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From: | Jahagirdar Gopal-AGJ005 |
Subject: | [avr-gcc-list] Glitch on GPIO |
Date: | Thu, 23 Feb 2006 12:10:53 +0800 |
HI, I have one peculiar problem here. One of the GPIO of atmega128, has been pulled up. When atmega128
boots up, initialization script makes that GPIO pin high, irrespective of what is
pulled up (Atmega does not start booting immediately
the power is given. There is some delay given purposely between power-up and
execution de-assertion of reset signal). So the expected behavior is
that pin should continue to be high as measured on CRO. But there is a glitch (10us)
on that pin when GPIO is written high by software. Any idea on this behavior? Can this be
solved? -Gopal |
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