Hello all,
I am working on a project in which i've to display messages which changes for every 3 seconds as a part of start up routine.
I am using 8, 7-segment displays which are multiplexed by using a BCD decimal decoder. The multiplexed segments are connected to pins P4.0 to P4.7 and the BCD input pins are connected to pins P3.0 to P3.4. 6644.GT_2500_LED_TEST.rar
I am refreshing the 7-segment displays every 1millisecond i.e., it takes 8miliseconds to complete all the 8 7-segment displays.
The problem i am facing is when i want to change the data which i've to sent to display for every 3 seconds by using a global variable called message of type unsigned char, the message value is not updating, i am unable to find what is reason.
Also i am attaching my source code. Please reply me with your valuable suggestions
Thank you,
Ch. Shravan Kumar