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feat(pm): add internal pull-up/downs option for gpio used for deepsleep wakeup

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This commit is contained in:
Lou Tianhao
2023-09-19 11:16:20 +08:00
parent c57d30e1df
commit fa12d24f1c
3 changed files with 16 additions and 3 deletions
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7
components/esp_hw_support/Kconfig
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@ -91,6 +91,13 @@ menu "Hardware Settings"
To reduce leakage current, some types of SPI Flash/RAM only need to pull up the CS pin
during light sleep. But there are also some kinds of SPI Flash/RAM that need to pull up
all pins. It depends on the SPI Flash/RAM chip used.
config ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS
bool "Allow to enable internal pull-up/downs for the Deep-Sleep wakeup IOs"
default y
help
When using rtc gpio wakeup source during deepsleep without external pull-up/downs, you may want to
make use of the internal ones.
endmenu
menu "ESP_SLEEP_WORKAROUND"

10
components/esp_hw_support/include/esp_sleep.h
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@ -245,9 +245,13 @@ esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t mask, esp_sleep_ext1_wakeup_mode
* @note This function does not modify pin configuration. The pins are
* configured inside esp_deep_sleep_start, immediately before entering sleep mode.
*
* @note You don't need to care to pull-up or pull-down before using this
* function, because this will be set internally in esp_deep_sleep_start
* based on the wakeup mode. BTW, when you use low level to wake up the
* @note You don't need to worry about pull-up or pull-down resistors before
* using this function because the ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS
* option is enabled by default. It will automatically set pull-up or pull-down
* resistors internally in esp_deep_sleep_start based on the wakeup mode. However,
* when using external pull-up or pull-down resistors, please be sure to disable
* the ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS option, as the combination of internal
* and external resistors may cause interference. BTW, when you use low level to wake up the
* chip, we strongly recommend you to add external resistors (pull-up).
*
* @param gpio_pin_mask Bit mask of GPIO numbers which will cause wakeup. Only GPIOs

2
components/esp_hw_support/sleep_modes.c
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@ -1165,6 +1165,7 @@ static void gpio_deep_sleep_wakeup_prepare(void)
if (((1ULL << gpio_idx) & s_config.gpio_wakeup_mask) == 0) {
continue;
}
#if CONFIG_ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS
if (s_config.gpio_trigger_mode & BIT(gpio_idx)) {
ESP_ERROR_CHECK(gpio_pullup_dis(gpio_idx));
ESP_ERROR_CHECK(gpio_pulldown_en(gpio_idx));
@ -1172,6 +1173,7 @@ static void gpio_deep_sleep_wakeup_prepare(void)
ESP_ERROR_CHECK(gpio_pullup_en(gpio_idx));
ESP_ERROR_CHECK(gpio_pulldown_dis(gpio_idx));
}
#endif
ESP_ERROR_CHECK(gpio_hold_en(gpio_idx));
}
// Clear state from previous wakeup