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Added example program

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Michal Procházka
2025-09-18 14:03:44 +02:00
parent 3410a9a95b
commit f6b63b2da9
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9
README.md
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@@ -26,3 +26,12 @@ If the flash fails, try to add `--slow` before the `--port` argument (should not
The tool also allows reading and erasing the chip, figure that out on your own if you need that (although `tulflash --help` might guide you if you ask it nicely).
## Example program
You'll need to clone this repo (or just [download the file](example.c)) and install SDCC:
```
sdcc example.c
tulflash --port ... write example.ihx
```

364
example.c Normal file
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@@ -0,0 +1,364 @@
//**********************************************************************
//**********************************************************************
//*** ***
//*** K O P Y T O V1.1 ***
//*** ***
//*** vandalizoval Michal Procházka ***
//*** ***
//**********************************************************************
//**********************************************************************
#include <8051.h>
#include <stdio.h>
#include <stdint.h>
#define TickPerSec 100
#define NPER (0x10000-(20000000L/12/TickPerSec))
// Definice vstupu a vystupu
#define _P0 0x80
#define _P1 0x90
#define _P2 0xa0
#define _P3 0xb0
#define _P4 0xc0
#define Tlac1 P3_2
#define Tlac2 P3_3
#define Buzzer P3_6
#define LED1 P4_2
#define LED2 P4_3
#define LED3 P4_4
#define POT P1_0
#define SMT P1_1
#define ZAR P1_2
#define LB_Data P1_3
#define LB_SCK P1_4
#define LB_SCL P1_5
#define LB_RCK P1_6
#define LB_OE P1_7
// TIMER se odecita v casovem preruseni
volatile uint16_t TIMER;
uint8_t LCD_Pos;
/*************************************************************************\
* LCD - Liquid Crystal Display *
*-------------------------------------------------------------------------*
* Description : Header file for programming of LCD display based on *
* HITACHI controller HD44780. *
*-------------------------------------------------------------------------*
* Author : Ceba & www.HW.cz Email : ceba@hw.cz *
* Developed : 06.02.2002 Last Update : 12.04.2003 *
* Version : 0.1.0 *
*-------------------------------------------------------------------------*
* Compiler : ANY Version: ANY *
* Source file : LCD.H *
*-------------------------------------------------------------------------*
* Target system : Charon II. - ATmega128, Quartz 14.7456 MHz *
* LCD SC1602A - 4.bit mode *
*-------------------------------------------------------------------------*
* Instruction D7 D6 D5 D4 D3 D2 D1 D0 *
* ============================================== *
* Display clear 0 0 0 0 0 0 0 1 *
* Cursor home 0 0 0 0 0 0 1 * *
* Entry Mode Set 0 0 0 0 0 1 I/D S *
* Display On/Off 0 0 0 0 1 D C B *
* Curs/Disp shift 0 0 0 1 S/C R/L * * *
* Function Set 0 0 1 DL N F * * *
* CG RAM addr set 0 1 ---------Acg--------- *
* DD RAM addr set 1 -------------Add--------- *
* *
* Meaning: *
* * - nonvalid bit *
* Acg - CG RAM address (CHARACTER GENERATOR) *
* Add - DD RAM address (DATA DISPLAY) *
* AC - adress counter *
* *
* I/D - 1-increment, 0-decrement *
* S - 1-display shift, 0-no display shift *
* D - 1-display ON, 0-display OFF *
* C - 1-cursor ON, 0-cursor OFF *
* B - 1-blink ON, 0-blink OFF *
* S/C - 1-display shift, 0-cursor movement *
* R/L - 1-right shift, 0-left shift *
* DL - 1-8 bits data transfer, 0-4 bits data transfer *
* N - 1-1/16 duty, 0-1/8 or 1/11 duty *
* F - 1-5x10 dot matrix, 0-5x7 dot matrix *
* BF - 1-internal operation in progress, 0-display ready *
* *
\*************************************************************************/
#define LCD_RS_PIN P2_4
#define LCD_RW_PIN P2_5
#define LCD_EN_PIN P2_6
#define LCD_RS 0x10 /* rgister select */
#define LCD_RW 0x20 /* read/write */
#define LCD_EN 0x40 /* chip enable */
/* --- LCD commands --- */
#define cmd_lcd_init 0x38
#define cmd_lcd_clear 0x01
#define cmd_lcd_home 0x02
#define cmd_cur_shift_on 0x06
#define cmd_cur_shift_off 0x07
#define cmd_lcd_on 0x0E
#define cmd_lcd_off 0x0A
#define cmd_cur_on 0x0E
#define cmd_cur_off 0x0C
#define cmd_cur_blink_on 0x0F
#define cmd_cur_blink_off 0x0E
#define cmd_cur_left 0x10
#define cmd_cur_right 0x14
#define cmd_scr_left 0x18
#define cmd_scr_right 0x1C
#define cmd_set_cgram_addr 0x40
#define cmd_set_ddram_addr 0x80
void Delay(int pause) {
TIMER = 1 + pause;
while(TIMER);
}
void LCD_Pause(void) {
// Hnus, ale funguje to
int i = 30;
while(i--);
}
uint8_t LCD_State(void) {
uint8_t temp;
LCD_Pause();
P2 = LCD_RW | 0x0F;
LCD_Pause();
LCD_EN_PIN = 1;
LCD_Pause();
temp = (P2 & 0x0F) << 4;
LCD_EN_PIN = 0;
LCD_Pause();
LCD_EN_PIN = 1;
LCD_Pause();
temp = temp + (P2 & 0x0F);
LCD_EN_PIN = 0;
return temp;
}
void LCD_SendCmd( uint8_t val )
{
LCD_Pause();
P2 = (val >> 4) & 0x0F;
LCD_Pause();
LCD_EN_PIN = 1;
LCD_Pause();
LCD_EN_PIN = 0;
LCD_Pause();
P2 = (val & 0x0F);
LCD_Pause();
LCD_EN_PIN = 1;
LCD_Pause();
LCD_EN_PIN = 0;
while(LCD_State() & 0x80);
}
void LCD_SendData(uint8_t val) {
LCD_Pause();
P2 = LCD_RS | ((val >> 4) & 0x0F);
LCD_Pause();
LCD_EN_PIN = 1;
LCD_Pause();
LCD_EN_PIN = 0;
LCD_Pause();
P2 = LCD_RS | (val & 0x0F);
LCD_Pause();
LCD_EN_PIN = 1;
LCD_Pause();
LCD_EN_PIN = 0;
while(LCD_State() & 0x80);
}
void LCD_Clear(void) {
LCD_SendCmd(0x01); /* display clear */
LCD_Pos=0;
}
void LCD_Init(void) {
P2 = 0; /* set RS, RW and EN low */
/* all delays are vital */
Delay(50); /* power on delay - wait more than 15 ms */
for(uint8_t i = 0; i < 3; i++) {
P2 = 0x03; /* lce enable low */
Delay(1); /* wait more than 100us */
P2 = LCD_EN | 0x03; /* lcd enable high */
Delay(1); /* wait more than 100us */
P2 = 0x03; /* lce enable low */
Delay(5); /* wait more than 4.1 ms */
}
P2 = 0x02; /* lcd enable low */
Delay(1); /* wait more than 100us */
P2 = LCD_EN | 0x02; /* lcd enable high */
Delay(1); /* wait more than 100us */
P2 = 0x02; /* lcd enable low */
Delay(5); /* wait more than 100us */
LCD_SendCmd(0x28); /* 4 bit mode, 1/16 duty, 5x8 font */
LCD_SendCmd(0x08); /* display off */
LCD_Clear();
LCD_SendCmd(0x06); /* entry mode */
LCD_SendCmd(0x0C); /* display on, blinking cursor off */
}
int putchar(int c) {
if(c == 10) {
while((LCD_Pos != 0) && (LCD_Pos != 40)) {
LCD_SendData(32);
LCD_Pos++;
if(LCD_Pos == 80) LCD_Pos=0;
}
} else {
LCD_SendData(c);
LCD_Pos++;
if(LCD_Pos == 80) LCD_Pos=0;
}
return 0;
}
/*****************************************
** Nastaveni preruseni **
*****************************************/
/* Seriove preruseni a timer1 jsou nastaveny
na 115200bps, timer0 se nastavuje pomoci TH0.*/
void init_interrupts(void) {
TMOD=0x21;
TCON=0x50;
PCON=0x80;
TL0=(uint8_t)NPER;
TH0=(uint8_t)(NPER >> 8);
IE=0x82;
}
/*****************************************
** Obsluha LED baru **
*****************************************/
/*
__sbit __at _P1+3 LB_Data;
__sbit __at _P1+4 LB_SCK;
__sbit __at _P1+5 LB_SCL; RESET
__sbit __at _P1+6 LB_RCK; PREPIS
__sbit __at _P1+7 LB_OE;
*/
void SetLedBar(uint16_t n) {
uint8_t i;
LB_RCK = 0;
LB_SCL = 0;
LB_SCL = 1;
LB_SCK = 0;
for(i = 0; i < 10; i++) {
LB_Data = !(n & 1);
n >>= 1; // n = n >> 1
LB_SCK = 1;
LB_SCK = 0;
}
LB_RCK = 1;
LB_OE = 0;
}
/*****************************************
** Obsluha Klavesnice **
*****************************************/
#define KEY_C_1 P0_0
#define KEY_C_2 P0_1
#define KEY_C_3 P0_2
#define KEY_C_4 P0_3
#define KEY_R_1 P0_4
#define KEY_R_2 P0_5
#define KEY_R_3 P0_6
#define KEY_R_4 P0_7
char GetKeyboard(void) {
P0 = 0xFF;
KEY_R_1 = 0;
LCD_Pause();
if (!KEY_C_1) return '1';
if (!KEY_C_2) return '2';
if (!KEY_C_3) return '3';
if (!KEY_C_4) return 'A';
P0 = 0xFF;
KEY_R_2 = 0;
LCD_Pause();
if (!KEY_C_1) return '4';
if (!KEY_C_2) return '5';
if (!KEY_C_3) return '6';
if (!KEY_C_4) return 'B';
P0 = 0xFF;
KEY_R_3 = 0;
LCD_Pause();
if (!KEY_C_1) return '7';
if (!KEY_C_2) return '8';
if (!KEY_C_3) return '9';
if (!KEY_C_4) return 'C';
P0 = 0xFF;
KEY_R_4 = 0;
LCD_Pause();
if (!KEY_C_1) return '*';
if (!KEY_C_2) return '0';
if (!KEY_C_3) return '#';
if (!KEY_C_4) return 'D';
return -1;
}
/*****************************************
** Hlavni program **
*****************************************/
void main(void) {
init_interrupts();
LCD_Init();
int i = 0;
while(1) {
LCD_Clear();
printf("hellOwOrld! %d", ++i);
Delay(TickPerSec);
}
}
/*****************************************
** Obsluha casovace 0 **
*****************************************/
void timer0(void) __interrupt(1) {
// Reload, 10ms
TL0=(uint8_t)NPER;
TH0=(uint8_t)(NPER >> 8);
if(TIMER!=0) TIMER--;
}