Thats your problem! 11.0592 != 12MHz. You need to change the timer reload value considering 11.0592MHz crystal.siva0182 said:In the pgm soft copy it is rounded off to 12MHz
siva0182 said:Regarding the Connection of serial port to RXD and TXD
I connected 16 WR to pin 2(RXD) of rs232 and 17 RD to pin 3(TXD) of RS232 directly.
There is no driver inbetween becasue i was told it would work.
Yes probably your microcontroller is damaged. RS232 operates at ±12V typical (±25V max) and microcontroller's pins are not meant to handle such high voltages.siva0182 said:But so far bu direclty connecting Rs232 to microcontroller have I damaged the microcontoller?
siva0182 said:I removed all hardware and just tested with only the rs232 cable.
I shorted pin 2 and 3 and sent data thro hyperterminal but the data ws not returned back.
What could be the reason?
I have only one com port and so i am specifying the correct COM port.
The bottom line of hyperterminal sys it is connected.
Do the continuity check of the cable using a multimetersiva0182 said:I have used the same cable in the same port of the same computer to connect to a data acquistion unit..and it did communicate properly.
Have you selected the right COM port and opened it? Can you post the screenshot of hyperterminal?siva0182 said:So There is problem in the way I am using hyperterminal or I am using the wrong pins while testing using hyperterminal.
My hyperterminal does not display any characters even when echo mode is on.
Any idea on why this could be?
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