USB/CDC Standard I/O (stdio)

Standard I/O (stdio) management component that implements a stdio USB CDC interface on AVR devices.

Modules
	Related Project(s)
	In this section you can find all the projects related to the USB/CDC Standard I/O (stdio).
	Quick Start Guide(s)
	In this section you can find a list of all Quick Start guides related to the USB/CDC Standard I/O (stdio).

Functions
int	_read (int *f)
int	_write (char c, int *f)
void	stdio_usb_disable (void)
	Disables the stdio in USB Serial Mode. More...
bool	stdio_usb_enable (void)
	Enables the stdio in USB Serial Mode. More...
void	stdio_usb_getchar (void volatile *usart, char *data)
	Waits until a character is received, and returns it. More...
void	stdio_usb_init (void)
	Initializes the stdio in USB Serial Mode. More...
int	stdio_usb_putchar (volatile void *usart, char data)
	Sends a character with the USART. More...

Variables
void(*	ptr_get )(void volatile *, char *)
	Pointer to the external low level read function. More...
int(*	ptr_put )(void volatile *, char)
	Pointer to the external low level write function. More...
volatile void *volatile	stdio_base
	Pointer to the base of the USART module instance to use for stdio. More...

int _read

(

int *

f

)

int _write	(	char	c,
		int *	f
	)

void stdio_usb_disable

(

void

)

Disables the stdio in USB Serial Mode.

Returns

Nothing.

References stdio_usb_interface_enable.

Referenced by dtr_cb().

bool stdio_usb_enable

(

void

)

Enables the stdio in USB Serial Mode.

Returns

1 if function was successfully done, otherwise 0.

References stdio_usb_interface_enable.

Referenced by dtr_cb().

void stdio_usb_getchar	(	void volatile *	usart,
		char *	data
	)

Waits until a character is received, and returns it.

Parameters

usart	Base address of the USART instance.
data	Data to read

Returns

Nothing.

References stdio_usb_interface_enable, and udi_cdc_getc().

Referenced by stdio_usb_init().

void stdio_usb_init

(

void

)

Initializes the stdio in USB Serial Mode.

Returns

Nothing.

References _read(), _write(), NULL, ptr_get, ptr_put, stdio_base, stdio_usb_getchar(), stdio_usb_putchar(), and udc_start().

Referenced by main(), and sio2host_init().

int stdio_usb_putchar	(	volatile void *	usart,
		char	data
	)

Sends a character with the USART.

Parameters

usart	Base address of the USART instance.
data	Character to write.

Returns

Status.

Return values

0	The character was written.
-1	The function timed out before the transmitter became ready.

References stdio_usb_interface_enable, and udi_cdc_putc().

Referenced by stdio_usb_init().

void(* ptr_get)(void volatile *, char *)

Pointer to the external low level read function.

Referenced by _read(), stdio_serial_init(), and stdio_usb_init().

int(* ptr_put)(void volatile *, char)

Pointer to the external low level write function.

Referenced by _write(), stdio_serial_init(), and stdio_usb_init().

volatile void* volatile stdio_base

Pointer to the base of the USART module instance to use for stdio.