| ??? 05/02/06 06:38 Read: times |
#115320 - Problem Responding to: ???'s previous message |
Andrew Kovalyov said:
So as you see I put 1 in P0.0 (0 line in keypad) in output latch. And in P0.1 and P0.0 in input appears "1" too (0 and 1 row in keypad), as I clicked A and 2 in keypad. But I can't read number from input, when I do mov a, p0. May be I do all wrong. But I thought that mov p0, a worked with output latch and mov p0, a worked with input. The problem is your project is configured to select the lines with P0.0, P0.1, and P0.2 but is also configured to read the return value on the same lines. That's an impossible configuration. You can't select the keypad row with the same lines as you use to read the keys of that row. Regards, Craig Steiner |
| Topic | Author | Date |
| Pinnacle 52 & Ports | 01/01/70 00:00 | |
| I had trouble too | 01/01/70 00:00 | |
| My project options | 01/01/70 00:00 | |
| Problem | 01/01/70 00:00 | |
| it's not 3x3 | 01/01/70 00:00 | |
Thank you. | 01/01/70 00:00 | |
| Thank you. | 01/01/70 00:00 | |
| A buggy program? | 01/01/70 00:00 | |
| '51 port behaviour | 01/01/70 00:00 | |
| (+) | 01/01/70 00:00 |