No Bootup

philip1 · ‎2005-04-19

Posted on April 19, 2005 at 09:27

No Bootup

philip1 · ‎2005-03-07

Posted on March 07, 2005 at 13:58

Hello,

I've just begun powering up my first product with an ST10F269 in it. I have been able to talk to it with ST10flasher and I have programmed the Flash memory but when I switch to normal mode it just doesn't start up. The RSTOUT pin stays low suggesting that it never reaches the EINIT instruction.

I have checked all the usual chip initialisation things and the only thing I'm not sure about is this RPD pin. Could it cause a problem like this? I have connected the RC network to it as suggested in the data-sheet, I've also tried tying it to ground but no success.

Any suggestions would be gratefully received

PhilipJ

michele239955 · ‎2005-03-09

Posted on March 09, 2005 at 13:27

Maybe it's too trivial... but have you checked that EA pin is high?

[ This message was edited by: linusplus on 09-03-2005 17:58 ]

philip1 · ‎2005-04-19

Posted on April 19, 2005 at 09:27

Sorry I should have checked back long ago and finished this one off.

The Keil compiler tricked me, there wasn't a ST10F269.A66 startup file so I used the ST10F168.A66 file. It put the internal RAM at a different address so my program never got started due to its variables being written into ''empty space''.

lesson to me - next time check EVERYTHING!!!!