PinMux Bug in LPCOpen?

[jamesm]

I am using pin P1.25 on an LPC1759 as a Match Register output pin. The documentation shows only 3 functions for that pin, with MAT1[1] as the third. However, I set it as IOCON_FUNC2 (third function), I get no output. I get expected output on that pin if I set it to IOCON_FUNC3 with the function:

Chip_IOCON_PinMuxSet(pIOCON, 1, 25, IOCON_MODE_INACT | IOCON_FUNC3);

What am I missing?

Thanks in Advance - james

[jeremyzhou · Accepted solution]

Hi James Massey,

According to the reference manual, the P1.25 work as the MAT1.1 when select the Function 3 instead of the Function 2, as the fig 1 illustrate.

Have a great day,
Ping

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------