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Hello ALL, I have a Cygnal 8051F005 µC and I have a problem with sharing the ISD51 with the serial port. The same behavior was described in the thread : http://www.keil.com/forum/docs/thread4890.asp but, unfortunately, there was not any answer which could help. Thank you for any input! With best wishes, S.
What is your exact problem? It is impossible to use the UART interface that is used for ISD51 communication for another user serial interrupt service routine. ISD51 requires exclusive control over the UART since it is implemented via a serial interrupt routine. See also: http://www.keil.com/support/man/docs/isd51/isd51_requirements.htm The only way is to share ASCII I/O in polling mode. See: http://www.keil.com/support/man/docs/isd51/isd51_sw_serialsharing.htm
Thanks, now it is clear. With best regards, S