diff options
Diffstat (limited to 'libopencm3/include/libopencm3/stm32/usb_desc.h')
| -rw-r--r-- | libopencm3/include/libopencm3/stm32/usb_desc.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/libopencm3/include/libopencm3/stm32/usb_desc.h b/libopencm3/include/libopencm3/stm32/usb_desc.h new file mode 100644 index 0000000..fa87264 --- /dev/null +++ b/libopencm3/include/libopencm3/stm32/usb_desc.h @@ -0,0 +1,101 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Piotr Esden-Tempski <piotr@esden.net> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef LIBOPENCM3_USB_DESC +#define LIBOPENCM3_USB_DESC + +/* Descriptor types */ +#define USB_DT_DEVICE 0x01 +#define USB_DT_CONF 0x02 +#define USB_DT_STRING 0x03 +#define USB_DT_INTERFACE 0x04 +#define USB_DT_ENDPOINT 0x05 + +struct usb_desc_head { + uint8_t length; /* Descriptor size 0x012 */ + uint8_t type; /* Descriptor type ID */ +}; + +struct usb_device_desc { + struct usb_desc_head h; /* Size 0x12, ID 0x01 */ + uint16_t bcd_usb; /* USB Version */ + uint8_t class; /* Device class */ + uint8_t sub_class; /* Subclass code */ + uint8_t protocol; /* Protocol code */ + uint8_t max_psize; /* Maximum packet size -> 64bytes */ + uint16_t vendor; /* Vendor number */ + uint16_t product; /* Device number */ + uint16_t bcd_dev; /* Device version */ + uint8_t man_desc; /* Index of manufacturer string desc */ + uint8_t prod_desc; /* Index of product string desc */ + uint8_t sn_desc; /* Index of serial number string desc */ + uint8_t num_conf; /* Number of possible configurations */ +}; + +struct usb_conf_desc_header { + struct usb_desc_head h; /* Size 0x09, Id 0x02 */ + uint16_t tot_leng; /* Total length of data */ + uint8_t num_int; /* Number of interfaces */ + uint8_t conf_val; /* Configuration selector */ + uint8_t conf_desc; /* Index of conf string desc */ + uint8_t attr; /* Attribute bitmap: + * 7 : Bus powered + * 6 : Self powered + * 5 : Remote wakeup + * 4..0 : Reserved -> 0000 + */ + uint8_t max_power; /* Maximum power consumption in 2mA steps */ +}; + +struct usb_int_desc_header { + struct usb_desc_head h; /* Size 0x09, Id 0x04 */ + uint8_t iface_num; /* Interface id number */ + uint8_t alt_setting; /* Alternative setting selector */ + uint8_t num_endp; /* Endpoints used */ + uint8_t class; /* Interface class */ + uint8_t sub_class; /* Subclass code */ + uint8_t protocol; /* Protocol code */ + uint8_t iface_desc; /* Index of interface string desc */ +}; + +struct usb_ep_desc { + struct usb_desc_head h; /* Size 0x07, Id 0x05 */ + uint8_t ep_addr; /* Endpoint address: + 0..3 : Endpoint Number + 4..6 : Reserved -> 0 + 7 : Direction 0=out 1=in */ + uint8_t ep_attr; /* Endpoint attributes */ + uint16_t max_psize; /* Maximum packet size -> 64bytes */ + uint8_t interval; /* Interval for polling endpoint + data. Ignored for bulk & control + endpoints. */ +}; + +struct usb_conf_desc { + struct usb_conf_desc_header cdh; + struct usb_int_desc_header idh; + struct usb_ep_desc ep[]; +}; + +struct usb_string_desc { + struct usb_desc_head h; /* Size > 0x02, Id 0x03 */ + uint16_t string[]; /* String UTF16 encoded */ +}; + +#endif |