sendZlp = true;
- } else if ((len == 0) && (ep & TRANSFER_RELEASE)) { // ...or if forced with TRANSFER_RELEASE
- // XXX: TRANSFER_RELEASE is never used can be removed?
- ReleaseTX();
- }
- }
- }
- TXLED1; // light the TX LED
- TxLEDPulse = TX_RX_LED_PULSE_MS;
- return r;
-}
-
-#define EP_SINGLE_64 0x32 // EP0
-#define EP_DOUBLE_64 0x36 // Other endpoints
-#define EP_SINGLE_16 0x12
-
-static inline
-u8 BankSizeMask(const uint8_t nbytes)
-{
- uint8_t mask = 0;
- for (uint8_t size = 8; size < 64; size <<= 1) {
- if (nbytes <= size) break;
- mask++;
- }
-
- return (mask << EPSIZE0);
-}
-
-static inline
-void InitEP(u8 index, u8 type, u8 size)
-{
- UENUM = index; // Select endpoint
- UECONX = (1<<EPEN); // Enable endpoint
- UECFG0X = type; // Direction and transmission type
- UECFG1X = size; // Memory allocation, # of data banks, and bank size
-}
-
-static inline
-bool InitEPSize(const u8 index, const u8 type, const u8 nbanks, const u8 banksize)
-{
- if (index >= USB_ENDPOINTS) return false;
- uint8_t size = ((1 << ALLOC) | ((nbanks > 1) ? (1 << EPBK0) : 0) | BankSizeMask(banksize));
- InitEP(index, type, size);
- return UESTA0X & (1 << CFGOK); // Success
-}
-
-static
-void InitEndpoints()
-{
- InitEPSize(XINPUT_TX_ENDPOINT, EP_TYPE_INTERRUPT_IN, 1, 32); // Control Data Send
- InitEPSize(XINPUT_RX_ENDPOINT, EP_TYPE_INTERRUPT_OUT, 2, 32); // Control Data Receive
- InitEPSize(5, EP_TYPE_INTERRUPT_IN, 1, 32); // Expansion Interface NACK (avoid config reset)
-
- UERST = 0x7E; // Reset endpoints
- UERST = 0; // End reset
-
- SetEP(XINPUT_RX_ENDPOINT); // Select XInput RX endpoint (OUT)
- UEIENX |= (1 << RXOUTE); // Enable received "OUT" interrupt
-}
-
-static int _cmark;
-static int _cend;
-void InitControl(int end)
-{
- SetEP(0);
- _cmark = 0;
- _cend = end;
-}
-
-static
-bool SendControl(u8 d)
-{
- if (_cmark < _cend)
- {
- if (!WaitForINOrOUT())
- return false;
- Send8(d);
- if (!((_cmark + 1) & 0x3F))
- ClearIN(); // Fifo is full, release this packet
- }
- _cmark++;
- return true;
-}
-
-// Clipped by _cmark/_cend
-int USB_SendControl(u8 flags, const void* d, int len)
-{
- int sent = len;
- const u8* data = (const u8*)d;
- bool pgm = flags & TRANSFER_PGM;
- while (len--)
- {
- u8 c = pgm ? pgm_read_byte(data++) : *data++;
- if (!SendControl(c))
- return -1;
- }
- return sent;
-}
-
-// Send a USB descriptor string. The string is stored in PROGMEM as a
-// plain ASCII string but is sent out as UTF-16 with the correct 2-byte
-// prefix
-static bool USB_SendStringDescriptor(const u8*string_P, u8 string_len, uint8_t flags) {
- SendControl(2 + string_len * 2);
- SendControl(3);
- bool pgm = flags & TRANSFER_PGM;
- for(u8 i = 0; i < string_len; i++) {
- bool r = SendControl(pgm ? pgm_read_byte(&string_P[i]) : string_P[i]);
- r &= SendControl(0); // high byte
- if(!r) {
- return false;
- }
- }
- return true;
-}
-
-// Does not timeout or cross fifo boundaries
-int USB_RecvControl(void* d, int len)
-{
- auto length = len;
- while(length)
- {
- // Dont receive more than the USB Control EP has to offer
- // Use fixed 64 because control EP always have 64 bytes even on 16u2.
- auto recvLength = length;
- if(recvLength > 64){
- recvLength = 64;
- }
-
- // Write data to fit to the end (not the beginning) of the array
- WaitOUT();
- Recv((u8*)d + len - length, recvLength);
- ClearOUT();
- length -= recvLength;
- }
- return len;
-}
-
-// Construct a dynamic configuration descriptor
-// This really needs dynamic endpoint allocation etc
-// TODO
-static
-bool SendConfiguration(int maxlen)
-{
- InitControl(maxlen);
- USB_SendControl(TRANSFER_PGM, &USB_ConfigDescriptor, USB_ConfigDescriptorSize);
- return true;
-}
-
-static
-bool SendDescriptor(USBSetup& setup)
-{
- u8 t = setup.wValueH;
- if (USB_CONFIGURATION_DESCRIPTOR_TYPE == t)
- return SendConfiguration(setup.wLength);
-
- InitControl(setup.wLength);
-#ifdef PLUGGABLE_USB_ENABLED
- int ret = PluggableUSB().getDescriptor(setup);
- if (ret != 0) {
- return (ret > 0 ? true : false);
- }
-#endif
-
- const u8* desc_addr = 0;
- if (USB_DEVICE_DESCRIPTOR_TYPE == t)
- {
- desc_addr = (const u8*) &USB_DeviceDescriptor;
- }
- else if (USB_STRING_DESCRIPTOR_TYPE == t)
- {
- if (setup.wValueL == 0) {
- desc_addr = (const u8*)&STRING_LANGUAGE;
- }
- else if (setup.wValueL == IPRODUCT) {
- return USB_SendStringDescriptor(STRING_PRODUCT, strlen(USB_PRODUCT), TRANSFER_PGM);
- }
- else if (setup.wValueL == IMANUFACTURER) {
- return USB_SendStringDescriptor(STRING_MANUFACTURER, strlen(USB_MANUFACTURER), TRANSFER_PGM);
- }
- else if (setup.wValueL == ISERIAL) {
-#ifdef PLUGGABLE_USB_ENABLED
- char name[ISERIAL_MAX_LEN];
- PluggableUSB().getShortName(name);
- return USB_SendStringDescriptor((uint8_t*)name, strlen(name), 0);
-#else
- return USB_SendStringDescriptor(STRING_SERIAL, strlen((char*)STRING_SERIAL), TRANSFER_PGM);
-#endif
- }
- else if (setup.wValueL == ISECURITY) {
- return USB_SendStringDescriptor(STRING_SECURITY, strlen((char*)STRING_SECURITY), TRANSFER_PGM);
- }
- else
- return false;
- }
-
- if (desc_addr == 0)
- return false;
- u8 desc_length = pgm_read_byte(desc_addr);
-
- USB_SendControl(TRANSFER_PGM,desc_addr,desc_length);
- return true;
-}
-
-// Endpoint interrupt
-ISR(USB_COM_vect)
-{
- SetEP(XINPUT_RX_ENDPOINT); // Select XInput RX endpoint (OUT)
- if (UEINTX & (1 << RXOUTI)) { // If data received...
- UEINTX &= ~(1 << RXOUTI); // Clear interrupt flag
- if (XInputUSB::RecvCallback != nullptr) {
- XInputUSB::RecvCallback(); // Call callback function if it exists
- }
- }
-
- SetEP(0);
- if (!ReceivedSetupInt())
- return;
-
- USBSetup setup;
- Recv((u8*)&setup,8);
- ClearSetupInt();
-
- u8 requestType = setup.bmRequestType;
- if (requestType & REQUEST_DEVICETOHOST)
- WaitIN();
- else
- ClearIN();
-
- bool ok = true;
- if (REQUEST_STANDARD == (requestType & REQUEST_TYPE))
- {
- // Standard Requests
- u8 r = setup.bRequest;
- u16 wValue = setup.wValueL | (setup.wValueH << 8);
- if (GET_STATUS == r)
- {
- if (requestType == (REQUEST_DEVICETOHOST | REQUEST_STANDARD | REQUEST_DEVICE))
- {
- Send8(_usbCurrentStatus);
- Send8(0);
- }
- else
- {
- // TODO: handle the HALT state of an endpoint here
- // see "Figure 9-6. Information Returned by a GetStatus() Request to an Endpoint" in usb_20.pdf for more information
- Send8(0);
- Send8(0);
- }
- }
- else if (CLEAR_FEATURE == r)
- {
- if((requestType == (REQUEST_HOSTTODEVICE | REQUEST_STANDARD | REQUEST_DEVICE))
- && (wValue == DEVICE_REMOTE_WAKEUP))
- {
- _usbCurrentStatus &= ~FEATURE_REMOTE_WAKEUP_ENABLED;
- }
- }
- else if (SET_FEATURE == r)
- {
- if((requestType == (REQUEST_HOSTTODEVICE | REQUEST_STANDARD | REQUEST_DEVICE))
- && (wValue == DEVICE_REMOTE_WAKEUP))
- {
- _usbCurrentStatus |= FEATURE_REMOTE_WAKEUP_ENABLED;
- }
- }
- else if (SET_ADDRESS == r)
- {
- WaitIN();
- UDADDR = setup.wValueL | (1<<ADDEN);
- }
- else if (GET_DESCRIPTOR == r)
- {
- ok = SendDescriptor(setup);
- }
- else if (SET_DESCRIPTOR == r)
- {
- ok = false;
- }
- else if (GET_CONFIGURATION == r)
- {
- Send8(1);
- }
- else if (SET_CONFIGURATION == r)
- {
- if (REQUEST_DEVICE == (requestType & REQUEST_RECIPIENT))
- {
- InitEndpoints();
- _usbConfiguration = setup.wValueL;
- } else
- ok = false;
- }
- else if (GET_INTERFACE == r)
- {
- }
- else if (SET_INTERFACE == r)
- {
- }
- }
- else
- {
- ok = true;
- }
-
- if (ok)
- ClearIN();
- else
- {
- Stall();
- }
-}
-
-void USB_Flush(u8 ep)
-{
- SetEP(ep);
- if (FifoByteCount())
- ReleaseTX();
-}
-
-static inline void USB_ClockDisable()
-{
-#if defined(OTGPADE)
- USBCON = (USBCON & ~(1<<OTGPADE)) | (1<<FRZCLK); // freeze clock and disable VBUS Pad
-#else // u2 Series
- USBCON = (1 << FRZCLK); // freeze clock
-#endif
- PLLCSR &= ~(1<<PLLE); // stop PLL
-}
-
-static inline void USB_ClockEnable()
-{
-#if defined(UHWCON)
- UHWCON |= (1<<UVREGE); // power internal reg
-#endif
- USBCON = (1<<USBE) | (1<<FRZCLK); // clock frozen, usb enabled
-
-// ATmega32U4
-#if defined(PINDIV)
-#if F_CPU == 16000000UL
- PLLCSR |= (1<<PINDIV); // Need 16 MHz xtal
-#elif F_CPU == 8000000UL
- PLLCSR &= ~(1<<PINDIV); // Need 8 MHz xtal
-#else
-#error "Clock rate of F_CPU not supported"
-#endif
-
-#elif defined(__AVR_AT90USB82__) || defined(__AVR_AT90USB162__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega8U2__)
- // for the u2 Series the datasheet is confusing. On page 40 its called PINDIV and on page 290 its called PLLP0
-#if F_CPU == 16000000UL
- // Need 16 MHz xtal
- PLLCSR |= (1 << PLLP0);
-#elif F_CPU == 8000000UL
- // Need 8 MHz xtal
- PLLCSR &= ~(1 << PLLP0);
-#endif
-
-// AT90USB646, AT90USB647, AT90USB1286, AT90USB1287
-#elif defined(PLLP2)
-#if F_CPU == 16000000UL
-#if defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
- // For Atmel AT90USB128x only. Do not use with Atmel AT90USB64x.
- PLLCSR = (PLLCSR & ~(1<<PLLP1)) | ((1<<PLLP2) | (1<<PLLP0)); // Need 16 MHz xtal
-#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__)
- // For AT90USB64x only. Do not use with AT90USB128x.
- PLLCSR = (PLLCSR & ~(1<<PLLP0)) | ((1<<PLLP2) | (1<<PLLP1)); // Need 16 MHz xtal
-#else
-#error "USB Chip not supported, please defined method of USB PLL initialization"
-#endif
-#elif F_CPU == 8000000UL
- // for Atmel AT90USB128x and AT90USB64x
- PLLCSR = (PLLCSR & ~(1<<PLLP2)) | ((1<<PLLP1) | (1<<PLLP0)); // Need 8 MHz xtal
-#else
-#error "Clock rate of F_CPU not supported"
-#endif
-#else
-#error "USB Chip not supported, please defined method of USB PLL initialization"
-#endif
-
- PLLCSR |= (1<<PLLE);
- while (!(PLLCSR & (1<<PLOCK))) // wait for lock pll
- {
- }
-
- // Some tests on specific versions of macosx (10.7.3), reported some
- // strange behaviors when the board is reset using the serial
- // port touch at 1200 bps. This delay fixes this behavior.
- delay(1);
-#if defined(OTGPADE)
- USBCON = (USBCON & ~(1<<FRZCLK)) | (1<<OTGPADE); // start USB clock, enable VBUS Pad
-#else
- USBCON &= ~(1 << FRZCLK); // start USB clock
-#endif
-
-#if defined(RSTCPU)
-#if defined(LSM)
- UDCON &= ~((1<<RSTCPU) | (1<<LSM) | (1<<RMWKUP) | (1<<DETACH)); // enable attach resistor, set full speed mode
-#else // u2 Series
- UDCON &= ~((1 << RSTCPU) | (1 << RMWKUP) | (1 << DETACH)); // enable attach resistor, set full speed mode
-#endif
-#else
- // AT90USB64x and AT90USB128x don't have RSTCPU
- UDCON &= ~((1<<LSM) | (1<<RMWKUP) | (1<<DETACH)); // enable attach resistor, set full speed mode
-#endif
-}
-
-// General interrupt
-ISR(USB_GEN_vect)
-{
- u8 udint = UDINT;
- UDINT &= ~((1<<EORSTI) | (1<<SOFI)); // clear the IRQ flags for the IRQs which are handled here, except WAKEUPI and SUSPI (see below)
-
- // End of Reset
- if (udint & (1<<EORSTI))
- {
- InitEP(0,EP_TYPE_CONTROL,EP_SINGLE_64); // init ep0
- _usbConfiguration = 0; // not configured yet
- UEIENX = 1 << RXSTPE; // Enable interrupts for ep0
- }
-
- // Start of Frame - happens every millisecond so we use it for TX and RX LED one-shot timing, too
- if (udint & (1<<SOFI))
- {
- // check whether the one-shot period has elapsed. if so, turn off the LED
- if (TxLEDPulse && !(--TxLEDPulse))
- TXLED0;
- if (RxLEDPulse && !(--RxLEDPulse))
- RXLED0;
- }
-
- // the WAKEUPI interrupt is triggered as soon as there are non-idle patterns on the data
- // lines. Thus, the WAKEUPI interrupt can occur even if the controller is not in the "suspend" mode.
- // Therefore the we enable it only when USB is suspended
- if (udint & (1<<WAKEUPI))
- {
- UDIEN = (UDIEN & ~(1<<WAKEUPE)) | (1<<SUSPE); // Disable interrupts for WAKEUP and enable interrupts for SUSPEND
-
- //TODO
- // WAKEUPI shall be cleared by software (USB clock inputs must be enabled before).
- //USB_ClockEnable();
- UDINT &= ~(1<<WAKEUPI);
- _usbSuspendState = (_usbSuspendState & ~(1<<SUSPI)) | (1<<WAKEUPI);
- }
- else if (udint & (1<<SUSPI)) // only one of the WAKEUPI / SUSPI bits can be active at time
- {
- UDIEN = (UDIEN & ~(1<<SUSPE)) | (1<<WAKEUPE); // Disable interrupts for SUSPEND and enable interrupts for WAKEUP
-
- //TODO
- //USB_ClockDisable();
-
- UDINT &= ~((1<<WAKEUPI) | (1<<SUSPI)); // clear any already pending WAKEUP IRQs and the SUSPI request
- _usbSuspendState = (_usbSuspendState & ~(1<<WAKEUPI)) | (1<<SUSPI);
- }
-}
-
-// VBUS or counting frames
-// Any frame counting?
-u8 USBConnected()
-{
- u8 f = UDFNUML;
- delay(3);
- return f != UDFNUML;
-}
-
-//=======================================================================
-//=======================================================================
-
-USBDevice_ USBDevice;
-
-USBDevice_::USBDevice_()
-{
-}
-
-void USBDevice_::attach()
-{
- _usbConfiguration = 0;
- _usbCurrentStatus = 0;
- _usbSuspendState = 0;
- USB_ClockEnable();
-
- UDINT &= ~((1<<WAKEUPI) | (1<<SUSPI)); // clear already pending WAKEUP / SUSPEND requests
- UDIEN = (1<<EORSTE) | (1<<SOFE) | (1<<SUSPE); // Enable interrupts for EOR (End of Reset), SOF (start of frame) and SUSPEND
-
- TX_RX_LED_INIT;
-}
-
-void USBDevice_::detach()
-{
-}
-
-// Check for interrupts
-// TODO: VBUS detection
-bool USBDevice_::configured()
-{
- return _usbConfiguration;
-}
-
-void USBDevice_::poll()
-{
-}
-
-bool USBDevice_::wakeupHost()
-{
- // clear any previous wakeup request which might have been set but could be processed at that time
- // e.g. because the host was not suspended at that time
- UDCON &= ~(1 << RMWKUP);
-
- if(!(UDCON & (1 << RMWKUP))
- && (_usbSuspendState & (1<<SUSPI))
- && (_usbCurrentStatus & FEATURE_REMOTE_WAKEUP_ENABLED))
- {
- // This short version will only work, when the device has not been suspended. Currently the
- // Arduino core doesn't handle SUSPEND at all, so this is ok.
- USB_ClockEnable();
- UDCON |= (1 << RMWKUP); // send the wakeup request
- return true;
- }
-
- return false;
-}
-
-bool USBDevice_::isSuspended()
-{
- return (_usbSuspendState & (1 << SUSPI));
-}
-
-
-#endif /* if defined(USBCON) */
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-21 19:55:28 +0000