avrxmega7 device-not-found

Hi All.

I am trying to build a hello-world program using a linux-gcc-toolchain.


Following is the program ::

#####################################################
/* ledblink.c, an LED blinking program */

#include<avr/io.h>
#include<util/delay.h>
void sleep(uint8_t millisec)
{
        while(millisec)

        {
                _delay_ms(1);/* 1 ms delay */
                millisec--;
        }
}
main()
{

        DDRC |=1<<PC2;  /* PC2 will now be the output pin */
        while(1)
        {
                PORTC &= ~(1<<PC2);/* PC2 LOW */
                sleep(100);/* 100 ms delay */

                PORTC |=(1<<PC2); /* PC2 HIGH */
                sleep(100);/* 100 ms delay */
        }
}
#####################################################




When I compile with -mmcu=atmega8, the device is found, and the program
builds fine.



However with avrxmega7, it fails at the very beginning, with the error
"device not found" ::

#####################################################
ajay@ajay-HP-15-Notebook-PC:~$ avr-gcc -mmcu=avrxmega7 ledblink.c -o
ledblink.o
In file included from ledblink.c:2:0:
/usr/lib/avr/include/avr/io.h:428:6: warning: #warning "device type not
defined" [-Wcpp]
 #    warning "device type not defined"
      ^
In file included from ledblink.c:3:0:
/usr/lib/avr/include/util/delay.h:90:3: warning: #warning "F_CPU not
defined for <util/delay.h>" [-Wcpp]
 # warning "F_CPU not defined for <util/delay.h>"
   ^
/usr/lib/avr/include/util/delay.h:95:3: warning: #warning "Compiler
optimizations disabled; functions from <util/delay.h> won't work as
designed" [-Wcpp]
 # warning "Compiler optimizations disabled; functions from <util/delay.h>
won't work as designed"
   ^
ledblink.c: In function ‘main’:
ledblink.c:16:9: error: ‘DDRC’ undeclared (first use in this function)
         DDRC |=1<<PC2;  /* PC2 will now be the output pin */
         ^
ledblink.c:16:9: note: each undeclared identifier is reported only once for
each function it appears in
ledblink.c:16:19: error: ‘PC2’ undeclared (first use in this function)
         DDRC |=1<<PC2;  /* PC2 will now be the output pin */
                   ^
ledblink.c:19:17: error: ‘PORTC’ undeclared (first use in this function)
                 PORTC &= ~(1<<PC2);/* PC2 LOW */
#####################################################




Following are the various package-versions ::

#####################################################
ajay@ajay-HP-15-Notebook-PC:~$ dpkg -l | grep avr
ii  avr-libc
1:1.8.0-4.1                                         all          Standard C
library for Atmel AVR development
ii  avrdude
6.0.1-1                                             i386         software
for programming Atmel AVR microcontrollers
ii  binutils-avr
2.23.1-2.1                                          i386         Binary
utilities supporting Atmel's AVR targets
ii  gcc-avr
1:4.8-2.1                                           i386         The GNU C
compiler (cross compiler for avr)
ii  gdb-avr
7.6-1                                               i386         The GNU
Debugger for avr
ii  libavresample2:i386
6:11-1trusty                                        i386         Libav
audio resampling library
#####################################################


What am I missing?


-- 
Regards,
Ajay

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