ui.c File Reference

User Interface.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

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

Macros
#define	SEQUENCE_PERIOD   150
	Sequence process running each SEQUENCE_PERIOD ms. More...
#define	UI_WAKEUP_BPM_SRC   BPM_BKUPWEN_EIC
#define	UI_WAKEUP_EIC_LINE   SW0_EIC_LINE
#define	UI_WAKEUP_HANDLER   button_handler
#define	UI_WAKEUP_IRQ_LEVEL   5
#define	UI_WAKEUP_IRQN   EIC_1_IRQn

Functions
void	ui_init (void)
	Initializes the user interface. More...
void	ui_kbd_led (uint8_t value)
	Turn on or off the keyboard LEDs. More...
void	ui_powerdown (void)
	Enters the user interface in power down mode. More...
void	ui_process (uint16_t framenumber)
	This process is called each 1ms It is called only if the USB interface is enabled. More...
void	ui_start_read (void)
void	ui_start_write (void)
void	ui_stop_read (void)
void	ui_stop_write (void)
void	ui_wakeup (void)
	Exits the user interface of power down mode. More...
void	ui_wakeup_disable (void)
	Disables the asynchronous interrupts of the user interface. More...
void	ui_wakeup_enable (void)
	Enables the asynchronous interrupts of the user interface. More...
Internal routines to manage asynchronous interrupt pin change
This interrupt is connected to a switch and allows to wakeup CPU in low sleep mode. This wakeup the USB devices connected via a downstream resume.
static void	ui_enable_asynchronous_interrupt (void)
	Initializes and enables interrupt pin change. More...
static void	ui_disable_asynchronous_interrupt (void)
	Disables interrupt pin change. More...
static void	UI_WAKEUP_HANDLER (void)

Variables
static bool	btn_wakeup = false
	Wakeup, ignore button change until button is back to default state. More...
struct {
bool   b_down
bool   b_modifier
uint8_t   u8_value
}	ui_sequence []

#define SEQUENCE_PERIOD   150

Sequence process running each SEQUENCE_PERIOD ms.

Referenced by ui_process().

#define UI_WAKEUP_BPM_SRC   BPM_BKUPWEN_EIC

#define UI_WAKEUP_EIC_LINE   SW0_EIC_LINE

Referenced by ui_disable_asynchronous_interrupt(), ui_enable_asynchronous_interrupt(), and UI_WAKEUP_HANDLER().

#define UI_WAKEUP_HANDLER   button_handler

Referenced by ui_enable_asynchronous_interrupt().

#define UI_WAKEUP_IRQ_LEVEL   5

Referenced by ui_enable_asynchronous_interrupt().

#define UI_WAKEUP_IRQN   EIC_1_IRQn

Referenced by ui_enable_asynchronous_interrupt().

static void ui_disable_asynchronous_interrupt ( void  )

static

Disables interrupt pin change.

References eic_line_disable_interrupt(), sysclk_disable_peripheral_clock(), and UI_WAKEUP_EIC_LINE.

Referenced by ui_wakeup_disable(), and UI_WAKEUP_HANDLER().

static void ui_enable_asynchronous_interrupt ( void  )

static

Initializes and enables interrupt pin change.

References EIC_ASYNCH_MODE, EIC_EDGE_FALLING_EDGE, eic_enable(), EIC_FILTER_DISABLED, EIC_LEVEL_LOW_LEVEL, eic_line_enable(), eic_line_enable_interrupt(), eic_line_set_callback(), eic_line_set_config(), eic_line_config::eic_mode, EIC_MODE_EDGE_TRIGGERED, sysclk_enable_peripheral_clock(), UI_WAKEUP_EIC_LINE, UI_WAKEUP_HANDLER, UI_WAKEUP_IRQ_LEVEL, and UI_WAKEUP_IRQN.

Referenced by ui_wakeup_enable().

void ui_init

(

void

)

Initializes the user interface.

References LED0, and LED_On.

Referenced by main().

void ui_kbd_led

(

uint8_t

value

)

Turn on or off the keyboard LEDs.

References UNUSED.

void ui_powerdown

(

void

)

Enters the user interface in power down mode.

References LED0, and LED_Off.

Referenced by main(), and main_suspend_action().

void ui_process

(

uint16_t

framenumber

)

This process is called each 1ms It is called only if the USB interface is enabled.

Parameters

framenumber

Current frame number

References b_down, b_modifier, btn_wakeup, GPIO_PUSH_BUTTON_0, ioport_get_pin_level(), LED0, LED_Off, LED_On, SEQUENCE_PERIOD, u8_value, udi_hid_kbd_down(), udi_hid_kbd_modifier_down(), udi_hid_kbd_modifier_up(), udi_hid_kbd_up(), and ui_sequence.

Referenced by main_sof_action().

void ui_start_read

(

void

)

void ui_start_write

(

void

)

void ui_stop_read

(

void

)

void ui_stop_write

(

void

)

void ui_wakeup

(

void

)

Exits the user interface of power down mode.

References LED0, and LED_On.

Referenced by main_resume_action().

void ui_wakeup_disable

(

void

)

Disables the asynchronous interrupts of the user interface.

References ui_disable_asynchronous_interrupt().

Referenced by main_remotewakeup_disable().

void ui_wakeup_enable

(

void

)

Enables the asynchronous interrupts of the user interface.

References ui_enable_asynchronous_interrupt().

Referenced by main_remotewakeup_enable().

static void UI_WAKEUP_HANDLER ( void  )

static

References btn_wakeup, eic_line_clear_interrupt(), eic_line_interrupt_is_pending(), sysclk_disable_peripheral_clock(), sysclk_enable_peripheral_clock(), udc_remotewakeup(), ui_disable_asynchronous_interrupt(), and UI_WAKEUP_EIC_LINE.

bool b_down

Referenced by ui_process().

bool b_modifier

Referenced by ui_process().

bool btn_wakeup = false

static

Wakeup, ignore button change until button is back to default state.

Referenced by ui_process(), and UI_WAKEUP_HANDLER().

uint8_t u8_value

Referenced by ui_process().

struct { ... } ui_sequence[]

Referenced by ui_process().