ui.c File Reference

User Interface.

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

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

Macros
#define	backlight_off()   ioport_set_pin_level(LCD_BL_GPIO,LCD_BL_INACTIVE_LEVEL)
#define	backlight_on()   ioport_set_pin_level(LCD_BL_GPIO,LCD_BL_ACTIVE_LEVEL)
#define	backlight_toggle()   ioport_toggle_pin_level(LCD_BL_GPIO)
#define	UI_WAKEUP_BPM_SRC   BPM_BKUPWEN_EIC
#define	UI_WAKEUP_EIC_LINE   GPIO_PUSH_BUTTON_EIC_LINE
#define	UI_WAKEUP_HANDLER   button_handler
#define	UI_WAKEUP_IRQ_LEVEL   5
#define	UI_WAKEUP_IRQN   EIC_5_IRQn

Functions
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)
	Interrupt handler for interrupt pin change. More...
Main user interface functions
void	ui_init (void)
	Initializes the user interface. More...
void	ui_usb_mode_change (bool b_host_mode)
	Notify that the USB mode are switched automatically. This is possible only when ID pin is available. More...
Callback to show the MSC read and write access
void	ui_start_read (void)
void	ui_stop_read (void)
void	ui_start_write (void)
void	ui_stop_write (void)

Host mode user interface functions
static uhc_enum_status_t	ui_enum_status = UHC_ENUM_DISCONNECT
static uint16_t	ui_device_speed_blink
static bool	ui_test_done
static bool	ui_test_result
void	ui_usb_vbus_change (bool b_vbus_present)
	Notify that a Vbus are changed Available only in USB hardware with Vbus monitoring. More...
void	ui_usb_vbus_error (void)
	Notify that a Vbus error has occurred Available only in USB hardware with Vbus monitoring. More...
void	ui_usb_connection_event (uhc_device_t *dev, bool b_present)
	Notify that a USB device has been connected or disconnected. More...
void	ui_usb_enum_event (uhc_device_t *dev, uhc_enum_status_t status)
	Notify the end of a USB device enumeration. More...
void	ui_usb_wakeup_event (void)
	Notify that a USB device or the host has wake up the USB line. More...
void	ui_usb_sof_event (void)
	Notify that a SOF has been sent (each 1 ms) More...
void	ui_test_flag_reset (void)
	Resets the status flag of the test. More...
void	ui_test_finish (bool b_success)
	Displays the result of the test. More...

#define backlight_off

(

)

ioport_set_pin_level(LCD_BL_GPIO,LCD_BL_INACTIVE_LEVEL)

Referenced by ui_init(), ui_test_flag_reset(), ui_usb_connection_event(), and ui_usb_sof_event().

#define backlight_on

(

)

ioport_set_pin_level(LCD_BL_GPIO,LCD_BL_ACTIVE_LEVEL)

Referenced by ui_test_finish().

#define backlight_toggle

(

)

ioport_toggle_pin_level(LCD_BL_GPIO)

Referenced by ui_usb_sof_event().

#define UI_WAKEUP_BPM_SRC   BPM_BKUPWEN_EIC

#define UI_WAKEUP_EIC_LINE   GPIO_PUSH_BUTTON_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_5_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_usb_wakeup_event(), 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_usb_sof_event().

void ui_init

(

void

)

Initializes the user interface.

References backlight_off, LED0, and LED_Off.

Referenced by main().

void ui_start_read

(

void

)

References LED0, and LED_On.

void ui_start_write

(

void

)

References LED0, and LED_On.

void ui_stop_read

(

void

)

References LED0, and LED_Off.

void ui_stop_write

(

void

)

References LED0, and LED_Off.

void ui_test_finish

(

bool

b_success

)

Displays the result of the test.

Parameters

b_success

true, if the test is successfull

References backlight_on, ui_test_done, and ui_test_result.

Referenced by main().

void ui_test_flag_reset

(

void

)

Resets the status flag of the test.

References backlight_off, and ui_test_done.

Referenced by main().

void ui_usb_connection_event	(	uhc_device_t *	dev,
		bool	b_present
	)

Notify that a USB device has been connected or disconnected.

Parameters

dev	Pointer on USB device information
b_present	true, if the device has been connected

References backlight_off, LED0, LED_On, UHC_ENUM_DISCONNECT, ui_enum_status, and UNUSED.

Referenced by main_usb_connection_event().

void ui_usb_enum_event	(	uhc_device_t *	dev,
		uhc_enum_status_t	status
	)

Notify the end of a USB device enumeration.

Parameters

dev	Pointer on USB device information
status	Status of the USB enumeration

References uhc_device_t::speed, UHD_SPEED_FULL, UHD_SPEED_HIGH, UHD_SPEED_LOW, ui_device_speed_blink, ui_enum_status, and ui_test_done.

void ui_usb_mode_change

(

bool

b_host_mode

)

Notify that the USB mode are switched automatically. This is possible only when ID pin is available.

Parameters

b_host_mode

true, if the host mode has been selected

References LED0, LED_Off, and LED_On.

void ui_usb_sof_event

(

void

)

Notify that a SOF has been sent (each 1 ms)

References backlight_off, backlight_toggle, GPIO_PUSH_BUTTON_0, ioport_get_pin_level(), LED0, LED_Off, LED_Toggle, UHC_ENUM_SUCCESS, uhc_suspend(), ui_device_speed_blink, ui_enable_asynchronous_interrupt(), ui_enum_status, ui_test_done, and ui_test_result.

Referenced by main_usb_sof_event().

void ui_usb_vbus_change

(

bool

b_vbus_present

)

Notify that a Vbus are changed Available only in USB hardware with Vbus monitoring.

Parameters

b_vbus_present

true, if Vbus is high.

References UNUSED.

void ui_usb_vbus_error

(

void

)

Notify that a Vbus error has occurred Available only in USB hardware with Vbus monitoring.

void ui_usb_wakeup_event

(

void

)

Notify that a USB device or the host has wake up the USB line.

References ui_disable_asynchronous_interrupt().

static void UI_WAKEUP_HANDLER ( void  )

static

Interrupt handler for interrupt pin change.

References eic_line_clear_interrupt(), eic_line_interrupt_is_pending(), sysclk_disable_peripheral_clock(), sysclk_enable_peripheral_clock(), uhc_is_suspend(), uhc_resume(), ui_disable_asynchronous_interrupt(), and UI_WAKEUP_EIC_LINE.

uint16_t ui_device_speed_blink

static

Blink frequency depending on device speed

Referenced by ui_usb_enum_event(), and ui_usb_sof_event().

uhc_enum_status_t ui_enum_status = UHC_ENUM_DISCONNECT

static

Status of device enumeration

Referenced by ui_usb_connection_event(), ui_usb_enum_event(), and ui_usb_sof_event().

bool ui_test_done

static

Status of the MSC test

Referenced by ui_test_finish(), ui_test_flag_reset(), ui_usb_enum_event(), and ui_usb_sof_event().

bool ui_test_result

static

Result of the MSC test

Referenced by ui_test_finish(), and ui_usb_sof_event().