oled1_tickless_xpro_example/demotasks.c File Reference

FreeRTOS demo task implementations.

Copyright (c) 2013-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <conf_demo.h>
#include "demotasks.h"

Macros
Task configuration
#define	UART_TASK_PRIORITY   (tskIDLE_PRIORITY + 3)
#define	UART_TASK_DELAY   (10 / portTICK_RATE_MS)
#define	MAIN_TASK_PRIORITY   (tskIDLE_PRIORITY + 2)
#define	MAIN_TASK_DELAY   (100 / portTICK_RATE_MS)
#define	GRAPH_TASK_PRIORITY   (tskIDLE_PRIORITY + 1)
#define	GRAPH_TASK_DELAY   (50 / portTICK_RATE_MS)
#define	TERMINAL_TASK_PRIORITY   (tskIDLE_PRIORITY + 1)
#define	TERMINAL_TASK_DELAY   (1000 / portTICK_RATE_MS)
#define	ABOUT_TASK_PRIORITY   (tskIDLE_PRIORITY + 1)
#define	ABOUT_TASK_DELAY   (33 / portTICK_RATE_MS)

Functions
static void	cdc_rx_handler (uint8_t instance)
	Interrupt handler for reception from EDBG Virtual COM Port. More...
void	demotasks_init (void)
	Initialize tasks and resources for demo. More...
Tasks for demo
static void	main_task (void *params)
	Main demo task. More...
static void	graph_task (void *params)
	Graph task. More...
static void	terminal_task (void *params)
	Terminal task. More...
static void	about_task (void *params)
	About task. More...
static void	uart_task (void *params)
	UART task. More...

Menu and display configuration
#define	MENU_HEIGHT   8
	Height of menu bar. More...
#define	MENU_ITEM_WIDTH   (((GFX_MONO_LCD_WIDTH - (MENU_NUM_ITEMS - 1))) / MENU_NUM_ITEMS)
	Width per menu item. More...
#define	CANVAS_HEIGHT   ((GFX_MONO_LCD_HEIGHT / 2) - (MENU_HEIGHT + 1))
	Height of area in which to draw content. More...
#define	CANVAS_WIDTH   (GFX_MONO_LCD_WIDTH)
	Width of area in which to draw content. More...
#define	CANVAS_GRAPH_Y_OFFSET   (GFX_MONO_LCD_HEIGHT / 2)
	Offset of Y-coordinate for display buffer of graph. More...
#define	TERMINAL_LINES   (1 + ((CANVAS_HEIGHT - SYSFONT_HEIGHT) / (SYSFONT_HEIGHT + 1)))
	Character lines on display. More...
#define	TERMINAL_COLUMNS   (CANVAS_WIDTH / SYSFONT_WIDTH)
	Character columns on display. More...
#define	TERMINAL_BUFFER_LINES   (1 + TERMINAL_LINES)
	Character lines in terminal buffer. More...
#define	TERMINAL_BUFFER_COLUMNS   (1 + TERMINAL_COLUMNS)
	Character columns in terminal buffer. More...
enum	menu_items {   MENU_ITEM_GRAPH,   MENU_ITEM_TERMINAL,   MENU_ITEM_ABOUT,   MENU_NUM_ITEMS,   MENU_ITEM_GRAPH,   MENU_ITEM_TERMINAL,   MENU_ITEM_ABOUT,   MENU_NUM_ITEMS,   MENU_ITEM_GRAPH,   MENU_ITEM_TERMINAL,   MENU_ITEM_ABOUT,   MENU_NUM_ITEMS,   MENU_ITEM_GRAPH,   MENU_ITEM_TERMINAL,   MENU_ITEM_ABOUT,   MENU_NUM_ITEMS }
	Available selections in menu. More...

Global constants and variables
static const char	menu_items_text [MENU_NUM_ITEMS][6]
	Labels for menu items. More...
static const char	about_text []
	Text to display on about screen when tickless operation is disabled. More...
static const char	about_text_tickless []
	Text to display on about screen when tickless operation is enabled. More...
static struct usart_module	cdc_usart
	Instance for Embedded Debugger (EDBG) Virtual COM Port driver. More...
static uint8_t	graph_noise = 128
	Pseudo-random noise for graph task. More...
static uint8_t	terminal_buffer [TERMINAL_BUFFER_LINES][TERMINAL_BUFFER_COLUMNS]
	Buffer for terminal text. More...
static uint8_t	terminal_line_offset
	Index of latest terminal line (first to be printed) More...
static xQueueHandle	terminal_in_queue
	Queue for incoming terminal characters. More...
static xSemaphoreHandle	display_mutex
	Semaphore to signal busy display. More...
static xSemaphoreHandle	terminal_mutex
	Semaphore to signal busy terminal buffer. More...
static xTaskHandle	terminal_task_handle
	Handle for terminal output task. More...
static xTaskHandle	about_task_handle
	Handle for about screen task. More...
static	OLED1_CREATE_INSTANCE (oled1, OLED1_EXT_HEADER)
	Instance for OLED1 Xplained Pro LED and button driver. More...