dma_example.txt

UART ADI example 简单的例子 练练手

/****************************************Copyright (c)****************************************************
**                            Guangzhou ZHIYUAN electronics Co.,LTD.
**                                      
**                                 http://www.embedtools.com
**
**--------------File Info---------------------------------------------------------------------------------
** File name:               main.c
** Latest modified Date:    2008-8-18
** Latest Version:          1.0
** Descriptions:            用户程序主文件
**
**--------------------------------------------------------------------------------------------------------
** Created by:              CaiWenqi
** Created date:            2008-8-18
** Version:                 1.0
** Descriptions:            The original version
**
**--------------------------------------------------------------------------------------------------------
** Modified by:             
** Modified date:           
** Version:                 
** Descriptions:            
**
*********************************************************************************************************/
#include "config.h"

/*********************************************************************************************************
** Function name:       sysDelay
** Descriptions:        主程序
** Input parameters:    uiT 数值越大，延时越长
** Output parameters:   NONE
** Returned value:      NONE
*********************************************************************************************************/
void sysDelay(uint16 uiT)
{
	uint16 i,j;
	for(j = 0; j < uiT; j++)
	for(i = 0; i < 0x0fff; i++);
}


/*********************************************************************************************************
** Function name:       main
** Descriptions:        主程序
** Input parameters:    NONE
** Output parameters:   NONE
** Returned value:      NONE
*********************************************************************************************************/
void main(void)
{
	CreatDescLMode a1,a2,a3;
	
	char *str1 = "/************************/\n";
	char *str2 = "/* BeiJing huanying ni! */\n";
	char *str3 = "/**********OVER**********/\n";
	
	uartConfig(9600, 8, 1, PARITY_DIS);
    *pUART_IER |= 0x0007;
    ssync();

    //uartSendStr("System Runing...\n");
    
    a1.uiNextDescPtr    = (uint32)&a2;
    a1.uiStartAddr      = (uint32)(str1);
    a1.ucDmaConfig      = 0x0001|(7<<12)|(7<<8);
    a1.ucXCount         = strlen(str1);
    a1.ucXModify        = 1;

    a2.uiNextDescPtr    = (uint32)&a3;
    a2.uiStartAddr      = (uint32)(str2);
    a2.ucDmaConfig      = 0x0001|(7<<12)|(7<<8);
    a2.ucXCount         = strlen(str2);
    a2.ucXModify        = 1;  
      
    a3.uiNextDescPtr    = 0;
    a3.uiStartAddr      = (uint32)(str3);
    a3.ucDmaConfig      = 0x0001;
    a3.ucXCount         = strlen(str3);
    a3.ucXModify        = 1;

   
	//*pDMA7_PERIPHERAL_MAP = 0;
	 ssync();
	*pDMA7_PERIPHERAL_MAP = 7 << 12;                //配置外设映射
	 ssync();
	*pDMA7_NEXT_DESC_PTR = (&a1);
	 ssync();

	 *pDMA7_CONFIG = 0x0001|(7<<12)|(7<<8)|(1<<5);  //启动传输
	 ssync();

    //uartSendStr("Setup Successfully!\n");
	 
	while(1)
	{

	}
}




/*********************************************************************************************************
  END FILE
*********************************************************************************************************/