71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
|
/*
|
||
|
|
* File : serial.h
|
||
|
|
* This file is part of RT-Thread RTOS
|
||
|
|
* COPYRIGHT (C) 2009 - 2010, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* The license and distribution terms for this file may be
|
||
|
|
* found in the file LICENSE in this distribution or at
|
||
|
|
* http://www.rt-thread.org/license/LICENSE
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2009-01-05 Bernard first version
|
||
|
|
* 2010-03-29 Bernard remove interrupt tx and DMA rx mode.
|
||
|
|
*/
|
||
|
|
#ifndef __RT_HW_SERIAL_H__
|
||
|
|
#define __RT_HW_SERIAL_H__
|
||
|
|
|
||
|
|
#include <rthw.h>
|
||
|
|
#include <rtthread.h>
|
||
|
|
|
||
|
|
/* STM32F40x library definitions */
|
||
|
|
#include <stm32f4xx.h>
|
||
|
|
|
||
|
|
#define UART_RX_BUFFER_SIZE 64
|
||
|
|
#define UART_TX_DMA_NODE_SIZE 4
|
||
|
|
|
||
|
|
/* data node for Tx Mode */
|
||
|
|
struct stm32_serial_data_node
|
||
|
|
{
|
||
|
|
rt_uint8_t *data_ptr;
|
||
|
|
rt_size_t data_size;
|
||
|
|
struct stm32_serial_data_node *next, *prev;
|
||
|
|
};
|
||
|
|
struct stm32_serial_dma_tx
|
||
|
|
{
|
||
|
|
/* DMA Channel */
|
||
|
|
DMA_Stream_TypeDef* dma_channel;
|
||
|
|
|
||
|
|
/* data list head and tail */
|
||
|
|
struct stm32_serial_data_node *list_head, *list_tail;
|
||
|
|
|
||
|
|
/* data node memory pool */
|
||
|
|
struct rt_mempool data_node_mp;
|
||
|
|
rt_uint8_t data_node_mem_pool[UART_TX_DMA_NODE_SIZE *
|
||
|
|
(sizeof(struct stm32_serial_data_node) + sizeof(void*))];
|
||
|
|
};
|
||
|
|
|
||
|
|
struct stm32_serial_int_rx
|
||
|
|
{
|
||
|
|
rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
|
||
|
|
rt_uint32_t read_index, save_index;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct stm32_serial_device
|
||
|
|
{
|
||
|
|
USART_TypeDef* uart_device;
|
||
|
|
|
||
|
|
/* rx structure */
|
||
|
|
struct stm32_serial_int_rx* int_rx;
|
||
|
|
|
||
|
|
/* tx structure */
|
||
|
|
struct stm32_serial_dma_tx* dma_tx;
|
||
|
|
};
|
||
|
|
|
||
|
|
rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct stm32_serial_device *serial);
|
||
|
|
|
||
|
|
void rt_hw_serial_isr(rt_device_t device);
|
||
|
|
void rt_hw_serial_dma_tx_isr(rt_device_t device);
|
||
|
|
|
||
|
|
#endif
|