topic Re: rt1050 RTC cannot start. in MCUXpresso SDK

rt1050 RTC cannot start.

meitifire — Mon, 26 Jul 2021 09:38:25 GMT

Run evkbimxrt1050_snvs_hp_rtc demo application on our RT1050 board. the application entries to the dead loop here:

static inline void SNVS_HP_RTC_StartTimer(SNVS_Type *base)
{
base->HPCR |= SNVS_HPCR_RTC_EN_MASK;
while (0U == (base->HPCR & SNVS_HPCR_RTC_EN_MASK))
{
}
}

we cannot start the HP_RTC, we retry the evkbimxrt1050_snvs_lp_rtc demo application, the SNVS_LP_SRTC_StartTimer(SNVS) has the same deep loop on our RT1050 board.

the two RTC demo runs ok on the RT1050 EVB board. we compare the 32K clock between the RT1050 evb and our board, the 32k is ok.

Our board has not backup battery, the VCC_SNVS_IN has special LDO, the LDO is always on when the power supply on.

Re: rt1050 RTC cannot start.

jeremyzhou — Tue, 27 Jul 2021 02:42:02 GMT

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
According to your statement, I guess the phenomenon is related to the hardware, so I was wondering if you can share the schematic of your custom board.
Looking forward to your reply.
Have a great day,
TIC

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Re: rt1050 RTC cannot start.

Steve23 — Tue, 09 Aug 2022 13:48:06 GMT

Hi @meitifire

Just wondering whether you ever found a resolution to this please?

I am working on a project where we've seen the same fault and can't find a reason for it.

Thanks,

Steve

Re: rt1050 RTC cannot start.

cervenka — Wed, 10 Aug 2022 09:47:07 GMT

Hello, we have same issue on imx7ulp. When jtag is attached or when linux is in suspended state (sudo systemctl suspend) and then wdog reset action happen.

Re: rt1050 RTC cannot start.

Steve23 — Wed, 10 Aug 2022 10:10:36 GMT

Hi,

Yes we also only see the problem when connected with JTAG. I've raised a new question here: RT1062 SNVS_HP_RTC_StartTimer() call does not retu... - NXP Community because I don't think NXP monitor old threads.

Re: rt1050 RTC cannot start.

Jonny_T — Fri, 23 Sep 2022 13:45:48 GMT

yeh we are having the exact same issue on the imx7ulp evk as well, has a solution been found yet?