| ??? 02/19/03 16:24 Read: times |
#39428 - 8051 Port 0 |
Hi,
I'm polling micro switchs on 8051(0V when pressed, 5V when unpressed). A 4.7kOhm pull up resistor is used on switch. I can poll them fine with P2 using JNB code segments and LED used to confirm pressing. However, this does not work with P0. Is this as its open drain and any ideas for a remedy? Cheers James |
| Topic | Author | Date |
| 8051 Port 0 | 01/01/70 00:00 | |
| RE: 8051 Port 0 | 01/01/70 00:00 | |
| RE: 8051 Port 0 | 01/01/70 00:00 | |
| RE: 8051 Port 0 | 01/01/70 00:00 | |
| RE: 8051 Port 0 / James | 01/01/70 00:00 | |
| RE: 8051 Port 0 | 01/01/70 00:00 | |
| RE: 8051 Port 0 | 01/01/70 00:00 | |
RE: 8051 Port 0 | 01/01/70 00:00 |