help with st7540

[bernat_f]

Posted on February 21, 2007 at 10:14

help with st7540

[bernat_f]

Posted on February 17, 2007 at 16:54

hi,

We are creating a netwrk comunication system with this chip 'st7540', nd we have connected it to he st7 mcrocontroler as you can see in the file attache , but when we try to program it the stvd7 fails in the comunication.

Can anyone say if there is any mistake in the schemtic?

[ This message was edited by: bernat on 17-02-2007 21:33 ]

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Attachments :

5115.pdf : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hzzu&d=%2Fa%2F0X0000000bW2%2FbyzDhehc7QC22Q8Zp6MgR6sfaWERfn5vOo8uQR3k01U&asPdf=false

[bernat_f]

Posted on February 19, 2007 at 08:31

I found it, there were just a problem in my st7 pins.

[bernat_f]

Posted on February 21, 2007 at 10:14

I am still having problems with this board, after I try to prove the above program the micro just crashes and don't comunicate again with my indart except if I put a cristal oscilator between the oscilator pins.

After doing this I can't try another time, but its really annoying as I'm trying to program it as slave of

the st7540, what I'm doning wrong?

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Attachments :

Demo.asm : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I0FD&d=%2Fa%2F0X0000000bVz%2FgLjhLlOsgTB5hvtVcL.iQXXMCCXMtVLCqdkO5HmM_a4&asPdf=false