??? 04/03/07 08:42 Read: times |
#136476 - Not necessarily Responding to: ???'s previous message |
Eugene Yong said:
I am using the exact same serial port that i used to upload the hex code into the 8051, only in an opposite way. The serial port works perfectly for code uploading. When you send code to the 8051, there is only a tiny amount of activity on the Tx from the 8051. It is possible (maybe not likely, but possible), that the Tx from the 8051 just "works" sufficiently for the occasional "ACK" when receiving a download, but cannot maintain sustained transmission... eg, if there's a problem with the RS232 transmitter's charge pump... |