 #define MHZ 72
 #define HTZ 72000000
 
-int lo = LOW;
-int hi = HIGH;
+#define LED_PIN 13
 
 #define DIG 24
 int digi[DIG] = { 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 };
-int led_is = 23;
 
 #define ANA 1
 int16_t wave[256];

        case GOGOGO: process_runtime_command(); break;
        default: break;
      }
      now = ARM_DWT_CYCCNT;
      delta = now - tick;
      tick = now;
      global_clock += delta;
      io_anyway = global_clock;
      io_anyway += MHZ * MAX_BUSY_US;
      yell("p");
    }
    else yell("_");
  }
  delay(100);
}

    if (i < bufi) {
      if (memcmp("IDENTITY", buf+1, 8) != 0) {
        error_with_message("Expected ^IDENTITY found:", (char*)buf, bufi);
        discard_command();
        return;
      }
      ensure_eeprom_is(buf + 9, 8, i-1, WHON - 2);
      discard_buf(i+1);
    }
    else if (bufi >= WHON) {
      error_with_message("^ without $ in: ", (char*)buf, bufi);
      discard_command();
    }
    return;
  }
