Subversion Repositories mips_enhanced

// Set Base address

int *sui = (int *) 0x80000400;

void delay(n) {

  int i;

  for (i=0;i<n;i++) {

  }

}

// Character LCD

void display_update(data, mode)

char    data;

int     mode;

{

        int     lcd_control_data, extended_mode, extended_data, lcd_data_read;

        extended_mode = (mode << 12) & 0x00001000;

        extended_data = data & 0x000000ff;

        lcd_control_data = extended_mode | extended_data;

        sui[2] = lcd_control_data;

        sui[2] = lcd_control_data | 0x00000100; // EN=1

        delay(5000);

        sui[2] = lcd_control_data;

        delay(5000);

        return;

}

void lcd_init()

{

        int lcd_count;

        static char lcd_data_init[6] =  {0x38, 0x06, 0x0c, 0x01, 0x80};

        delay(150000);

        for (lcd_count = 0; lcd_count < 6; lcd_count++) {

                display_update( lcd_data_init[lcd_count], 0);

                delay(500000);

        }

        delay(500000);

        return;

}

void lcd_write(char *s) {

  while (*s)  {

    display_update(*s, 1);

    s++;

  }

  return;

}

void lcd_clear()

{

        display_update(0x01, 0);

        return;

}

// 7 Segment LED

void led7_write_int(int val) {

  static char led_seg[16] = {

//  0     1     2     3    

    0x3F, 0x06, 0x5B, 0x4F,

//  4     5     6     7

    0x66, 0x6D, 0x7C, 0x07,

//  8     9

    0x7F, 0x67, 0x00, 0x00,

    0x00, 0x00, 0x00, 0x00

  };

  unsigned int led_val;

  led_val = led_seg[val & 0x000F] | (led_seg[val>>4 & 0x000F]<<8);

  led_val ^= 0xFFFFFFFF;

  sui[1] = led_val;

}

main() {

  int val;

  // Say hello on LCD

  lcd_init();

  lcd_write("Testing SPARC V8 LCD");

  // write something to 7 Segment LED's

  led7_write_int(0x1234);

  // Blink single LEDs

  while (1) {

        sui[0] = val;

        val++;

        delay(100000);

  }

}