====== NMK32203 - Microcontroller ======

//**Note20230217** This page is being updated - work in progress...//

This course is //Microcontroller//, offered by the Faculty of Electronics Engineering & Technology.

===== Announcements =====

[20230217] Welcome to the new NMK322 info page!

===== Lecture Slides =====

  * Lecture Part 0 - Course Introduction
  * Lecture Part 1 - {{:archive:nmk322:lecture2-intro2uc.pdf|Introduction to Microcontrollers}}

===== Codes (discussed in class) =====

//**Note**: I had to rename functions with the word p-r-i-n-t to 'puts'... somehow, UniMAP server does not like that word being sent to the server :-O //

//work in progress...//

==== Library: Serial (UART) ====

<file c uart.h>
#ifndef __MY1UART_H__
#define __MY1UART_H__

void uart_init(void) {
	SCON = 0x50;
	TMOD &= 0x0F;
	TMOD |= 0x20;
	TH1 = 253;
	TR1 = 1;
}

void uart_tx(unsigned char sdat) {
	SBUF = sdat;
	while (TI==0);
	TI = 0;
}

unsigned char uart_rx(void) {
	unsigned char rdat;
	while (RI==0);
	rdat = SBUF;
	RI = 0;
	return rdat;
}

void uart_puts(char* text) {
	while (*text) {
		uart_tx(*text);
		text++;
	}
}

#endif /* __MY1UART_H__ */
</file>

==== Library: Text LCD ====

<file c tlcd.h>
#ifndef __MY1TLCD_H__
#define __MY1TLCD_H__

#define LCD_DATA P2
sbit LCD_RS = P0^7;
sbit LCD_RW = P0^6;
sbit LCD_EN = P0^5;

void tlcd_delay(unsigned char step) {
	unsigned int loop;
	do {
		loop = 1000; while (--loop);
	} while (--step);
}

void tlcd_write(unsigned char cdat) {
	LCD_RS = 1;
	LCD_RW = 0;
	LCD_DATA = cdat;
	LCD_EN = 1;
	LCD_EN = 0;
	tlcd_delay(1);
}

void tlcd_cmd(unsigned char ccmd) {
	LCD_RS = 0;
	LCD_RW = 0;
	LCD_DATA = ccmd;
	LCD_EN = 1;
	LCD_EN = 0;
	tlcd_delay(2);
}

void tlcd_init(void) {
	tlcd_cmd(0x38); /* 8 bit mode, 1/16 duty, 5x8 font */
	tlcd_cmd(0x38);
	tlcd_cmd(0x38);
	tlcd_cmd(0x06); /* display off */
	tlcd_cmd(0x0c); /* display on, blink cursor on */
	tlcd_cmd(0x01); /* clear display */
}

void tlcd_puts(char* text) {
	while (*text) {
		tlcd_write(*text);
		text++;
	}
}
#endif /* __MY1TLCD_H__ */
</file>

==== Library: Timer ====

<file c timer.h>
#ifndef __MY1TIMER_H__
#define __MY1TIMER_H__

// useful macro!
#define timer0_init() { TMOD &= 0xF0; TMOD |= 0x01; }
#define timer0_prep(hi,lo) { TH0 = hi; TL0 = lo; }
#define timer0_stop() { TR0 = 0; TF0 = 0; }
#define timer0_exec() { TR0 = 1; }
#define timer0_flag() { timer0_exec(); while (!TF0); }
#define timer0_wait(hi,lo) { timer0_prep(hi,lo); timer0_flag(); timer0_stop(); }
#define timer0_null() { TH0 = 0; TL0 = 0; }
#define timer0_read() ((unsigned int)TH0<<8)|TL0

void timer0_delayms(unsigned int step) {
	do {
		timer0_wait(0xfc,0x66); // 1 ms delay
	} while (--step);
}

#endif /* __MY1TIMER_H__ */
</file>

===== Codes (for Lab Project) =====

You can get my personal 8051 code library from [[https://codeberg.org/azman/my1code51|here]] ([[https://codeberg.org/azman/my1code51/src/commit/8fcedf8442bd0f1c36202ba69f9a4ea8fb172b8b/LICENSE|LICENSE]]), which can be used for NMK322 lab project. **The codes provided in this repository is NOT ALLOWED to be used in any written (or lab) assessment**.