/*
 * Copyright (c) 2006-2025, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2022-06-04     BruceOu      first implementation
 */

#ifndef __DRV_USART_H__
#define __DRV_USART_H__

#include <rthw.h>
#include <rtthread.h>
#include <board.h>

#ifdef __cplusplus
extern "C" {
#endif

/* GD32 uart driver */
/* Todo: compress uart info */
struct gd32_uart
{
    uint32_t uart_periph;           /* Todo: 3bits */
    IRQn_Type irqn;                 /* Todo: 7bits */
    rcu_periph_enum per_clk;        /* Todo: 5bits */
    rcu_periph_enum tx_gpio_clk;    /* Todo: 5bits */
    rcu_periph_enum rx_gpio_clk;    /* Todo: 5bits */
    uint32_t tx_port;               /* Todo: 4bits */
    uint16_t tx_pin;                /* Todo: 4bits */
    uint32_t rx_port;               /* Todo: 4bits */
    uint16_t rx_pin;                /* Todo: 4bits */
#if defined (SOC_SERIES_GD32VW55x)
    uint32_t tx_alt;                /* GPIO alternate function for TX */
    uint32_t rx_alt;                /* GPIO alternate function for RX */
#endif
    struct rt_serial_device * serial;
    char *device_name;
};

int rt_hw_usart_init(void);

#ifdef __cplusplus
}
#endif

#endif /* __DRV_USART_H__ */