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/*
* 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__ */
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