Hi everyone,

Bit of an odd one here but i'm lloking for a way to check if NO key is being pressed. I know I can use getch() to get a key press but this is stumping me.

I would normally use kbhit(), but this is in the conio.h which isn't included?

Thanks in advance

Martin

Hi Martin,

I presume you are using Serial or USB Serial. If so, try using readable(). It returns 1 if there is a character available to read, otherwise it returns 0. The Handbook PC Serial page contains an example.

Paul

Thanks Paul, I must have missed that! I will give it a try.

Hi Martin,

What kind of keyboard are you using?  A standard PC keyboard shouldn't work with USB Serial because it uses USB HID.

Anders

Hi Anders.

Thanks for your reply. I am using a standard UK keyboard. I have solved the problem.

To keep the story short I kept getting a character appear on the screen when I didn't want it to. Thought I could sort it by checking there were no character waiting to be written, it didn't work.

Finally solved it by using fflush(connection) to wipe the buffer. 

Thanks for your help guys.

Martin