| ??? 03/09/09 15:54 Read: times |
#163275 - I found out where the problem is Responding to: ???'s previous message |
Hi all,
I found out the problem is on my demultiplexer. I checked all the signals with an oscilloscope and found they are all fine. My circuit actually is the i/o pins of 8051 are connected to the control pins of a demultiplexer. So when MATLAB sent order to the uC, the control pins of demux can be chosen. I checked the signal levels of the control pins are totally okay when sending order from MATLAB to uC. just the chosen channel cannot output the input signal. Could anyone give me some suggestion? |
| Topic | Author | Date |
| how to debug this serial communication | 01/01/70 00:00 | |
| post your '51-side code | 01/01/70 00:00 | |
| My code | 01/01/70 00:00 | |
| your program runs away | 01/01/70 00:00 | |
| Hardware | 01/01/70 00:00 | |
| I will check | 01/01/70 00:00 | |
| Still wrong | 01/01/70 00:00 | |
| Back to hardware | 01/01/70 00:00 | |
| MAX232 | 01/01/70 00:00 | |
| but | 01/01/70 00:00 | |
I found out where the problem is | 01/01/70 00:00 |