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https://github.com/jialexd/sdk-ameba-v4.0c_180328.git
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224 lines
6 KiB
C
Executable file
224 lines
6 KiB
C
Executable file
/** mbed Microcontroller Library
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******************************************************************************
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* @file serial_api.h
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* @author
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* @version V1.0.0
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* @brief This file provides mbed API for UART.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************
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*/
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#ifndef MBED_SERIAL_API_H
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#define MBED_SERIAL_API_H
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#include "device.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @addtogroup uart UART
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* @ingroup hal
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* @brief uart functions
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* @{
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*/
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///@name Ameba Common
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///@{
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/**
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* @brief UART Parity mode
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* used by serial_format
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*/
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typedef enum {
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ParityNone = 0, /*!<parity disable */
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ParityOdd = 1, /*!<odd parity enable */
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ParityEven = 2, /*!<even paroty enable */
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ParityForced1 = 3, /*!<same action with ParityOdd */
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ParityForced0 = 4 /*!<same action with ParityEven */
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} SerialParity;
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/**
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* @brief UART Interrupt enable/disable
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* used by serial_irq_set
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*/
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typedef enum {
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RxIrq, /*!<RX IRQ enable/disable */
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TxIrq /*!<TX IRQ enable/disable */
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} SerialIrq;
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/**
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* @brief UART FlowControl mode
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* used by serial_set_flow_control
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*/
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typedef enum {
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FlowControlNone, /*!<none RTS/CTS */
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FlowControlRTS, /*!<RTS enable */
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FlowControlCTS, /*!<CTS enable */
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FlowControlRTSCTS /*!<RTS/CTS enable */
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} FlowControl;
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typedef void (*uart_irq_handler)(uint32_t id, SerialIrq event);
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typedef struct serial_s serial_t;
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/**
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* @brief Initializes the UART device, include clock/function/interrupt/UART registers.
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* @param obj: uart object define in application software.
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* @param tx: Tx PinName according to pinmux spec.
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* @param rx: Rx PinName according to pinmux spec.
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* @retval none
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*/
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void serial_init(serial_t *obj, PinName tx, PinName rx);
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/**
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* @brief Deinitializes the UART device, include clock/function/interrupt/UART registers.
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* @param obj: uart object define in application software.
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* @retval none
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*/
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void serial_free(serial_t *obj);
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/**
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* @brief Set UART device baudrate.
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* @param obj: uart object define in application software.
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* @param baudrate: Baud Rate Val, like 115200 (unit is HZ).
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* @retval none
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*/
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void serial_baud(serial_t *obj, int baudrate);
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/**
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* @brief Set UART format.
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* @param obj: uart object define in application software.
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* @param data_bits: data bits, this parameter can be one of the following values:
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* @arg 7
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* @arg 8
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* @param parity: this parameter can be one of the following values:
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* @arg ParityNone
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* @arg ParityOdd
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* @arg ParityEven
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* @arg ParityForced1: same action with ParityOdd
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* @arg ParityForced0: same action with ParityEven
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* @param stop_bits: this parameter can be one of the following values:
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* @arg 2
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* @arg 1
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* @retval none
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*/
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void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits);
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/**
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* @brief Set UART interrupt hander if needed.
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* @param obj: uart object define in application software.
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* @param handler: interrupt callback function
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* @param id: interrupt callback parameter
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* @retval none
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*/
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void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id);
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/**
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* @brief Enable/Disable UART interrupt.
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* @param obj: uart object define in application software.
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* @param irq: Tx or Rx interrupt, this parameter can be one of the following values:
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* @arg RxIrq
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* @arg TxIrq
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* @param enable: this parameter can be one of the following values:
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* @arg 0 disable
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* @arg 1 enable
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* @retval none
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*/
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void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable);
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/**
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* @brief get one byte from UART.
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* @param obj: uart object define in application software.
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* @retval : received character
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* @note this function is asynchronous API.
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*/
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int serial_getc(serial_t *obj);
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/**
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* @brief send one byte use UART.
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* @param obj: uart object define in application software.
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* @param c: the data to transmit.
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* @retval none
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* @note this function is asynchronous API.
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*/
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void serial_putc(serial_t *obj, int c);
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/**
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* @brief check if there is data in rx fifo.
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* @param obj: uart object define in application software.
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* @retval 1: TRUE
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* @retval 0: FALSE
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*/
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int serial_readable(serial_t *obj);
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/**
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* @brief check if write data to tx fifo is permitted.
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* @param obj: uart object define in application software.
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* @retval 1: TRUE
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* @retval 0: FALSE
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*/
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int serial_writable(serial_t *obj);
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/**
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* @brief Clear Rx fifo.
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* @param obj: uart object define in application software.
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* @retval none
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*/
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void serial_clear(serial_t *obj);
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/**
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* @brief enable UART break contol function.
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* @param obj: uart object define in application software.
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* @retval none
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*/
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void serial_break_set(serial_t *obj);
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/**
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* @brief disable UART break contol function.
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* @param obj: uart object define in application software.
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* @retval none
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*/
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void serial_break_clear(serial_t *obj);
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/**
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* @brief set tx pinmux.
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* @param tx: Tx PinName according to pinmux spec.
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* @retval none
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*/
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void serial_pinout_tx(PinName tx);
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/**
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* @brief uart autoflow contol setting.
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* @param obj: uart object define in application software.
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* @param type: autoflow control type.
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* @param rxflow: RTS pin.
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* @param txflow: CTS pin.
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* @retval none
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*/
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void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow);
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///@}
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/*\@}*/
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#ifdef __cplusplus
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}
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#endif
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#endif
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