First, it looks like you posted this message which really applied to a different thread. This should have been posted to the thread on binary conversion here: http://forums.ni.com/ni/board/message?board.id=180&thread.id=20094
But to answer your question:
In line 45, the control PANEL_BINARY_READ is a string control, but you're trying to read its value into an int.
You should GetCtrlVal on PANEL_NUMERIC instead of PANEL_BINARY_READ in line 45.
In line 51, you're trying to read the radix value from PANEL_BINARY_READ, but in the example I posted I read from a ring control to get the radixValue.
If all you want to do is to convert to binary, you don't need to get radixValue or test for VAL_BINARY_FORMAT.
In line 53, you're trying to apply an attribute to your string control that only applies to numeric controls (a radix format).
In line 57, you're trying to write a numeric value to a string control.
You deleted most of the controls from my example, and then tried to assign code that applied to those deleted controls to your remaining controls.
Take a closer look at the example I posted, looking at each control, the callback functions for each control, and how their values are read or set in the program. You need a better understanding on the relationship between controls, variables, and callback functions.
Put a few breakpoints in my example and follow the code execution.
Try this as your binary conversion function.
int BINARY_CONVERSION(void)
{
int currentPosition = 0;
int i = 0, inputValue;
char outputString[64];
// read the input value
GetCtrlVal (panelHandle, PANEL_NUMERIC, &inputValue);
// clear the output string
outputString[0] = '\0';
// convert to binary
// count the bits needed
do{
} while (inputValue >= pow(2,currentPosition++));
// show a minumum of 8 bits
if (currentPosition<8)
currentPosition=8;
// terminate the string
outputString[currentPosition] = '\0';
// fill in one bit at a time, from LSB to MSB
do{
if (inputValue & 1 << i++)
outputString[--currentPosition] = '1';
else
outputString[--currentPosition] = '0';
} while (currentPosition > 0);
SetCtrlVal (panelHandle, PANEL_BINARY_READ, outputString);
return 0;
}
Message Edited by Al S on 08-17-2009 03:12 PM
