S32KのトピックRe: The range of RTC compensation value S32K148

The range of RTC compensation value S32K148

SONGTAOSI — Wed, 01 Mar 2023 06:04:29 GMT

Hi,

According to the reference manual, the range of the time compensation value is-127~128.However, When i configuring 128 to the time compensation value, the following error occurs，it out of range.

Can you give me some suggestions? the reference manual is not right?

Re: The range of RTC compensation value S32K148

Senlent — Wed, 01 Mar 2023 08:09:39 GMT

Hi@SONGTAOSI

The content in the data sheet is not wrong, and the setting range here is -128~127, and there is nothing wrong with it. The reason for the difference is that the 8-bit binary highest bit is signed.

Re: The range of RTC compensation value S32K148

SONGTAOSI — Wed, 01 Mar 2023 11:43:12 GMT

Hi,

thank you Senlent.

what should this range be when I set it in the project?

const rtc_init_config_t rtcTimerInitCfg0 = {
.updateEnable = false,
.nonSupervisorAccessEnable = true,
.compensationInterval = 0U,
.compensation = 127, // What would be the range here? -128~127？
.clockSelect = RTC_CLK_SRC_LPO_1KHZ,
.clockOutConfig = RTC_CLKOUT_SRC_TSIC
};

Thank you again.