| ??? 02/21/05 00:34 Read: times |
#88023 - 8051 RS232 comunication |
Hello everyone. I read few posting regarding Rs232 and VB comunication. But I did not find the solution...I have this problem:
- I'm sending a letter from an 8051 to a VB software in Windows. It works. - Now I need to send a command from the VB software to the 8051. Doesn't work! This is what I did: Assembler code for the 8051: WAIT3: JNB RI, WAIT3 ;Wait for reception to be completed. MOV A, SBUF ; put the character in A CLR RI ; clear the receive flag MOV R5, A ; save the value In VB I did: MSComm1.Output = "K" + Chr$(13) ' to send the character K The 8051 stops working like it's waiting for the character... Any idea? Thanks. Alex |
| Topic | Author | Date |
| 8051 <-> RS232 comunication | 01/01/70 00:00 | |
| VB to Microcontroller | 01/01/70 00:00 | |
| Very Informative! | 01/01/70 00:00 | |
| Language(s)? | 01/01/70 00:00 | |
| Languages | 01/01/70 00:00 | |
| Line buffering? | 01/01/70 00:00 | |
| furthermore Russell Bull | 01/01/70 00:00 | |
| Line buffering | 01/01/70 00:00 | |
| buffer | 01/01/70 00:00 | |
| Serial Comms and Visual Basic | 01/01/70 00:00 | |
| Another URL | 01/01/70 00:00 | |
| MSComm config | 01/01/70 00:00 | |
| More on VB setup | 01/01/70 00:00 | |
| VB Setup | 01/01/70 00:00 | |
| Code for 8051/VB | 01/01/70 00:00 | |
| Thank you | 01/01/70 00:00 | |
| MSDN | 01/01/70 00:00 | |
| Flush your buffers | 01/01/70 00:00 | |
| Stu | 01/01/70 00:00 | |
| REN ??? | 01/01/70 00:00 | |
| REN !! | 01/01/70 00:00 | |
| Hardware/software | 01/01/70 00:00 | |
| Got a MAX232 or 1488/9 chip? | 01/01/70 00:00 | |
MAX232 and oscilloscope | 01/01/70 00:00 |