diff options
Diffstat (limited to 'cores/arduino/USBCore.cpp')
| -rw-r--r-- | cores/arduino/USBCore.cpp | 141 |
1 files changed, 48 insertions, 93 deletions
diff --git a/cores/arduino/USBCore.cpp b/cores/arduino/USBCore.cpp index 9335238..b384984 100644 --- a/cores/arduino/USBCore.cpp +++ b/cores/arduino/USBCore.cpp @@ -34,7 +34,6 @@ 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; -extern const DeviceDescriptor USB_DeviceDescriptorIAD PROGMEM; const u16 STRING_LANGUAGE[2] = { (3<<8) | (2+2), @@ -65,23 +64,6 @@ const u8 STRING_PRODUCT[] PROGMEM = USB_PRODUCT; const u8 STRING_MANUFACTURER[] PROGMEM = USB_MANUFACTURER; - -#define DEVICE_CLASS 0x02 - -// DEVICE DESCRIPTOR - -#ifdef CDC_ENABLED -const DeviceDescriptor USB_DeviceDescriptorIAD = - D_DEVICE(0xEF,0x02,0x01,64,USB_VID,USB_PID,0x100,IMANUFACTURER,IPRODUCT,ISERIAL,1); -#else // CDC_DISABLED -// The default descriptor uses USB class OxEF, subclass 0x02 with protocol 1 -// which means "Interface Association Descriptor" - that's needed for the CDC, -// but doesn't make much sense as a default for custom devices when CDC is disabled. -// (0x00 means "Use class information in the Interface Descriptors" which should be generally ok) -const DeviceDescriptor USB_DeviceDescriptorIAD = - D_DEVICE(0x00,0x00,0x00,64,USB_VID,USB_PID,0x100,IMANUFACTURER,IPRODUCT,ISERIAL,1); -#endif - //================================================================== //================================================================== @@ -335,67 +317,52 @@ int USB_Send(u8 ep, const void* d, int len) return r; } -u8 _initEndpoints[USB_ENDPOINTS] = -{ - 0, // Control Endpoint - -#ifdef CDC_ENABLED - EP_TYPE_INTERRUPT_IN, // CDC_ENDPOINT_ACM - EP_TYPE_BULK_OUT, // CDC_ENDPOINT_OUT - EP_TYPE_BULK_IN, // CDC_ENDPOINT_IN -#endif - - // Following endpoints are automatically initialized to 0 -}; - #define EP_SINGLE_64 0x32 // EP0 #define EP_DOUBLE_64 0x36 // Other endpoints #define EP_SINGLE_16 0x12 -static +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; - UECONX = (1<<EPEN); - UECFG0X = type; - UECFG1X = 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 -void InitEndpoints() +static inline +bool InitEPSize(const u8 index, const u8 type, const u8 nbanks, const u8 banksize) { - for (u8 i = 1; i < sizeof(_initEndpoints) && _initEndpoints[i] != 0; i++) - { - UENUM = i; - UECONX = (1<<EPEN); - UECFG0X = _initEndpoints[i]; -#if USB_EP_SIZE == 16 - UECFG1X = EP_SINGLE_16; -#elif USB_EP_SIZE == 64 - UECFG1X = EP_DOUBLE_64; -#else -#error Unsupported value for USB_EP_SIZE -#endif - } - UERST = 0x7E; // And reset them - UERST = 0; + 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 } -// Handle CLASS_INTERFACE requests static -bool ClassInterfaceRequest(USBSetup& setup) +void InitEndpoints() { -#ifdef CDC_ENABLED - u8 i = setup.wIndex; + 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) - if (CDC_ACM_INTERFACE == i) - return CDC_Setup(setup); -#endif + UERST = 0x7E; // Reset endpoints + UERST = 0; // End reset -#ifdef PLUGGABLE_USB_ENABLED - return PluggableUSB().setup(setup); -#endif - return false; + SetEP(XINPUT_RX_ENDPOINT); // Select XInput RX endpoint (OUT) + UEIENX |= (1 << RXOUTE); // Enable received "OUT" interrupt } static int _cmark; @@ -476,36 +443,14 @@ int USB_RecvControl(void* d, int len) return len; } -static u8 SendInterfaces() -{ - u8 interfaces = 0; - -#ifdef CDC_ENABLED - CDC_GetInterface(&interfaces); -#endif - -#ifdef PLUGGABLE_USB_ENABLED - PluggableUSB().getInterface(&interfaces); -#endif - - return interfaces; -} - // Construct a dynamic configuration descriptor // This really needs dynamic endpoint allocation etc // TODO static bool SendConfiguration(int maxlen) { - // Count and measure interfaces - InitControl(0); - u8 interfaces = SendInterfaces(); - ConfigDescriptor config = D_CONFIG(_cmark + sizeof(ConfigDescriptor),interfaces); - - // Now send them InitControl(maxlen); - USB_SendControl(0,&config,sizeof(ConfigDescriptor)); - SendInterfaces(); + USB_SendControl(TRANSFER_PGM, &USB_ConfigDescriptor, USB_ConfigDescriptorSize); return true; } @@ -527,7 +472,7 @@ bool SendDescriptor(USBSetup& setup) const u8* desc_addr = 0; if (USB_DEVICE_DESCRIPTOR_TYPE == t) { - desc_addr = (const u8*)&USB_DeviceDescriptorIAD; + desc_addr = (const u8*) &USB_DeviceDescriptor; } else if (USB_STRING_DESCRIPTOR_TYPE == t) { @@ -545,8 +490,13 @@ bool SendDescriptor(USBSetup& setup) 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; } @@ -559,9 +509,17 @@ bool SendDescriptor(USBSetup& setup) return true; } -// Endpoint 0 interrupt +// 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; @@ -648,8 +606,7 @@ ISR(USB_COM_vect) } else { - InitControl(setup.wLength); // Max length of transfer - ok = ClassInterfaceRequest(setup); + ok = true; } if (ok) @@ -770,8 +727,6 @@ ISR(USB_GEN_vect) // Start of Frame - happens every millisecond so we use it for TX and RX LED one-shot timing, too if (udint & (1<<SOFI)) { - USB_Flush(CDC_TX); // Send a tx frame if found - // check whether the one-shot period has elapsed. if so, turn off the LED if (TxLEDPulse && !(--TxLEDPulse)) TXLED0; |