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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 = 0xef,
.bDeviceSubClass = 0x02,
.bDeviceProtocol = 0x01,
.bMaxPacketSize0 = 64,
.idVendor = 0x0483,
.idProduct = 0xff03,
.bcdDevice = 0x0200,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
static const struct usb_interface ifaces[] = {
{
.num_altsetting = 1,
.altsetting = &dummy_kb_iface,
.iface_assoc = &dummy_kb_iface_assoc,
},
{
.num_altsetting = 1,
.altsetting = &dfu_iface,
.iface_assoc = &dfu_iface_assoc,
},
{
.num_altsetting = 1,
.altsetting = &comm_iface,
.iface_assoc = &cdc_iface_assoc,
},
{
.num_altsetting = 1,
.altsetting = &data_iface,
},
};
static const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
.bNumInterfaces = 4,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0x80,
.bMaxPower = 0x32,
.interface = ifaces,
};
#define N_USB_STRINGS (sizeof(usb_strings)/sizeof(usb_strings[0]))
static const char *usb_strings[] = {
VENDOR_NAME, /*1*/
PRODUCT_NAME, /*2*/
SERIAL_NUMBER, /*3*/
"dummy device", /*4*/
"Dfu iface", /*5*/
"Clock iface", /*6*/
};
void otg_fs_isr (void)
{
usbd_poll (usb_device);
}
static enum usbd_request_return_codes control_request (usbd_device *usbd_dev,
struct usb_setup_data *req,
uint8_t **buf,
uint16_t *len,
usbd_control_complete_callback *complete)
{
enum usbd_request_return_codes ret;
ret = dfu_control_request (usbd_dev, req, buf, len, complete);
if (ret != USBD_REQ_NEXT_CALLBACK)
return ret;
ret = cdcacm_control_request (usbd_dev, req, buf, len, complete);
if (ret != USBD_REQ_NEXT_CALLBACK)
return ret;
return USBD_REQ_NOTSUPP;
}
static void set_config (usbd_device *usbd_dev, uint16_t wValue)
{
cdcacm_set_config (usbd_dev, wValue);
usbd_register_control_callback (usbd_dev,
USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
control_request);
}
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,
N_USB_STRINGS,
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, set_config);
nvic_enable_irq (NVIC_OTG_FS_IRQ);
}
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