Hi,
I am working on MKM34Z256xxx7, it is connected to 32pin segment LCD and LPUART for communication purpose(both are working fine).
I run the controller in VLPR and VLPS modes by switching for every 1 second. I'm using LCD on PORTA, PORTB, PORTC, PORTD and LPUART on PORTI. The issue is, if I turn on all LCD segments by will filling (0xFF) in respective waveform registers and try to send some data on LPUART, I could able to receive only a few bytes on interrupt, not getting interrupt for rest of other bytes. The LPUART interrupts are not working. If I turn off a any single segment by writing (0x00) on LCD waveform registers, then my data goes normally on LPUART.
I verified clock initializations, interrupt enable/disable stuff, respective voltages on LPUART rx/tx pins, waveforms and controller switch to VLPR whenever it get tx/rx/edge interrupts as well. I also found that if I keeps running in VLPR state, then everything working fine as expected. I was been working on this from past 3 days.
Please help me to crack this strange issue I'm facing. Thanks in advance.
Regards,
Avinash.
