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teensy4/startup: Put default time into a const variable #794

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teensy4/startup: Put default time into a const variable #794

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7 changes: 4 additions & 3 deletions teensy4/startup.c
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Original file line number Diff line number Diff line change
Expand Up @@ -231,10 +231,11 @@ static void ResetHandler2(void)
PIT_TCTRL3 = 0;

// initialize RTC
const uint32_t default_time = UINT32_C(1546300800); // January 1, 2019 12:00:00 AM UTC
if (!(SNVS_LPCR & SNVS_LPCR_SRTC_ENV)) {
// if SRTC isn't running, start it with default Jan 1, 2019
SNVS_LPSRTCLR = 1546300800u << 15;
SNVS_LPSRTCMR = 1546300800u >> 17;
// if SRTC isn't running, start it with the default time
SNVS_LPSRTCLR = default_time << 15;
SNVS_LPSRTCMR = default_time >> 17;
SNVS_LPCR |= SNVS_LPCR_SRTC_ENV;
}
SNVS_HPCR |= SNVS_HPCR_RTC_EN | SNVS_HPCR_HP_TS;
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