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esp_hw_support/sleep: fix cannot lightsleep again after a wakeup from ULP

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Since ulp wakeup signal are connected to ulp int raw(except esp32), we
need to clear ulp int raw before sleep when ulp wakeup enabled. Otherwise,
if the ulp int raw is already set, chip will not sleep properly.

Closes https://github.com/espressif/esp-idf/issues/6229
This commit is contained in:
jingli
2022-05-23 01:00:19 +08:00
parent b6b7a59958
commit 57975000fe
1 changed files with 3 additions and 1 deletions
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4
components/esp32s2/sleep_modes.c
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@@ -198,7 +198,9 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
}
// Enable ULP wakeup
if (s_config.wakeup_triggers & RTC_ULP_TRIG_EN) {
// no-op for esp32s2
REG_SET_BIT(RTC_CNTL_INT_CLR_REG, RTC_CNTL_ULP_CP_INT_CLR);
REG_SET_BIT(RTC_CNTL_INT_CLR_REG, RTC_CNTL_COCPU_INT_CLR);
REG_SET_BIT(RTC_CNTL_INT_CLR_REG, RTC_CNTL_COCPU_TRAP_INT_CLR);
}
extern void regi2c_analog_cali_reg_read(void);