| ??? 01/20/06 23:33 Read: times |
#107941 - Very long message multiplexing |
Dear Forum Members,
Be it alpha-numeric LCD or say 7 rows 48 colums LED dot matrix,I have probably a common problem.I can scroll relatively small messages quite good.But if the number of characters increases I fall short of RAM.I thought it to be normal and I was wrong.From market,a AT89C2051 and AT93C66 combination can display about 250 characters continuously.And my software(for AT89C2051 and AT24Cxx) zerks after about 90 characters because after that stack starts and I have to refresh the ram. Kindly explain again how to display say 500 or 999 characters stored in external serial eeprom while I will migrate to a memory mapped board,add a ram to a AT89x52,and try my last code for external RAM Regards. A.S.Rudra (I can imagine a large circular track and a train of the same length is moving continuously on the track.Just before the train enters the platform(SERIAL EEPROM) a passenger jumps out of the train and every time the train leaves the platform a new passenger enters the train.The passengers stand in line. We can see most of the passenger through the windows;invisible passengers represents commands.) |
| Topic | Author | Date |
| Very long message multiplexing | 01/01/70 00:00 | |
| Speed? | 01/01/70 00:00 | |
| does not matter | 01/01/70 00:00 | |
| How Many Chars on Display? | 01/01/70 00:00 | |
| To Ian | 01/01/70 00:00 | |
| Hardware? | 01/01/70 00:00 | |
| Hardware,Ian | 01/01/70 00:00 | |
| Hardware | 01/01/70 00:00 | |
| When erik and oleg can spare time? | 01/01/70 00:00 | |
| Such impudence! | 01/01/70 00:00 | |
| exactly | 01/01/70 00:00 | |
| a circular buffer does not require data | 01/01/70 00:00 | |
indeed but | 01/01/70 00:00 | |
| circular buffer | 01/01/70 00:00 | |
| Really Dan I said experienced.. | 01/01/70 00:00 | |
| Are you the 1st one? | 01/01/70 00:00 | |
| by the way I have no experienceI | 01/01/70 00:00 |