demo.c

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/*
 * Project name:
     DEMO (Simple demonstration of the PS2 Library functions)
 * Copyright:
     (c) MikroElektronika, 2008.
 * Description:
     This code demonstrates communication with ps/2 keyboard.
     Scan codes that represent key are send to PC via UART-0.
 * Test configuration:
     MCU:             LPC2148
     Dev.Board:       EasyARM
     Oscillator:      12.0 MHz (cclk = 60.0 MHz, Fcco = 240.0 MHz)
     Ext. Modules:    - PS/2 Keyboard
     SW:              KEIL uVision3 v3.62c
 * NOTES:
     - Place Pull-up Jumper J16 at PORT0[15..8]
     - Place jumpers J6 and J7 in left position to connect PS/2 keyboard
       lines to P1.16 and P1.17
     - Be sure to turn ON the switches for RS232-0 to connect UART lines
       to RS232-0 output (Switch SW1)
     - Start UART terminal adjusted to 38400 bps, 8 bit, no parity
*/


#include <LPC214X.H>

#include "ps2.h"
#include "Serial.h"
#include "Utility.h"


unsigned char
	raw_data[16],
	raw_pos,
	raw_buff[64],
	raw_count,
	rd_count;

unsigned long
	n;


int main (void)
{
	PINSEL0 = 0;
	PINSEL1 = 0;
	PINSEL2 &= 0x0000000C;
	PINSEL2 |= 0x00000030;
	DelayProc(0.2 * CCLOCK);


	// Init UART0
	UART0_init(38400/*bps*/, 15000/*kHz*/, length_8_bit, stop_bit_1, parity_disable, parity_odd);
	UART0_sendstring ("START\n");

	// Init PS/2 Keyboard
	Ps2_Init(&IOPIN1, 17/*CLK*/, 16/*DATA*/);
	UART0_sendstring ("Ps2_Init().\n");

	// Delay 100ms, Wait for keyboard to finish
	DelayProc(0.250 * CCLOCK);
	UART0_sendstring ("DelayProc().\n");

	// Set Keyboard Delay and Typematic Rate
	Ps2_Adjust_Rate(TR_Delay_750ms, TR_Rate_10);
	UART0_sendstring ("Ps2_Adjust_Rate().\n");

	// Display Key-codes on Terminal window
	rd_count = 0;
	raw_count = 0;
	do
		{
		Ps2_Data_Read(&raw_pos, raw_data);

		if (raw_pos != 0)
			{
			for (n=0; n<raw_pos; n++)
				raw_buff[raw_count++] = raw_data[n];
			}
		else
			{
			rd_count++;
			if ((raw_count != 0) && (rd_count > 50))
				{
				for (n=0; n<raw_count; n++)
					{
					UART0_WriteNum ("0x", raw_buff[n]);
					UART0_sendchar (' ');
					}
				UART0_sendstring ("\n");
				rd_count = 0;
				raw_count = 0;
				}
			}

		DelayProc(1E-03 * CCLOCK);
		}	while (1);
}