David, I will put full sources as package next week. I have finished this project yesterday/today at 1:30 am
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| New tutorials/demo projects from 8devices team https://www.8devices.com/community/viewtopic.php?f=3&t=72 |
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| Author: | Saulius [ 25 Mar 2012, 07:11 ] |
| Post subject: | New tutorials/demo projects from 8devices team |
Demo project, describing how to connect LED matrix to Carambola using HT1632 LED driver. http://www.8devices.com/wiki_carambola/ ... ing_ht1632 |
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| Author: | David [ 25 Mar 2012, 10:58 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
| Author: | Saulius [ 25 Mar 2012, 11:01 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
David, I will put full sources as package next week. I have finished this project yesterday/today at 1:30 am
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| Author: | David [ 25 Mar 2012, 11:09 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
| Author: | Saulius [ 25 Mar 2012, 13:15 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
I was a bit faster than I thought. Sorry it is not much documented, but at least it can be compiled and works - |
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| Author: | Saulius [ 25 Mar 2012, 15:17 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
| Author: | David [ 25 Mar 2012, 19:23 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
Ah, that makes it a lot clearer. I assume this is a lot faster than accessing /dev/gpio and /sys/class/gpio? |
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| Author: | Saulius [ 25 Mar 2012, 20:01 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
I don't know what times you have got using /dev/gpio and /sys/class/gpio, but see attached screenshots from oscilloscope. Software - this exact clock. Single bit on data line 230ns (freq: 4.35MHz). Full update of 8x32 pixels + extras 410us (freq: 2.44kHz) Actually I was a bit surprised, thought it will be much slower. Now I hope to see more projects from you (and all community)
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| Author: | David [ 25 Mar 2012, 20:48 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
If memory serves me correct, I reach about 270kHz using /dev/gpio. A lot slower than your method, so it is worth experimenting a bit more
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| Author: | Saulius [ 27 Mar 2012, 20:38 ] |
| Post subject: | Re: New tutorials/demo projects from 8devices team |
Ok, here we go |
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