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platform: nordic_nrf: Set UART pins using pinctrl method
Use the pinctrl method to define the UART pins for the nordic platform UART driver. This makes it easier to assign the UART pins from devicetree information which is used in out-of-tree board support. Change-Id: I8f18b730d705214670438b85c58032c6f32fff1c Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
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platform/ext/target/nordic_nrf/common/core/common/nrf-pinctrl.h
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| /* | ||
| * Copyright (c) 2021 Nordic Semiconductor ASA | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
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| #ifndef NRF_INCLUDE_NRF_PINCTRL_H | ||
| #define NRF_INCLUDE_NRF_PINCTRL_H | ||
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| /* | ||
| * The whole nRF pin configuration information is encoded in a 32-bit bitfield | ||
| * organized as follows: | ||
| * | ||
| * - 31..16: Pin function. | ||
| * - 15: Reserved. | ||
| * - 14: Pin inversion mode. | ||
| * - 13: Pin low power mode. | ||
| * - 12..9: Pin output drive configuration. | ||
| * - 8..7: Pin pull configuration. | ||
| * - 6..0: Pin number (combination of port and pin). | ||
| */ | ||
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| /** | ||
| * @name nRF pin configuration bit field positions and masks. | ||
| * @{ | ||
| */ | ||
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| /** Position of the function field. */ | ||
| #define NRF_FUN_POS 16U | ||
| /** Mask for the function field. */ | ||
| #define NRF_FUN_MSK 0xFFFFU | ||
| /** Position of the invert field. */ | ||
| #define NRF_INVERT_POS 14U | ||
| /** Mask for the invert field. */ | ||
| #define NRF_INVERT_MSK 0x1U | ||
| /** Position of the low power field. */ | ||
| #define NRF_LP_POS 13U | ||
| /** Mask for the low power field. */ | ||
| #define NRF_LP_MSK 0x1U | ||
| /** Position of the drive configuration field. */ | ||
| #define NRF_DRIVE_POS 9U | ||
| /** Mask for the drive configuration field. */ | ||
| #define NRF_DRIVE_MSK 0xFU | ||
| /** Position of the pull configuration field. */ | ||
| #define NRF_PULL_POS 7U | ||
| /** Mask for the pull configuration field. */ | ||
| #define NRF_PULL_MSK 0x3U | ||
| /** Position of the pin field. */ | ||
| #define NRF_PIN_POS 0U | ||
| /** Mask for the pin field. */ | ||
| #define NRF_PIN_MSK 0x7FU | ||
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| /** @} */ | ||
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| /** | ||
| * @name nRF pinctrl pin functions. | ||
| * @{ | ||
| */ | ||
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| /** UART TX */ | ||
| #define NRF_FUN_UART_TX 0U | ||
| /** UART RX */ | ||
| #define NRF_FUN_UART_RX 1U | ||
| /** UART RTS */ | ||
| #define NRF_FUN_UART_RTS 2U | ||
| /** UART CTS */ | ||
| #define NRF_FUN_UART_CTS 3U | ||
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| /** Indicates that a pin is disconnected */ | ||
| #define NRF_PIN_DISCONNECTED NRF_PIN_MSK | ||
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| /** @} */ | ||
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| /** | ||
| * @brief Utility macro to build nRF psels property entry. | ||
| * | ||
| * @param fun Pin function configuration (see NRF_FUNC_{name} macros). | ||
| * @param port Port (0 or 1). | ||
| * @param pin Pin (0..31). | ||
| */ | ||
| #define NRF_PSEL(fun, port, pin) \ | ||
| ((((((port) * 32U) + (pin)) & NRF_PIN_MSK) << NRF_PIN_POS) | \ | ||
| ((NRF_FUN_ ## fun & NRF_FUN_MSK) << NRF_FUN_POS)) | ||
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| /** | ||
| * @brief Utility macro to build nRF psels property entry when a pin is disconnected. | ||
| * | ||
| * This can be useful in situations where code running before Zephyr, e.g. a bootloader | ||
| * configures pins that later needs to be disconnected. | ||
| * | ||
| * @param fun Pin function configuration (see NRF_FUN_{name} macros). | ||
| */ | ||
| #define NRF_PSEL_DISCONNECTED(fun) \ | ||
| (NRF_PIN_DISCONNECTED | \ | ||
| ((NRF_FUN_ ## fun & NRF_FUN_MSK) << NRF_FUN_POS)) | ||
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| /** | ||
| * @brief Utility macro to obtain pin function. | ||
| * | ||
| * @param pincfg Pin configuration bit field. | ||
| */ | ||
| #define NRF_GET_FUN(pincfg) (((pincfg) >> NRF_FUN_POS) & NRF_FUN_MSK) | ||
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| /** | ||
| * @brief Utility macro to obtain port and pin combination. | ||
| * | ||
| * @param pincfg Pin configuration bit field. | ||
| */ | ||
| #define NRF_GET_PIN(pincfg) (((pincfg) >> NRF_PIN_POS) & NRF_PIN_MSK) | ||
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| #endif /* NRF_INCLUDE_NRF_PINCTRL_H */ |
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