Tech Support > Computer Hardware > Microprocessors > iMX31 ARM Processor
iMX31 ARM Processor
Posted by vcpatel36@gmail.com on May 18th, 2008


I am working on a project with the iMX31 processor. I have seen some
posts in this group about people using this processor so I hope
someone can help out. I need to tri-state a GPIO pin in this
processor. I have looked in the Reference Manual and it doesn't
mention any option to set it in tri-state. Essentially this is for a
case where an external line is connected to the same pin as the iMX
and only one of them can be driving the line. In case the iMX
processor isn't driving the line it must be tristated. I hope someone
who has used this processor before can help me out on this. Thanks.

Posted by larwe on May 18th, 2008


On May 18, 6:35*pm, vcpate...@gmail.com wrote:
Since I spent all Friday in a Freescale-hosted training session on
this processor (lots of great freebies , I got all excited at the
thought of putting this raw knowledge to use. Then I read your actual
question.

Configure the pin as an input.