Hello.
I have a question.
When I use 41pin in MSP430F67471AIPZ as LCD COM Port, what kind of register bit switch from GPIO to LCD COM function ?
I understand 41pin works as LCD COM Port when I use LCD with the mode using the COM3.
But I don't know what register bit switch to it.
Is it settings LCDON bit to 1? or, LCDMx bit to not 0?
Regards,
uchida-k
Hi Uchida!
From the datasheet you can see that the COM functionality overrules all the other settings for the pin since they are don't care:
So the COM functionality is controlled by the LCD module settings. From the user's guide you get the following:
This text says, that the multiplexing mode sets the required pins to COM functionality and the multiplexing mode is configured here:
As a result, when using 4-mux mode or higher, pin 41 is set to COM3, regardless of any settings of P1SEL, DIR or whatever.
Dennis
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