2009-12-25 20:18:53 +08:00
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/*
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* File : serial.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-01-05 Bernard first version
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*/
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2009-07-03 06:48:23 +08:00
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#ifndef __RT_HW_SERIAL_H__
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#define __RT_HW_SERIAL_H__
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#include <rthw.h>
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#include <rtthread.h>
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/* STM32F10x library definitions */
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2009-09-28 08:00:23 +08:00
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#include <stm32f10x.h>
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2009-07-03 06:48:23 +08:00
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#define UART_DMA_RX_DESCRIPTOR 2
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#define UART_DMA_RX_BUFFER_SIZE 16
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#define UART_RX_BUFFER_SIZE 64
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#define UART_TX_BUFFER_SIZE 64
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struct stm32_serial_dma_rx
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{
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DMA_Channel_TypeDef* dma_channel;
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rt_uint8_t rx_buffer[UART_DMA_RX_DESCRIPTOR][UART_RX_BUFFER_SIZE];
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rt_uint32_t save_descriptor;
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rt_uint32_t read_index, read_descriptor;
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rt_bool_t is_full;
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};
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/* data node for Tx Mode */
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struct stm32_serial_data_node
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{
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rt_uint8_t *data_ptr;
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rt_size_t data_size;
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struct stm32_serial_data_node *next, *prev;
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};
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struct stm32_serial_dma_tx
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{
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DMA_Channel_TypeDef* dma_channel;
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struct stm32_serial_data_node *list_head, *list_tail;
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};
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struct stm32_serial_int_rx
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{
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rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
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rt_uint32_t read_index, save_index;
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};
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struct stm32_serial_int_tx
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{
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rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
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rt_uint32_t write_index, save_index;
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};
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struct stm32_serial_device
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{
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USART_TypeDef* uart_device;
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/* rx structure */
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struct stm32_serial_int_rx* int_rx;
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struct stm32_serial_dma_rx* dma_rx;
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/* tx structure */
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struct stm32_serial_int_tx* int_tx;
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struct stm32_serial_dma_tx* dma_tx;
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};
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rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct stm32_serial_device *serial);
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void rt_hw_serial_isr(rt_device_t device);
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void rt_hw_serial_dma_rx_isr(rt_device_t device);
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void rt_hw_serial_dma_tx_isr(rt_device_t device);
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#endif
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