68 lines
1.1 KiB
Markdown
68 lines
1.1 KiB
Markdown
---
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title: "Бегущая строка"
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categories: ["mcu", "archive"]
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date: 2016-02-19T00:00:00+03:00
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draft: false
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featured_image: miniature.jpg
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---
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<!--more-->
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```c
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#include <avr/io.h>
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#include <string.h>
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#include <util/delay.h>
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#include "lcd_lib.h"
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#define LINE 16
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char *str = "Postapokaliptichesky1232323123";
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char *pstr;
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char buf[LINE + 1];
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void lcd_clear() {
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LCDsendCommand(0x01);
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}
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void lcd_zero_coord() {
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char y = 0;
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char x = 0;
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LCDsendCommand(0x80 | ((0x40 * y) + x));
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}
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void lcd_data(char byte) {
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LCDsendChar(byte);
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}
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void lcd_str(char *s) {
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while (*s != '\0') lcd_data(*(s++));
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}
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int main(void) {
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LCDinit();
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lcd_clear();
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while (1) {
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int len = strlen(str) + LINE;
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for (int i = 0; i < len; ++i) {
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lcd_clear();
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lcd_zero_coord();
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strcpy(buf, str);
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int spaces = LINE - i;
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buf[i] = '\0';
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pstr = buf;
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if (spaces > 0) for (int s = 0; s < spaces; ++s) lcd_data(' ');
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else pstr += i - LINE;
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lcd_str(pstr);
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_delay_ms(100);
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}
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}
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}
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```
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