USBUS CDC ACM - USBUS CDC abstract control model

USBUS CDC ACM interface module. More...

Detailed Description

USBUS CDC ACM interface module.

Modules
	USBUS CDC ACM compile time configurations

Files
file	acm.h
	Interface and definitions for USB CDC ACM type interfaces in USBUS.

Data Structures
struct	usbus_cdcacm_device
	USBUS CDC ACM context struct. More...

Macros
#define	USBUS_CDC_ACM_INT_EP_SIZE   (8)
	USBUS CDC ACM interrupt endpoint size.
#define	USBUS_CDC_ACM_EP_IN_REQUIRED_NUMOF   2
	Number of IN EPs required for the CDC ACM interface.
#define	USBUS_CDC_ACM_EP_OUT_REQUIRED_NUMOF   1
	Number of Out EPs required for the CDC ACM interface.

Typedefs
typedef struct usbus_cdcacm_device	usbus_cdcacm_device_t
	USBUS CDC ACM context struct forward declaration.
typedef void(*	usbus_cdcacm_cb_t) (usbus_cdcacm_device_t *cdcacm, uint8_t *data, size_t len)
	CDC ACM data callback. More...
typedef int(*	usbus_cdcacm_coding_cb_t) (usbus_cdcacm_device_t *cdcacm, uint32_t baud, uint8_t bits, uint8_t parity, uint8_t stop)
	CDC ACM line coding callback. More...

Enumerations
enum	usbus_cdcacm_line_state_t { USBUS_CDC_ACM_LINE_STATE_DISCONNECTED , USBUS_CDC_ACM_LINE_STATE_DTE }
	CDC ACM line state as reported by the host computer. More...

Functions
void	usbus_cdc_acm_init (usbus_t *usbus, usbus_cdcacm_device_t *cdcacm, usbus_cdcacm_cb_t cb, usbus_cdcacm_coding_cb_t coding_cb, uint8_t *buf, size_t len)
	Initialize an USBUS CDC ACM interface. More...
size_t	usbus_cdc_acm_submit (usbus_cdcacm_device_t *cdcacm, const uint8_t *buf, size_t len)
	Submit bytes to the CDC ACM handler. More...
void	usbus_cdc_acm_flush (usbus_cdcacm_device_t *cdcacm)
	Flush the buffer to the USB host. More...
void	usbus_cdc_acm_set_coding_cb (usbus_cdcacm_device_t *cdcacm, usbus_cdcacm_coding_cb_t coding_cb)
	Set the callback for control settings. More...

Typedef Documentation

usbus_cdcacm_cb_t

typedef void(* usbus_cdcacm_cb_t) (usbus_cdcacm_device_t *cdcacm, uint8_t *data, size_t len)

CDC ACM data callback.

Callback for received data from the USB host

Parameters

[in]	cdcacm	CDC ACM handler context
[in]	data	ptr to the data
[in]	len	Length of the received data

Definition at line 130 of file acm.h.

usbus_cdcacm_coding_cb_t

typedef int(* usbus_cdcacm_coding_cb_t) (usbus_cdcacm_device_t *cdcacm, uint32_t baud, uint8_t bits, uint8_t parity, uint8_t stop)

CDC ACM line coding callback.

Callback for received line coding request from the USB host

Parameters

[in]	cdcacm	CDC ACM handler context
[in]	baud	requested baud rate
[in]	bits	requested number of data bits
[in]	parity	requested parity
[in]	stop	requested number of stop bits

Returns

0 when the mode is available

negative if the mode is not available

Definition at line 147 of file acm.h.

Enumeration Type Documentation

usbus_cdcacm_line_state_t

enum usbus_cdcacm_line_state_t

CDC ACM line state as reported by the host computer.

Enumerator
USBUS_CDC_ACM_LINE_STATE_DISCONNECTED	No DTE connected.
USBUS_CDC_ACM_LINE_STATE_DTE	DTE (e.g. a personal computer) is present and connected

Definition at line 104 of file acm.h.

Function Documentation

usbus_cdc_acm_flush()

void usbus_cdc_acm_flush

(

usbus_cdcacm_device_t *

cdcacm

)

Flush the buffer to the USB host.

Parameters

[in]

cdcacm

USBUS CDC ACM handler context

usbus_cdc_acm_init()

void usbus_cdc_acm_init	(	usbus_t *	usbus,
		usbus_cdcacm_device_t *	cdcacm,
		usbus_cdcacm_cb_t	cb,
		usbus_cdcacm_coding_cb_t	coding_cb,
		uint8_t *	buf,
		size_t	len
	)

Initialize an USBUS CDC ACM interface.

Parameters

[in]	usbus	USBUS context to register with
[in]	cdcacm	USBUS CDC ACM handler
[in]	cb	Callback for data from the USB interface
[in]	coding_cb	Callback for control settings
[in]	buf	Buffer for data to the USB interface
[in]	len	Size in bytes of the buffer

usbus_cdc_acm_set_coding_cb()

void usbus_cdc_acm_set_coding_cb	(	usbus_cdcacm_device_t *	cdcacm,
		usbus_cdcacm_coding_cb_t	coding_cb
	)

Set the callback for control settings.

Interrupts are disabled during update to ensure thread safety

Parameters

[in]	cdcacm	USBUS CDC ACM handler context
[in]	coding_cb	Callback for control settings

usbus_cdc_acm_submit()

size_t usbus_cdc_acm_submit	(	usbus_cdcacm_device_t *	cdcacm,
		const uint8_t *	buf,
		size_t	len
	)

Submit bytes to the CDC ACM handler.

Parameters

[in]	cdcacm	USBUS CDC ACM handler context
[in]	buf	buffer to submit
[in]	len	length of the submitted buffer

Returns

Number of bytes added to the CDC ACM ring buffer