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Initial USB device stack for STM32.

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Patch provided by Gareth McMullin <gareth@blacksphere.co.nz>,
thanks a lot!
This commit is contained in:
Uwe Hermann
2010-11-02 02:02:21 +01:00
parent 1621fde1f4
commit 6e090ccee1
30 changed files with 2913 additions and 10 deletions
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95
lib/usb/usb.c Normal file
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/*
* This file is part of the libopenstm32 project.
*
* Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <usbd.h>
#include <string.h>
#include "usb_private.h"
struct _usbd_device _usbd_device;
uint8_t usbd_control_buffer[128] __attribute__((weak));
/** Main initialization entry point.
*
* Initialize the USB firmware library to implement the USB device described
* by the descriptors provided.
*
* It is required that the 48MHz USB clock is already available.
*
* @param dev Pointer to USB Device descriptor. This must not be changed
* while the device is in use.
* @param conf Pointer to array of USB Configuration descriptors. These
* must not be changed while the device is in use. The length
* of this array is determined by the bNumConfigurations field
* in the device descriptor.
* @return Zero on success (currently cannot fail)
*/
int usbd_init(const struct usb_device_descriptor *dev,
const struct usb_config_descriptor *conf,
const char **strings)
{
_usbd_device.desc = dev;
_usbd_device.config = conf;
_usbd_device.strings = strings;
_usbd_device.ctrl_buf = usbd_control_buffer;
_usbd_device.ctrl_buf_len = sizeof(usbd_control_buffer);
_usbd_hw_init();
_usbd_device.user_callback_ctr[0][USB_TRANSACTION_SETUP] =
_usbd_control_setup;
_usbd_device.user_callback_ctr[0][USB_TRANSACTION_OUT] =
_usbd_control_out;
_usbd_device.user_callback_ctr[0][USB_TRANSACTION_IN] =
_usbd_control_in;
return 0;
}
void usbd_register_reset_callback(void (*callback)(void))
{
_usbd_device.user_callback_reset = callback;
}
void usbd_register_suspend_callback(void (*callback)(void))
{
_usbd_device.user_callback_suspend = callback;
}
void usbd_register_resume_callback(void (*callback)(void))
{
_usbd_device.user_callback_resume = callback;
}
void usbd_set_control_buffer_size(uint16_t size)
{
_usbd_device.ctrl_buf_len = size;
}
void _usbd_reset(void)
{
_usbd_device.current_address = 0;
_usbd_device.current_config = 0;
usbd_ep_setup(0, USB_ENDPOINT_ATTR_CONTROL, 64, NULL);
_usbd_hw_set_address(0);
if(_usbd_device.user_callback_reset)
_usbd_device.user_callback_reset();
}