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USB composite device example program, drag-and-drop flash writer.
Dependencies: SWD USBDevice mbed BaseDAP
tests/USBMSD2/USB_CDC.cpp
- Committer:
- va009039
- Date:
- 2013-09-28
- Revision:
- 1:ea8e179320d7
File content as of revision 1:ea8e179320d7:
/* 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 "USB_CDC.h" #define MY_DEBUG #include "mydebug.h" #define CDC_SET_LINE_CODING 0x20 #define CDC_GET_LINE_CODING 0x21 #define CDC_SET_CONTROL_LINE_STATE 0x22 #define CDC_SEND_BREAK 0x23 #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK USB_CDC::USB_CDC(USBDevice* device) : _device(device), _rx_buf(128) { terminal_connected = false; //USBDevice::connect(); } void USB_CDC::putc(int c) { if (terminal_connected) { uint8_t buf[1]; buf[0] = c; _device->write(CDC_EPBULK_IN, buf, sizeof(buf), MAX_CDC_REPORT_SIZE); } } int USB_CDC::getc() { uint8_t c = 0; while (_rx_buf.isEmpty()); _rx_buf.dequeue(&c); return c; } int USB_CDC::readable() { return _rx_buf.available() > 0 ? 1 : 0; } int USB_CDC::writeable() { return 1; } void USB_CDC::baud_callback(int baudrate) { DBG("baudrate=%d", baudrate); } void USB_CDC::send_break_callback(uint16_t duration) { DBG("duration=%04x", duration); } void USB_CDC::control_line_callback(int rts, int dtr) { DBG("rts=%d, dtr=%d", rts, dtr); } bool USB_CDC::send(uint8_t * buffer, uint32_t size) { return _device->write(CDC_EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE); } bool USB_CDC::readEP(uint8_t * buffer, uint32_t * size) { if (!_device->readEP(CDC_EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) return false; if (!_device->readStart(CDC_EPBULK_OUT, MAX_CDC_REPORT_SIZE)) return false; return true; } bool USB_CDC::readEP_NB(uint8_t * buffer, uint32_t * size) { if (!_device->readEP_NB(CDC_EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE)) return false; if (!_device->readStart(CDC_EPBULK_OUT, MAX_CDC_REPORT_SIZE)) return false; return true; } bool USB_CDC::Request_callback(CONTROL_TRANSFER* transfer) { static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08}; if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { switch (transfer->setup.bRequest) { case CDC_SET_LINE_CODING: // 0x20 transfer->remaining = 7; transfer->notify = true; terminal_connected = true; return true; case CDC_GET_LINE_CODING: // x021 transfer->remaining = 7; transfer->ptr = cdc_line_coding; transfer->direction = DEVICE_TO_HOST; return true; case CDC_SET_CONTROL_LINE_STATE: // 0x22 control_line_callback((transfer->setup.wValue>>1) & 1, (transfer->setup.wValue) & 1); terminal_connected = false; return true; case CDC_SEND_BREAK: // 0x23 send_break_callback(transfer->setup.wValue); return true; } } return false; } static uint32_t LD32(uint8_t* buf) { return buf[0]|buf[1]<<8|buf[2]<<16|buf[3]<<24; } bool USB_CDC::RequestCompleted_callback(CONTROL_TRANSFER* transfer, uint8_t* buf, int length) { int baudrate; if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { switch (transfer->setup.bRequest) { case CDC_SET_LINE_CODING: // 0x20 baudrate = LD32(buf); baud_callback(baudrate); return true; } } DBG_HEX((uint8_t*)transfer, sizeof(CONTROL_TRANSFER)); return false; } bool USB_CDC::EPBULK_OUT_callback() // virtual COM to target { uint8_t buf[MAX_CDC_REPORT_SIZE]; uint32_t size = 0; //we read the packet received and put it on the circular buffer _device->readEP(CDC_EPBULK_OUT, buf, &size, MAX_CDC_REPORT_SIZE); for(int i = 0; i < size; i++) { _rx_buf.queue(buf[i]); } // We reactivate the endpoint to receive next characters _device->readStart(CDC_EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); return true; }