122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/f1/rcc.h>
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#include <libopencm3/stm32/f1/gpio.h>
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#include <libopencm3/usb/usbd.h>
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const struct usb_device_descriptor dev = {
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.bLength = USB_DT_DEVICE_SIZE,
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.bDescriptorType = USB_DT_DEVICE,
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.bcdUSB = 0x0200,
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.bDeviceClass = 0xFF,
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.bDeviceSubClass = 0,
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.bDeviceProtocol = 0,
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.bMaxPacketSize0 = 64,
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.idVendor = 0xCAFE,
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.idProduct = 0xCAFE,
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.bcdDevice = 0x0200,
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.iManufacturer = 1,
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.iProduct = 2,
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.iSerialNumber = 3,
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.bNumConfigurations = 1,
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};
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const struct usb_interface_descriptor iface = {
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.bLength = USB_DT_INTERFACE_SIZE,
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.bDescriptorType = USB_DT_INTERFACE,
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.bInterfaceNumber = 0,
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.bAlternateSetting = 0,
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.bNumEndpoints = 0,
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.bInterfaceClass = 0xFF,
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.bInterfaceSubClass = 0,
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.bInterfaceProtocol = 0,
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.iInterface = 0,
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};
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const struct usb_interface ifaces[] = {{
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.num_altsetting = 1,
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.altsetting = &iface,
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}};
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const struct usb_config_descriptor config = {
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.bLength = USB_DT_CONFIGURATION_SIZE,
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.bDescriptorType = USB_DT_CONFIGURATION,
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.wTotalLength = 0,
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.bNumInterfaces = 1,
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.bConfigurationValue = 1,
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.iConfiguration = 0,
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.bmAttributes = 0x80,
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.bMaxPower = 0x32,
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.interface = ifaces,
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};
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const char *usb_strings[] = {
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"x",
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"Black Sphere Technologies",
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"Simple Device",
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"1001",
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};
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static int simple_control_callback(usbd_device *usbd_dev, struct usb_setup_data *req, u8 **buf,
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u16 *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req))
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{
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(void)buf;
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(void)len;
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(void)complete;
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(void)usbd_dev;
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if (req->bmRequestType != 0x40)
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return 0; /* Only accept vendor request. */
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if (req->wValue & 1)
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gpio_set(GPIOC, GPIO6);
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else
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gpio_clear(GPIOC, GPIO6);
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return 1;
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}
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int main(void)
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{
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usbd_device *usbd_dev;
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rcc_clock_setup_in_hse_8mhz_out_72mhz();
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
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rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
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/* LED output */
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gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
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usbd_dev = usbd_init(&stm32f107_usb_driver, &dev, &config, usb_strings);
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usbd_register_control_callback(
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usbd_dev,
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USB_REQ_TYPE_VENDOR,
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USB_REQ_TYPE_TYPE,
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simple_control_callback);
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while (1)
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usbd_poll(usbd_dev);
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}
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