Team,
I got no success to set up pull-up resistor at GIOA[1] (TMDXRM48HDK tool), I'm using IAR ver 6.3.5.2010. Do we have any issue realated with internal pull up?
I made my system work with external resistor, and I'm working at schematics that I will consider external part.
Please advice.
Thanks
Nuncio
Hi Nuncio,
I used HALCoGen and CCSv4 to test the Pull-Up functionality of GIOA[1] with the RM48 HDK. In my case I did not see any issue, the pin with Pin# C2 was set high correctly. I copied my register values (pic below) for the case that only Pull-Up for GIOA[1] is set up (all other GIOs are inputs Pull-Down). Please compare them with your register settings.
1. Make sure the GIO module is brought out of reset correctly => GIO Global Control Register GIOGCR0 (GlbCtrl = 1)
2. GIOA[1] direction is set to input => GIO Data Direction Register GIODIR[A] = 0
3. GIOA[1] pull is enabled => GIO Pull Disable Register GIOPULDIS[A] = 0
4. GIOA[1] pull select is set correctly => GIO Pull Select Register GIOPSL[A] = 2
Does it work if you try another GIO pin to set up as Pull-Up in the way you do it at the moment or do you have only problems setting up this particular GIOA[1] pin as Pull-Up?
Best Regards,
Gregor Fleischhauer
