126 lines
5.9 KiB
C
126 lines
5.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Glenn Ruben Bakke
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef HAL_UART_H__
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#define HAL_UART_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include "nrf.h"
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#if NRF51
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#define UART_HWCONTROL_NONE ((uint32_t)UART_CONFIG_HWFC_Disabled << UART_CONFIG_HWFC_Pos)
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#define UART_HWCONTROL_RTS_CTS ((uint32_t)(UART_CONFIG_HWFC_Enabled << UART_CONFIG_HWFC_Pos)
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#define IS_UART_HARDWARE_FLOW_CONTROL(CONTROL)\
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(((CONTROL) == UART_HWCONTROL_NONE) || \
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((CONTROL) == UART_HWCONTROL_RTS_CTS))
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#define UART_BASE_POINTERS (const uint32_t[]){NRF_UART0_BASE}
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#define UART_IRQ_VALUES (const uint32_t[]){UART0_IRQn}
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#elif NRF52
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#define UART_HWCONTROL_NONE ((uint32_t)UARTE_CONFIG_HWFC_Disabled << UARTE_CONFIG_HWFC_Pos)
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#define UART_HWCONTROL_RTS_CTS ((uint32_t)(UARTE_CONFIG_HWFC_Enabled << UARTE_CONFIG_HWFC_Pos)
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#define IS_UART_HARDWARE_FLOW_CONTROL(CONTROL)\
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(((CONTROL) == UART_HWCONTROL_NONE) || \
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((CONTROL) == UART_HWCONTROL_RTS_CTS))
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#ifdef HAL_UART_MODULE_ENABLED
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#define UART_BASE_POINTERS (const uint32_t[]){NRF_UART0_BASE}
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#define UART_IRQ_VALUES (const uint32_t[]){UARTE0_UART0_IRQn}
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#else // HAL_UARTE_MODULE_ENABLED
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#ifdef NRF52832_XXAA
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#define UART_BASE_POINTERS (const uint32_t[]){NRF_UARTE0_BASE}
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#define UART_IRQ_VALUES (const uint32_t[]){UARTE0_UART0_IRQn}
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#elif NRF52840_XXAA
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#define UART_BASE_POINTERS (const uint32_t[]){NRF_UARTE0_BASE, \
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NRF_UARTE1_BASE}
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#define UART_IRQ_VALUES (const uint32_t[]){UARTE0_UART0_IRQn, \
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UARTE1_IRQn}
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#endif // HAL_UARTE_MODULE_ENABLED
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#endif
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#else
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#error "Device not supported."
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#endif
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#define UART_BASE(x) ((NRF_UART_Type *)UART_BASE_POINTERS[x])
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#define UART_IRQ_NUM(x) (UART_IRQ_VALUES[x])
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typedef enum
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{
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HAL_UART_ERROR_NONE = 0x00, /*!< No error */
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HAL_UART_ERROR_ORE = 0x01, /*!< Overrun error. A start bit is received while the previous data still lies in RXD. (Previous data is lost.) */
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HAL_UART_ERROR_PE = 0x02, /*!< Parity error. A character with bad parity is received, if HW parity check is enabled. */
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HAL_UART_ERROR_FE = 0x04, /*!< Frame error. A valid stop bit is not detected on the serial data input after all bits in a character have been received. */
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HAL_UART_ERROR_BE = 0x08, /*!< Break error. The serial data input is '0' for longer than the length of a data frame. (The data frame length is 10 bits without parity bit, and 11 bits with parity bit.). */
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} hal_uart_error_t;
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typedef enum {
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HAL_UART_BAUD_1K2 = 0, /**< 1200 baud */
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HAL_UART_BAUD_2K4, /**< 2400 baud */
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HAL_UART_BAUD_4K8, /**< 4800 baud */
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HAL_UART_BAUD_9K6, /**< 9600 baud */
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HAL_UART_BAUD_14K4, /**< 14.4 kbaud */
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HAL_UART_BAUD_19K2, /**< 19.2 kbaud */
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HAL_UART_BAUD_28K8, /**< 28.8 kbaud */
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HAL_UART_BAUD_38K4, /**< 38.4 kbaud */
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HAL_UART_BAUD_57K6, /**< 57.6 kbaud */
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HAL_UART_BAUD_76K8, /**< 76.8 kbaud */
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HAL_UART_BAUD_115K2, /**< 115.2 kbaud */
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HAL_UART_BAUD_230K4, /**< 230.4 kbaud */
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HAL_UART_BAUD_250K0, /**< 250.0 kbaud */
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HAL_UART_BAUD_500K0, /**< 500.0 kbaud */
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HAL_UART_BAUD_1M0 /**< 1 mbaud */
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} hal_uart_baudrate_t;
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typedef struct {
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uint8_t id; /* UART instance id */
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const pin_obj_t * rx_pin; /* RX pin. */
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const pin_obj_t * tx_pin; /* TX pin. */
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const pin_obj_t * rts_pin; /* RTS pin, only used if flow control is enabled. */
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const pin_obj_t * cts_pin; /* CTS pin, only used if flow control is enabled. */
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bool flow_control; /* Flow control setting, if flow control is used, the system will use low power UART mode, based on CTS signal. */
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bool use_parity; /* Even parity if TRUE, no parity if FALSE. */
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uint32_t baud_rate; /* Baud rate configuration. */
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uint32_t irq_priority; /* UARTE IRQ priority. */
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uint32_t irq_num;
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} hal_uart_init_t;
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typedef struct
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{
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NRF_UART_Type * p_instance; /* UART registers base address */
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hal_uart_init_t init; /* UART communication parameters */
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} UART_HandleTypeDef;
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typedef void (*uart_complete_cb)(void);
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void hal_uart_init(NRF_UART_Type * p_instance, hal_uart_init_t const * p_uart_init);
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hal_uart_error_t hal_uart_char_write(NRF_UART_Type * p_instance, uint8_t ch);
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hal_uart_error_t hal_uart_char_read(NRF_UART_Type * p_instance, uint8_t * ch);
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#endif // HAL_UART_H__
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