Changed file extensions from .c to .cpp
Fork of USBMIDI by
Diff: usbdevice.cpp
- Revision:
- 3:1c9f95100210
- Parent:
- 2:10d694d6ccdc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usbdevice.cpp Fri Apr 29 01:46:03 2016 +0000 @@ -0,0 +1,181 @@ +/* @license The MIT License + * Copyright (c) 2011 mux, simon + * + * 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 "usbcore.h" +#include "mbed.h" + +#define STANDARD_DEVICE_REQUEST (0x00) +#define STANDARD_INTERFACE_REQUEST (0x01) +#define STANDARD_ENDPOINT_REQUEST (0x02) +#define CLASS_DEVICE_REQUEST (0x20) +#define CLASS_INTERFACE_REQUEST (0x21) +#define CLASS_ENDPOINT_REQUEST (0x22) +#define VENDOR_DEVICE_REQUEST (0x40) +#define VENDOR_INTERFACE_REQUEST (0x41) +#define VENDOR_ENDPOINT_REQUEST (0x42) +#define GET_STATUS (0x00) +#define CLEAR_FEATURE (0x01) +#define SET_FEATURE (0x03) +#define SET_ADDRESS (0x05) +#define GET_DESCRIPTOR (0x06) +#define SET_DESCRIPTOR (0x07) +#define GET_CONFIGURATION (0x08) +#define SET_CONFIGURATION (0x09) +#define DEVICE_DESCRIPTOR (0x01) +#define CONFIG_DESCRIPTOR (0x02) +#define STRING_DESCRIPTOR (0x03) +#define INTERFACE_DESCRIPTOR (0x04) +#define ENDPOINT_DESCRIPTOR (0x05) +#define QUALIFIER_DESCRIPTOR (0x06) +#define unpack(x) (x & 0xFF),((x >> 8) & 0xFF) + +// setup packet +struct { + uint8_t bmRequestType; + uint8_t bRequest; + uint16_t wValue; + uint16_t wIndex; + uint16_t wLength; +} __attribute__((packed)) setup = {0}; + +// data packet +struct { + uint8_t *data; + uint8_t size; + uint8_t sent; +} transfer = {0}; + +uint8_t device_descriptor[] = { + 0x12, // Descriptor size in bytes (12h) + DEVICE_DESCRIPTOR, // The constant DEVICE (01h) + unpack(0x0200), // US2B specification release number (BCD) + 0x00, // Class code + 0x00, // Subclass code + 0x00, // Protocol Code + MAX_EP0_PSIZE, // Maximum packet size for endpoint zero + unpack(0x0763), // Vendor ID + unpack(0x0198), // Product ID + unpack(0x0001), // Device release number (BCD) + 0x00, // Index of string descriptor for the manufacturer + 0x00, // Index of string descriptor for the product + 0x00, // Index of string descriptor for the serial number + 0x01, // Number of possible configurations +}; + +uint8_t config_descriptor[]={ + 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50, // configuration descriptor + // The Audio Interface Collection + 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor + 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor + 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors + 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor + + // MIDI IN JACKS + 0x06, 0x24, 0x02, 0x01, 0x01, 0x00, + 0x06, 0x24, 0x02, 0x02, 0x02, 0x00, + + // MIDI OUT JACKS + 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00, + 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00, + + // OUT endpoint descriptor + 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, + 0x05, 0x25, 0x01, 0x01, 0x01, + + // IN endpoint descriptor + 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, + 0x05, 0x25, 0x01, 0x01, 0x03, +}; + +void ep0_in(); + +void data_in_stage(uint8_t *desc, uint8_t length) { + transfer.sent = 0; + transfer.data = desc; + transfer.size = length; + ep0_in(); +} + +void status_in_stage() { + ep_write(EP1, 0, 0); // ZLEP for status stage +} + +void ep0_setup() { + ep_read(EP0,(uint8_t*) &setup); + + switch (setup.bmRequestType & 0x7f) { // mask direction + case STANDARD_DEVICE_REQUEST: + switch (setup.bRequest) { + case GET_DESCRIPTOR: + switch ((setup.wValue>>8)) { + case DEVICE_DESCRIPTOR: // device descriptor request + case QUALIFIER_DESCRIPTOR: // device qualifier descriptor + data_in_stage(device_descriptor, sizeof(device_descriptor)); + break; + case CONFIG_DESCRIPTOR: // configuration descriptor + data_in_stage(config_descriptor, setup.wLength); + break; + case STRING_DESCRIPTOR: + break; + default: + break; + } + break; + case SET_ADDRESS: + usb_set_address((uint8_t) (setup.wValue & 0xFF)); + status_in_stage(); + break; + case SET_CONFIGURATION: + if (!setup.wValue) { + break; + } + ep_realize(EP4, MAX_EPn_PSIZE); + ep_realize(EP5, MAX_EPn_PSIZE); + status_in_stage(); + usb_configure(1); + break; + default: + break; + } + break; + default: + break; + } +} + +void ep0_in() { + if ((setup.bmRequestType & 0x80) && transfer.size) { // device to host + if (transfer.size > MAX_EP0_PSIZE) { + transfer.sent = MAX_EP0_PSIZE; + } else { + transfer.sent = transfer.size; + } + ep_write(EP1, transfer.data, transfer.sent); + transfer.data += transfer.sent; + transfer.size -= transfer.sent; + } +} + +void ep0_out() { + uint8_t buf[64]; + ep_read(EP0, buf); +}