| ??? 03/12/02 23:19 Read: times |
#20754 - RE: LCD now manually works. |
Ok, I've added 220ohm resistors to every lcd line and now I'm alble to manually initialize teh LCD.. that is, thruogh the bootstrap.
However, no matter what code I send to the chip, it seems to always keep port1 as (0)01101110(7) and EN=1 and RS=RW=0 1 = 5.15v, 0 = 0.06v I programmed it the following: ;p3.7=EN, p3.6=RW, p3.5=RS org 0 ljmp main main: mov p1,00h ;(00000000) mov p3,80h ;(00000001) mov p1,38h ;(00011100) mov p3,00h ;(00000000) idle_here: jmp idle_here end after running this, the ports were like I mentioned above. I verified the code, and even double checked it with the HEX file. It all seems perfect. Maybe its a stupid code error, but I just can't seem to make this work right. |
| Topic | Author | Date |
| How to test a 8051, please help me! | 01/01/70 00:00 | |
| RE: How to test a 8051, please help me! | 01/01/70 00:00 | |
| RE: How to test a 8051, please help me! | 01/01/70 00:00 | |
| RE: How to test a 8051, please help me! | 01/01/70 00:00 | |
| RE: How to test a 8051, Erik! | 01/01/70 00:00 | |
| RE: How to test a 8051 | 01/01/70 00:00 | |
| RE: How to test a 8051, please help me! | 01/01/70 00:00 | |
| new info on LCD prob, please help! | 01/01/70 00:00 | |
| RE: How to test a 8051, please help me! | 01/01/70 00:00 | |
| RE: How to test a 8051, please Aman | 01/01/70 00:00 | |
| RE: new info on LCD prob, Philip | 01/01/70 00:00 | |
| RE: new info on LCD prob, solid blocks | 01/01/70 00:00 | |
| RE: new info on LCD prob, Philip | 01/01/70 00:00 | |
| RE: new info on LCD prob, Philip | 01/01/70 00:00 | |
| RE: LCD now manually works. | 01/01/70 00:00 | |
| RE: How to test a 8051, Erik! | 01/01/70 00:00 | |
| RE: How to test a 8051, Aman | 01/01/70 00:00 | |
KEYPAD | 01/01/70 00:00 |



