393fe8e449
As found in 6f2b39c1be6a8b9531264d92138dc2629d51cfa0, you can't just register a control callback by itself, you can only register them in the set config callback, (or, at least, _after_ set config has been done. This has been compile tested only for the extra examples that were found to have this failing pattern.
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#include <libopencm3/stm32/rcc.h>
|
|
#include <libopencm3/stm32/gpio.h>
|
|
#include <libopencm3/usb/usbd.h>
|
|
|
|
const struct usb_device_descriptor dev = {
|
|
.bLength = USB_DT_DEVICE_SIZE,
|
|
.bDescriptorType = USB_DT_DEVICE,
|
|
.bcdUSB = 0x0200,
|
|
.bDeviceClass = 0xFF,
|
|
.bDeviceSubClass = 0,
|
|
.bDeviceProtocol = 0,
|
|
.bMaxPacketSize0 = 64,
|
|
.idVendor = 0xCAFE,
|
|
.idProduct = 0xCAFE,
|
|
.bcdDevice = 0x0200,
|
|
.iManufacturer = 1,
|
|
.iProduct = 2,
|
|
.iSerialNumber = 3,
|
|
.bNumConfigurations = 1,
|
|
};
|
|
|
|
const struct usb_interface_descriptor iface = {
|
|
.bLength = USB_DT_INTERFACE_SIZE,
|
|
.bDescriptorType = USB_DT_INTERFACE,
|
|
.bInterfaceNumber = 0,
|
|
.bAlternateSetting = 0,
|
|
.bNumEndpoints = 0,
|
|
.bInterfaceClass = 0xFF,
|
|
.bInterfaceSubClass = 0,
|
|
.bInterfaceProtocol = 0,
|
|
.iInterface = 0,
|
|
};
|
|
|
|
const struct usb_interface ifaces[] = {{
|
|
.num_altsetting = 1,
|
|
.altsetting = &iface,
|
|
}};
|
|
|
|
const struct usb_config_descriptor config = {
|
|
.bLength = USB_DT_CONFIGURATION_SIZE,
|
|
.bDescriptorType = USB_DT_CONFIGURATION,
|
|
.wTotalLength = 0,
|
|
.bNumInterfaces = 1,
|
|
.bConfigurationValue = 1,
|
|
.iConfiguration = 0,
|
|
.bmAttributes = 0x80,
|
|
.bMaxPower = 0x32,
|
|
|
|
.interface = ifaces,
|
|
};
|
|
|
|
const char *usb_strings[] = {
|
|
"Black Sphere Technologies",
|
|
"Simple Device",
|
|
"1001",
|
|
};
|
|
|
|
/* Buffer to be used for control requests. */
|
|
uint8_t usbd_control_buffer[128];
|
|
|
|
static int simple_control_callback(usbd_device *usbd_dev, struct usb_setup_data *req, uint8_t **buf,
|
|
uint16_t *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req))
|
|
{
|
|
(void)buf;
|
|
(void)len;
|
|
(void)complete;
|
|
(void)usbd_dev;
|
|
|
|
if (req->bmRequestType != 0x40)
|
|
return 0; /* Only accept vendor request. */
|
|
|
|
if (req->wValue & 1)
|
|
gpio_set(GPIOC, GPIO6);
|
|
else
|
|
gpio_clear(GPIOC, GPIO6);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void usb_set_config_cb(usbd_device *usbd_dev, uint16_t wValue)
|
|
{
|
|
(void)wValue;
|
|
usbd_register_control_callback(
|
|
usbd_dev,
|
|
USB_REQ_TYPE_VENDOR,
|
|
USB_REQ_TYPE_TYPE,
|
|
simple_control_callback);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
usbd_device *usbd_dev;
|
|
|
|
rcc_clock_setup_in_hse_25mhz_out_72mhz();
|
|
|
|
rcc_periph_clock_enable(RCC_GPIOA);
|
|
rcc_periph_clock_enable(RCC_GPIOC);
|
|
rcc_periph_clock_enable(RCC_OTGFS);
|
|
|
|
/* LED output */
|
|
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
|
|
GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
|
|
|
|
usbd_dev = usbd_init(&stm32f107_usb_driver, &dev, &config, usb_strings, 3, usbd_control_buffer, sizeof(usbd_control_buffer));
|
|
usbd_register_set_config_callback(usbd_dev, usb_set_config_cb);
|
|
|
|
while (1)
|
|
usbd_poll(usbd_dev);
|
|
}
|
|
|