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remove interrupt Tx and DMA Rx mode in USART.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@556 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
2010-03-29 16:22:08 +00:00
parent 742c22f928
commit e8449b0f67
2 changed files with 107 additions and 296 deletions
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34
libcpu/arm/stm32/serial.h
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@@ -1,7 +1,7 @@
/*
* File : serial.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009, RT-Thread Development Team
* 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
@@ -10,6 +10,7 @@
* 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__
@@ -20,20 +21,8 @@
/* STM32F10x library definitions */
#include <stm32f10x.h>
#define UART_DMA_RX_DESCRIPTOR 2
#define UART_DMA_RX_BUFFER_SIZE 16
#define UART_RX_BUFFER_SIZE 64
#define UART_TX_BUFFER_SIZE 64
struct stm32_serial_dma_rx
{
DMA_Channel_TypeDef* dma_channel;
rt_uint8_t rx_buffer[UART_DMA_RX_DESCRIPTOR][UART_RX_BUFFER_SIZE];
rt_uint32_t save_descriptor;
rt_uint32_t read_index, read_descriptor;
rt_bool_t is_full;
};
#define UART_TX_DMA_NODE_SIZE 4
/* data node for Tx Mode */
struct stm32_serial_data_node
@@ -44,8 +33,16 @@ struct stm32_serial_data_node
};
struct stm32_serial_dma_tx
{
/* DMA Channel */
DMA_Channel_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
@@ -54,29 +51,20 @@ struct stm32_serial_int_rx
rt_uint32_t read_index, save_index;
};
struct stm32_serial_int_tx
{
rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
rt_uint32_t write_index, save_index;
};
struct stm32_serial_device
{
USART_TypeDef* uart_device;
/* rx structure */
struct stm32_serial_int_rx* int_rx;
struct stm32_serial_dma_rx* dma_rx;
/* tx structure */
struct stm32_serial_int_tx* int_tx;
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_rx_isr(rt_device_t device);
void rt_hw_serial_dma_tx_isr(rt_device_t device);
#endif