nrf-pinctrl.h

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/*
 * Copyright (c) 2021 Nordic Semiconductor ASA
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_NRF_PINCTRL_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_NRF_PINCTRL_H_
 
/*
 * The whole nRF pin configuration information is encoded in a 32-bit bitfield
 * organized as follows:
 *
 * - 31..16: Pin function.
 * - 15..13: Reserved.
 * - 12:     Pin low power mode.
 * - 11..8:  Pin output drive configuration.
 * - 7..6:   Pin pull configuration.
 * - 5..0:   Pin number (combination of port and pin).
 */
 
#define NRF_FUN_POS 16U
#define NRF_FUN_MSK 0xFFFFU
#define NRF_LP_POS 12U
#define NRF_LP_MSK 0x1U
#define NRF_DRIVE_POS 8U
#define NRF_DRIVE_MSK 0xFU
#define NRF_PULL_POS 6U
#define NRF_PULL_MSK 0x3U
#define NRF_PIN_POS 0U
#define NRF_PIN_MSK 0x3FU
 
#define NRF_FUN_UART_TX 0U
#define NRF_FUN_UART_RX 1U
#define NRF_FUN_UART_RTS 2U
#define NRF_FUN_UART_CTS 3U
 
#define NRF_DRIVE_S0S1 0U
#define NRF_DRIVE_H0S1 1U
#define NRF_DRIVE_S0H1 2U
#define NRF_DRIVE_H0H1 3U
#define NRF_DRIVE_D0S1 4U
#define NRF_DRIVE_D0H1 5U
#define NRF_DRIVE_S0D1 6U
#define NRF_DRIVE_H0D1 7U
#define NRF_DRIVE_E0E1 11U
 
#define NRF_PULL_NONE 0U
#define NRF_PULL_DOWN 1U
#define NRF_PULL_UP 3U
 
#define NRF_LP_DISABLE 0U
#define NRF_LP_ENABLE 1U
 
#define NRF_PSEL(fun, port, pin)                                                       \
        ((((((port) * 32U) + (pin)) & NRF_PIN_MSK) << NRF_PIN_POS) |           \
         ((NRF_FUN_ ## fun & NRF_FUN_MSK) << NRF_FUN_POS))
 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_NRF_PINCTRL_H_ */