21 lines
918 B
Plaintext
21 lines
918 B
Plaintext
# Copyright (c) 2021, Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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config DISPLAY_NRF_LED_MATRIX
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bool "LED matrix driven by GPIOs"
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default y
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depends on DT_HAS_NORDIC_NRF_LED_MATRIX_ENABLED
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select NRFX_GPIOTE
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select NRFX_PPI if HAS_HW_NRF_PPI
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help
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Enable driver for a LED matrix with rows and columns driven by
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GPIOs. The driver allows setting one of 256 levels of brightness
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(where 0 means off completely) for each of the LEDs independently.
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Assignment of GPIOs to rows and columns and the mapping of those
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to pixels are specified in properties of a "nordic,nrf-led-matrix"
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compatible node in devicetree.
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The driver uses one TIMER instance and, depending on what is set in
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devicetree, one PWM instance or one or more GPIOTE and PPI channels
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(the latter value depends on the chosen pixel group size - the number
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of LEDs in one row that can be lit simultaneously).
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