USB peripheral API

Collaboration diagram for USB peripheral API:

Macros
#define	RX_FIFO_SIZE   256
#define	ENDPOINT_COUNT   4

Functions
static usbd_device *	efm32lg_usbd_init (void)
	Initialize the USB_FS device controller hardware of the STM32. More...
static void	efm32lg_set_address (usbd_device *usbd_dev, uint8_t addr)
static void	efm32lg_ep_setup (usbd_device *usbd_dev, uint8_t addr, uint8_t type, uint16_t max_size, void(*callback)(usbd_device *usbd_dev, uint8_t ep))
static void	efm32lg_endpoints_reset (usbd_device *usbd_dev)
static void	efm32lg_ep_stall_set (usbd_device *usbd_dev, uint8_t addr, uint8_t stall)
static uint8_t	efm32lg_ep_stall_get (usbd_device *usbd_dev, uint8_t addr)
static void	efm32lg_ep_nak_set (usbd_device *usbd_dev, uint8_t addr, uint8_t nak)
static uint16_t	efm32lg_ep_write_packet (usbd_device *usbd_dev, uint8_t addr, const void *buf, uint16_t len)
static uint16_t	efm32lg_ep_read_packet (usbd_device *usbd_dev, uint8_t addr, void *buf, uint16_t len)
static void	efm32lg_poll (usbd_device *usbd_dev)
static void	efm32lg_disconnect (usbd_device *usbd_dev, bool disconnected)

Variables
static struct _usbd_device	_usbd_dev
const struct _usbd_driver	efm32lg_usb_driver

Detailed Description

See also

USB Defines

Copyright

See libopencm3 License

Macro Definition Documentation

ENDPOINT_COUNT

#define ENDPOINT_COUNT   4

Definition at line 50 of file usb_efm32.c.

RX_FIFO_SIZE

#define RX_FIFO_SIZE   256

Definition at line 38 of file usb_efm32.c.

Function Documentation

efm32lg_disconnect()

static void efm32lg_disconnect ( usbd_device *  usbd_dev, bool  disconnected  )

static

Definition at line 408 of file usb_efm32.c.

References USB_DCTL, and USB_DCTL_SDIS.

efm32lg_endpoints_reset()

static void efm32lg_endpoints_reset ( usbd_device *  usbd_dev )

static

Definition at line 184 of file usb_efm32.c.

efm32lg_ep_nak_set()

static void efm32lg_ep_nak_set ( usbd_device *  usbd_dev, uint8_t  addr, uint8_t  nak  )

static

Definition at line 235 of file usb_efm32.c.

References USB_DOEP0CTL_CNAK, USB_DOEP0CTL_SNAK, and USB_DOEPx_CTL.

efm32lg_ep_read_packet()

static uint16_t efm32lg_ep_read_packet ( usbd_device *  usbd_dev, uint8_t  addr, void *  buf, uint16_t  len  )

static

Definition at line 279 of file usb_efm32.c.

References USB_DOEP0CTL_CNAK, USB_DOEP0CTL_EPENA, USB_DOEP0CTL_SNAK, USB_DOEPx_CTL, USB_DOEPx_TSIZ, and USB_FIFOxD.

efm32lg_ep_setup()

static void efm32lg_ep_setup ( usbd_device *  usbd_dev, uint8_t  addr, uint8_t  type, uint16_t  max_size, void(*)(usbd_device *usbd_dev, uint8_t ep)  callback  )

static

Definition at line 107 of file usb_efm32.c.

References USB_DIEP0CTL, USB_DIEP0CTL_CNAK, USB_DIEP0CTL_EPENA, USB_DIEP0CTL_MPSIZ_16, USB_DIEP0CTL_MPSIZ_32, USB_DIEP0CTL_MPSIZ_64, USB_DIEP0CTL_MPSIZ_8, USB_DIEP0CTL_SD0PID, USB_DIEP0CTL_SNAK, USB_DIEP0CTL_USBAEP, USB_DIEP0TSIZ, USB_DIEP0TSIZ_PKTCNT, USB_DIEP0TSIZ_STUPCNT_1, USB_DIEP0TSIZ_XFRSIZ_MASK, USB_DIEPTXF, USB_DIEPx_CTL, USB_DIEPx_TSIZ, USB_DOEP0CTL_EPENA, USB_DOEP0CTL_SD0PID, USB_DOEP0CTL_USBAEP, USB_DOEPx_CTL, USB_DOEPx_TSIZ, and USB_GNPTXFSIZ.

efm32lg_ep_stall_get()

static uint8_t efm32lg_ep_stall_get ( usbd_device *  usbd_dev, uint8_t  addr  )

static

Definition at line 221 of file usb_efm32.c.

References USB_DIEP0CTL_STALL, USB_DIEPx_CTL, USB_DOEP0CTL_STALL, and USB_DOEPx_CTL.

efm32lg_ep_stall_set()

static void efm32lg_ep_stall_set ( usbd_device *  usbd_dev, uint8_t  addr, uint8_t  stall  )

static

Definition at line 190 of file usb_efm32.c.

References USB_DIEP0CTL_SD0PID, USB_DIEP0CTL_STALL, USB_DIEPx_CTL, USB_DOEP0CTL_SD0PID, USB_DOEP0CTL_STALL, and USB_DOEPx_CTL.

efm32lg_ep_write_packet()

static uint16_t efm32lg_ep_write_packet ( usbd_device *  usbd_dev, uint8_t  addr, const void *  buf, uint16_t  len  )

static

Definition at line 251 of file usb_efm32.c.

References USB_DIEP0CTL_CNAK, USB_DIEP0CTL_EPENA, USB_DIEP0TSIZ_PKTCNT, USB_DIEPx_CTL, USB_DIEPx_TSIZ, and USB_FIFOxD.

efm32lg_poll()

static void efm32lg_poll ( usbd_device *  usbd_dev )

static

Definition at line 307 of file usb_efm32.c.

References _usbd_reset(), ENDPOINT_COUNT, USB_DIEP_INT_XFRC, USB_DIEPx_INT, USB_FIFOxD, USB_GINTMSK, USB_GINTMSK_SOFM, USB_GINTSTS, USB_GINTSTS_ENUMDNE, USB_GINTSTS_RXFLVL, USB_GINTSTS_SOF, USB_GINTSTS_USBSUSP, USB_GINTSTS_WKUPINT, USB_GRXSTSP, USB_GRXSTSP_BCNT_MASK, USB_GRXSTSP_EPNUM_MASK, USB_GRXSTSP_PKTSTS_MASK, USB_GRXSTSP_PKTSTS_OUT, and USB_GRXSTSP_PKTSTS_SETUP.

Here is the call graph for this function:

efm32lg_set_address()

static void efm32lg_set_address ( usbd_device *  usbd_dev, uint8_t  addr  )

static

Definition at line 100 of file usb_efm32.c.

References USB_DCFG.

efm32lg_usbd_init()

static usbd_device * efm32lg_usbd_init ( void  )

static

Initialize the USB_FS device controller hardware of the STM32.

Definition at line 55 of file usb_efm32.c.

References _usbd_dev, CMU_CMD, CMU_CMD_USBCCLKSEL_HFCLKNODIV, CMU_HFCORECLKEN0, CMU_HFCORECLKEN0_USB, CMU_HFCORECLKEN0_USBC, CMU_STATUS, CMU_STATUS_USBCHFCLKSEL, efm32lg_usb_driver, USB_CTRL, USB_DAINTMSK, USB_DCFG, USB_DCFG_DSPD, USB_DIEPMSK, USB_DIEPMSK_XFRCM, USB_GAHBCFG, USB_GAHBCFG_GLBLINTRMSK, USB_GINTMSK, USB_GINTMSK_ENUMDNEM, USB_GINTMSK_IEPINT, USB_GINTMSK_RXFLVLM, USB_GINTMSK_USBSUSPM, USB_GINTMSK_WUIM, USB_GINTSTS, USB_GINTSTS_MMIS, USB_GRSTCTL, USB_GRSTCTL_AHBIDL, USB_GRSTCTL_CSRST, USB_GRXFSIZ, USB_GUSBCFG, USB_GUSBCFG_FDMOD, USB_GUSBCFG_TRDT_16BIT, USB_PCGCCTL, USB_ROUTE, USB_ROUTE_DMPUPEN, and USB_ROUTE_PHYPEN.

Variable Documentation

_usbd_dev

struct _usbd_device _usbd_dev

static

Definition at line 52 of file usb_efm32.c.

Referenced by efm32lg_usbd_init().

efm32lg_usb_driver

const struct _usbd_driver efm32lg_usb_driver

Initial value:

= {
        .init = efm32lg_usbd_init,
        .set_address = efm32lg_set_address,
        .ep_setup = efm32lg_ep_setup,
        .ep_reset = efm32lg_endpoints_reset,
        .ep_stall_set = efm32lg_ep_stall_set,
        .ep_stall_get = efm32lg_ep_stall_get,
        .ep_nak_set = efm32lg_ep_nak_set,
        .ep_write_packet = efm32lg_ep_write_packet,
        .ep_read_packet = efm32lg_ep_read_packet,
        .poll = efm32lg_poll,
        .disconnect = efm32lg_disconnect,
        .base_address = USB_BASE,
        .set_address_before_status = 1,
        .rx_fifo_size = RX_FIFO_SIZE,
}

Definition at line 419 of file usb_efm32.c.

Referenced by efm32lg_usbd_init().