The arm button controls the flashing of the led light (embedded button experiment report)

Hello everyone, meet again, I'm your friend Quanstack Jun.

Experiment 6

Keyboard control

LED

Lamp experiment

1

The purpose of the experiment

(1)

Master the interrupt keyboard control and design method through experiments;

(2)

Proficient in writing

S3C2410

Interrupt service routine.

2

Experimental equipment

(1)

S3C2410

Embedded Development Board,

JTAG

Emulator.

(2)

Software:

PC

Computer operating system

Windows XP

,

ADS1.2

Integrated development environment, emulator driver

Motion program, HyperTerminal communication program.

3

Experiment content

Write an interrupt handler,

Handling a keyboard interrupt,

And print interruption and key display information on the serial port.

4

Experimental steps

(1)

Refer to the template project,

Create a new project

keypad

,

Add the appropriate file,

and modify

keypad

Project settings;

(2)

Create

keypad.c

And add to the project

keypad

middle;

(3)

Write a keyboard interrupt program;

The reference code is as follows:

①Serial port initialization program

void uart_init()/* UART

Serial port initialization

*/

{

GPHCON |= 0xa0;

//GPH2,GPH3 used as TXD0,RXD0

GPHUP

= 0x0;

//GPH2,GPH3

Internal pullup

ULCON0

= 0x03;

//8N1

UCON0

= 0x05;

//

The query mode is polling or interrupt

;

Clock selection is

PCLK

UFCON0 = 0x00;

//

Do not use

FIFO

UMCON0 = 0x00;

//

Do not use flow control

UBRDIV0 = 26;

//

Baud rate

57600,PCLK=12Mhz

}

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