64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
#include "H/Function_Init.H"
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void SPI1_Init(void);
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bit Uart1SendFlag = 0; //Uart1发送中断标志位
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bit Uart1ReceiveFlag = 0; //Uart1接收中断标志位
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bit SPI1Flag = 0; //SPI1数据传输完成标志位
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bit TWI1Flag = 0; //TWI1中断标志位
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/*****************************************************
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*函数名称：void USCI1_Test(void)
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*函数功能：USCI1测试
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*入口参数：void
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*出口参数：void
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*****************************************************/
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void USCI1_Test(void)
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{
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SPI1_Init();
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while(1)
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{
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US1CON2 = 0xAA;
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while(!SPI1Flag);
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SPI1Flag = 0;
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Delay(1000);
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}
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}
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/*****************************************************
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*函数名称：void SPI1_Init(void)
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*函数功能：SPI1初始化
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*入口参数：void
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*出口参数：void
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*****************************************************/
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void SPI1_Init(void)
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{
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OTCON |= 0X40; //选择SPI1模式
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US1CON0 = 0x3F; //设置SPI1为主设备，SCK空闲时间为高电平，SCK周期第二沿采集数据，时钟速率为Fsys/128
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US1CON1 = 0x01; //MSB优先发送，8位传输，允许发送中断
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US1CON0 |= 0x80; //开启SPI1
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IE2 |= 0x01;
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EA = 1;
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}
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/*****************************************************
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*函数名称：void TWI1/PI/UART1_Int() interrupt 7
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*函数功能：USCI1中断函数
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*入口参数：void
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*出口参数：void
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*****************************************************/
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#if (USCI1_Mode == SPI1)
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void Spi1_Int(void) interrupt 15 //SPI1中断函数
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{
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if(US1CON1&0X08) //发送缓存器空标志判断
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{
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US1CON1 &= ~0X08;
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}
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if(US1CON1&0X80) //数据传输标志位判断
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{
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US1CON1 &= ~0X80;
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SPI1Flag = 1;
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}
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}
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#endif |