| ??? 11/12/08 18:14 Read: times |
#159989 - can this be tested on a 2x40? Responding to: ???'s previous message |
Grant Beattie said:
So if you have a 2x40 or a 4x40 let me know if yours functions properly (and what make/model it is).
The issue is that the LCD does not correctly position the cursor at the last 7 locations on lines 2 or 4. This is DDRAM addresses 0x61 through 0x67 (LCD control reg bytes 0xE1 through 0xE7). Any attempt to issue such a command puts the cursor at 0x60. Can this be tested on a 2x40 module at all? On 4x40 the module I used (some 4 years ago) which I believe is of the "standard" variety, line 2 was mapped at 0x14-0x27 - so is the problem also present at addresses 0x20-0x27, then? I will try tomorrow morning (no such module at home), but if I would not report until say 1200GMT, please drop me an email to remind me. JW |
| Topic | Author | Date |
| Verify bug in character LCD controller | 01/01/70 00:00 | |
| Followup | 01/01/70 00:00 | |
| How many of them fail? | 01/01/70 00:00 | |
| How many fail? | 01/01/70 00:00 | |
| proving a point | 01/01/70 00:00 | |
| Yeah | 01/01/70 00:00 | |
| that't a new one | 01/01/70 00:00 | |
| another | 01/01/70 00:00 | |
| can this be tested on a 2x40? | 01/01/70 00:00 | |
| 2x40 and 4x20 too | 01/01/70 00:00 | |
| sorry for mistifying you... | 01/01/70 00:00 | |
Thanks! | 01/01/70 00:00 |