Also ich habe es mit den Dateien nochmal probiert und diesmal kam das:
compiling main.c ...
main.c: In function 'send_help':
main.c:112: ➜ warning: implicit declaration of function 'usart_txfull'
main.c:114: ➜ warning: implicit declaration of function 'usart_putchar'
main.c: In function 'main':
main.c:124: ➜ warning: implicit declaration of function 'usart_setbaudrate'
main.c:127: ➜ warning: implicit declaration of function 'usart_enable'
main.c:149: ➜ warning: implicit declaration of function 'usart_rxempty'
main.c:150: ➜ warning: implicit declaration of function 'usart_getchar'
compiled 186 lines
compiling niboprot.c ...
compiled 315 lines
compiling uart.c ...
compiled 135 lines
creating nibobee_terminal_1.zip ...
linking program ...
/opt/avr/nibobeelib-1.4/lib/m1284-20/libnibobee_usart.a(usart.o): In function `__vector_20':
usart.c:(.text.__vector_20+0x0): multiple definition of `__vector_20'
uart.o:uart.c:(.text.__vector_20+0x0): first defined here
/opt/avr/nibobeelib-1.4/lib/m1284-20/libnibobee_usart.a(usart.o): In function `__vector_21':
usart.c:(.text.__vector_21+0x0): multiple definition of `__vector_21'
uart.o:uart.c:(.text.__vector_21+0x0): first defined here
main.o: In function `main':
main.c:(.text.main+0xa4): undefined reference to `usart_rxempty'
main.c:(.text.main+0x122): undefined reference to `usart_txfull'
main.c:(.text.main+0x182): undefined reference to `usart_txfull'
Die 5V habe ich gemessen.
Aber warum brauche ich einen Pegelwandler
Hier:
www.mikrocontroller.net/articles/Pegelwandler
steht das es ohne geht?