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USB_CDC_MSD_Hello
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USBCDC.cpp
00001 /* Copyright (c) 2010-2011 mbed.org, MIT License 00002 * 00003 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 00004 * and associated documentation files (the "Software"), to deal in the Software without 00005 * restriction, including without limitation the rights to use, copy, modify, merge, publish, 00006 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the 00007 * Software is furnished to do so, subject to the following conditions: 00008 * 00009 * The above copyright notice and this permission notice shall be included in all copies or 00010 * substantial portions of the Software. 00011 * 00012 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 00013 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00014 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 00015 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00016 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00017 */ 00018 00019 #include "stdint.h" 00020 #include "USBCDC.h" 00021 #include "USBBusInterface.h" 00022 00023 static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08}; 00024 00025 #define DEFAULT_CONFIGURATION (1) 00026 00027 #define CDC_SET_LINE_CODING 0x20 00028 #define CDC_GET_LINE_CODING 0x21 00029 #define CDC_SET_CONTROL_LINE_STATE 0x22 00030 00031 #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK 00032 00033 USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) { 00034 USBDevice::connect(); 00035 } 00036 00037 bool USBCDC::USBCallback_request(void) { 00038 /* Called in ISR context */ 00039 00040 bool success = false; 00041 CONTROL_TRANSFER * transfer = getTransferPtr(); 00042 00043 /* Process class-specific requests */ 00044 00045 if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { 00046 switch (transfer->setup.bRequest) { 00047 case CDC_GET_LINE_CODING: 00048 transfer->remaining = 7; 00049 transfer->ptr = cdc_line_coding; 00050 transfer->direction = DEVICE_TO_HOST; 00051 success = true; 00052 break; 00053 case CDC_SET_LINE_CODING: 00054 transfer->remaining = 7; 00055 success = true; 00056 break; 00057 case CDC_SET_CONTROL_LINE_STATE: 00058 success = true; 00059 break; 00060 default: 00061 break; 00062 } 00063 } 00064 00065 return success; 00066 } 00067 00068 00069 // Called in ISR context 00070 // Set configuration. Return false if the 00071 // configuration is not supported. 00072 bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) { 00073 if (configuration != DEFAULT_CONFIGURATION) { 00074 return false; 00075 } 00076 00077 // Configure endpoints > 0 00078 addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT); 00079 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK); 00080 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); 00081 00082 // We activate the endpoint to be able to recceive data 00083 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); 00084 return true; 00085 } 00086 00087 bool USBCDC::send(uint8_t * buffer, uint16_t size) { 00088 return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE); 00089 } 00090 00091 bool USBCDC::readEP(uint8_t * buffer, uint16_t * size) { 00092 if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) 00093 return false; 00094 if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE)) 00095 return false; 00096 return true; 00097 } 00098 00099 bool USBCDC::readEP_NB(uint8_t * buffer, uint16_t * size) { 00100 if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) 00101 return false; 00102 if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE)) 00103 return false; 00104 return true; 00105 } 00106 00107 00108 uint8_t * USBCDC::deviceDesc() { 00109 static uint8_t deviceDescriptor[] = { 00110 18, // bLength 00111 1, // bDescriptorType 00112 0x10, 0x01, // bcdUSB 00113 2, // bDeviceClass 00114 0, // bDeviceSubClass 00115 0, // bDeviceProtocol 00116 MAX_PACKET_SIZE_EP0, // bMaxPacketSize0 00117 LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor 00118 LSB(PRODUCT_ID), MSB(PRODUCT_ID),// idProduct 00119 0x00, 0x01, // bcdDevice 00120 1, // iManufacturer 00121 2, // iProduct 00122 3, // iSerialNumber 00123 1 // bNumConfigurations 00124 }; 00125 return deviceDescriptor; 00126 } 00127 00128 uint8_t * USBCDC::stringIinterfaceDesc() { 00129 static uint8_t stringIinterfaceDescriptor[] = { 00130 0x08, 00131 STRING_DESCRIPTOR, 00132 'C',0,'D',0,'C',0, 00133 }; 00134 return stringIinterfaceDescriptor; 00135 } 00136 00137 uint8_t * USBCDC::stringIproductDesc() { 00138 static uint8_t stringIproductDescriptor[] = { 00139 0x16, 00140 STRING_DESCRIPTOR, 00141 'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 00142 }; 00143 return stringIproductDescriptor; 00144 } 00145 00146 00147 #define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7) 00148 00149 uint8_t * USBCDC::configurationDesc() { 00150 static uint8_t configDescriptor[] = { 00151 9, // bLength; 00152 2, // bDescriptorType; 00153 LSB(CONFIG1_DESC_SIZE), // wTotalLength 00154 MSB(CONFIG1_DESC_SIZE), 00155 2, // bNumInterfaces 00156 1, // bConfigurationValue 00157 0, // iConfiguration 00158 0x80, // bmAttributes 00159 50, // bMaxPower 00160 00161 // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 00162 9, // bLength 00163 4, // bDescriptorType 00164 0, // bInterfaceNumber 00165 0, // bAlternateSetting 00166 1, // bNumEndpoints 00167 0x02, // bInterfaceClass 00168 0x02, // bInterfaceSubClass 00169 0x01, // bInterfaceProtocol 00170 0, // iInterface 00171 00172 // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26 00173 5, // bFunctionLength 00174 0x24, // bDescriptorType 00175 0x00, // bDescriptorSubtype 00176 0x10, 0x01, // bcdCDC 00177 00178 // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27 00179 5, // bFunctionLength 00180 0x24, // bDescriptorType 00181 0x01, // bDescriptorSubtype 00182 0x03, // bmCapabilities 00183 1, // bDataInterface 00184 00185 // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28 00186 4, // bFunctionLength 00187 0x24, // bDescriptorType 00188 0x02, // bDescriptorSubtype 00189 0x06, // bmCapabilities 00190 00191 // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33 00192 5, // bFunctionLength 00193 0x24, // bDescriptorType 00194 0x06, // bDescriptorSubtype 00195 0, // bMasterInterface 00196 1, // bSlaveInterface0 00197 00198 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 00199 ENDPOINT_DESCRIPTOR_LENGTH, // bLength 00200 ENDPOINT_DESCRIPTOR, // bDescriptorType 00201 PHY_TO_DESC(EPINT_IN), // bEndpointAddress 00202 E_INTERRUPT, // bmAttributes (0x03=intr) 00203 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB) 00204 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB) 00205 16, // bInterval 00206 00207 00208 00209 00210 // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 00211 9, // bLength 00212 4, // bDescriptorType 00213 1, // bInterfaceNumber 00214 0, // bAlternateSetting 00215 2, // bNumEndpoints 00216 0x0A, // bInterfaceClass 00217 0x00, // bInterfaceSubClass 00218 0x00, // bInterfaceProtocol 00219 0, // iInterface 00220 00221 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 00222 7, // bLength 00223 5, // bDescriptorType 00224 PHY_TO_DESC(EPBULK_IN), // bEndpointAddress 00225 0x02, // bmAttributes (0x02=bulk) 00226 LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB) 00227 MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB) 00228 0, // bInterval 00229 00230 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 00231 7, // bLength 00232 5, // bDescriptorType 00233 PHY_TO_DESC(EPBULK_OUT),// bEndpointAddress 00234 0x02, // bmAttributes (0x02=bulk) 00235 LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB) 00236 MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB) 00237 0 // bInterval 00238 }; 00239 return configDescriptor; 00240 }
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