View difference between Paste ID: yF0pykaD and 2mWP0Vay

 #include <xs1.h>
 #include <timer.h>
 
 /*
  * the patterns for each bit are:
  *   0x80000 0x40000 0x20000
  *   0x01000 0x00800 0x00400
  *   0x00200 0x00100 0x00080
  *
  * As the leds go to 3V3, 0x00000 drives all 9 leds on, and 0xE1F80 drives
  * all nine leds off.
- * The four patterns below drive a dash, backslash, pipe, and slash.
+ * Add the values from left to right, top to bottom prefixing each value with '~'
  * to turn them on. See example below.
  */
 
 #define MODES 10
 
 int leds[MODES] = {
 0xE1F80,
 /*J*/    ~0x20000 + ~0x01000 + ~0x00400 + ~0x00200 + ~0x00100 + ~0x00080,
 0xE1F80,
 /*E*/    ~0x80000 + ~0x40000 + ~0x20000 + ~0x01000 + ~0x00800 + ~0x00200 + ~0x00100 + ~0x00080,
 0xE1F80,
 /*N*/    ~0x80000 + ~0x40000 + ~0x20000 + ~0x01000 + ~0x00400 + ~0x00200 + ~0x00080,
 0xE1F80,
 /*N*/    ~0x80000 + ~0x40000 + ~0x20000 + ~0x01000 + ~0x00400 + ~0x00200 + ~0x00080,
 0xE1F80,
 /*Y*/    ~0x80000 + ~0x20000 + ~0x00800 + ~0x00100
 };
 
 /* This the port where the leds reside */
 port p32 = XS1_PORT_32A;
 
 int main(void) {
     int delay = 1000;      // initial delay 50 ms
     int led_counter = 0; // A counter to count through the leds array
     while(1) {
         delay_milliseconds(delay);        // Wait
         //delay += 1;                       // Gradually increase the delay
         p32 <: leds[led_counter];         // Drive the next led pattern
         led_counter++;                    // Pick the next pattern
         if (led_counter == MODES) {       // If we are at the last pattern
             led_counter = 0;              // then wrap around.
         }
     }
     return 0;
 }