1 Oct
2013
1 Oct
'13
4:49 p.m.
Hi Eric,
On 01/10/2013 16:26, Eric Nelson wrote:
I'm not sure where you're seeing this in the RM, but in order to read the pad state when not configured as an input, the SION bit needs to be set in the pad mux register on i.MX51/53.
I have checked inside the "37.3.2.2 GPIO Write" for i.MX53 and " 35.4.2.1 Read Value from Pad" for i:MX51, I have not read anything about SION. If someone has found where it is described, please mail !
FWIW, this also works when not muxed as a GPIO, which is really handy for verifying that a PWM is toggling, et cetera.
Well, if you have directly tested it, it is better proofed as by the manuals..then we need the same fix for i.MX51/i.MX53, too.
Thanks, Stefano
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