Forum Post: RE: How to awake the MCU from LPM3?

thank you for the replay, old_cow_yellow but seems I am stuck with these interrupts. I un commented the following in the RX ISR if (uart.bufRXpnt == uart.RXbuffer+uart.RXbuffer[1]) //uart.RXbuffer[1] includes the length of the received string from the BNO055 { __bic_SR_register_on_exit(LPM3_bits); } but still stuck. So would you please help me by applying the recommended changes into my code? I appreciate your help here is my main as well: #include /* * main.c */ void main(void) { WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer doAccelerationSense(); return; }