CPP 59
Mycode Guest on 3rd October 2024 05:23:59 PM
  1.  
  2. #include <mega32a.h>
  3.  
  4. // Alphanumeric LCD functions
  5. #include <alcd.h>
  6. #include <delay.h>
  7.  
  8. typedef struct {
  9.                     unsigned char pa_dir;
  10.                     unsigned char pb_dir;
  11.                     unsigned char pc_dir;
  12.                     unsigned char pd_dir;
  13.                     ////////////////////////////
  14.                     unsigned char pa_val;
  15.                     unsigned char pb_val;
  16.                     unsigned char pc_val;
  17.                     unsigned char pd_val;} gpio_ss;
  18.  
  19.  
  20. gpio_ss pins;
  21.  
  22. void gpio_init (gpio_ss *x)
  23. {
  24.  DDRA = x -> pa_dir;
  25.  DDRB = x -> pb_dir;
  26.  DDRC = x -> pc_dir;
  27.  DDRD = x -> pd_dir;  
  28.  
  29.  PORTA = x -> pa_val;
  30.  PORTB = x -> pb_val;
  31.  PORTC = x -> pc_val;
  32.  PORTD = x -> pd_val;
  33.  
  34. }
  35.  
  36. void set_port(char p_name, unsigned char p_value){
  37.  switch(p_name)  {
  38.     case 'A':
  39.         PORTA=p_value;
  40.     break;
  41.     case 'B':
  42.         PORTB=p_value;
  43.     break;
  44.     case 'C':
  45.         PORTC=p_value;
  46.     break;
  47.     case 'D':
  48.         PORTD=p_value;
  49.     break;
  50.  
  51.    }
  52.  
  53.  
  54. }
  55.  
  56. #define In 0x00
  57. #define Out 0xff
  58.                    
  59.  
  60. void main(void)
  61. {
  62.     pins.pa_dir=Out;
  63.    
  64.    
  65.     gpio_init(&pins);
  66.  
  67. while (1)
  68.       {  
  69.         set_port('A',0xff);  
  70.         delay_ms(500);
  71.         set_port('A',0x00);
  72.         delay_ms(500);
  73.  
  74.  
  75.       }
  76. }

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