bootloader_common_check_long_hold_gpio() function

Check if a GPIO input is held low for a long period, short period, or not at all. This function will configure the specified GPIO as an input with internal pull-up enabled. If the GPIO input is held low continuously for delay_sec period then it is a long hold. If the GPIO input is held low for less period then it is a short hold.

Syntax

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Summary

Declaration

Definition

from bootloader_common.h:77

esp_comm_gpio_hold_t bootloader_common_check_long_hold_gpio(uint32_t num_pin, uint32_t delay_sec);

Implemented in bootloader_common.c:32

Arguments

Argument

Description

num_pin

Number of the GPIO input.

delay_sec

Input must be driven low for at least this long, continuously.

Return value

esp_comm_gpio_hold_t Type of low level hold detected, if any.

References

Code

Location

esp_comm_gpio_hold_t bootloader_common_check_long_hold_gpio(uint32_t num_pin, uint32_t delay_sec)

bootloader_common.c:32

esp_comm_gpio_hold_t bootloader_common_check_long_hold_gpio(uint32_t num_pin, uint32_t delay_sec);

bootloader_common.h:77

Call Tree

bootloader_common_check_long_hold_gpio() calls 1 function:

bootloader_common_check_long_hold_gpio()

bootloader_common_check_long_hold_gpio_level()

Data Use

bootloader_common_check_long_hold_gpio():

bootloader_common_check_long_hold_gpio()

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