| ??? 01/06/02 19:23 Read: times |
#18388 - Data is masked when reading from LCD |
I'm using an LCD based on LC7981 controller, and performing all operations successfully such as writing text and drawing graphics.
Recently it is required to use read_data_from_lcd command to improve performance. It is partly successfull, but all the data read from the LCD is masked with 0xB6. If the data at the position is 0xFF, then I read 0xB6. If it is 0x55 in fact, then I read 0xA2. Please note that I check the busy flag of the controller. Any idea? |
| Topic | Author | Date |
| Data is masked when reading from LCD | 01/01/70 00:00 | |
| RE: Data is masked when reading from LCD | 01/01/70 00:00 | |
| RE: Data is masked when reading from LCD | 01/01/70 00:00 | |
| Why to set FFh to port when using LCD ? | 01/01/70 00:00 | |
| RE: Why to set FFh to port when using LCD ? | 01/01/70 00:00 | |
RE: Data is masked when tran | 01/01/70 00:00 |