| ??? 02/25/06 05:32 Read: times |
#110745 - re: serial comms Responding to: ???'s previous message |
Ashwin V said:
Yes, I want to make an asynchronous connection between two 8051 chips, but i don't wanna use the rs232. Is it possible by just fusing the rxd to txd and txd to rxd pins of the 2 chips?????? Yes, it's OK to do this. The 8251 UART chip provides 'rts' and 'cts' for handshaking, does the inbuilt UART of 8051 provide this kind of handshaking??? I agree that 8051 doesn't have these pins but how does it provide handshaking to other devices???? If you need handshaking, implement it with other port pins. Simply decide that one port pin is RTS (an output) and another is CTS (an input). Connect RTS on micro #1 to CTS on micro #2, and of course RTS on micro #2 to CTS on micro #1. You'll have to write some application-specific code to assert RTS and read CTS as necessary. -a |
| Topic | Author | Date |
| project-serial communication | 01/01/70 00:00 | |
| first requirement is to read | 01/01/70 00:00 | |
| What do you mean? | 01/01/70 00:00 | |
| project-serial communication | 01/01/70 00:00 | |
| re: serial comms | 01/01/70 00:00 | |
| Proviso | 01/01/70 00:00 | |
| HW flow control options/alternatives | 01/01/70 00:00 | |
| board to board or all on one board | 01/01/70 00:00 | |
| Good idea | 01/01/70 00:00 | |
| Self-pacing | 01/01/70 00:00 | |
| 8051 serial comm. | 01/01/70 00:00 | |
| oh yes | 01/01/70 00:00 | |
| Mahesh's web site | 01/01/70 00:00 | |
| He's a Pseudo-Programmer | 01/01/70 00:00 | |
| Me too. | 01/01/70 00:00 | |
what I noted | 01/01/70 00:00 |