AnsweredAssumed Answered

UART RX Interrupt does not work.

Question asked by John Park on Feb 24, 2018
Latest reply on Apr 5, 2018 by Martin Kovar

Hello. I work with MPC5606B, C, CodeWarrior. matlab.


I've tried to receive UART using RX ISR.


I add this function in main. 


void initUART(void){

LINFLEX_0.UARTCR.B.UART = 1; //enable UART mode
LINFLEX_0.UARTCR.B.WL1 = 1; //set 8-bit data
LINFLEX_0.UARTCR.B.RXEN = 1; //enable RX
LINFLEX_0.LINIER.B.DRIE = 1; //Data Reception Complete Interrupt Enable




and this ISR 



void TEST_UART (void)


LINFLEX_0.UARTSR.B.DRF = 1; //Data Reception Completed Flag

a++; // checking for ON/OFF







each time I send TX, the a increases as my purpose, counting. It means, flag is set when the Board complete data reception.


when I tried to receive RX in main loop, I succeeded. So, There must be no problems in UART configuration. 


I can't find the reason why it doesn't work.


Please help me..