When i used Port 0 assigned on Uarte rx tx pin , everything was ok.
But when i changed the rx tx pin to port 1 , for example p1.00,p1.08.p1.09, it doznt work...
i am sure i used the right macro for pin map NRF_GPIO_PIN_MAP().
this problem seems like an previous bug called "Port1 could not assgin on low power pwm",please just search it for sure in devzone.
my sdk is 15.3.0 for zigbee and thread.
Thanks.