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113 lines
2.0 KiB
C
113 lines
2.0 KiB
C
4 years ago
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/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
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* ----------------------------------------------------------------------------
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*
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* Stdio demo
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*
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* $Id$
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*/
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#include "defines.h"
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#include <ctype.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <util/delay.h>
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#include "lcd.h"
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#include "uart.h"
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/*
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* Do all the startup-time peripheral initializations.
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*/
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static void
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ioinit(void)
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{
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uart_init();
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lcd_init();
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}
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FILE uart_str = FDEV_SETUP_STREAM(uart_putchar, uart_getchar, _FDEV_SETUP_RW);
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FILE lcd_str = FDEV_SETUP_STREAM(lcd_putchar, NULL, _FDEV_SETUP_WRITE);
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static void
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delay_1s(void)
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{
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uint8_t i;
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for (i = 0; i < 100; i++)
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_delay_ms(10);
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}
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int
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main(void)
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{
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uint8_t i;
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char buf[20], s[20];
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ioinit();
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stdout = stdin = &uart_str;
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stderr = &lcd_str;
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fprintf(stderr, "Hello world!\n");
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for (;;)
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{
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printf_P(PSTR("Enter command: "));
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if (fgets(buf, sizeof buf - 1, stdin) == NULL)
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break;
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if (tolower(buf[0]) == 'q')
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break;
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switch (tolower(buf[0]))
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{
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default:
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printf("Unknown command: %s\n", buf);
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break;
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case 'l':
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if (sscanf(buf, "%*s %s", s) > 0)
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{
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fprintf(&lcd_str, "Got %s\n", s);
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printf("OK\n");
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}
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else
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{
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printf("sscanf() failed\n");
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}
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break;
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case 'u':
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if (sscanf(buf, "%*s %s", s) > 0)
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{
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fprintf(&uart_str, "Got %s\n", s);
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printf("OK\n");
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}
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else
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{
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printf("sscanf() failed\n");
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}
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break;
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}
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}
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fprintf(stderr, "Bye-bye");
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delay_1s();
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for (i = 0; i < 3; i++)
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{
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putc('.', stderr);
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delay_1s();
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}
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fprintf(stderr, "\n ");
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return 0;
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}
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