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error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before '{' token

8 New Member
Hi
I am using WINAVR compiler for ATMEGA32. While compiling c progam , I am getting the error
error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribu te__’ before '{' token
before evrey function.

code:


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  1. #include <avr\io.h>
  2.  
  3. #include <stdio.h>
  4.  
  5. #include <avr\delay.h>
  6.  
  7. #include <math.h>
  8.  
  9. void initialize(void);
  10.  
  11. char val;
  12.  
  13.  
  14.  
  15. // current measurement state
  16.  
  17. enum {PULSE, GSR, BREATH} measure, nextmeasure;
  18.  
  19.  
  20.  
  21. // current signal voltages
  22.  
  23. char pulseV = 0;
  24.  
  25. char gsrV = 0;
  26.  
  27. char breathV = 0;
  28.  
  29.  
  30.  
  31. // enter every 100Hz
  32.  
  33. interrupt(TIM0_COM) void getAD(void)
  34.  
  35. {
  36.  
  37.     // sample A/D and store
  38.  
  39.     val = ADCH;
  40.  
  41.     // start a/d converter
  42.  
  43.     switch(measure)
  44.  
  45.     {
  46.  
  47.         case PULSE:
  48.  
  49.             pulseV = val << 1;
  50.  
  51.             nextmeasure = GSR;
  52.  
  53.             break;
  54.  
  55.         case GSR:
  56.  
  57.             gsrV = val;
  58.  
  59.             nextmeasure = BREATH;
  60.  
  61.             break;
  62.  
  63.         case BREATH:
  64.  
  65.             breathV = val;
  66.  
  67.             nextmeasure = PULSE;
  68.  
  69.             break;
  70.  
  71.     }
  72.  
  73.  
  74.  
  75.     switch(nextmeasure)
  76.  
  77.     {
  78.  
  79.         case PULSE:  ADMUX = 0b01100001; break;
  80.  
  81.         case GSR:    ADMUX = 0b01100010; break;
  82.  
  83.         case BREATH: ADMUX = 0b01100011; break;
  84.  
  85.     }
  86.  
  87.     measure = nextmeasure;
  88.  
  89.  
  90.  
  91.     ADCSR.6 = 1;
  92.  
  93. }
  94.  
  95.  
  96.  
  97. // send signals to MATLAB for drawing
  98.  
  99. void transmit()
  100.  
  101. {
  102.  
  103.     printf("%d ", (int)pulseV);
  104.  
  105.     printf("%d ", (int)gsrV);
  106.  
  107.     printf("%d ", (int)breathV);
  108.  
  109.     printf("\r");    // end packet
  110.  
  111.     PORTD.7 = ~PORTD.7;
  112.  
  113. }
  114.  
  115.  
  116.  
  117. // read A/D converter and communicate with MATLAB
  118.  
  119. void main(void)
  120.  
  121. {
  122.  
  123.     char inchar;
  124.  
  125.  
  126.  
  127.     initialize();
  128.  
  129.  
  130.  
  131.     while(1)
  132.  
  133.     {
  134.  
  135.         // when signaled by MATLAB, return current values
  136.  
  137.         if (UCSRA.7)
  138.  
  139.         {
  140.  
  141.             inchar = UDR;
  142.  
  143.             if (inchar=='s') {
  144.  
  145.                 transmit();
  146.  
  147.             }
  148.  
  149.         }
  150.  
  151.     }
  152.  
  153. }
  154.  
  155.  
  156.  
  157. // setup
  158.  
  159. void initialize(void)
  160.  
  161. {
  162.  
  163.     // comm indicator LED
  164.  
  165.     DDRD.7 = 1;
  166.  
  167.     PORTD.7 = 0;
  168.  
  169.  
  170.  
  171.     // serial RS-232  setup for debugging using printf, etc.
  172.  
  173.     UCSRB = 0x18;
  174.  
  175.     UBRRL = 103;
  176.  
  177.  
  178.  
  179.     // set up timer0 to sample a/d at about 100Hz
  180.  
  181.     TCCR0 = 0b00000101;
  182.  
  183.     TIMSK = 0b00000010;
  184.  
  185.     OCR0 = 156;
  186.  
  187.  
  188.  
  189.     // set up a/d for external Vref, channel 0
  190.  
  191.     // channel zero / left adj / AVcc Reference
  192.  
  193.     // A1=PULSE, A2=GSR, A3=BREATH
  194.  
  195.     ADMUX = 0b01100001;
  196.  
  197.  
  198.  
  199.     // enable ADC and set prescaler to 1/128*16MHz=125kHz
  200.  
  201.     // and clear interupt enable
  202.  
  203.     // and start a conversion
  204.  
  205.     ADCSR = 0b11000111;
  206.  
  207.  
  208.  
  209.     measure = PULSE;
  210.  
  211.     _sei();
  212.  
  213. }
Oct 18 '09
10 32001
I have had this error and found that there was a ";" missing at the end of one of the statements in one of my .h files.
Nov 17 '10 #11

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