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sleep: keep RTC_SLOW_MEM powered on if RTC_NOINIT is used

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Fixes a bug that if application uses RTC_NOINIT variables but doesn’t
use RTC_DATA variables, then RTC_NOINIT variables loose their values
after deep sleep.

Reported in https://esp32.com/viewtopic.php?f=2&t=7045&p=30301#p30299
This commit is contained in:
Ivan Grokhotkov 2018-09-06 18:31:17 +08:00
parent d6547595d7
commit b7fde00aed
1 changed files with 7 additions and 3 deletions
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8
components/esp32/sleep_modes.c
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@ -607,10 +607,14 @@ static uint32_t get_power_down_flags()
// RTC_SLOW_MEM is Auto, keep it powered up as well.
// These labels are defined in the linker script:
extern int _rtc_data_start, _rtc_data_end, _rtc_bss_start, _rtc_bss_end;
extern int _rtc_data_start, _rtc_data_end,
_rtc_bss_start, _rtc_bss_end,
_rtc_noinit_start, _rtc_noinit_end;
if ((s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM] == ESP_PD_OPTION_AUTO) &&
(&_rtc_data_end > &_rtc_data_start || &_rtc_bss_end > &_rtc_bss_start ||
(&_rtc_data_end > &_rtc_data_start ||
&_rtc_bss_end > &_rtc_bss_start ||
&_rtc_noinit_end > &_rtc_noinit_start ||
(s_config.wakeup_triggers & RTC_ULP_TRIG_EN))) {
s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM] = ESP_PD_OPTION_ON;
}