472 lines
16 KiB
C
472 lines
16 KiB
C
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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*
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* The information contained herein is property of Nordic Semiconductor ASA.
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* Terms and conditions of usage are described in detail in NORDIC
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* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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*
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* Licensees are granted free, non-transferable use of the information. NO
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* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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* the file.
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*
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*/
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#ifndef NRF_UART_H__
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#define NRF_UART_H__
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#include "nrf.h"
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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/**
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* @defgroup nrf_uart_hal UART HAL
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* @{
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* @ingroup nrf_uart
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*
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* @brief Hardware access layer for accessing the UART peripheral.
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*/
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#define NRF_UART_PSEL_DISCONNECTED 0xFFFFFFFF
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/**
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* @enum nrf_uart_task_t
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* @brief UART tasks.
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*/
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typedef enum
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{
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/*lint -save -e30 -esym(628,__INTADDR__)*/
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NRF_UART_TASK_STARTRX = offsetof(NRF_UART_Type, TASKS_STARTRX), /**< Task for starting reception. */
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NRF_UART_TASK_STOPRX = offsetof(NRF_UART_Type, TASKS_STOPRX), /**< Task for stopping reception. */
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NRF_UART_TASK_STARTTX = offsetof(NRF_UART_Type, TASKS_STARTTX), /**< Task for starting transmission. */
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NRF_UART_TASK_STOPTX = offsetof(NRF_UART_Type, TASKS_STOPTX), /**< Task for stopping transmission. */
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NRF_UART_TASK_SUSPEND = offsetof(NRF_UART_Type, TASKS_SUSPEND), /**< Task for suspending UART. */
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/*lint -restore*/
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} nrf_uart_task_t;
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/**
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* @enum nrf_uart_event_t
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* @brief UART events.
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*/
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typedef enum
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{
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/*lint -save -e30*/
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NRF_UART_EVENT_CTS = offsetof(NRF_UART_Type, EVENTS_CTS), /**< Event from CTS line activation. */
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NRF_UART_EVENT_NCTS = offsetof(NRF_UART_Type, EVENTS_NCTS), /**< Event from CTS line deactivation. */
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NRF_UART_EVENT_RXDRDY = offsetof(NRF_UART_Type, EVENTS_RXDRDY),/**< Event from data ready in RXD. */
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NRF_UART_EVENT_TXDRDY = offsetof(NRF_UART_Type, EVENTS_TXDRDY),/**< Event from data sent from TXD. */
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NRF_UART_EVENT_ERROR = offsetof(NRF_UART_Type, EVENTS_ERROR), /**< Event from error detection. */
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NRF_UART_EVENT_RXTO = offsetof(NRF_UART_Type, EVENTS_RXTO) /**< Event from receiver timeout. */
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/*lint -restore*/
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} nrf_uart_event_t;
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/**
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* @enum nrf_uart_int_mask_t
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* @brief UART interrupts.
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*/
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typedef enum
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{
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/*lint -save -e30*/
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NRF_UART_INT_MASK_CTS = UART_INTENCLR_CTS_Msk, /**< CTS line activation interrupt. */
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NRF_UART_INT_MASK_NCTS = UART_INTENCLR_NCTS_Msk, /**< CTS line deactivation interrupt. */
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NRF_UART_INT_MASK_RXDRDY = UART_INTENCLR_RXDRDY_Msk, /**< Data ready in RXD interrupt. */
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NRF_UART_INT_MASK_TXDRDY = UART_INTENCLR_TXDRDY_Msk, /**< Data sent from TXD interrupt. */
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NRF_UART_INT_MASK_ERROR = UART_INTENCLR_ERROR_Msk, /**< Error detection interrupt. */
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NRF_UART_INT_MASK_RXTO = UART_INTENCLR_RXTO_Msk /**< Receiver timeout interrupt. */
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/*lint -restore*/
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} nrf_uart_int_mask_t;
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/**
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* @enum nrf_uart_baudrate_t
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* @brief Baudrates supported by UART.
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*/
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typedef enum
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{
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#ifdef NRF52
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NRF_UART_BAUDRATE_1200 = UARTE_BAUDRATE_BAUDRATE_Baud1200, /**< 1200 baud. */
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NRF_UART_BAUDRATE_2400 = UARTE_BAUDRATE_BAUDRATE_Baud2400, /**< 2400 baud. */
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NRF_UART_BAUDRATE_4800 = UARTE_BAUDRATE_BAUDRATE_Baud4800, /**< 4800 baud. */
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NRF_UART_BAUDRATE_9600 = UARTE_BAUDRATE_BAUDRATE_Baud9600, /**< 9600 baud. */
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NRF_UART_BAUDRATE_14400 = UARTE_BAUDRATE_BAUDRATE_Baud14400, /**< 14400 baud. */
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NRF_UART_BAUDRATE_19200 = UARTE_BAUDRATE_BAUDRATE_Baud19200, /**< 19200 baud. */
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NRF_UART_BAUDRATE_28800 = UARTE_BAUDRATE_BAUDRATE_Baud28800, /**< 28800 baud. */
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NRF_UART_BAUDRATE_38400 = UARTE_BAUDRATE_BAUDRATE_Baud38400, /**< 38400 baud. */
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NRF_UART_BAUDRATE_57600 = UARTE_BAUDRATE_BAUDRATE_Baud57600, /**< 57600 baud. */
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NRF_UART_BAUDRATE_76800 = UARTE_BAUDRATE_BAUDRATE_Baud76800, /**< 76800 baud. */
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NRF_UART_BAUDRATE_115200 = UARTE_BAUDRATE_BAUDRATE_Baud115200, /**< 115200 baud. */
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NRF_UART_BAUDRATE_230400 = UARTE_BAUDRATE_BAUDRATE_Baud230400, /**< 230400 baud. */
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NRF_UART_BAUDRATE_250000 = UARTE_BAUDRATE_BAUDRATE_Baud250000, /**< 250000 baud. */
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NRF_UART_BAUDRATE_460800 = UARTE_BAUDRATE_BAUDRATE_Baud460800, /**< 460800 baud. */
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NRF_UART_BAUDRATE_921600 = UARTE_BAUDRATE_BAUDRATE_Baud921600, /**< 921600 baud. */
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NRF_UART_BAUDRATE_1000000 = UARTE_BAUDRATE_BAUDRATE_Baud1M, /**< 1000000 baud. */
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#else
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NRF_UART_BAUDRATE_1200 = UART_BAUDRATE_BAUDRATE_Baud1200, /**< 1200 baud. */
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NRF_UART_BAUDRATE_2400 = UART_BAUDRATE_BAUDRATE_Baud2400, /**< 2400 baud. */
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NRF_UART_BAUDRATE_4800 = UART_BAUDRATE_BAUDRATE_Baud4800, /**< 4800 baud. */
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NRF_UART_BAUDRATE_9600 = UART_BAUDRATE_BAUDRATE_Baud9600, /**< 9600 baud. */
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NRF_UART_BAUDRATE_14400 = UART_BAUDRATE_BAUDRATE_Baud14400, /**< 14400 baud. */
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NRF_UART_BAUDRATE_19200 = UART_BAUDRATE_BAUDRATE_Baud19200, /**< 19200 baud. */
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NRF_UART_BAUDRATE_28800 = UART_BAUDRATE_BAUDRATE_Baud28800, /**< 28800 baud. */
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NRF_UART_BAUDRATE_38400 = UART_BAUDRATE_BAUDRATE_Baud38400, /**< 38400 baud. */
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NRF_UART_BAUDRATE_57600 = UART_BAUDRATE_BAUDRATE_Baud57600, /**< 57600 baud. */
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NRF_UART_BAUDRATE_76800 = UART_BAUDRATE_BAUDRATE_Baud76800, /**< 76800 baud. */
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NRF_UART_BAUDRATE_115200 = UART_BAUDRATE_BAUDRATE_Baud115200, /**< 115200 baud. */
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NRF_UART_BAUDRATE_230400 = UART_BAUDRATE_BAUDRATE_Baud230400, /**< 230400 baud. */
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NRF_UART_BAUDRATE_250000 = UART_BAUDRATE_BAUDRATE_Baud250000, /**< 250000 baud. */
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NRF_UART_BAUDRATE_460800 = UART_BAUDRATE_BAUDRATE_Baud460800, /**< 460800 baud. */
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NRF_UART_BAUDRATE_921600 = UART_BAUDRATE_BAUDRATE_Baud921600, /**< 921600 baud. */
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NRF_UART_BAUDRATE_1000000 = UART_BAUDRATE_BAUDRATE_Baud1M, /**< 1000000 baud. */
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#endif
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} nrf_uart_baudrate_t;
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/**
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* @enum nrf_uart_error_mask_t
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* @brief Types of UART error masks.
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*/
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typedef enum
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{
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NRF_UART_ERROR_OVERRUN_MASK = UART_ERRORSRC_OVERRUN_Msk, /**< Overrun error. */
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NRF_UART_ERROR_PARITY_MASK = UART_ERRORSRC_PARITY_Msk, /**< Parity error. */
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NRF_UART_ERROR_FRAMING_MASK = UART_ERRORSRC_FRAMING_Msk, /**< Framing error. */
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NRF_UART_ERROR_BREAK_MASK = UART_ERRORSRC_BREAK_Msk, /**< Break error. */
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} nrf_uart_error_mask_t;
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/**
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* @enum nrf_uart_parity_t
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* @brief Types of UART parity modes.
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*/
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typedef enum
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{
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NRF_UART_PARITY_EXCLUDED = UART_CONFIG_PARITY_Excluded << UART_CONFIG_PARITY_Pos, /**< Parity excluded. */
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NRF_UART_PARITY_INCLUDED = UART_CONFIG_PARITY_Included << UART_CONFIG_PARITY_Pos, /**< Parity included. */
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} nrf_uart_parity_t;
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/**
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* @enum nrf_uart_hwfc_t
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* @brief Types of UART flow control modes.
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*/
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typedef enum
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{
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NRF_UART_HWFC_DISABLED = UART_CONFIG_HWFC_Disabled, /**< HW flow control disabled. */
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NRF_UART_HWFC_ENABLED = UART_CONFIG_HWFC_Enabled, /**< HW flow control enabled. */
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} nrf_uart_hwfc_t;
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/**
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* @brief Function for clearing a specific UART event.
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*
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* @param[in] p_reg UART instance.
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* @param[in] event Event to clear.
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*/
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__STATIC_INLINE void nrf_uart_event_clear(NRF_UART_Type * p_reg, nrf_uart_event_t event);
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/**
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* @brief Function for checking the state of a specific UART event.
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*
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* @param[in] p_reg UART instance.
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* @param[in] event Event to check.
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*
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* @retval True if event is set, False otherwise.
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*/
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__STATIC_INLINE bool nrf_uart_event_check(NRF_UART_Type * p_reg, nrf_uart_event_t event);
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/**
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* @brief Function for returning the address of a specific UART event register.
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*
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* @param[in] p_reg UART instance.
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* @param[in] event Desired event.
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*
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* @retval Address of specified event register.
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*/
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__STATIC_INLINE uint32_t nrf_uart_event_address_get(NRF_UART_Type * p_reg,
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nrf_uart_event_t event);
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/**
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* @brief Function for enabling a specific interrupt.
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*
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* @param p_reg Instance.
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* @param int_mask Interrupts to enable.
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*/
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__STATIC_INLINE void nrf_uart_int_enable(NRF_UART_Type * p_reg, uint32_t int_mask);
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/**
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* @brief Function for retrieving the state of a given interrupt.
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*
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* @param p_reg Instance.
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* @param int_mask Mask of interrupt to check.
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*
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* @retval true If the interrupt is enabled.
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* @retval false If the interrupt is not enabled.
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*/
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__STATIC_INLINE bool nrf_uart_int_enable_check(NRF_UART_Type * p_reg, uint32_t int_mask);
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/**
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* @brief Function for disabling specific interrupts.
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*
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* @param p_reg Instance.
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* @param int_mask Interrupts to disable.
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*/
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__STATIC_INLINE void nrf_uart_int_disable(NRF_UART_Type * p_reg, uint32_t int_mask);
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/**
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* @brief Function for getting error source mask. Function is clearing error source flags after reading.
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*
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* @param p_reg Instance.
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* @return Mask with error source flags.
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*/
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__STATIC_INLINE uint32_t nrf_uart_errorsrc_get_and_clear(NRF_UART_Type * p_reg);
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/**
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* @brief Function for enabling UART.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE void nrf_uart_enable(NRF_UART_Type * p_reg);
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/**
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* @brief Function for disabling UART.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE void nrf_uart_disable(NRF_UART_Type * p_reg);
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/**
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* @brief Function for configuring TX/RX pins.
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*
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* @param p_reg Instance.
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* @param pseltxd TXD pin number.
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* @param pselrxd RXD pin number.
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*/
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__STATIC_INLINE void nrf_uart_txrx_pins_set(NRF_UART_Type * p_reg, uint32_t pseltxd, uint32_t pselrxd);
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/**
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* @brief Function for disconnecting TX/RX pins.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE void nrf_uart_txrx_pins_disconnect(NRF_UART_Type * p_reg);
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/**
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* @brief Function for getting TX pin.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE uint32_t nrf_uart_tx_pin_get(NRF_UART_Type * p_reg);
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/**
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* @brief Function for getting RX pin.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE uint32_t nrf_uart_rx_pin_get(NRF_UART_Type * p_reg);
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/**
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* @brief Function for getting RTS pin.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE uint32_t nrf_uart_rts_pin_get(NRF_UART_Type * p_reg);
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/**
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* @brief Function for getting CTS pin.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE uint32_t nrf_uart_cts_pin_get(NRF_UART_Type * p_reg);
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/**
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* @brief Function for configuring flow control pins.
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*
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* @param p_reg Instance.
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* @param pselrts RTS pin number.
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* @param pselcts CTS pin number.
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*/
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__STATIC_INLINE void nrf_uart_hwfc_pins_set(NRF_UART_Type * p_reg,
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uint32_t pselrts,
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uint32_t pselcts);
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/**
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* @brief Function for disconnecting flow control pins.
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*
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* @param p_reg Instance.
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*/
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__STATIC_INLINE void nrf_uart_hwfc_pins_disconnect(NRF_UART_Type * p_reg);
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/**
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* @brief Function for reading RX data.
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*
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* @param p_reg Instance.
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* @return Received byte.
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*/
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__STATIC_INLINE uint8_t nrf_uart_rxd_get(NRF_UART_Type * p_reg);
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/**
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* @brief Function for setting Tx data.
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*
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* @param p_reg Instance.
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* @param txd Byte.
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*/
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__STATIC_INLINE void nrf_uart_txd_set(NRF_UART_Type * p_reg, uint8_t txd);
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/**
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* @brief Function for starting an UART task.
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*
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* @param p_reg Instance.
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* @param task Task.
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*/
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__STATIC_INLINE void nrf_uart_task_trigger(NRF_UART_Type * p_reg, nrf_uart_task_t task);
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/**
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* @brief Function for returning the address of a specific task register.
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*
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* @param p_reg Instance.
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* @param task Task.
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*
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* @return Task address.
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*/
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__STATIC_INLINE uint32_t nrf_uart_task_address_get(NRF_UART_Type * p_reg, nrf_uart_task_t task);
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/**
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* @brief Function for configuring UART.
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*
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* @param p_reg Instance.
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* @param hwfc Hardware flow control. Enabled if true.
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* @param parity Parity. Included if true.
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*/
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__STATIC_INLINE void nrf_uart_configure(NRF_UART_Type * p_reg,
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nrf_uart_parity_t parity,
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nrf_uart_hwfc_t hwfc);
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/**
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* @brief Function for setting UART baudrate.
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*
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* @param p_reg Instance.
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* @param baudrate Baudrate.
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*/
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__STATIC_INLINE void nrf_uart_baudrate_set(NRF_UART_Type * p_reg, nrf_uart_baudrate_t baudrate);
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#ifndef SUPPRESS_INLINE_IMPLEMENTATION
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__STATIC_INLINE void nrf_uart_event_clear(NRF_UART_Type * p_reg, nrf_uart_event_t event)
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{
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*((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event)) = 0x0UL;
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}
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__STATIC_INLINE bool nrf_uart_event_check(NRF_UART_Type * p_reg, nrf_uart_event_t event)
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{
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return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event);
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|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_event_address_get(NRF_UART_Type * p_reg,
|
||
|
nrf_uart_event_t event)
|
||
|
{
|
||
|
return (uint32_t)((uint8_t *)p_reg + (uint32_t)event);
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_int_enable(NRF_UART_Type * p_reg, uint32_t int_mask)
|
||
|
{
|
||
|
p_reg->INTENSET = int_mask;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE bool nrf_uart_int_enable_check(NRF_UART_Type * p_reg, uint32_t int_mask)
|
||
|
{
|
||
|
return (bool)(p_reg->INTENSET & int_mask);
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_int_disable(NRF_UART_Type * p_reg, uint32_t int_mask)
|
||
|
{
|
||
|
p_reg->INTENCLR = int_mask;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_errorsrc_get_and_clear(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
uint32_t errsrc_mask = p_reg->ERRORSRC;
|
||
|
p_reg->ERRORSRC = errsrc_mask;
|
||
|
return errsrc_mask;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_enable(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
p_reg->ENABLE = UART_ENABLE_ENABLE_Enabled;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_disable(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
p_reg->ENABLE = UART_ENABLE_ENABLE_Disabled;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_txrx_pins_set(NRF_UART_Type * p_reg, uint32_t pseltxd, uint32_t pselrxd)
|
||
|
{
|
||
|
p_reg->PSELTXD = pseltxd;
|
||
|
p_reg->PSELRXD = pselrxd;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_txrx_pins_disconnect(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
nrf_uart_txrx_pins_set(p_reg, NRF_UART_PSEL_DISCONNECTED, NRF_UART_PSEL_DISCONNECTED);
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_tx_pin_get(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
return p_reg->PSELTXD;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_rx_pin_get(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
return p_reg->PSELRXD;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_rts_pin_get(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
return p_reg->PSELRTS;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_cts_pin_get(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
return p_reg->PSELCTS;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_hwfc_pins_set(NRF_UART_Type * p_reg, uint32_t pselrts, uint32_t pselcts)
|
||
|
{
|
||
|
p_reg->PSELRTS = pselrts;
|
||
|
p_reg->PSELCTS = pselcts;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_hwfc_pins_disconnect(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
nrf_uart_hwfc_pins_set(p_reg, NRF_UART_PSEL_DISCONNECTED, NRF_UART_PSEL_DISCONNECTED);
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint8_t nrf_uart_rxd_get(NRF_UART_Type * p_reg)
|
||
|
{
|
||
|
return p_reg->RXD;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_txd_set(NRF_UART_Type * p_reg, uint8_t txd)
|
||
|
{
|
||
|
p_reg->TXD = txd;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_task_trigger(NRF_UART_Type * p_reg, nrf_uart_task_t task)
|
||
|
{
|
||
|
*((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)task)) = 0x1UL;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE uint32_t nrf_uart_task_address_get(NRF_UART_Type * p_reg, nrf_uart_task_t task)
|
||
|
{
|
||
|
return (uint32_t)p_reg + (uint32_t)task;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_configure(NRF_UART_Type * p_reg,
|
||
|
nrf_uart_parity_t parity,
|
||
|
nrf_uart_hwfc_t hwfc)
|
||
|
{
|
||
|
p_reg->CONFIG = (uint32_t)parity | (uint32_t)hwfc;
|
||
|
}
|
||
|
|
||
|
__STATIC_INLINE void nrf_uart_baudrate_set(NRF_UART_Type * p_reg, nrf_uart_baudrate_t baudrate)
|
||
|
{
|
||
|
p_reg->BAUDRATE = baudrate;
|
||
|
}
|
||
|
#endif //SUPPRESS_INLINE_IMPLEMENTATION
|
||
|
/** @} */
|
||
|
#endif //NRF_UART_H__
|