putchar and getchar

i have read Mark Odell's UART driver. However,the code size is too large for me. can i just using the simple function call: char x,y; getchar(y); //get char from urat x=y; putchar(x); //put...
putchar and getchar

i have read Mark Odell's UART driver. However,the code size is too large for me. can i just using the simple function call: char x,y; getchar(y); //get char from urat x=y; putchar(x); //put...
Exit from _getkey()

I write function, which recieve 4 characters from serial port with _getkey() function. It waits until all characters does not come. I need to exit from recieving if characters does not come for long time...
Exit from _getkey()

I write function, which recieve 4 characters from serial port with _getkey() function. It waits until all characters does not come. I need to exit from recieving if characters does not come for long time...
Error C231: redefinition (of _getkey)

Hello all, After upgrading from an ancient version of C51 to the latest greatest V8.05A, legacy code does not compile any longer because: Build target 'Target 1' assembling STARTUP.A51... compiling...