GPIO port difference

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by korndoerfer on Tue May 06 05:20:12 MST 2014
I am running the LPC-1115 with complex software after conversion coming from a P89V664 used for long time before.
A lot is running fine using LCD-Display, I2C, SSP, and a lot of GPIO-bits.
The problem is that identical LPC_GPIO on different ports are not working.
The port usage is:
Port 0: I2c, SWIO,  individual GPIO
Port 1: UART, PWM,  individual GPIO
Port 2: SSP, LCD-GPIO,  individual GPIO
Port 3: individual GPIO
The individual GPIO are working only on port 2.
For test I did use in sequence portNum and bitPosi:
GPIOSetDir (portNum, bitPos, 1);set out  for output
GPIOSetValue (portNum, bitPos, 0);set low
GPIOSetValue (portNum, bitPos, 1);set high

The test using ‘MASKED_ACCESS’ did nothing change.
Is there any masking function which I did not recognize?
Thank you for helping.