.net serial port

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I use serialport->write(myCharArray,offset,count) to send my data.

I convert::tochar 0x3E and 0x02 to a unsign char array and send them,and i use serialPort->read(myAnotherCharArray,offset,count)to read back the feedback but fail,it always contain 0.

I can use hyper terminal to communicate with my device.In hyper terminal,i send '>' and ' '(i cant show this in ,anyway i hold alt and key in 02 and release the alt key).What is the format of this 2 data i send?

Is it wrong to use convert::tochar to convert my hex to a char??

Anyone please teach me how to send the same data as in hyper terminal(the setting in hyper terminal is default) by using serial port.

Posted 6-Sep-10 4:30am

tuolesi

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Richard MacCutchan · Accepted Answer · 2010-09-06T09:27:00

Solution 1

The value x02 is a byte value, although it has no visual representation in the ASCII character set (if memory serves it is the STX character). If you wish to send this byte to your remote device then just send it, do not try and convert it to something else.

Posted 6-Sep-10 9:27am

Richard MacCutchan