71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
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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 - 2010, 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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* 2010-03-29 Bernard remove interrupt tx and DMA rx mode.
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*/
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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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#include <stm32f2xx.h>
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#define UART_RX_BUFFER_SIZE 64
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#define UART_TX_DMA_NODE_SIZE 4
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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 */
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DMA_Stream_TypeDef* dma_channel;
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/* data list head and tail */
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struct stm32_serial_data_node *list_head, *list_tail;
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/* data node memory pool */
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struct rt_mempool data_node_mp;
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rt_uint8_t data_node_mem_pool[UART_TX_DMA_NODE_SIZE *
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(sizeof(struct stm32_serial_data_node) + sizeof(void*))];
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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_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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/* tx structure */
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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_tx_isr(rt_device_t device);
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#endif
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