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#include "project.h"
#define USB_DM GPIO11
#define USB_DM_PORT GPIOA
#define USB_DP GPIO12
#define USB_DP_PORT GPIOA
/* Buffer to be used for control requests. */
uint8_t usbd_control_buffer[128];
usbd_device *usb_device;
static const struct usb_device_descriptor dev = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bDeviceClass = USB_CLASS_CDC,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = ID_VENDOR,
.idProduct = ID_PRODUCT,
.bcdDevice = 0x0200,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
static const struct usb_interface ifaces[] = {
{
.num_altsetting = 1,
.altsetting = &comm_iface,
},
{
.num_altsetting = 1,
.altsetting = &data_iface,
},
{
.num_altsetting = 1,
.altsetting = &dfu_iface,
},
};
static const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
.bNumInterfaces = 3,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0x80,
.bMaxPower = 0x32,
.interface = ifaces,
};
static const char *usb_strings[] = {
VENDOR_NAME,
PRODUCT_NAME,
SERIAL_NUMBER,
"DFU",
};
void otg_fs_isr (void)
{
usbd_poll (usb_device);
}
void usb_init (void)
{
MAP_AF_100 (USB_DP, GPIO_AF10);
MAP_AF_100 (USB_DM, GPIO_AF10);
usb_device = usbd_init (&otgfs_usb_driver,
&dev,
&config,
usb_strings,
4,
usbd_control_buffer,
sizeof (usbd_control_buffer));
/* Disable VBUS sensing */
OTG_FS_GCCFG |= OTG_GCCFG_NOVBUSSENS;
OTG_FS_GCCFG &= ~OTG_GCCFG_VBUSASEN;
OTG_FS_GCCFG &= ~OTG_GCCFG_VBUSBSEN;
usbd_register_set_config_callback (usb_device, cdcacm_set_config);
nvic_enable_irq (NVIC_OTG_FS_IRQ);
}
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