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serialX.h 6.65 KB
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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-04-10 THEWON serialX first version
* 2022-06-08 THEWON add No TX Empty interrupt support
* 2023-02-15 THEWON add init ops
*/
#ifndef __SERIALX_H__
#define __SERIALX_H__
#include <rtthread.h>
#include <rtdevice.h>
#define BAUD_RATE_2400 2400
#define BAUD_RATE_4800 4800
#define BAUD_RATE_9600 9600
#define BAUD_RATE_19200 19200
#define BAUD_RATE_38400 38400
#define BAUD_RATE_57600 57600
#define BAUD_RATE_115200 115200
#define BAUD_RATE_230400 230400
#define BAUD_RATE_460800 460800
#define BAUD_RATE_921600 921600
#define BAUD_RATE_2000000 2000000
#define BAUD_RATE_3000000 3000000
#define DATA_BITS_5 5
#define DATA_BITS_6 6
#define DATA_BITS_7 7
#define DATA_BITS_8 8
#define DATA_BITS_9 9
#define STOP_BITS_1 0
#define STOP_BITS_2 1
#define STOP_BITS_3 2
#define STOP_BITS_4 3
#ifdef _WIN32
#include <windows.h>
#else
#define PARITY_NONE 0
#define PARITY_ODD 1
#define PARITY_EVEN 2
#endif
#define BIT_ORDER_LSB 0
#define BIT_ORDER_MSB 1
#define NRZ_NORMAL 0 /* Non Return to Zero : normal mode */
#define NRZ_INVERTED 1 /* Non Return to Zero : inverted mode */
#ifndef RT_SERIAL_FIFO_BUFSZ
#define RT_SERIAL_FIFO_BUFSZ 128
#endif
#ifndef RT_SERIAL_DMA_BUFSZ
#define RT_SERIAL_DMA_BUFSZ 32
#endif
#if RT_SERIAL_DMA_BUFSZ < 32
#define RT_SERIAL_DMA_BUFSZ 32
#endif
#if RT_SERIAL_FIFO_BUFSZ < (RT_SERIAL_DMA_BUFSZ*2)
#undef RT_SERIAL_FIFO_BUFSZ
#define RT_SERIAL_FIFO_BUFSZ RT_SERIAL_DMA_BUFSZ*2
#endif
#define RT_SERIAL_EVENT_RX_IND 0x01 /* Rx indication */
#define RT_SERIAL_EVENT_TX_DONE 0x02 /* Tx complete */
#define RT_SERIAL_EVENT_RX_DMADONE 0x03 /* Rx DMA transfer done */
#define RT_SERIAL_EVENT_TX_DMADONE 0x04 /* Tx DMA transfer done */
#define RT_SERIAL_EVENT_RX_TIMEOUT 0x05 /* Rx timeout */
#define RT_SERIAL_DMA_RX 0x01
#define RT_SERIAL_DMA_TX 0x02
#define RT_SERIAL_RX_INT 0x01
#define RT_SERIAL_TX_INT 0x02
#define RT_SERIAL_ERR_OVERRUN 0x01
#define RT_SERIAL_ERR_FRAMING 0x02
#define RT_SERIAL_ERR_PARITY 0x03
#define RT_SERIAL_TX_DATAQUEUE_SIZE 2048
#define RT_SERIAL_TX_DATAQUEUE_LWM 30
#define RT_SERIAL_FLOWCONTROL_CTSRTS 1
#define RT_SERIAL_FLOWCONTROL_NONE 0
/* Default config for serial_configure structure */
#define RT_SERIAL_CONFIG_DEFAULT \
{ \
BAUD_RATE_115200, /* 115200 bits/s */ \
DATA_BITS_8, /* 8 databits */ \
STOP_BITS_1, /* 1 stopbit */ \
PARITY_NONE, /* No parity */ \
BIT_ORDER_LSB, /* LSB first sent */ \
NRZ_NORMAL, /* Normal mode */ \
RT_SERIAL_FIFO_BUFSZ, /* Buffer size */ \
RT_SERIAL_FLOWCONTROL_NONE, /* Off flowcontrol */ \
0 \
}
#define RT_SERIAL_EVENT_TXDONE (1 << 0)
#define RT_SERIAL_EVENT_RXDONE (1 << 1)
//#define RT_SERIAL_USE_EVENT // Just for test, maybe using event in the future
struct rt_serial_device;
typedef int (*cb_serial_tx)(struct rt_serial_device *serial, const rt_uint8_t *data, int length);
typedef int (*cb_serial_rx)(struct rt_serial_device *serial, rt_uint8_t *data, int length);
struct serial_configure
{
rt_uint32_t baud_rate;
rt_uint32_t data_bits :4;
rt_uint32_t stop_bits :2;
rt_uint32_t parity :2;
rt_uint32_t bit_order :1;
rt_uint32_t invert :1;
rt_uint32_t bufsz :16; // unused, move it to struct rt_serial_device
rt_uint32_t flowcontrol :1;
rt_uint32_t reserved :5;
};
/*
* Serial FIFO mode
*/
struct rt_serial_fifo
{
rt_uint32_t buf_sz;
/* software fifo */
rt_uint8_t *buffer;
rt_uint16_t put_index, get_index;
rt_bool_t is_full;
};
struct rt_serial_device
{
struct rt_device parent;
const struct rt_uart_ops *ops;
struct serial_configure config;
rt_uint32_t bufsz;
rt_tick_t timeout_tick; /**< timeout tick */
void *serial_rx;
void *serial_tx;
#ifdef RT_SERIAL_USING_DMA
rt_size_t dma_idx_rx;
rt_uint8_t serial_dma_rx[RT_SERIAL_DMA_BUFSZ];
rt_uint8_t serial_dma_tx[RT_SERIAL_DMA_BUFSZ];
#endif
cb_serial_rx _cb_rx;
cb_serial_tx _cb_tx;
#ifndef RT_SERIAL_USE_EVENT
struct rt_completion completion_rx;
struct rt_completion completion_tx;
#else
rt_event_t rx_done;
rt_event_t tx_done;
#endif
};
typedef struct rt_serial_device rt_serial_t;
/**
* uart operators
*/
struct rt_uart_ops
{
rt_err_t (*init)(struct rt_serial_device *serial);
rt_err_t (*configure)(struct rt_serial_device *serial, struct serial_configure *cfg);
rt_err_t (*control)(struct rt_serial_device *serial, int cmd, void *arg);
int (*putc)(struct rt_serial_device *serial, char c);
int (*getc)(struct rt_serial_device *serial);
int (*flush)(struct rt_serial_device *serial);
#if defined (RT_SERIAL_NO_TXEIT)
rt_bool_t (*is_int_txing)(struct rt_serial_device *serial);
void (*start_tx)(struct rt_serial_device *serial, rt_uint8_t ch);
#else
void (*start_tx)(struct rt_serial_device *serial);
#endif
void (*stop_tx)(struct rt_serial_device *serial);
#ifdef RT_SERIAL_USING_DMA
rt_bool_t (*is_dma_txing)(struct rt_serial_device *serial);
void (*start_dma_tx)(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size);
void (*stop_dma_tx)(struct rt_serial_device *serial);
#endif
void (*enable_interrupt)(struct rt_serial_device *serial);
void (*disable_interrupt)(struct rt_serial_device *serial);
};
void rt_hw_serial_isr(struct rt_serial_device *serial, int event);
rt_err_t rt_hw_serial_register(struct rt_serial_device *serial,
const char *name,
rt_uint32_t flag,
void *data);
#endif
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