Driver for the cc2538 USB controller. More...

Files
file	arch/cpu/cc2538/dev/usb-regs.h
	Header file with declarations for the cc2538 USB registers.
file	arch/cpu/cc2538/usb/cdc-acm-descriptors.c
	CDC-ACM mode USB descriptor for the cc2538 USB controller.
file	arch/cpu/cc2538/usb/usb-arch.c
	Arch-specific routines for the cc2538 USB controller.
file	arch/cpu/cc2538/usb/usb-serial.c
	Platform process which implements a UART-like functionality over the cc2538's USB hardware.
file	arch/cpu/cc2538/usb/usb-serial.h
	Header file for cc2538's UART-like I/O over USB.

Functions
static uint8_t	ep0_tx (void)
static uint8_t	ep_tx (uint8_t ep_hw)
static void	in_ep_interrupt_handler (uint8_t ep_hw)
static void	out_ep_interrupt_handler (uint8_t ep_hw)
static void	ep0_interrupt_handler (void)
static void	read_hw_buffer (uint8_t *to, uint8_t hw_ep, unsigned int len)
static void	write_hw_buffer (uint8_t hw_ep, uint8_t *from, unsigned int len)
static bool	permit_pm1 (void)
void	usb_arch_setup (void)
void	usb_submit_recv_buffer (uint8_t addr, usb_buffer *buffer)
void	usb_submit_xmit_buffer (uint8_t addr, usb_buffer *buffer)
static void	ep0_setup (void)
static void	in_ep_setup (uint8_t addr)
static void	out_ep_setup (uint8_t addr)
static void	ep_setup (uint8_t addr)
static void	ep0_dis (void)
static void	in_ep_dis (uint8_t addr)
static void	out_ep_dis (uint8_t addr)
void	usb_arch_disable_endpoint (uint8_t addr)
static void	set_stall (uint8_t addr, uint8_t stall)
void	usb_arch_set_address (uint8_t addr)
int	usb_arch_send_pending (uint8_t addr)
static uint8_t	ep0_get_setup_pkt (void)
static uint8_t	ep0_get_data_pkt (void)
static uint8_t	ep_get_data_pkt (uint8_t ep_hw)
void	usb_isr (void)
void	usb_serial_flush (void)
	Immediately transmit the content of Serial-over-USB TX buffers.
void	usb_serial_writeb (uint8_t b)
	Write a byte over USB.
void	usb_serial_set_input (int(*input)(unsigned char c))
	Set an input hook for bytes received over USB.
void	usb_serial_init (void)
	Initialise the Serial-over-USB process.

USB Register Offsets
#define	USB_ADDR 0x40089000
	Function address.
#define	USB_POW 0x40089004
	Power/Control register.
#define	USB_IIF 0x40089008
	IN EPs and EP0 interrupt flags.
#define	USB_OIF 0x40089010
	OUT endpoint interrupt flags.
#define	USB_CIF 0x40089018
	Common USB interrupt flags.
#define	USB_IIE 0x4008901C
	IN EPs and EP0 interrupt mask.
#define	USB_OIE 0x40089024
	Out EPs interrupt-enable mask.
#define	USB_CIE 0x4008902C
	Common USB interrupt mask.
#define	USB_FRML 0x40089030
	Current frame number (low byte).
#define	USB_FRMH 0x40089034
	Current frame number (high).
#define	USB_INDEX 0x40089038
	Current endpoint index register.
#define	USB_CTRL 0x4008903C
	USB control register.
#define	USB_MAXI 0x40089040
	MAX packet size for IN EPs{1-5}.
#define	USB_CS0_CSIL 0x40089044
	EP0 Control and Status or IN EPs control and status (low).
#define	USB_CS0 0x40089044
	EP0 Control and Status (Alias for USB_CS0_CSIL).
#define	USB_CSIL 0x40089044
	IN EPs control and status (low) (Alias for USB_CS0_CSIL).
#define	USB_CSIH 0x40089048
	IN EPs control and status (high).
#define	USB_MAXO 0x4008904C
	MAX packet size for OUT EPs.
#define	USB_CSOL 0x40089050
	OUT EPs control and status (low).
#define	USB_CSOH 0x40089054
	OUT EPs control and status (high).
#define	USB_CNT0_CNTL 0x40089058
	Number of RX bytes in EP0 FIFO or number of bytes in EP{1-5} OUT FIFO (low).
#define	USB_CNT0 0x40089058
	Number of RX bytes in EP0 FIFO (Alias for USB_CNT0_CNTL).
#define	USB_CNTL 0x40089058
	Number of bytes in EP{1-5} OUT FIFO (low) (Alias for USB_CNT0_CNTL).
#define	USB_CNTH 0x4008905C
	Number of bytes in EP{1-5} OUT FIFO (high).
#define	USB_F0 0x40089080
	Endpoint-0 FIFO.
#define	USB_F1 0x40089088
	Endpoint-1 FIFO.
#define	USB_F2 0x40089090
	Endpoint-2 FIFO.
#define	USB_F3 0x40089098
	Endpoint-3 FIFO.
#define	USB_F4 0x400890A0
	Endpoint-4 FIFO.
#define	USB_F5 0x400890A8
	Endpoint-5 FIFO.

USB_ADDR Register Bit-Masks
#define	USB_ADDR_UPDATE 0x00000080
	1 while address updating
#define	USB_ADDR_USBADDR 0x0000007F
	Device address.

USB_POW Register Bit-Masks
#define	USB_POW_ISO_WAIT_SOF 0x00000080
	1 until SOF received - ISO only
#define	USB_POW_RST 0x00000008
	1 During reset signaling
#define	USB_POW_RESUME 0x00000004
	Remote wakeup resume signalling.
#define	USB_POW_SUSPEND 0x00000002
	Suspend mode entered.
#define	USB_POW_SUSPEND_EN 0x00000001
	Suspend enable.

USB_IIF Register Bit-Masks
#define	USB_IIF_INEP5IF 0x00000020
	IN EP5 Interrupt flag.
#define	USB_IIF_INEP4IF 0x00000010
	IN EP4 Interrupt flag.
#define	USB_IIF_INEP3IF 0x00000008
	IN EP3 Interrupt flag.
#define	USB_IIF_INEP2IF 0x00000004
	IN EP2 Interrupt flag.
#define	USB_IIF_INEP1IF 0x00000002
	IN EP1 Interrupt flag.
#define	USB_IIF_EP0IF 0x00000001
	EP0 Interrupt flag.

USB_OIF Register Bit-Masks
#define	USB_OIF_OUTEP5IF 0x00000020
	OUT EP5 Interrupt flag.
#define	USB_OIF_OUTEP4IF 0x00000010
	OUT EP4 Interrupt flag.
#define	USB_OIF_OUTEP3IF 0x00000008
	OUT EP3 Interrupt flag.
#define	USB_OIF_OUTEP2IF 0x00000004
	OUT EP2 Interrupt flag.
#define	USB_OIF_OUTEP1IF 0x00000002
	OUT EP1 Interrupt flag.

USB_CIF Register Bit-Masks
#define	USB_CIF_SOFIF 0x00000008
	Start-of-frame interrupt flag.
#define	USB_CIF_RSTIF 0x00000004
	Reset interrupt flag.
#define	USB_CIF_RESUMEIF 0x00000002
	Resume interrupt flag.
#define	USB_CIF_SUSPENDIF 0x00000001
	Suspend interrupt flag.

USB_IIE Register Bit-Masks
#define	USB_IIE_INEP5IE 0x00000020
	IN EP5 interrupt enable.
#define	USB_IIE_INEP4IE 0x00000010
	IN EP4 interrupt enable.
#define	USB_IIE_INEP3IE 0x00000008
	IN EP3 interrupt enable.
#define	USB_IIE_INEP2IE 0x00000004
	IN EP2 interrupt enable.
#define	USB_IIE_INEP1IE 0x00000002
	IN EP1 interrupt enable.
#define	USB_IIE_EP0IE 0x00000001
	EP0 interrupt enable.

USB_OIE Register Bit-Masks
#define	USB_OIE_OUTEP5IE 0x00000020
	OUT EP5 interrupt enable.
#define	USB_OIE_OUTEP4IE 0x00000010
	OUT EP4 interrupt enable.
#define	USB_OIE_OUTEP3IE 0x00000008
	OUT EP3 interrupt enable.
#define	USB_OIE_OUTEP2IE 0x00000004
	OUT EP2 interrupt enable.
#define	USB_OIE_OUTEP1IE 0x00000002
	OUT EP1 interrupt enable.

USB_CIE Register Bit-Masks
#define	USB_CIE_SOFIE 0x00000008
	Start-of-frame interrupt enable.
#define	USB_CIE_RSTIE 0x00000004
	Reset interrupt enable.
#define	USB_CIE_RESUMEIE 0x00000002
	Resume interrupt enable.
#define	USB_CIE_SUSPENDIE 0x00000001
	Suspend interrupt enable.

USB_FRML Register Bit-Masks
#define	USB_FRML_FRAME 0x000000FF
	Low byte of 11-bit frame number.

USB_FRMH Register Bit-Masks
#define	USB_FRMH_FRAME 0x00000007
	3 MSBs of 11-bit frame number

USB_INDEX Register Bit-Masks
#define	USB_INDEX_USBINDEX 0x0000000F
	Endpoint selected.

USB_CTRL Register Bit-Masks
#define	USB_CTRL_PLL_LOCKED 0x00000080
	PLL locked status.
#define	USB_CTRL_PLL_EN 0x00000002
	48-MHz USB PLL enable
#define	USB_CTRL_USB_EN 0x00000001
	USB enable.

USB_MAXI Register Bit-Masks
#define	USB_MAXI_USBMAXI 0x000000FF
	Maximum packet size.

USB_CS0_CSIL Register Bit-Masks
#define	USB_CS0_CLR_SETUP_END 0x00000080
	Listed as reserved in the UG, is this right?
#define	USB_CS0_CSIL_CLR_OUTPKT_RDY_or_CLR_DATA_TOG 0x00000040
	Deassert OUTPKT_RDY bit of this register or reset the data toggle to 0.
#define	USB_CS0_CSIL_SEND_STALL_or_SENT_STALL 0x00000020
	Set this bit to 1 to terminate the current transaction or is set when a STALL handshake has been sent.
#define	USB_CS0_CSIL_SETUP_END_or_SEND_STALL 0x00000010
	Is set if the control transfer ends due to a premature end-of-control transfer or set to 1 to make the USB controller reply with a STALL handshake when receiving IN tokens.
#define	USB_CS0_CSIL_DATA_END_or_FLUSH_PACKET 0x00000008
	Signal the end of a data transfer or set to 1 to flush next packet that is ready to transfer from the IN FIFO.
#define	USB_CS0_CSIL_SENT_STALL_or_UNDERRUN 0x00000004
	Set when a STALL handshake is sent or set if an IN token is received when INPKT_RDY = 0, and a zero-length data packet is transmitted in response to the IN token.
#define	USB_CS0_CSIL_INPKT_RDY_or_PKT_PRESENT 0x00000002
	Data packet has been loaded into the EP0 FIFO or at least one packet in the IN FIFO.
#define	USB_CS0_CSIL_OUTPKT_RDY_or_INPKT_RDY 0x00000001
	Data packet received or data packet has been loaded into the IN FIFO.

USB_CSIH Register Bit-Masks
#define	USB_CSIH_AUTISET 0x00000080
	Auto-assert INPKT_RDY.
#define	USB_CSIH_ISO 0x00000040
	Selects IN endpoint type.
#define	USB_CSIH_FORCE_DATA_TOG 0x00000008
	IN EP force data toggle switch.
#define	USB_CSIH_IN_DBL_BUF 0x00000001
	Double buffering enable (IN FIFO).

USB_MAXO Register Bit-Masks
#define	USB_MAXO_USBMAXO 0x000000FF
	Maximum packet size.

USB_CSOL Register Bit-Masks
#define	USB_CSOL_CLR_DATA_TOG 0x00000080
	Setting resets data toggle to 0.
#define	USB_CSOL_SENT_STALL 0x00000040
	STALL handshake sent.
#define	USB_CSOL_SEND_STALL 0x00000020
	Reply with STALL to OUT tokens.
#define	USB_CSOL_FLUSH_PACKET 0x00000010
	Flush next packet read from OUT FIFO.
#define	USB_CSOL_DATA_ERROR 0x00000008
	CRC or bit-stuff error in RX packet.
#define	USB_CSOL_OVERRUN 0x00000004
	OUT packet can not be loaded into OUT FIFO.
#define	USB_CSOL_FIFO_FULL 0x00000002
	OUT FIFO full.
#define	USB_CSOL_OUTPKT_RDY 0x00000001
	OUT packet read in OUT FIFO.

USB_CSOH Register Bit-Masks
#define	USB_CSOH_AUTOCLEAR 0x00000080
	Auto-clear OUTPKT_RDY.
#define	USB_CSOH_ISO 0x00000040
	Selects OUT endpoint type.
#define	USB_CSOH_OUT_DBL_BUF 0x00000001
	Double buffering enable (OUT FIFO).

USB_CNT0_CNTL Register Bit-Masks
#define	USB_CNT0_CNTL_USBCNT0 0x0000003F
	Number of RX bytes in EP0 FIFO.
#define	USB_CNT0_CNTL_USBCNT_5_0 0x0000003F
	6 LSBs of the number of RX bytes in EP1-5 OUT FIFO

USB_CNTH Register Bit-Masks
#define	USB_CNTH_USBCNT 0x00000007
	3 MSBs of RX byte number

USB_F[0-5] Register Bit-Masks
#define	USB_F0_USBF0 0x000000FF
	Endpoint 0 FIFO mask.
#define	USB_F1_USBF1 0x000000FF
	Endpoint 1 FIFO mask.
#define	USB_F2_USBF2 0x000000FF
	Endpoint 2 FIFO mask.
#define	USB_F3_USBF3 0x000000FF
	Endpoint 3 FIFO mask.
#define	USB_F4_USBF4 0x000000FF
	Endpoint 4 FIFO mask.
#define	USB_F5_USBF5 0x000000FF
	Endpoint 5 FIFO mask.

Detailed Description

Driver for the cc2538 USB controller.

We use the USB core in cpu/cc253x/usb which is known to work on Linux as well as on OS X.

Macro Definition Documentation

◆ USB_CS0_CSIL_SENT_STALL_or_UNDERRUN

#define USB_CS0_CSIL_SENT_STALL_or_UNDERRUN 0x00000004

Set when a STALL handshake is sent or set if an IN token is received when INPKT_RDY = 0, and a zero-length data packet is transmitted in response to the IN token.

In bulk/interrupt mode, this bit is set when a NAK is returned in response to an IN token

Definition at line 260 of file usb-regs.h.

Function Documentation

◆ ep0_dis()

void ep0_dis ( void )

static

< IN EPs and EP0 interrupt mask

< EP0 interrupt enable

< EP0 Control and Status (Alias for USB_CS0_CSIL)

Definition at line 600 of file usb-arch.c.

References USB_CS0, USB_IIE, and USB_IIE_EP0IE.

Referenced by usb_arch_disable_endpoint().

◆ ep0_get_data_pkt()

uint8_t ep0_get_data_pkt ( void )

static

< Number of RX bytes in EP0 FIFO (Alias for USB_CNT0_CNTL)

< Endpoint-0 FIFO

< EP0 Control and Status (Alias for USB_CS0_CSIL)

Definition at line 924 of file usb-arch.c.

References USB_CNT0, USB_CS0, and USB_F0.

Referenced by ep0_interrupt_handler().

◆ ep0_get_setup_pkt()

uint8_t ep0_get_setup_pkt ( void )

static

< EP0 Control and Status (Alias for USB_CS0_CSIL)

Definition at line 890 of file usb-arch.c.

References read_hw_buffer(), and USB_CS0.

Referenced by ep0_interrupt_handler().

◆ ep0_interrupt_handler()

void ep0_interrupt_handler ( void )

static

< Current endpoint index register

< EP0 Control and Status (Alias for USB_CS0_CSIL)

Definition at line 1048 of file usb-arch.c.

References ep0_get_data_pkt(), ep0_get_setup_pkt(), ep0_tx(), USB_CS0, USB_CS0_CLR_SETUP_END, and USB_INDEX.

Referenced by usb_isr(), and usb_submit_recv_buffer().

◆ ep0_setup()

void ep0_setup ( void )

static

< IN EPs and EP0 interrupt mask

< EP0 interrupt enable

Definition at line 483 of file usb-arch.c.

References USB_IIE, and USB_IIE_EP0IE.

Referenced by ep_setup().

◆ ep0_tx()

uint8_t ep0_tx ( void )

static

< EP0 Control and Status (Alias for USB_CS0_CSIL)

Definition at line 974 of file usb-arch.c.

References USB_CS0, and write_hw_buffer().

Referenced by ep0_interrupt_handler(), and usb_submit_xmit_buffer().

◆ ep_get_data_pkt()

uint8_t ep_get_data_pkt ( uint8_t ep_hw )

static

< OUT EPs control and status (low)

< Reply with STALL to OUT tokens

< OUT EPs control and status (low)

< Reply with STALL to OUT tokens

< Number of bytes in EP{1-5} OUT FIFO (low) (Alias for USB_CNT0_CNTL)

< Number of bytes in EP{1-5} OUT FIFO (high)

< OUT EPs control and status (low)

< OUT packet read in OUT FIFO

Definition at line 1151 of file usb-arch.c.

References USB_CNTH, USB_CNTL, USB_CSOL, USB_CSOL_OUTPKT_RDY, and USB_CSOL_SEND_STALL.

Referenced by out_ep_interrupt_handler().

◆ ep_setup()

void ep_setup ( uint8_t addr )

static

< Current endpoint index register

Definition at line 527 of file usb-arch.c.

References addr, ep0_setup(), in_ep_setup(), out_ep_setup(), and USB_INDEX.

◆ ep_tx()

uint8_t ep_tx ( uint8_t ep_hw )

static

< IN EPs control and status (low) (Alias for USB_CS0_CSIL)

Definition at line 1089 of file usb-arch.c.

References USB_CSIL, and write_hw_buffer().

Referenced by in_ep_interrupt_handler(), and usb_submit_xmit_buffer().

◆ in_ep_dis()

void in_ep_dis ( uint8_t addr )

static

< MAX packet size for IN EPs{1-5}

< IN EPs and EP0 interrupt mask

< IN EPs control and status (low) (Alias for USB_CS0_CSIL)

Definition at line 608 of file usb-arch.c.

References addr, USB_CSIL, USB_IIE, and USB_MAXI.

Referenced by usb_arch_disable_endpoint().

◆ in_ep_interrupt_handler()

void in_ep_interrupt_handler ( uint8_t ep_hw )

static

< Current endpoint index register

< IN EPs control and status (low) (Alias for USB_CS0_CSIL)

Definition at line 1217 of file usb-arch.c.

References ep_tx(), USB_CSIL, and USB_INDEX.

Referenced by usb_isr().

◆ in_ep_setup()

void in_ep_setup ( uint8_t addr )

static

< IN EPs and EP0 interrupt mask

< MAX packet size for IN EPs{1-5}

< IN EPs control and status (high)

< Selects OUT endpoint type

< IN EPs control and status (high)

< Selects OUT endpoint type

Definition at line 489 of file usb-arch.c.

References addr, USB_CSIH, USB_CSOH_ISO, USB_IIE, and USB_MAXI.

Referenced by ep_setup().

◆ out_ep_dis()

void out_ep_dis ( uint8_t addr )

static

< MAX packet size for OUT EPs

< Out EPs interrupt-enable mask

< OUT EPs control and status (low)

Definition at line 618 of file usb-arch.c.

References addr, USB_CSOL, USB_MAXO, and USB_OIE.

Referenced by usb_arch_disable_endpoint().

◆ out_ep_interrupt_handler()

void out_ep_interrupt_handler ( uint8_t ep_hw )

static

< Current endpoint index register

< OUT EPs control and status (low)

< STALL handshake sent

< OUT EPs control and status (low)

< STALL handshake sent

< OUT packet can not be loaded into OUT FIFO

< OUT EPs control and status (low)

< OUT packet can not be loaded into OUT FIFO

< OUT packet read in OUT FIFO

Definition at line 1188 of file usb-arch.c.

References ep_get_data_pkt(), USB_CSOL, USB_CSOL_OUTPKT_RDY, USB_CSOL_OVERRUN, USB_CSOL_SENT_STALL, and USB_INDEX.

Referenced by usb_isr(), and usb_submit_recv_buffer().

◆ out_ep_setup()

void out_ep_setup ( uint8_t addr )

static

< Out EPs interrupt-enable mask

< MAX packet size for OUT EPs

< OUT EPs control and status (high)

< Selects OUT endpoint type

< OUT EPs control and status (high)

< Selects OUT endpoint type

Definition at line 508 of file usb-arch.c.

References addr, USB_CSOH, USB_CSOH_ISO, USB_MAXO, and USB_OIE.

Referenced by ep_setup().

◆ permit_pm1()

bool permit_pm1 ( void )

static

< USB control register

Definition at line 333 of file usb-arch.c.

References USB_CTRL.

◆ read_hw_buffer()

void read_hw_buffer	(	uint8_t *	to,
		uint8_t	hw_ep,
		unsigned int	len )

static

< Endpoint-0 FIFO

Definition at line 253 of file usb-arch.c.

References udma_channel_enable(), udma_channel_get_mode(), udma_channel_sw_request(), udma_set_channel_control_word(), udma_set_channel_dst(), udma_set_channel_src(), udma_xfer_size, USB_ARCH_CONF_DMA, USB_ARCH_CONF_RX_DMA_CHAN, and USB_F0.

Referenced by ep0_get_setup_pkt().

◆ set_stall()

void set_stall	(	uint8_t	addr,
		uint8_t	stall )

static

< Current endpoint index register

< EP0 Control and Status (Alias for USB_CS0_CSIL)

< IN EPs control and status (low) (Alias for USB_CS0_CSIL)

< OUT EPs control and status (low)

< Reply with STALL to OUT tokens

< OUT EPs control and status (low)

< Reply with STALL to OUT tokens

Definition at line 671 of file usb-arch.c.

References addr, USB_CS0, USB_CSIL, USB_CSOL, USB_CSOL_SEND_STALL, and USB_INDEX.

◆ usb_arch_disable_endpoint()

void usb_arch_disable_endpoint ( uint8_t addr )

< Current endpoint index register

Definition at line 628 of file usb-arch.c.

References addr, ep0_dis(), in_ep_dis(), out_ep_dis(), and USB_INDEX.

◆ usb_arch_send_pending()

int usb_arch_send_pending ( uint8_t addr )

< Current endpoint index register

< EP0 Control and Status (Alias for USB_CS0_CSIL)

< IN EPs control and status (low) (Alias for USB_CS0_CSIL)

Definition at line 781 of file usb-arch.c.

References addr, USB_CS0, USB_CSIL, and USB_INDEX.

◆ usb_arch_set_address()

void usb_arch_set_address ( uint8_t addr )

< Function address

Definition at line 775 of file usb-arch.c.

References addr, and USB_ADDR.

◆ usb_arch_setup()

void usb_arch_setup ( void )

< USB control register

< USB enable

< 48-MHz USB PLL enable

< USB control register

< PLL locked status

< IN EPs and EP0 interrupt mask

< Out EPs interrupt-enable mask

Definition at line 344 of file usb-arch.c.

References GPIO_SET_OUTPUT, GPIO_SET_PIN, udma_channel_mask_set(), USB_ARCH_CONF_DMA, USB_ARCH_CONF_RX_DMA_CHAN, USB_ARCH_CONF_TX_DMA_CHAN, USB_CTRL, USB_CTRL_PLL_EN, USB_CTRL_PLL_LOCKED, USB_CTRL_USB_EN, USB_IIE, USB_IRQn, and USB_OIE.

◆ usb_isr()

void usb_isr ( void )

< IN EPs and EP0 interrupt flags

< IN EPs and EP0 interrupt mask

< OUT endpoint interrupt flags

< Out EPs interrupt-enable mask

< Common USB interrupt flags

< Common USB interrupt mask

< EP0 Interrupt flag

< Reset interrupt flag

< Resume interrupt flag

< Suspend interrupt flag

Definition at line 1247 of file usb-arch.c.

References ep0_interrupt_handler(), in_ep_interrupt_handler(), out_ep_interrupt_handler(), USB_CIE, USB_CIF, USB_CIF_RESUMEIF, USB_CIF_RSTIF, USB_CIF_SUSPENDIF, USB_IIE, USB_IIF, USB_IIF_EP0IF, USB_OIE, and USB_OIF.

◆ usb_serial_flush()

void usb_serial_flush ( void )

Immediately transmit the content of Serial-over-USB TX buffers.

See also: usb_serial_writeb()

Definition at line 234 of file usb-serial.c.

References usb_submit_xmit_buffer().

Referenced by usb_serial_writeb().

◆ usb_serial_set_input()

void usb_serial_set_input ( int(* input )(unsigned char c) )

Set an input hook for bytes received over USB.

Parameters

input A pointer to a function to be called when a byte is received

Definition at line 295 of file usb-serial.c.

Referenced by platform_init_stage_two(), and platform_init_stage_two().

◆ usb_serial_writeb()

void usb_serial_writeb ( uint8_t b )

Write a byte over USB.

Parameters

b The byte

See also: usb_serial_flush()

USB-Serial output is buffered. The buffer is actually submitted to the USB controller for transmission when:

It is full or
The code explicitly calls usb_serial_flush()

Definition at line 250 of file usb-serial.c.

References usb_serial_flush().

◆ usb_submit_recv_buffer()

void usb_submit_recv_buffer	(	uint8_t	addr,
		usb_buffer *	buffer )

< Current endpoint index register

< EP0 Control and Status (Alias for USB_CS0_CSIL)

< OUT EPs control and status (low)

< OUT packet read in OUT FIFO

Definition at line 384 of file usb-arch.c.

References addr, ep0_interrupt_handler(), out_ep_interrupt_handler(), USB_CS0, USB_CSOL, USB_CSOL_OUTPKT_RDY, and USB_INDEX.

◆ usb_submit_xmit_buffer()

void usb_submit_xmit_buffer	(	uint8_t	addr,
		usb_buffer *	buffer )

< Current endpoint index register

< EP0 Control and Status (Alias for USB_CS0_CSIL)

< Current endpoint index register

< EP0 Control and Status (Alias for USB_CS0_CSIL)

< Current endpoint index register

Definition at line 428 of file usb-arch.c.

References addr, ep0_tx(), ep_tx(), USB_CS0, and USB_INDEX.

Referenced by usb_serial_flush().

◆ write_hw_buffer()

void write_hw_buffer	(	uint8_t	hw_ep,
		uint8_t *	from,
		unsigned int	len )

static

< Endpoint-0 FIFO

Definition at line 283 of file usb-arch.c.

References udma_channel_enable(), udma_channel_get_mode(), udma_channel_sw_request(), udma_set_channel_control_word(), udma_set_channel_dst(), udma_set_channel_src(), udma_xfer_size, USB_ARCH_CONF_DMA, USB_ARCH_CONF_TX_DMA_CHAN, and USB_F0.

Referenced by ep0_tx(), and ep_tx().

Files

Functions

USB Register Offsets

USB_ADDR Register Bit-Masks

USB_POW Register Bit-Masks

USB_IIF Register Bit-Masks

USB_OIF Register Bit-Masks

USB_CIF Register Bit-Masks

USB_IIE Register Bit-Masks

USB_OIE Register Bit-Masks

USB_CIE Register Bit-Masks

USB_FRML Register Bit-Masks

USB_FRMH Register Bit-Masks

USB_INDEX Register Bit-Masks

USB_CTRL Register Bit-Masks

USB_MAXI Register Bit-Masks

USB_CS0_CSIL Register Bit-Masks

USB_CSIH Register Bit-Masks

USB_MAXO Register Bit-Masks

USB_CSOL Register Bit-Masks

USB_CSOH Register Bit-Masks

USB_CNT0_CNTL Register Bit-Masks

USB_CNTH Register Bit-Masks

USB_F[0-5] Register Bit-Masks

Detailed Description

Macro Definition Documentation

◆ USB_CS0_CSIL_SENT_STALL_or_UNDERRUN

Function Documentation

◆ ep0_dis()

◆ ep0_get_data_pkt()

◆ ep0_get_setup_pkt()

◆ ep0_interrupt_handler()

◆ ep0_setup()

◆ ep0_tx()

◆ ep_get_data_pkt()

◆ ep_setup()

◆ ep_tx()

◆ in_ep_dis()

◆ in_ep_interrupt_handler()

◆ in_ep_setup()

◆ out_ep_dis()

◆ out_ep_interrupt_handler()

◆ out_ep_setup()

◆ permit_pm1()

◆ read_hw_buffer()

◆ set_stall()

◆ usb_arch_disable_endpoint()

◆ usb_arch_send_pending()

◆ usb_arch_set_address()

◆ usb_arch_setup()

◆ usb_isr()

◆ usb_serial_flush()

◆ usb_serial_set_input()

◆ usb_serial_writeb()

◆ usb_submit_recv_buffer()

◆ usb_submit_xmit_buffer()

◆ write_hw_buffer()