babinton
Member level 4
Hi everyone, I am a newbie to PIC programming, and I want to use a PIC16F877A the a 4MHz crystal oscillator to control a 5x7 scrolling Message LED Display board.
I already have by board and circuit design with components already soldered on the board. My main problem is that I am trying to code a 1 seconds delay for testing my display board to flash a column of LED once every second but I seem to be stuck at the delay routine.
Please, help me with a code snippet for the 1 second delay routine. Also, if anyone can give a detail explanation of how the scanning of the row and column of the 5x7 LED display works using CD4017 johnson counter, I will be very grateful.
Thanks,
I already have by board and circuit design with components already soldered on the board. My main problem is that I am trying to code a 1 seconds delay for testing my display board to flash a column of LED once every second but I seem to be stuck at the delay routine.
Please, help me with a code snippet for the 1 second delay routine. Also, if anyone can give a detail explanation of how the scanning of the row and column of the 5x7 LED display works using CD4017 johnson counter, I will be very grateful.
Thanks,