MSComm control serial data processing problem

alexyu

The data sent by the external device to the serial port is hexadecimal, and I read it in binary:
m_ComPort.SetInputMode (1);
What should I do with the data after reading it to convert it to a decimal number?
VARIANT variant_inp;
COleSafeArray safearray_inp;
LONG len, k;
BYTE rxdata [2048]; // Set BYTE array
CString strtemp;
if (m_ctrlComm.GetCommEvent () == 2)
{
variant_inp = m_ctrlComm.GetInput (); // Read buffer
safearray_inp = variant_inp; // VARIANT type variables are converted to ColeSafeArray type variables
len = safearray_inp.GetOneDimSize (); // Get effective data length
for (k = 0; k <len; k ++)
safearray_inp.GetElement (&k, rxdata + k); // Convert to BYTE type array


When i write like this
safearray_inp = variant_inp; // VARIANT type variables are converted to ColeSafeArray type variables
When the program is running, I get an exception in this sentence.I read a lot of information and wrote it like this. I don't know why. Please help me!

xiaoyu1213

This...the computer doesn't matter what decimal or hexadecimal you are... these prohibitions are all prescribed by people for good communication!

xiaoyu1213

However, if it is a simple serial port application, you can use the control. The more complicated one is the API, which is flexible and convenient, and the MSCOMM control has a bug under high-speed communication.

alexyu

No one answered?
What should I do if the data I read is incomplete?