mirror of
https://github.com/Proxmark/proxmark3.git
synced 2024-09-21 15:26:35 +08:00
Device side USB implementation:
* add some comments and #defines in usb_cdc.c * use full FIFO size of 64 Bytes for device -> host transfers
This commit is contained in:
parent
9d0a333449
commit
f194e4290c
230
common/usb_cdc.c
230
common/usb_cdc.c
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@ -38,19 +38,20 @@
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#define AT91C_EP_CONTROL 0
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#define AT91C_EP_IN_SIZE 0x40
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#define AT91C_EP_OUT 1
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#define AT91C_EP_OUT_SIZE 0x40
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#define AT91C_EP_IN 2
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#define AT91C_EP_NOTIFY 3
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#define AT91C_EP_OUT_SIZE 0x40
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#define AT91C_EP_IN_SIZE 0x40
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static const char devDescriptor[] = {
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/* Device descriptor */
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0x12, // bLength
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0x01, // bDescriptorType
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0x00,0x02, // Complies with USB Spec. Release (0200h = release 2.0)
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0x02, // bDeviceClass: CDC class code
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0x00, // bDeviceSubclass: CDC class sub code
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0x00, // bDeviceProtocol: CDC Device protocol
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0x02, // bDeviceClass: (Communication Device Class)
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0x00, // bDeviceSubclass: (unused at this time)
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0x00, // bDeviceProtocol: (unused at this time)
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0x08, // bMaxPacketSize0
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0xc4,0x9a, // Vendor ID (0x9ac4 = J. Westhues)
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0x8f,0x4b, // Product ID (0x4b8f = Proxmark-3 RFID Instrument)
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@ -74,79 +75,78 @@ static const char cfgDescriptor[] = {
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0xC0, // CbmAttributes 0xA0
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0xFA, // CMaxPower
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/* Communication Class Interface Descriptor Requirement */
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/* Interface 0 Descriptor: Communication Class Interface */
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0x09, // bLength
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0x04, // bDescriptorType
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0x00, // bInterfaceNumber
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0x00, // bAlternateSetting
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0x01, // bNumEndpoints
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0x02, // bInterfaceClass
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0x02, // bInterfaceSubclass
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0x01, // bInterfaceProtocol
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0x02, // bInterfaceClass: Communication Interface Class
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0x02, // bInterfaceSubclass: Abstract Control Model
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0x01, // bInterfaceProtocol: Common AT Commands, V.25ter
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0x00, // iInterface
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/* Header Functional Descriptor */
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0x05, // bFunction Length
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0x24, // bDescriptor type: CS_INTERFACE
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0x00, // bDescriptor subtype: Header Func Desc
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0x24, // bDescriptor type: CS_INTERFACE
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0x00, // bDescriptor subtype: Header Functional Descriptor
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0x10, // bcdCDC:1.1
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0x01,
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/* ACM Functional Descriptor */
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0x04, // bFunctionLength
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0x24, // bDescriptor Type: CS_INTERFACE
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0x02, // bDescriptor Subtype: ACM Func Desc
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0x02, // bmCapabilities
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0x24, // bDescriptor Type: CS_INTERFACE
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0x02, // bDescriptor Subtype: Abstract Control Management Functional Descriptor
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0x02, // bmCapabilities: D1: Device supports the request combination of Set_Line_Coding, Set_Control_Line_State, Get_Line_Coding, and the notification Serial_State
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/* Union Functional Descriptor */
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0x05, // bFunctionLength
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0x24, // bDescriptorType: CS_INTERFACE
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0x06, // bDescriptor Subtype: Union Func Desc
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0x00, // bMasterInterface: Communication Class Interface
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0x01, // bSlaveInterface0: Data Class Interface
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0x24, // bDescriptorType: CS_INTERFACE
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0x06, // bDescriptor Subtype: Union Functional Descriptor
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0x00, // bMasterInterface: Communication Class Interface
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0x01, // bSlaveInterface0: Data Class Interface
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/* Call Management Functional Descriptor */
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0x05, // bFunctionLength
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0x24, // bDescriptor Type: CS_INTERFACE
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0x01, // bDescriptor Subtype: Call Management Func Desc
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0x00, // bmCapabilities: D1 + D0
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0x01, // bDataInterface: Data Class Interface 1
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0x24, // bDescriptor Type: CS_INTERFACE
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0x01, // bDescriptor Subtype: Call Management Functional Descriptor
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0x00, // bmCapabilities: Device sends/receives call management information only over the Communication Class interface. Device does not handle call management itself
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0x01, // bDataInterface: Data Class Interface 1
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/* Endpoint 1 descriptor */
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0x07, // bLength
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0x05, // bDescriptorType
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0x83, // bEndpointAddress, Endpoint 03 - IN
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0x03, // bmAttributes INT
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0x08, // wMaxPacketSize
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0x83, // bEndpointAddress: Endpoint 03 - IN
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0x03, // bmAttributes: INT
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0x08, // wMaxPacketSize: 8
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0x00,
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0xFF, // bInterval
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/* Data Class Interface Descriptor Requirement */
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/* Interface 1 Descriptor: Data Class Interface */
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0x09, // bLength
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0x04, // bDescriptorType
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0x01, // bInterfaceNumber
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0x00, // bAlternateSetting
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0x02, // bNumEndpoints
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0x0A, // bInterfaceClass
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0x00, // bInterfaceSubclass
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0x00, // bInterfaceProtocol
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0x0A, // bInterfaceClass: Data Interface Class
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0x00, // bInterfaceSubclass: not used
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0x00, // bInterfaceProtocol: No class specific protocol required)
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0x00, // iInterface
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/* First alternate setting */
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/* Endpoint 1 descriptor */
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0x07, // bLength
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0x05, // bDescriptorType
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0x01, // bEndpointAddress, Endpoint 01 - OUT
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0x02, // bmAttributes BULK
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AT91C_EP_OUT_SIZE, // wMaxPacketSize
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0x01, // bEndpointAddress: Endpoint 01 - OUT
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0x02, // bmAttributes: BULK
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AT91C_EP_OUT_SIZE, // wMaxPacketSize
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0x00,
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0x00, // bInterval
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/* Endpoint 2 descriptor */
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0x07, // bLength
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0x05, // bDescriptorType
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0x82, // bEndpointAddress, Endpoint 02 - IN
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0x02, // bmAttributes BULK
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0x82, // bEndpointAddress: Endpoint 02 - IN
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0x02, // bmAttributes: BULK
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AT91C_EP_IN_SIZE, // wMaxPacketSize
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0x00,
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0x00 // bInterval
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@ -262,6 +262,7 @@ AT91S_CDC_LINE_CODING line = {
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0, // None Parity
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8}; // 8 Data bits
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void AT91F_CDC_Enumerate();
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AT91PS_UDP pUdp = AT91C_BASE_UDP;
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@ -269,52 +270,55 @@ byte_t btConfiguration = 0;
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byte_t btConnection = 0;
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byte_t btReceiveBank = AT91C_UDP_RX_DATA_BK0;
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//*----------------------------------------------------------------------------
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//* \fn usb_disable
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//* \brief This function deactivates the USB device
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//*----------------------------------------------------------------------------
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void usb_disable() {
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// Disconnect the USB device
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AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;
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// Clear all lingering interrupts
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if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {
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pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;
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}
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// Disconnect the USB device
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AT91C_BASE_PIOA->PIO_ODR = GPIO_USB_PU;
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// Clear all lingering interrupts
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if(pUdp->UDP_ISR & AT91C_UDP_ENDBUSRES) {
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pUdp->UDP_ICR = AT91C_UDP_ENDBUSRES;
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}
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}
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//*----------------------------------------------------------------------------
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//* \fn usb_enable
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//* \brief This function Activates the USB device
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//*----------------------------------------------------------------------------
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void usb_enable() {
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// Set the PLL USB Divider
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AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
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// Specific Chip USB Initialisation
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// Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock
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AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;
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AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);
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// Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO
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// Set in PIO mode and Configure in Output
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AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode
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AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output
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// Clear for set the Pullup resistor
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AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;
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// Disconnect and reconnect USB controller for 100ms
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usb_disable();
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// Wait for a short while
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for (volatile size_t i=0; i<0x100000; i++);
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// Set the PLL USB Divider
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AT91C_BASE_CKGR->CKGR_PLLR |= AT91C_CKGR_USBDIV_1 ;
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// Reconnect USB reconnect
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AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;
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AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;
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// Specific Chip USB Initialisation
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// Enables the 48MHz USB clock UDPCK and System Peripheral USB Clock
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AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UDP;
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AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_UDP);
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// Enable UDP PullUp (USB_DP_PUP) : enable & Clear of the corresponding PIO
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// Set in PIO mode and Configure in Output
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AT91C_BASE_PIOA->PIO_PER = GPIO_USB_PU; // Set in PIO mode
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AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU; // Configure as Output
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// Clear for set the Pullup resistor
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AT91C_BASE_PIOA->PIO_CODR = GPIO_USB_PU;
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// Disconnect and reconnect USB controller for 100ms
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usb_disable();
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// Wait for a short while
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for (volatile size_t i=0; i<0x100000; i++);
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// Reconnect USB reconnect
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AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;
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AT91C_BASE_PIOA->PIO_OER = GPIO_USB_PU;
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}
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//*----------------------------------------------------------------------------
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//* \fn usb_check
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//* \brief Test if the device is configured and handle enumeration
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pUdp->UDP_FADDR = AT91C_UDP_FEN;
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// Configure endpoint 0
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pUdp->UDP_CSR[AT91C_EP_CONTROL] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_CTRL);
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}
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else if (isr & AT91C_UDP_EPINT0) {
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} else if (isr & AT91C_UDP_EPINT0) {
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pUdp->UDP_ICR = AT91C_UDP_EPINT0;
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AT91F_CDC_Enumerate();
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}
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bool usb_poll()
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{
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if (!usb_check()) return false;
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return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);
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if (!usb_check()) return false;
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return (pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank);
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}
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/**
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In github PR #129, some users appears to get a false positive from
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usb_poll, which returns true, but the usb_read operation
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@ -356,7 +360,6 @@ bool usb_poll()
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**/
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bool usb_poll_validate_length()
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{
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if (!usb_check()) return false;
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if (!(pUdp->UDP_CSR[AT91C_EP_OUT] & btReceiveBank)) return false;
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return (pUdp->UDP_CSR[AT91C_EP_OUT] >> 16) > 0;
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@ -393,48 +396,54 @@ uint32_t usb_read(byte_t* data, size_t len) {
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return nbBytesRcv;
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}
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//*----------------------------------------------------------------------------
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//* \fn usb_write
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//* \brief Send through endpoint 2
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//*----------------------------------------------------------------------------
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uint32_t usb_write(const byte_t* data, const size_t len) {
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size_t length = len;
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size_t length = len;
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uint32_t cpt = 0;
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if (!length) return 0;
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if (!usb_check()) return 0;
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if (!length) return 0;
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if (!usb_check()) return 0;
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// Send the first packet
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cpt = MIN(length, AT91C_EP_IN_SIZE-1);
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cpt = MIN(length, AT91C_EP_IN_SIZE);
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length -= cpt;
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while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;
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while (cpt--) {
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pUdp->UDP_FDR[AT91C_EP_IN] = *data++;
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}
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UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);
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while (length) {
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// Fill the second bank
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cpt = MIN(length, AT91C_EP_IN_SIZE-1);
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// Fill the next bank
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cpt = MIN(length, AT91C_EP_IN_SIZE);
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length -= cpt;
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while (cpt--) pUdp->UDP_FDR[AT91C_EP_IN] = *data++;
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// Wait for the first bank to be sent
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while (cpt--) {
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pUdp->UDP_FDR[AT91C_EP_IN] = *data++;
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}
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// Wait for the previous bank to be sent
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while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {
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if (!usb_check()) return length;
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}
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}
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UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);
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while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);
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UDP_SET_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXPKTRDY);
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}
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// Wait for the end of transfer
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while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {
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if (!usb_check()) return length;
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}
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}
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UDP_CLEAR_EP_FLAGS(AT91C_EP_IN, AT91C_UDP_TXCOMP);
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while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);
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return length;
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_USB_SendData
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//* \brief Send Data through the control endpoint
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@ -477,6 +486,7 @@ static void AT91F_USB_SendData(AT91PS_UDP pUdp, const char *pData, uint32_t leng
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}
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_USB_SendZlp
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//* \brief Send zero length packet through the control endpoint
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@ -488,6 +498,7 @@ void AT91F_USB_SendZlp(AT91PS_UDP pUdp) {
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while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_TXCOMP);
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_USB_SendStall
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//* \brief Stall the control endpoint
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while (pUdp->UDP_CSR[AT91C_EP_CONTROL] & (AT91C_UDP_FORCESTALL | AT91C_UDP_ISOERROR));
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}
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//*----------------------------------------------------------------------------
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//* \fn AT91F_CDC_Enumerate
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//* \brief This function is a callback invoked when a SETUP packet is received
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if ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_RXSETUP) )
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return;
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bmRequestType = pUdp->UDP_FDR[0];
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bRequest = pUdp->UDP_FDR[0];
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wValue = (pUdp->UDP_FDR[0] & 0xFF);
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wValue |= (pUdp->UDP_FDR[0] << 8);
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wIndex = (pUdp->UDP_FDR[0] & 0xFF);
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wIndex |= (pUdp->UDP_FDR[0] << 8);
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wLength = (pUdp->UDP_FDR[0] & 0xFF);
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wLength |= (pUdp->UDP_FDR[0] << 8);
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bmRequestType = pUdp->UDP_FDR[AT91C_EP_CONTROL];
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bRequest = pUdp->UDP_FDR[AT91C_EP_CONTROL];
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wValue = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);
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wValue |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);
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wIndex = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);
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wIndex |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);
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wLength = (pUdp->UDP_FDR[AT91C_EP_CONTROL] & 0xFF);
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wLength |= (pUdp->UDP_FDR[AT91C_EP_CONTROL] << 8);
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if (bmRequestType & 0x80) {
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if (bmRequestType & 0x80) { // Data Phase Transfer Direction Device to Host
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UDP_SET_EP_FLAGS(AT91C_EP_CONTROL, AT91C_UDP_DIR);
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while ( !(pUdp->UDP_CSR[AT91C_EP_CONTROL] & AT91C_UDP_DIR) );
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}
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@ -553,29 +565,29 @@ void AT91F_CDC_Enumerate() {
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btConfiguration = wValue;
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AT91F_USB_SendZlp(pUdp);
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pUdp->UDP_GLBSTATE = (wValue) ? AT91C_UDP_CONFG : AT91C_UDP_FADDEN;
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pUdp->UDP_CSR[1] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;
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pUdp->UDP_CSR[2] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;
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pUdp->UDP_CSR[3] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;
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pUdp->UDP_CSR[AT91C_EP_OUT] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT) : 0;
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pUdp->UDP_CSR[AT91C_EP_IN] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN) : 0;
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pUdp->UDP_CSR[AT91C_EP_NOTIFY] = (wValue) ? (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN) : 0;
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||||
break;
|
||||
case STD_GET_CONFIGURATION:
|
||||
AT91F_USB_SendData(pUdp, (char *) &(btConfiguration), sizeof(btConfiguration));
|
||||
break;
|
||||
case STD_GET_STATUS_ZERO:
|
||||
wStatus = 0;
|
||||
wStatus = 0; // Device is Bus powered, remote wakeup disabled
|
||||
AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
|
||||
break;
|
||||
case STD_GET_STATUS_INTERFACE:
|
||||
wStatus = 0;
|
||||
wStatus = 0; // reserved for future use
|
||||
AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
|
||||
break;
|
||||
case STD_GET_STATUS_ENDPOINT:
|
||||
wStatus = 0;
|
||||
wIndex &= 0x0F;
|
||||
if ((pUdp->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= 3)) {
|
||||
if ((pUdp->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= AT91C_EP_NOTIFY)) {
|
||||
wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;
|
||||
AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
|
||||
}
|
||||
else if ((pUdp->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == 0)) {
|
||||
else if ((pUdp->UDP_GLBSTATE & AT91C_UDP_FADDEN) && (wIndex == AT91C_EP_CONTROL)) {
|
||||
wStatus = (pUdp->UDP_CSR[wIndex] & AT91C_UDP_EPEDS) ? 0 : 1;
|
||||
AT91F_USB_SendData(pUdp, (char *) &wStatus, sizeof(wStatus));
|
||||
}
|
||||
|
@ -590,7 +602,7 @@ void AT91F_CDC_Enumerate() {
|
|||
break;
|
||||
case STD_SET_FEATURE_ENDPOINT:
|
||||
wIndex &= 0x0F;
|
||||
if ((wValue == 0) && wIndex && (wIndex <= 3)) {
|
||||
if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {
|
||||
pUdp->UDP_CSR[wIndex] = 0;
|
||||
AT91F_USB_SendZlp(pUdp);
|
||||
}
|
||||
|
@ -605,13 +617,13 @@ void AT91F_CDC_Enumerate() {
|
|||
break;
|
||||
case STD_CLEAR_FEATURE_ENDPOINT:
|
||||
wIndex &= 0x0F;
|
||||
if ((wValue == 0) && wIndex && (wIndex <= 3)) {
|
||||
if (wIndex == 1)
|
||||
pUdp->UDP_CSR[1] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);
|
||||
else if (wIndex == 2)
|
||||
pUdp->UDP_CSR[2] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);
|
||||
else if (wIndex == 3)
|
||||
pUdp->UDP_CSR[3] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN);
|
||||
if ((wValue == 0) && (wIndex >= AT91C_EP_OUT) && (wIndex <= AT91C_EP_NOTIFY)) {
|
||||
if (wIndex == AT91C_EP_OUT)
|
||||
pUdp->UDP_CSR[AT91C_EP_OUT] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_OUT);
|
||||
else if (wIndex == AT91C_EP_IN)
|
||||
pUdp->UDP_CSR[AT91C_EP_IN] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_BULK_IN);
|
||||
else if (wIndex == AT91C_EP_NOTIFY)
|
||||
pUdp->UDP_CSR[AT91C_EP_NOTIFY] = (AT91C_UDP_EPEDS | AT91C_UDP_EPTYPE_INT_IN);
|
||||
AT91F_USB_SendZlp(pUdp);
|
||||
}
|
||||
else
|
||||
|
|
Loading…
Reference in a new issue