Altera DE2-115 User's Guide download pdf (Page 103)

SFSU - Embedded Systems Tutorial Nano- Electronics & Computing Research Lab

102

// FLASH_RY,

///////////////////////////////////////////

// LCD config

assign LCD_BLON = 0; // not supported

assign LCD_ON = 1'b1; // alwasy on

This code should be copied and pasted in the main Verilog (shown previously) under REG/WIRE

declarations section.

With this step our hardware configuration is done.

After this step, open Nios II IDE Eclipse and write software to configure software of the demonstration.

Software Setup

Basic Algorithm:

1) Display is initialized.

display_global = alt_video_display_init( "/dev/sgdma_pixel", // Name of video controller

WIDTH, // Width of display

HEIGHT, // Height of display

32, // Color depth (32 or 16)

SDRAM_BASE+SDRAM_SPAN/2, // Where we want our frame buffers

DESCRIPTOR_MEM_BASE, // Where we want our descriptors

NUM_FRAME );

if( display_global )

2) Touch Panel is initialized.

hTouch = Touch_Init(TOUCH_PANEL_SPI_BASE, TOUCH_PANEL_PEN_IRQ_N_BASE,

TOUCH_PANEL_PEN_IRQ_N_IRQ);

3) Welcome screen is displayed . The following commands are used to display characters on

the screen.

sprintf(szText,"\nCalculator ");

vid_print_string_alpha(400, 2, COLOR_WHITE, COLOR_BLACK, tahomabold_20, display_global, szText);

sprintf(szText,"\nTouch Anywhere to Begin");

vid_print_string_alpha(220, 200, COLOR_WHITE, COLOR_BLACK, tahomabold_20, display_global, szText);

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Altera DE2-115 User's Guide Page 103