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https://github.com/zephyrproject-rtos/zephyr
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836651b453
Refactors all of the on-chip GPIO drivers to use a shared driver class initialization priority configuration, CONFIG_GPIO_INIT_PRIORITY, to allow configuring GPIO drivers separately from other devices. This is similar to other driver classes like I2C and SPI. Most drivers previously used CONFIG_KERNEL_INIT_PRIORITY_DEFAULT or CONFIG_KERNEL_INIT_PRIORITY_DEVICE, therefore the default for this new option is the lower of the two, which means earlier initialization. Driver-specific options for off-chip I2C- or SPI-based GPIO drivers are left intact because they often need to be initialized at a different priority than on-chip GPIO drivers. Signed-off-by: Maureen Helm <maureen.helm@intel.com>
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
# Copyright (c) 2018 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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menuconfig GPIO_NRFX
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bool "nRF GPIO driver"
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default y
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depends on SOC_FAMILY_NRF
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select NRFX_GPIOTE
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help
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Enable GPIO driver for nRF line of MCUs.
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if GPIO_NRFX
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choice
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prompt "nRF GPIO edge interrupts mechanism"
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default GPIO_NRF_INT_EDGE_USING_GPIOTE
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config GPIO_NRF_INT_EDGE_USING_GPIOTE
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bool "Edge interrupts using GPIOTE"
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help
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Enable GPIO edge interrupts implementation using GPIOTE events.
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config GPIO_NRF_INT_EDGE_USING_SENSE
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bool "Edge interrupts using SENSE"
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help
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Enable GPIO edge interrupts implementation using GPIO SENSE, which is
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a level interrupt mechanism. Conversion from level to edge interrupts
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notification happens in GPIO driver, so it is transparent to GPIO
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consumers after switching from GPIOTE mechanism.
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Use this option as an alternative to GPIOTE event mechanism. According
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to product specifications and erratas to some nRF MCUs, using GPIOTE
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results in increased current consumption in System ON Idle and in
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conjunction with SPI/TWI peripherals. Selecting this option allows to
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reduce current for those cases.
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Using this option additionally allows detecting state changes of pins
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configured as output, which might be handy for some applications.
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endchoice
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endif # GPIO_NRFX
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