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guocheng.kgc 2020-06-18 20:06:52 +08:00 • committed by shengdong.dsd
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Living_SDK/include/hal/soc/uart.h Executable file
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/*
* Copyright (C) 2015-2017 Alibaba Group Holding Limited
*/
#ifndef HAL_UART_H
#define HAL_UART_H
/*
* UART data width
*/
typedef enum {
DATA_WIDTH_5BIT,
DATA_WIDTH_6BIT,
DATA_WIDTH_7BIT,
DATA_WIDTH_8BIT,
DATA_WIDTH_9BIT
} hal_uart_data_width_t;
/*
* UART stop bits
*/
typedef enum {
STOP_BITS_1,
STOP_BITS_2
} hal_uart_stop_bits_t;
/*
* UART flow control
*/
typedef enum {
FLOW_CONTROL_DISABLED,
FLOW_CONTROL_CTS,
FLOW_CONTROL_RTS,
FLOW_CONTROL_CTS_RTS
} hal_uart_flow_control_t;
/*
* UART parity
*/
typedef enum {
NO_PARITY,
ODD_PARITY,
EVEN_PARITY
} hal_uart_parity_t;
/*
* UART mode
*/
typedef enum {
MODE_TX,
MODE_RX,
MODE_TX_RX
} hal_uart_mode_t;
/*
* UART configuration
*/
typedef struct {
uint32_t baud_rate;
hal_uart_data_width_t data_width;
hal_uart_parity_t parity;
hal_uart_stop_bits_t stop_bits;
hal_uart_flow_control_t flow_control;
hal_uart_mode_t mode;
} uart_config_t;
typedef struct {
uint8_t port; /* uart port */
uart_config_t config; /* uart config */
void *priv; /* priv data */
} uart_dev_t;
/**
* Initialises a UART interface
*
*
* @param[in] uart the interface which should be initialised
*
* @return 0 : on success, EIO : if an error occurred with any step
*/
int32_t hal_uart_init(uart_dev_t *uart);
/**
* Transmit data on a UART interface
*
* @param[in] uart the UART interface
* @param[in] data pointer to the start of data
* @param[in] size number of bytes to transmit
*
* @return 0 : on success, EIO : if an error occurred with any step
*/
int32_t hal_uart_send(uart_dev_t *uart, const void *data, uint32_t size, uint32_t timeout);
/**
* Receive data on a UART interface
*
* @param[in] uart the UART interface
* @param[out] data pointer to the buffer which will store incoming data
* @param[in] expect_size number of bytes to receive
* @param[in] timeout timeout in milisecond, set this value to HAL_WAIT_FOREVER
* if you want to wait forever
*
* @return 0 : on success, EIO : if an error occurred with any step
*/
int32_t hal_uart_recv(uart_dev_t *uart, void *data, uint32_t expect_size, uint32_t timeout);
/**
* Receive data on a UART interface
*
* @param[in] uart the UART interface
* @param[out] data pointer to the buffer which will store incoming data
* @param[in] expect_size number of bytes to receive
* @param[out] recv_size number of bytes received
* @param[in] timeout timeout in milisecond, set this value to HAL_WAIT_FOREVER
* if you want to wait forever
*
* @return 0 : on success, EIO : if an error occurred with any step
*/
int32_t hal_uart_recv_II(uart_dev_t *uart, void *data, uint32_t expect_size,
uint32_t *recv_size, uint32_t timeout);
/**
* Deinitialises a UART interface
*
* @param[in] uart the interface which should be deinitialised
*
* @return 0 : on success, EIO : if an error occurred with any step
*/
int32_t hal_uart_finalize(uart_dev_t *uart);
#endif /* HAL_UART_H */