| ??? 01/20/13 20:41 Read: times |
#189278 - quasi bidirectional ports Responding to: ???'s previous message |
If you write a '0' to a pin, you can not read a '1'.
you have a conflict. Write first 0xFF to port 2 before reading. Have a look at the I/O construction to understand it. |
| Topic | Author | Date |
| 8051 QUESTION | 01/01/70 00:00 | |
| Input/output | 01/01/70 00:00 | |
| quasi bidirectional ports | 01/01/70 00:00 | |
| Hardware | 01/01/70 00:00 | |
8051 basics | 01/01/70 00:00 |