[X9D] LCD driver optimization

2012-12-23 08:41:21 +00:00
parent b7de04020d
commit fd002d68cd
1 changed files with 2 additions and 1 deletions
@@ -27,10 +27,11 @@ void lcdRefresh()
 {  
  for (uint8_t y=0; y<DISPLAY_H; y++) {
    uint8_t *p = &displayBuf[y*DISPLAY_W];
+    uint8_t mask = (1 << (y%8));
    Set_Address(0, y);
    AspiCmd(0xAF);
    for (uint8_t x=0; x<DISPLAY_W; x+=2) {
-      uint8_t data = (p[x] & (1 << (y%8)) ? 0x0F : 0) + (p[x+1] & (1 << (y%8)) ? 0xF0 : 0);
+      uint8_t data = (p[x] & mask ? 0x0F : 0) + (p[x+1] & mask ? 0xF0 : 0);
      WriteData(data);
    }
  }