Re: [avr-gcc-list] Glitch on GPIO

[Eric Pasquier]

"Can this be solved?" : external pull-up ?   Eric. ----- Original Message ----- From: Jahagirdar Gopal-AGJ005 To: avr-gcc-list@nongnu.org Sent: Thursday, February 23, 2006 5:10 AM Subject: [avr-gcc-list] Glitch on GPIO 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 _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list

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