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82 lines
1.8 KiB
82 lines
1.8 KiB
/*
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* Copyright (c) 2006-2025, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-08-20 BruceOu first implementation
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* 2025-10-09 WangShun compatible with RT-Studio
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*/
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#ifndef __DRV_USART_H__
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#define __DRV_USART_H__
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#include <rthw.h>
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#include <rtthread.h>
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#include <board.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(SOC_SERIES_GD32H7xx) || !defined(SOC_SERIES_GD32H75E)
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#undef RT_SERIAL_USING_DMA
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#endif
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#define UART_ENABLE_IRQ(n) NVIC_EnableIRQ((n))
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#define UART_DISABLE_IRQ(n) NVIC_DisableIRQ((n))
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#ifdef RT_SERIAL_USING_DMA
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typedef struct
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{
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/* dma peripheral */
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uint32_t dma_periph;
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/* dma channel */
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dma_channel_enum dma_ch;
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#if defined(SOC_SERIES_GD32H7xx) || defined(SOC_SERIES_GD32H75E)
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/* rx dma request */
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uint32_t dma_mux_req_rx;
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#endif
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/* dma flag */
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uint32_t rx_flag;
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/* dma irq channel */
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uint8_t rx_irq_ch;
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/* setting receive len */
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rt_size_t setting_recv_len;
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/* last receive index */
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rt_size_t last_recv_index;
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} gd32_uart_dma;
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#endif
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/* GD32 uart driver */
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struct gd32_uart
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{
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uint32_t uart_periph; /* Instance */
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IRQn_Type irqn; /* irqn */
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rcu_periph_enum per_clk; /* uart_clk */
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const char *tx_pin_name; /* tx pin name */
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const char *rx_pin_name; /* rx pin name */
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const char *alternate; /* rx pin name */
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#ifdef RT_SERIAL_USING_DMA
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gd32_uart_dma *uart_dma;
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#ifdef RT_SERIAL_USING_TX_DMA
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gd32_uart_dma *uart_tx_dma;
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#endif
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#endif
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struct rt_serial_device * serial; /* serial device */
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char *device_name;
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};
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int rt_hw_usart_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __DRV_USART_H__ */
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