84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/*
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* Copyright (c) 2006-2018, 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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* 2018.10.30 SummerGift change to new framework
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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 <rtthread.h>
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#include "rtdevice.h"
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#include <rthw.h>
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#include <drv_common.h>
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int rt_hw_usart_init(void);
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#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32L4)
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#define DMA_INSTANCE_TYPE DMA_Channel_TypeDef
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#elif defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
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#define DMA_INSTANCE_TYPE DMA_Stream_TypeDef
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#endif /* defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32L4) */
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/* stm32 config class */
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struct stm32_uart_config
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{
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const char *name;
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USART_TypeDef *Instance;
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IRQn_Type irq_type;
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union {
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DMA_INSTANCE_TYPE *Instance;
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#if defined(SOC_SERIES_STM32F1)
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/* the DMA config has channel only, such as on STM32F1xx */
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struct {
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DMA_INSTANCE_TYPE *Instance;
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} channel;
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#endif
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#if defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
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/* the DMA config has stream and channel, such as on STM32F4xx */
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struct {
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DMA_INSTANCE_TYPE *Instance;
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rt_uint32_t channel;
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} stream_channel;
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#endif
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#if defined(SOC_SERIES_STM32L4)
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/* the DMA config has channel and request, such as on STM32L4xx */
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struct {
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DMA_INSTANCE_TYPE *Instance;
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rt_uint32_t request;
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} channel_request;
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#endif
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} dma;
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rt_uint32_t dma_rcc;
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IRQn_Type dma_irq;
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};
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/* stm32 uart dirver class */
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struct stm32_uart
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{
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UART_HandleTypeDef handle;
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const struct stm32_uart_config *config;
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#ifdef BSP_UART_USING_DMA_RX
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struct
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{
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DMA_HandleTypeDef handle;
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rt_size_t last_index;
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} dma;
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#endif
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struct rt_serial_device serial;
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};
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#endif /* __DRV_USART_H__ */
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