My complete LCD Bargraph library

[IstvanK]

Contains an all-in-one function which allows to create parameterized bargraph(s) on an HD44780 compliant LCD.

. Scalable, configurable via predefined mode constants.
. Any width can be used, it's limited by the LCD line lenght only !!
. 8 different mode (variants): 3-5-7 segments and 35 pixels, all twice.
. No any init function since the used custom char is on the fly defined
. Max. 8 independent (even 1..4 char vertical) bargraph can be used
. on the same LCD (because there are only 8 custom chars).

Separated libraries for the three families (pic12/16, pic12/16_Enh and pic18).

Published in precompiled (MCL) form but with description and a lot of working examples:
http://www.libstock.com/projects/view/9 ... ph-library

Animation shows how to operate the different modes:

Bargr0test-Anim.gif (62.38 KiB) Viewed 2590 times

And one of my demo projects (a 8ch PIC voltmeter, program: ADC_9.c):

[p.erasmus]

Very nice work

[marina.petrovic]

Hi,

Thank you very much for sharing your project with our users on forum and LibStock Website.
Indeed it is very useful and good project.

Best regards,
Marina

[IstvanK]

Upon request, I created an improved variant (add to my BarGraph library DEMO programs):

- SW filtering: four measurings/channel then average value will be calculated but only
when it detects a difference compared to the previous (stored) average value, else the
fast scanning (appr 9 ms for the 8 channels) will be continued.

- an improved 50 Hz noise suppression also can be used (with appropriate delays)

- on the fly switchable high-res pixel bargraphs (3-char), now with rounded voltages
and channel-number displaying (it's not the best but the space is limited)

- no floating arithmetics (fast)

- small code (my all-in-one BarGraph function is only 213 bytes long on a P16)

- full scale value = Vref (VCC, now 4.9 V): see the docs.

- resolution = 0.001 V (0.01 V after rounding, if bargraph is ON)

- accuracy = +-0.1% (max 5 mV), plus the PIC's own ADC error, of course

The entire mikroC project is attached, with the C source (detailed comments) and the DSN file.

[marina.petrovic]

Hi,

Once again, thank you very much for sharing your project with our users, we really appreciate it.

Best regards,
Marina

[IstvanK]

Please take a look at this (maybe I posted the wrong place?):
http://www.mikroe.com/forum/viewtopic.p ... 87#p241487