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/*
* Copyright (c) 2025 ASPEED
* Copyright (c) 2018-2019 Nordic Semiconductor ASA
* Copyright (c) 2015 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Public APIs for UART drivers
*/
#ifndef __AST27X0_INCLUDE_UART_H__
#define __AST27X0_INCLUDE_UART_H__
#define UART12 0x14C33B00
/**
* @brief UART Interface
* @defgroup uart_interface UART Interface
* @since 1.0
* @version 1.0.0
* @ingroup io_interfaces
* @{
*/
#ifdef __cplusplus
extern "C" {
#endif
/** @brief Parity modes */
enum uart_config_parity {
UART_CFG_PARITY_NONE, /**< No parity */
UART_CFG_PARITY_ODD, /**< Odd parity */
UART_CFG_PARITY_EVEN, /**< Even parity */
UART_CFG_PARITY_MARK, /**< Mark parity */
UART_CFG_PARITY_SPACE, /**< Space parity */
};
/** @brief Number of stop bits. */
enum uart_config_stop_bits {
UART_CFG_STOP_BITS_0_5, /**< 0.5 stop bit */
UART_CFG_STOP_BITS_1, /**< 1 stop bit */
UART_CFG_STOP_BITS_1_5, /**< 1.5 stop bits */
UART_CFG_STOP_BITS_2, /**< 2 stop bits */
};
/** @brief Number of data bits. */
enum uart_config_data_bits {
UART_CFG_DATA_BITS_5, /**< 5 data bits */
UART_CFG_DATA_BITS_6, /**< 6 data bits */
UART_CFG_DATA_BITS_7, /**< 7 data bits */
UART_CFG_DATA_BITS_8, /**< 8 data bits */
UART_CFG_DATA_BITS_9, /**< 9 data bits */
};
/**
* @brief Hardware flow control options.
*
* With flow control set to none, any operations related to flow control
* signals can be managed by user with uart_line_ctrl functions.
* In other cases, flow control is managed by hardware/driver.
*/
enum uart_config_flow_control {
UART_CFG_FLOW_CTRL_NONE,
UART_CFG_FLOW_CTRL_RTS_CTS,
UART_CFG_FLOW_CTRL_DTR_DSR,
UART_CFG_FLOW_CTRL_RS485,
};
/**
* @brief UART controller configuration structure
*/
struct uart_config {
uint32_t baudrate; /**< Baudrate setting in bps */
uint8_t parity; /**< Parity bit, use @ref uart_config_parity */
uint8_t stop_bits; /**< Stop bits, use @ref uart_config_stop_bits */
uint8_t data_bits; /**< Data bits, use @ref uart_config_data_bits */
uint8_t flow_ctrl; /**< Flow control setting, use @ref uart_config_flow_control */
};
void uart_aspeed_poll_out(unsigned char c);
int uart_aspeed_init(uintptr_t base);
#ifdef __cplusplus
}
#endif
#endif /* __AST27X0_INCLUDE_UART_H__ */
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