/* Copyright (c) 2010-2011 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "stdint.h" #include "USBCDC.h" static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08}; #define DEFAULT_CONFIGURATION (1) #define CDC_SET_LINE_CODING 0x20 #define CDC_GET_LINE_CODING 0x21 #define CDC_SET_CONTROL_LINE_STATE 0x22 // Control Line State bits #define CLS_DTR (1 << 0) #define CLS_RTS (1 << 1) #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect_blocking): USBDevice(vendor_id, product_id, product_release) { terminal_connected = false; USBDevice::connect(connect_blocking); } bool USBCDC::USBCallback_request(void) { /* Called in ISR context */ bool success = false; CONTROL_TRANSFER * transfer = getTransferPtr(); /* Process class-specific requests */ if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { switch (transfer->setup.bRequest) { case CDC_GET_LINE_CODING: transfer->remaining = 7; transfer->ptr = cdc_line_coding; transfer->direction = DEVICE_TO_HOST; success = true; break; case CDC_SET_LINE_CODING: transfer->remaining = 7; transfer->notify = true; success = true; break; case CDC_SET_CONTROL_LINE_STATE: if (transfer->setup.wValue & CLS_DTR) { terminal_connected = true; } else { terminal_connected = false; } success = true; break; default: break; } } return success; } void USBCDC::USBCallback_requestCompleted(uint8_t *buf, uint32_t length) { // Request of setting line coding has 7 bytes if (length != 7) { return; } CONTROL_TRANSFER * transfer = getTransferPtr(); /* Process class-specific requests */ if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { if (transfer->setup.bRequest == CDC_SET_LINE_CODING) { if (memcmp(cdc_line_coding, buf, 7)) { memcpy(cdc_line_coding, buf, 7); int baud = buf[0] + (buf[1] << 8) + (buf[2] << 16) + (buf[3] << 24); int stop = buf[4]; int bits = buf[6]; int parity = buf[5]; lineCodingChanged(baud, bits, parity, stop); } } } } // Called in ISR context // Set configuration. Return false if the // configuration is not supported. bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) { if (configuration != DEFAULT_CONFIGURATION) { return false; } // Configure endpoints > 0 addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT); addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK); addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); // We activate the endpoint to be able to recceive data readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); return true; } bool USBCDC::send(uint8_t * buffer, uint32_t size) { return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE); } bool USBCDC::readEP(uint8_t * buffer, uint32_t * size) { if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) return false; if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE)) return false; return true; } bool USBCDC::readEP_NB(uint8_t * buffer, uint32_t * size) { if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) return false; if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE)) return false; return true; } uint8_t * USBCDC::deviceDesc() { static uint8_t deviceDescriptor[] = { 18, // bLength 1, // bDescriptorType 0x10, 0x01, // bcdUSB 2, // bDeviceClass 0, // bDeviceSubClass 0, // bDeviceProtocol MAX_PACKET_SIZE_EP0, // bMaxPacketSize0 (uint8_t)(LSB(VENDOR_ID)), (uint8_t)(MSB(VENDOR_ID)), // idVendor (uint8_t)(LSB(PRODUCT_ID)), (uint8_t)(MSB(PRODUCT_ID)),// idProduct 0x00, 0x01, // bcdDevice 1, // iManufacturer 2, // iProduct 3, // iSerialNumber 1 // bNumConfigurations }; return deviceDescriptor; } uint8_t * USBCDC::stringIinterfaceDesc() { static uint8_t stringIinterfaceDescriptor[] = { 0x08, STRING_DESCRIPTOR, 'C',0,'D',0,'C',0, }; return stringIinterfaceDescriptor; } uint8_t * USBCDC::stringIproductDesc() { static uint8_t stringIproductDescriptor[] = { 0x16, STRING_DESCRIPTOR, 'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 }; return stringIproductDescriptor; } #define CONFIG1_DESC_SIZE (9+8+9+5+5+4+5+7+9+7+7) uint8_t * USBCDC::configurationDesc() { static uint8_t configDescriptor[] = { // configuration descriptor 9, // bLength 2, // bDescriptorType LSB(CONFIG1_DESC_SIZE), // wTotalLength MSB(CONFIG1_DESC_SIZE), 2, // bNumInterfaces 1, // bConfigurationValue 0, // iConfiguration 0x80, // bmAttributes 50, // bMaxPower // IAD to associate the two CDC interfaces 0x08, // bLength 0x0b, // bDescriptorType 0x00, // bFirstInterface 0x02, // bInterfaceCount 0x02, // bFunctionClass 0x02, // bFunctionSubClass 0, // bFunctionProtocol 0, // iFunction // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 9, // bLength 4, // bDescriptorType 0, // bInterfaceNumber 0, // bAlternateSetting 1, // bNumEndpoints 0x02, // bInterfaceClass 0x02, // bInterfaceSubClass 0x01, // bInterfaceProtocol 0, // iInterface // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26 5, // bFunctionLength 0x24, // bDescriptorType 0x00, // bDescriptorSubtype 0x10, 0x01, // bcdCDC // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27 5, // bFunctionLength 0x24, // bDescriptorType 0x01, // bDescriptorSubtype 0x03, // bmCapabilities 1, // bDataInterface // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28 4, // bFunctionLength 0x24, // bDescriptorType 0x02, // bDescriptorSubtype 0x06, // bmCapabilities // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33 5, // bFunctionLength 0x24, // bDescriptorType 0x06, // bDescriptorSubtype 0, // bMasterInterface 1, // bSlaveInterface0 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 ENDPOINT_DESCRIPTOR_LENGTH, // bLength ENDPOINT_DESCRIPTOR, // bDescriptorType PHY_TO_DESC(EPINT_IN), // bEndpointAddress E_INTERRUPT, // bmAttributes (0x03=intr) LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB) MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB) 16, // bInterval // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 9, // bLength 4, // bDescriptorType 1, // bInterfaceNumber 0, // bAlternateSetting 2, // bNumEndpoints 0x0A, // bInterfaceClass 0x00, // bInterfaceSubClass 0x00, // bInterfaceProtocol 0, // iInterface // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 ENDPOINT_DESCRIPTOR_LENGTH, // bLength ENDPOINT_DESCRIPTOR, // bDescriptorType PHY_TO_DESC(EPBULK_IN), // bEndpointAddress E_BULK, // bmAttributes (0x02=bulk) LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB) MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB) 0, // bInterval // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 ENDPOINT_DESCRIPTOR_LENGTH, // bLength ENDPOINT_DESCRIPTOR, // bDescriptorType PHY_TO_DESC(EPBULK_OUT), // bEndpointAddress E_BULK, // bmAttributes (0x02=bulk) LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB) MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB) 0 // bInterval }; return configDescriptor; }