L138 & NDK interrupt latency

Hi,

We have a LCDKL138 kit and we have executed firmware that uses the McASP through interruptions without any problem at all. We have also used a basic firmware with the NDK v.2.22.3.20 without any inconvinience. The problem is when we try to combine both firmware. We have noticed that the transmit under run condition (bit 0 of the XTAT) is set so the McASP stops working a couple of seconds after launching the program. We think this is because the NDK stack introduces an excessive latency on the service of the interrupts. Could someone guide us how to solve this problem?

Thanks in advance.