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test-i2c-lcd.c
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test-i2c-lcd.c
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//Copyright (c) 2019 positronics.engineer at yandex dot com.
//Distributed under the terms of the MIT license.
#include <stdio.h>
#include <unistd.h>
#include <bcm2835.h>
#include "rpi-i2c-lcd.h"
int main(int argc, char** argv)
{
const char *str1 = "Hello World";
if (!bcm2835_init())
{
printf("bcm2835_init() failed. It must run by sudo!!!\n");
return 1;
}
if (!lcd_set_i2c())
{
printf("lcd_set_i2c() failed!!!\n");
return 1;
}
printf("Running LCD test...\n");
lcd_init();
//set string to first line
lcd_cursor_pos(1,1);
lcd_put_str(str1);
//set cursor position and put char
lcd_cursor_pos(2,1);
lcd_put_char('R');
lcd_cursor_pos(2,2);
lcd_put_char('P');
lcd_cursor_pos(2,3);
lcd_put_char('i');
lcd_cursor_pos(2,10);
lcd_put_str(":-)");
printf("Displaying test chars on LCD.\n" );
sleep(10);
//clear screen and finish tests
lcd_clear_screen();
lcd_put_str("Test OK, bye...");
lcd_end();
bcm2835_close();
printf("Test finished.\n");
return 0;
}