I am looking for a code snippet do display 8 DMX channel values on a 16x2 LCD (This Line) using Barngraphs + C51 + 8051M.
I searched the hole net but could not find any, there are codes for showing vu-meter but the bargraph is horizontal. I want them vertical.
Any help is wanted
regards
If you want them vertical you can use the same code. Just change the LCD routines to "write-custom-chars" and then you can draw the values vertical. You just need to calculate them a little bit because one char has 7*5 (8*5) dots.
If you have two lines (2 chars in one column = 1 bar): The lower and the upper char of the first column are both 50% of the whole value (100% = 10 for example). The lower char displays every value from 0%-49% and the upper one from 50%-100%. I use this methode if I need to read all ADC channels for example.
Simple Calculation: k = 10 = 100% x = input (0-10+)
y=((100/k)*x) --> Input signal in %
1.0) if y <= 49 then clear the upper char 1.1) ROUND( y/7 ) --> amount of filled lines for the lower char
2.0) else if y > 49 then fill the lower char completely 2.1) ROUND( (y-50)/7 ) --> amount of filled lines for the upper char
optional: 3.0) else if y > 10 then fill lower+upper char or ERROR
4.0) else clear lower+upper char
Maybe I'll upload some pictures tomorrow if I have time too.