AVRFreaks.net

struct stepvalues
   {
      unsigned char pitch;   // Pitch is one byte.
      unsigned char velocity;   // Velocity is one byte.
      unsigned char gate_time;   // Gate time is one byte.
      unsigned int gate:1;   // Gate only needs one bit.
      unsigned int slide:1;   // Slide only needs one bit.
      unsigned int accent:1;   // Accent only needs one bit.
   };


   struct stepvalues ch1[16];   // There are 16 steps (rows) in the pattern   
   struct stepvalues ch2[16];   // and there are two channels

typedef struct
   {
      unsigned char pitch;   // Pitch is one byte.
      unsigned char velocity;   // Velocity is one byte.
      unsigned char gate_time;   // Gate time is one byte.
      unsigned char gate:1;   // Gate only needs one bit.
      unsigned char slide:1;   // Slide only needs one bit.
      unsigned char accent:1;   // Accent only needs one bit.
   } stepvalues;


   stepvalues one_in_ram;
   stepvalues ch1[16] EEMEM = {
     { 31, 50, 10, 0, 1, 0 },
     { 17, 40, 20, 1, 1, 0 },
etc.
   }

   eeprom_read_block(&one_in_ram, &ch1[11], sizeof(ch1[0]));

C:\Documents and Settings\asl\My Documents\Pelles C Projects\cipher\cipher.c(7): error #2186: 'unsigned char' is an illegal bit-field type.
C:\Documents and Settings\asl\My Documents\Pelles C Projects\cipher\cipher.c(8): error #2186: 'unsigned char' is an illegal bit-field type.

#include <stdio.h>
#include <avr/io.h>

typedef struct {
   char n;
   unsigned char foo:1;
   unsigned char bar:1;
} test_t;

test_t test;

int main(int argc, char * argv[]) {
   char buffer[20];
   sprintf(buffer, "size = %d\n", sizeof(test));
}