Philips Philips
This is early stages of my project, the idea of this project is to be able to mix a guitar with windows sounds in reverse such as instrumental background music or trance music perhaps or maybe another fellow guitarist you may have downloaded from the internet. Microphone or guitar pin is p19 I would use a microphone for drums:) and that it for the moment, the code makes the mbed act as usb speaker that excepts a guitar or microphone input, but with a twist it all in reverse like a guitar reverse effects pedal but only you can mix anything you can get from the internet or any windows sound.
USBDevice/USBSERIAL/USBCDC.cpp@0:7610d342c76e, 2012-01-08 (annotated)
- Committer:
- mbed2f
- Date:
- Sun Jan 08 17:28:24 2012 +0000
- Revision:
- 0:7610d342c76e
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed2f | 0:7610d342c76e | 1 | /* Copyright (c) 2010-2011 mbed.org, MIT License |
| mbed2f | 0:7610d342c76e | 2 | * |
| mbed2f | 0:7610d342c76e | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
| mbed2f | 0:7610d342c76e | 4 | * and associated documentation files (the "Software"), to deal in the Software without |
| mbed2f | 0:7610d342c76e | 5 | * restriction, including without limitation the rights to use, copy, modify, merge, publish, |
| mbed2f | 0:7610d342c76e | 6 | * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
| mbed2f | 0:7610d342c76e | 7 | * Software is furnished to do so, subject to the following conditions: |
| mbed2f | 0:7610d342c76e | 8 | * |
| mbed2f | 0:7610d342c76e | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
| mbed2f | 0:7610d342c76e | 10 | * substantial portions of the Software. |
| mbed2f | 0:7610d342c76e | 11 | * |
| mbed2f | 0:7610d342c76e | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
| mbed2f | 0:7610d342c76e | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| mbed2f | 0:7610d342c76e | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| mbed2f | 0:7610d342c76e | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| mbed2f | 0:7610d342c76e | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| mbed2f | 0:7610d342c76e | 17 | */ |
| mbed2f | 0:7610d342c76e | 18 | |
| mbed2f | 0:7610d342c76e | 19 | #include "stdint.h" |
| mbed2f | 0:7610d342c76e | 20 | #include "USBCDC.h" |
| mbed2f | 0:7610d342c76e | 21 | #include "USBBusInterface.h" |
| mbed2f | 0:7610d342c76e | 22 | |
| mbed2f | 0:7610d342c76e | 23 | static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08}; |
| mbed2f | 0:7610d342c76e | 24 | |
| mbed2f | 0:7610d342c76e | 25 | #define DEFAULT_CONFIGURATION (1) |
| mbed2f | 0:7610d342c76e | 26 | |
| mbed2f | 0:7610d342c76e | 27 | #define CDC_SET_LINE_CODING 0x20 |
| mbed2f | 0:7610d342c76e | 28 | #define CDC_GET_LINE_CODING 0x21 |
| mbed2f | 0:7610d342c76e | 29 | #define CDC_SET_CONTROL_LINE_STATE 0x22 |
| mbed2f | 0:7610d342c76e | 30 | |
| mbed2f | 0:7610d342c76e | 31 | #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK |
| mbed2f | 0:7610d342c76e | 32 | |
| mbed2f | 0:7610d342c76e | 33 | USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) { |
| mbed2f | 0:7610d342c76e | 34 | USBDevice::connect(); |
| mbed2f | 0:7610d342c76e | 35 | } |
| mbed2f | 0:7610d342c76e | 36 | |
| mbed2f | 0:7610d342c76e | 37 | bool USBCDC::USBCallback_request(void) { |
| mbed2f | 0:7610d342c76e | 38 | /* Called in ISR context */ |
| mbed2f | 0:7610d342c76e | 39 | |
| mbed2f | 0:7610d342c76e | 40 | bool success = false; |
| mbed2f | 0:7610d342c76e | 41 | CONTROL_TRANSFER * transfer = getTransferPtr(); |
| mbed2f | 0:7610d342c76e | 42 | |
| mbed2f | 0:7610d342c76e | 43 | /* Process class-specific requests */ |
| mbed2f | 0:7610d342c76e | 44 | |
| mbed2f | 0:7610d342c76e | 45 | if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { |
| mbed2f | 0:7610d342c76e | 46 | switch (transfer->setup.bRequest) { |
| mbed2f | 0:7610d342c76e | 47 | case CDC_GET_LINE_CODING: |
| mbed2f | 0:7610d342c76e | 48 | transfer->remaining = 7; |
| mbed2f | 0:7610d342c76e | 49 | transfer->ptr = cdc_line_coding; |
| mbed2f | 0:7610d342c76e | 50 | transfer->direction = DEVICE_TO_HOST; |
| mbed2f | 0:7610d342c76e | 51 | success = true; |
| mbed2f | 0:7610d342c76e | 52 | break; |
| mbed2f | 0:7610d342c76e | 53 | case CDC_SET_LINE_CODING: |
| mbed2f | 0:7610d342c76e | 54 | transfer->remaining = 7; |
| mbed2f | 0:7610d342c76e | 55 | success = true; |
| mbed2f | 0:7610d342c76e | 56 | break; |
| mbed2f | 0:7610d342c76e | 57 | case CDC_SET_CONTROL_LINE_STATE: |
| mbed2f | 0:7610d342c76e | 58 | success = true; |
| mbed2f | 0:7610d342c76e | 59 | break; |
| mbed2f | 0:7610d342c76e | 60 | default: |
| mbed2f | 0:7610d342c76e | 61 | break; |
| mbed2f | 0:7610d342c76e | 62 | } |
| mbed2f | 0:7610d342c76e | 63 | } |
| mbed2f | 0:7610d342c76e | 64 | |
| mbed2f | 0:7610d342c76e | 65 | return success; |
| mbed2f | 0:7610d342c76e | 66 | } |
| mbed2f | 0:7610d342c76e | 67 | |
| mbed2f | 0:7610d342c76e | 68 | |
| mbed2f | 0:7610d342c76e | 69 | // Called in ISR context |
| mbed2f | 0:7610d342c76e | 70 | // Set configuration. Return false if the |
| mbed2f | 0:7610d342c76e | 71 | // configuration is not supported. |
| mbed2f | 0:7610d342c76e | 72 | bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) { |
| mbed2f | 0:7610d342c76e | 73 | if (configuration != DEFAULT_CONFIGURATION) { |
| mbed2f | 0:7610d342c76e | 74 | return false; |
| mbed2f | 0:7610d342c76e | 75 | } |
| mbed2f | 0:7610d342c76e | 76 | |
| mbed2f | 0:7610d342c76e | 77 | // Configure endpoints > 0 |
| mbed2f | 0:7610d342c76e | 78 | addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT); |
| mbed2f | 0:7610d342c76e | 79 | addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK); |
| mbed2f | 0:7610d342c76e | 80 | addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); |
| mbed2f | 0:7610d342c76e | 81 | |
| mbed2f | 0:7610d342c76e | 82 | // We activate the endpoint to be able to recceive data |
| mbed2f | 0:7610d342c76e | 83 | readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); |
| mbed2f | 0:7610d342c76e | 84 | return true; |
| mbed2f | 0:7610d342c76e | 85 | } |
| mbed2f | 0:7610d342c76e | 86 | |
| mbed2f | 0:7610d342c76e | 87 | bool USBCDC::send(uint8_t * buffer, uint16_t size) { |
| mbed2f | 0:7610d342c76e | 88 | return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE); |
| mbed2f | 0:7610d342c76e | 89 | } |
| mbed2f | 0:7610d342c76e | 90 | |
| mbed2f | 0:7610d342c76e | 91 | bool USBCDC::readEP(uint8_t * buffer, uint16_t * size) { |
| mbed2f | 0:7610d342c76e | 92 | if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) |
| mbed2f | 0:7610d342c76e | 93 | return false; |
| mbed2f | 0:7610d342c76e | 94 | if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE)) |
| mbed2f | 0:7610d342c76e | 95 | return false; |
| mbed2f | 0:7610d342c76e | 96 | return true; |
| mbed2f | 0:7610d342c76e | 97 | } |
| mbed2f | 0:7610d342c76e | 98 | |
| mbed2f | 0:7610d342c76e | 99 | bool USBCDC::readEP_NB(uint8_t * buffer, uint16_t * size) { |
| mbed2f | 0:7610d342c76e | 100 | if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) |
| mbed2f | 0:7610d342c76e | 101 | return false; |
| mbed2f | 0:7610d342c76e | 102 | if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE)) |
| mbed2f | 0:7610d342c76e | 103 | return false; |
| mbed2f | 0:7610d342c76e | 104 | return true; |
| mbed2f | 0:7610d342c76e | 105 | } |
| mbed2f | 0:7610d342c76e | 106 | |
| mbed2f | 0:7610d342c76e | 107 | |
| mbed2f | 0:7610d342c76e | 108 | uint8_t * USBCDC::deviceDesc() { |
| mbed2f | 0:7610d342c76e | 109 | static uint8_t deviceDescriptor[] = { |
| mbed2f | 0:7610d342c76e | 110 | 18, // bLength |
| mbed2f | 0:7610d342c76e | 111 | 1, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 112 | 0x10, 0x01, // bcdUSB |
| mbed2f | 0:7610d342c76e | 113 | 2, // bDeviceClass |
| mbed2f | 0:7610d342c76e | 114 | 0, // bDeviceSubClass |
| mbed2f | 0:7610d342c76e | 115 | 0, // bDeviceProtocol |
| mbed2f | 0:7610d342c76e | 116 | MAX_PACKET_SIZE_EP0, // bMaxPacketSize0 |
| mbed2f | 0:7610d342c76e | 117 | LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor |
| mbed2f | 0:7610d342c76e | 118 | LSB(PRODUCT_ID), MSB(PRODUCT_ID),// idProduct |
| mbed2f | 0:7610d342c76e | 119 | 0x00, 0x01, // bcdDevice |
| mbed2f | 0:7610d342c76e | 120 | 1, // iManufacturer |
| mbed2f | 0:7610d342c76e | 121 | 2, // iProduct |
| mbed2f | 0:7610d342c76e | 122 | 3, // iSerialNumber |
| mbed2f | 0:7610d342c76e | 123 | 1 // bNumConfigurations |
| mbed2f | 0:7610d342c76e | 124 | }; |
| mbed2f | 0:7610d342c76e | 125 | return deviceDescriptor; |
| mbed2f | 0:7610d342c76e | 126 | } |
| mbed2f | 0:7610d342c76e | 127 | |
| mbed2f | 0:7610d342c76e | 128 | uint8_t * USBCDC::stringIinterfaceDesc() { |
| mbed2f | 0:7610d342c76e | 129 | static uint8_t stringIinterfaceDescriptor[] = { |
| mbed2f | 0:7610d342c76e | 130 | 0x08, |
| mbed2f | 0:7610d342c76e | 131 | STRING_DESCRIPTOR, |
| mbed2f | 0:7610d342c76e | 132 | 'C',0,'D',0,'C',0, |
| mbed2f | 0:7610d342c76e | 133 | }; |
| mbed2f | 0:7610d342c76e | 134 | return stringIinterfaceDescriptor; |
| mbed2f | 0:7610d342c76e | 135 | } |
| mbed2f | 0:7610d342c76e | 136 | |
| mbed2f | 0:7610d342c76e | 137 | uint8_t * USBCDC::stringIproductDesc() { |
| mbed2f | 0:7610d342c76e | 138 | static uint8_t stringIproductDescriptor[] = { |
| mbed2f | 0:7610d342c76e | 139 | 0x16, |
| mbed2f | 0:7610d342c76e | 140 | STRING_DESCRIPTOR, |
| mbed2f | 0:7610d342c76e | 141 | 'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 |
| mbed2f | 0:7610d342c76e | 142 | }; |
| mbed2f | 0:7610d342c76e | 143 | return stringIproductDescriptor; |
| mbed2f | 0:7610d342c76e | 144 | } |
| mbed2f | 0:7610d342c76e | 145 | |
| mbed2f | 0:7610d342c76e | 146 | |
| mbed2f | 0:7610d342c76e | 147 | #define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7) |
| mbed2f | 0:7610d342c76e | 148 | |
| mbed2f | 0:7610d342c76e | 149 | uint8_t * USBCDC::configurationDesc() { |
| mbed2f | 0:7610d342c76e | 150 | static uint8_t configDescriptor[] = { |
| mbed2f | 0:7610d342c76e | 151 | 9, // bLength; |
| mbed2f | 0:7610d342c76e | 152 | 2, // bDescriptorType; |
| mbed2f | 0:7610d342c76e | 153 | LSB(CONFIG1_DESC_SIZE), // wTotalLength |
| mbed2f | 0:7610d342c76e | 154 | MSB(CONFIG1_DESC_SIZE), |
| mbed2f | 0:7610d342c76e | 155 | 2, // bNumInterfaces |
| mbed2f | 0:7610d342c76e | 156 | 1, // bConfigurationValue |
| mbed2f | 0:7610d342c76e | 157 | 0, // iConfiguration |
| mbed2f | 0:7610d342c76e | 158 | 0x80, // bmAttributes |
| mbed2f | 0:7610d342c76e | 159 | 50, // bMaxPower |
| mbed2f | 0:7610d342c76e | 160 | |
| mbed2f | 0:7610d342c76e | 161 | // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 |
| mbed2f | 0:7610d342c76e | 162 | 9, // bLength |
| mbed2f | 0:7610d342c76e | 163 | 4, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 164 | 0, // bInterfaceNumber |
| mbed2f | 0:7610d342c76e | 165 | 0, // bAlternateSetting |
| mbed2f | 0:7610d342c76e | 166 | 1, // bNumEndpoints |
| mbed2f | 0:7610d342c76e | 167 | 0x02, // bInterfaceClass |
| mbed2f | 0:7610d342c76e | 168 | 0x02, // bInterfaceSubClass |
| mbed2f | 0:7610d342c76e | 169 | 0x01, // bInterfaceProtocol |
| mbed2f | 0:7610d342c76e | 170 | 0, // iInterface |
| mbed2f | 0:7610d342c76e | 171 | |
| mbed2f | 0:7610d342c76e | 172 | // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26 |
| mbed2f | 0:7610d342c76e | 173 | 5, // bFunctionLength |
| mbed2f | 0:7610d342c76e | 174 | 0x24, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 175 | 0x00, // bDescriptorSubtype |
| mbed2f | 0:7610d342c76e | 176 | 0x10, 0x01, // bcdCDC |
| mbed2f | 0:7610d342c76e | 177 | |
| mbed2f | 0:7610d342c76e | 178 | // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27 |
| mbed2f | 0:7610d342c76e | 179 | 5, // bFunctionLength |
| mbed2f | 0:7610d342c76e | 180 | 0x24, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 181 | 0x01, // bDescriptorSubtype |
| mbed2f | 0:7610d342c76e | 182 | 0x03, // bmCapabilities |
| mbed2f | 0:7610d342c76e | 183 | 1, // bDataInterface |
| mbed2f | 0:7610d342c76e | 184 | |
| mbed2f | 0:7610d342c76e | 185 | // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28 |
| mbed2f | 0:7610d342c76e | 186 | 4, // bFunctionLength |
| mbed2f | 0:7610d342c76e | 187 | 0x24, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 188 | 0x02, // bDescriptorSubtype |
| mbed2f | 0:7610d342c76e | 189 | 0x06, // bmCapabilities |
| mbed2f | 0:7610d342c76e | 190 | |
| mbed2f | 0:7610d342c76e | 191 | // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33 |
| mbed2f | 0:7610d342c76e | 192 | 5, // bFunctionLength |
| mbed2f | 0:7610d342c76e | 193 | 0x24, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 194 | 0x06, // bDescriptorSubtype |
| mbed2f | 0:7610d342c76e | 195 | 0, // bMasterInterface |
| mbed2f | 0:7610d342c76e | 196 | 1, // bSlaveInterface0 |
| mbed2f | 0:7610d342c76e | 197 | |
| mbed2f | 0:7610d342c76e | 198 | // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 |
| mbed2f | 0:7610d342c76e | 199 | ENDPOINT_DESCRIPTOR_LENGTH, // bLength |
| mbed2f | 0:7610d342c76e | 200 | ENDPOINT_DESCRIPTOR, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 201 | PHY_TO_DESC(EPINT_IN), // bEndpointAddress |
| mbed2f | 0:7610d342c76e | 202 | E_INTERRUPT, // bmAttributes (0x03=intr) |
| mbed2f | 0:7610d342c76e | 203 | LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB) |
| mbed2f | 0:7610d342c76e | 204 | MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB) |
| mbed2f | 0:7610d342c76e | 205 | 16, // bInterval |
| mbed2f | 0:7610d342c76e | 206 | |
| mbed2f | 0:7610d342c76e | 207 | |
| mbed2f | 0:7610d342c76e | 208 | |
| mbed2f | 0:7610d342c76e | 209 | |
| mbed2f | 0:7610d342c76e | 210 | // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 |
| mbed2f | 0:7610d342c76e | 211 | 9, // bLength |
| mbed2f | 0:7610d342c76e | 212 | 4, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 213 | 1, // bInterfaceNumber |
| mbed2f | 0:7610d342c76e | 214 | 0, // bAlternateSetting |
| mbed2f | 0:7610d342c76e | 215 | 2, // bNumEndpoints |
| mbed2f | 0:7610d342c76e | 216 | 0x0A, // bInterfaceClass |
| mbed2f | 0:7610d342c76e | 217 | 0x00, // bInterfaceSubClass |
| mbed2f | 0:7610d342c76e | 218 | 0x00, // bInterfaceProtocol |
| mbed2f | 0:7610d342c76e | 219 | 0, // iInterface |
| mbed2f | 0:7610d342c76e | 220 | |
| mbed2f | 0:7610d342c76e | 221 | // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 |
| mbed2f | 0:7610d342c76e | 222 | 7, // bLength |
| mbed2f | 0:7610d342c76e | 223 | 5, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 224 | PHY_TO_DESC(EPBULK_IN), // bEndpointAddress |
| mbed2f | 0:7610d342c76e | 225 | 0x02, // bmAttributes (0x02=bulk) |
| mbed2f | 0:7610d342c76e | 226 | LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB) |
| mbed2f | 0:7610d342c76e | 227 | MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB) |
| mbed2f | 0:7610d342c76e | 228 | 0, // bInterval |
| mbed2f | 0:7610d342c76e | 229 | |
| mbed2f | 0:7610d342c76e | 230 | // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 |
| mbed2f | 0:7610d342c76e | 231 | 7, // bLength |
| mbed2f | 0:7610d342c76e | 232 | 5, // bDescriptorType |
| mbed2f | 0:7610d342c76e | 233 | PHY_TO_DESC(EPBULK_OUT),// bEndpointAddress |
| mbed2f | 0:7610d342c76e | 234 | 0x02, // bmAttributes (0x02=bulk) |
| mbed2f | 0:7610d342c76e | 235 | LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB) |
| mbed2f | 0:7610d342c76e | 236 | MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB) |
| mbed2f | 0:7610d342c76e | 237 | 0 // bInterval |
| mbed2f | 0:7610d342c76e | 238 | }; |
| mbed2f | 0:7610d342c76e | 239 | return configDescriptor; |
| mbed2f | 0:7610d342c76e | 240 | } |