- case L4: mode4(0x03, row, col, 4, true); mode4(0x05, row, col, 0); break;
- case L3: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<0); break;
- case L2: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<1); break;
- case L1: mode4(0x03, row, col, 4, false); mode4(0x05, row, col, 1<<2); break;