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Re: 中斷問題
#2
版主
版主


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使用同一個中斷進入後再判斷是 RC1IF 或 RC2IF 所發生的中斷再跳到相對應的接收程式讀取 RCREG

發表於: 2007/5/14 17:42
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部


中斷問題
#1
中級會員
中級會員


查看用戶資訊
#pragma code low_vector=0x18 // 設定中斷進入點
if(RC1IF==1)
{
void low_interrupt(void)
{
_asm
goto Rx1_isr
_endasm
}
#pragma code
#pragma interruptlow Rx1_isr
void Rx1_isr(void)
{

receive_buff[buff_point++]=Read1USART();
if(buff_point >= 2)
{
receive_flag = 1
buff_point= 0;
}//end if(buff_point >= 2)
}//end void Rx1_isr(void)
}//end if(RC1IF==1)
//-----------------------------------------------------------------
if(RC2IF==1)
{
void low_interrupt(void)
{
_asm
goto Rx2_isr
_endasm
}
#pragma code
#pragma interruptlow Rx2_isr
void Rx2_isr(void)
{

receive_buff2[buff_point2++]=Read2USART();
if(buff_point2 >= 2)
{
receive_flag2 = 1
buff_point2= 0;
}//end if(buff_point2 >= 2)
}//end void Rx2_isr(void)
}//end if(RC2IF==1)


我要用2個uart,然後都是使用接收中斷
請問要使用2個優先權相同,但是中斷源不同的中斷,可以像我上面寫的這樣使用嗎?
請問像上面這樣子使用,需要開啟哪幾個中斷功能呢?
(1).全域中斷控制
(2).週邊中斷功能
(3).中斷優先功能
(4).低優先中斷功能
(5).高優先中斷功能



發表於: 2007/5/14 12:59
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部







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