| ??? 02/04/05 09:40 Read: times |
#86523 - Try this Responding to: ???'s previous message |
Nguyen Nguyen said:
Dear all members,
I am an amateur in working to mP but I like to play with it so much. Now i am trying to connect my PC to the AT89C52. The driver is MAX232. Unfortunately, the PC couldn't receive anything. When i checked the Pin 14 of MAX232, there was a signal but it is (-) level, compare to 0V. I didn't understand what happened? Thanh you Nguyen Nguyen said:
Dear all members,
I am an amateur in working to mP but I like to play with it so much. Now i am trying to connect my PC to the AT89C52. The driver is MAX232. Unfortunately, the PC couldn't receive anything. When i checked the Pin 14 of MAX232, there was a signal but it is (-) level, compare to 0V. I didn't understand what happened? Thanh you Use loop back handshaking on the 9 pin connector that is connected to the Ucontroller do this.Pin 5 ground,connect pin4 to pin6,pin7 to pin8,pin2is txout and pin3 is rxin.With this u should be able to see the data in the hyper terminal of windows. check max232 datasheet for max232 connections.Do as they are given in the datasheet. It works 100% Bye |
| Topic | Author | Date |
| Connect PC to AT89C52 | 01/01/70 00:00 | |
| RS232 Signals | 01/01/70 00:00 | |
| to Joe | 01/01/70 00:00 | |
| Null Modem | 01/01/70 00:00 | |
| To Joe again | 01/01/70 00:00 | |
| how have you wired the MAX232 up? | 01/01/70 00:00 | |
| Fundamentals of RS-232 Serial Comms | 01/01/70 00:00 | |
| App note | 01/01/70 00:00 | |
| Try this | 01/01/70 00:00 | |
link | 01/01/70 00:00 |