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#1
 
08-15-2009, 09:15 AM
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Hi, is there any possibility to have all output pins in low status in parallel port during restart or starting the system. I have a problem that when i start system there are always three pins high (pins 14, 16 and 17) until i run my hal file. Thanks.  |
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#2
08-15-2009, 10:09 AM
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| Your breakout board should have a 'charge pump' or 'watch dog' type circuit that only activates the breakout board outputs when it gets the correct signal.. (like maybe a 1khz signal) As far as I know - there is no way of knowing what the printer port is doing at bootup/before emc runs. sam |
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| booting status, parallel port |
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