Merge branch 'bugfix/esp32c3_light_sleep_gpio_reset_issue' into 'master'

light sleep: add software workaround for esp32c3 gpio reset issue

See merge request espressif/esp-idf!12715
This commit is contained in:
Jiang Jiang Jian
2021-03-29 04:55:55 +00:00
6 changed files with 44 additions and 18 deletions

View File

@@ -226,4 +226,23 @@ menu "ESP32C3-Specific"
If enabled, this disables the linking of binary libraries in the application build. Note
that after enabling this Wi-Fi/Bluetooth will not work.
config ESP32C3_LIGHTSLEEP_GPIO_RESET_WORKAROUND
bool "light sleep GPIO reset workaround"
default y
select PM_SLP_DISABLE_GPIO if FREERTOS_USE_TICKLESS_IDLE
help
ESP32C3 will reset at wake-up if GPIO is received a small electrostatic pulse during
light sleep, with specific condition
- GPIO needs to be configured as input-mode only
- The pin receives a small electrostatic pulse, and reset occurs when the pulse
voltage is higher than 6 V
For GPIO set to input mode only, it is not a good practice to leave it open/floating,
The hardware design needs to controlled it with determined supply or ground voltage
is necessary.
This option provides a software workaround for this issue. Configure to isolate all
GPIO pins in sleep state.
endmenu # ESP32C3-Specific