common/services/usb/class/cdc/device/example/main.c File Reference

CDC Application Main functions.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include "conf_usb.h"
#include "ui.h"
#include "uart.h"

Functions
int	main (void)
	Main function. Execution starts here. More...
void	main_cdc_disable (uint8_t port)
	Closes the communication port This is called by CDC interface when USB Host disable it. More...
bool	main_cdc_enable (uint8_t port)
	Opens the communication port This is called by CDC interface when USB Host enable it. More...
void	main_cdc_set_dtr (uint8_t port, bool b_enable)
	Save new DTR state to change led behavior. The DTR notify that the terminal have open or close the communication port. More...
void	main_resume_action (void)
	Called by UDD when the USB line exit of suspend state. More...
void	main_sof_action (void)
	Called when a start of frame is received on USB line. More...
void	main_suspend_action (void)
	Enters the application in low power mode Callback called when USB host sets USB line in suspend state. More...

Variables
static volatile bool	main_b_cdc_enable = false

int main

(

void

)

Main function. Execution starts here.

References board_init(), cpu_irq_enable, irq_initialize_vectors, sleepmgr_enter_sleep(), sleepmgr_init(), sysclk_init(), udc_start(), ui_init(), and ui_powerdown().

void main_cdc_disable

(

uint8_t

port

)

Closes the communication port This is called by CDC interface when USB Host disable it.

References main_b_cdc_enable, and uart_close().

bool main_cdc_enable

(

uint8_t

port

)

Opens the communication port This is called by CDC interface when USB Host enable it.

Return values

true	if cdc startup is successfully done

References main_b_cdc_enable, and uart_open().

void main_cdc_set_dtr	(	uint8_t	port,
		bool	b_enable
	)

Save new DTR state to change led behavior. The DTR notify that the terminal have open or close the communication port.

References ui_com_close(), and ui_com_open().

void main_resume_action

(

void

)

Called by UDD when the USB line exit of suspend state.

Turn on a led to notify active mode Called when the USB line is resumed from the suspend state.

References ui_wakeup().

void main_sof_action

(

void

)

Called when a start of frame is received on USB line.

Manages the leds behaviors Called when a start of frame is received on USB line each 1ms.

References main_b_cdc_enable, udd_get_frame_number(), and ui_process().

void main_suspend_action

(

void

)

Enters the application in low power mode Callback called when USB host sets USB line in suspend state.

References ui_powerdown().

volatile bool main_b_cdc_enable = false

static

Referenced by main_cdc_disable(), main_cdc_enable(), and main_sof_action().