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75 lines
1.8 KiB
75 lines
1.8 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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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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#ifndef _USART_H_
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#define _USART_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <gpio.h>
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#include <stdint.h>
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struct usart;
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typedef uint8_t UsartPort;
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typedef enum
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{
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USART_DATA_BITS_8,
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USART_DATA_BITS_9,
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} UsartDataBitsCfg;
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typedef enum
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{
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USART_STOP_BITS_0_5,
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USART_STOP_BITS_1_0,
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USART_STOP_BITS_1_5,
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USART_STOP_BITS_2_0,
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} UsatStopBitsCfg;
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typedef enum
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{
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USART_PARITY_NONE,
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USART_PARITY_EVEN,
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USART_PARITY_ODD,
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} UsartParityCfg;
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typedef enum
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{
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USART_FLOW_CONTROL_NONE,
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USART_FLOW_CONTROL_RTS,
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USART_FLOW_CONTROL_CTS,
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USART_FLOW_CONTROL_RTS_CTS,
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} UsartFlowControlCfg;
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void usartOpen(struct usart* __restrict usart, UsartPort port, /* port number is 1-based!!!!! */
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uint32_t txGpioNum, uint32_t rxGpioNum,
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uint32_t baud, UsartDataBitsCfg data_bits,
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UsatStopBitsCfg stop_bits, UsartParityCfg parity,
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UsartFlowControlCfg flow_control);
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void usartClose(const struct usart* __restrict usart);
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void usartFlush(const struct usart* __restrict usart);
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void usartPutchar(const struct usart* __restrict usart, char c);
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#ifdef __cplusplus
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}
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#endif
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#endif
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