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plugins that use custom chars not showing right

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yoelian
Posts: 7
Joined: August 21st, 2014, 3:11 pm

plugins that use custom chars not showing right

Post by yoelian »

I have this VFD which doesn't use the same method for working with custom user defined characters:
- the custom chars are defined by columns instead of rows, 5 bytes representing columns from left to right
- they are 5x7 (not 5x8) characters
- custom chars can be assigned to any (20h to FFh) ascii char, there's a command to alternate the use of custom/standard characters.
- i've been unable to make 'em permanent, store to EEPROM command doesn't work i think it is maybe not supported by my VFD, so any changes are lost when the VFD is reset.

I have been able to make Bar plugin look right by assigning custom chars to 83h, 84h and 9Eh at Initialization time.

Was trying to get the source for Bar plugin but didn't find it in CVS repository, i was hoping to be able to make some modifications to it to make it compatible with these kind of old VFD's(customer displays).

hydrolisk1792
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Posts: 305
Joined: July 23rd, 2010, 8:32 pm
Location: Las Vegas, NV USA
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Re: plugins that use custom chars not showing right

Post by hydrolisk1792 »

I think there is a command missing that you need to do to flash the characters to the display. I have the same problem with all my Customer displays and just have to use the search and replace plugin to make the characters work (somewhat) with the built in fonts. Most customer displays have lines in the character sets which makes "okay" bar graphs. Also most have the block character which is nice for making the bar graphs as well.

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