rt-thread/bsp/gd32/risc-v/libraries/gd32_drivers/drv_usart.h

/*
 * Copyright (c) 2006-2022, 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
    struct rt_serial_device * serial;
    char *device_name;
};

int rt_hw_usart_init(void);

#ifdef __cplusplus
}
#endif

#endif /* __DRV_USART_H__ */