57 lines
2.3 KiB
C
57 lines
2.3 KiB
C
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/********************************** (C) COPYRIGHT *******************************
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* File Name : MainSlave.C
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* Author : WCH
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* Version : V1.0
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* Date : 2017/01/20
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* Description : CH554 SPI设备例子演示，连接SPI主机进行数据收发，主机获取设备的数据取反
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然后发送给设备
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*******************************************************************************/
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#include "..\Public\CH554.H"
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#include "..\Public\Debug.H"
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#include "SPI.H"
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#include "stdio.h"
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#include "string.h"
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/*硬件接口定义*/
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/******************************************************************************
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使用CH554 硬件SPI接口
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CH554 DIR
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P1.4 <==> SCS
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P1.5 <==> MOSI
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P1.6 <==> MISO
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P1.7 <==> SCK
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*******************************************************************************/
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void main()
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{
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UINT8 ret,i=0;
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CfgFsys( );
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mDelaymS(5); //修改系统主频，建议稍加延时等待主频稳定
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mInitSTDIO( ); //串口0初始化
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printf("start ...\n");
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SPISlvModeSet( ); //SPI从机模式设置
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// #if SPI0Interrupt
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// CH554SPIInterruptInit(); //SPI中断初始化
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// EA = 1; //使能全局中断
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// #endif
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while(1)
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{
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CH554SPISlvWrite(i); //SPI等待主机把数据取走
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mDelayuS(2);
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ret = CH554SPISlvRead(); //读取SPI主机的数据
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if(ret != (i^0xff))
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{
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printf("Err: %02X %02X \n",(UINT16)i,(UINT16)ret); //主机取反返回，如果值错误，打印错误数据
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}
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mDelaymS(10);
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i = i+1;
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if((i%40)==0) //每成功40次打印一次
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{
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printf("success %02x\n",(UINT16)i);
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}
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}
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} |