adding additional features
USBCDC.cpp
- Committer:
- sam_grove
- Date:
- 2013-06-26
- Revision:
- 0:2d90573426d7
File content as of revision 0:2d90573426d7:
/* 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}; // baud[0,1] stop[x], parity[x], bits[6] #define DEFAULT_CONFIGURATION (1) #define CDC_SET_LINE_CODING 0x20 #define CDC_GET_LINE_CODING 0x21 #define CDC_SET_CONTROL_LINE_STATE 0x22 #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK USBCDC::USBCDC( uint16_t vendor_id, uint16_t product_id, uint16_t product_release ): USBDevice( vendor_id, product_id, product_release ) { // Moving this up into the USBSerial class //USBDevice::connect(); terminal_status = 0; } uint8_t USBCDC::terminalIsOpen( void ) { return ( terminal_status ) ? 1 : 0; } 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; success = true; break; case CDC_SET_CONTROL_LINE_STATE: // Look at DTR to determine if the terminal is opened on the PC terminal_status = ( uint8_t )transfer->setup.wValue & 0x01; success = true; break; default: break; } } return success; } // 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 LSB( VENDOR_ID ), MSB( VENDOR_ID ), // idVendor LSB( PRODUCT_ID ), 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+9+5+5+4+5+7+9+7+7) uint8_t *USBCDC::configurationDesc() { static uint8_t configDescriptor[] = { 9, // bLength; 2, // bDescriptorType; LSB( CONFIG1_DESC_SIZE ), // wTotalLength MSB( CONFIG1_DESC_SIZE ), 2, // bNumInterfaces 1, // bConfigurationValue 0, // iConfiguration 0x80, // bmAttributes 50, // bMaxPower // 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 7, // bLength 5, // bDescriptorType PHY_TO_DESC( EPBULK_IN ), // bEndpointAddress 0x02, // 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 7, // bLength 5, // bDescriptorType PHY_TO_DESC( EPBULK_OUT ), // bEndpointAddress 0x02, // bmAttributes (0x02=bulk) LSB( MAX_PACKET_SIZE_EPBULK ), // wMaxPacketSize (LSB) MSB( MAX_PACKET_SIZE_EPBULK ), // wMaxPacketSize (MSB) 0 // bInterval }; return configDescriptor; }