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Re: 請問:外部計數怎麼用?
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版主
 
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//************************************************
//* Function: Initialize Timer0 * //************************************************ void InitializeTMR0(void) { T0CON=0b10111000; // high to low trigger, 16-bit mode, don't use the prescaler // Initialize Timer0 for using External clock input T0CKI IPR1bits.TMR0IP=0; // Set Timer0 for Low Priority Interrupt PIR1bits.TMR0IF=0; // Clear Interrupt flag of Timer 0 // options TMR0H = (0xFFFF-Timer_Count)/256; // options TMR0L = (0xFFFF-Timer_Count)%256; PIE1bits.TMR0IE=1; // Enable Timer0 Interrupt } 或著 OpenTimer0(TIMER_INT_ON & T0_16BIT & T0_EDGE_FALL & T0_SOURCE_EXT & T0_PS 1_1 ); 注意一下 不要把 Timer0 與 Timer1 的定義混著用，還有是否有將 timer.h include進來
發表於: 2005/2/17 9:57
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Re: 請問:外部計數怎麼用?
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高級會員
 
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謝謝版主,我試著改成OpenTimer(TIMER_INT_ON&T0_16BIT RW&T0 SOURCE_EXT & T0_PS 1_1&T0_OSC1EN_OFF& T0 SYNC EXT OFF),還是不行....
不知道有沒有另外的方法..... 
發表於: 2005/2/16 18:26
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Re: 請問:外部計數怎麼用?
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版主
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請試著改為 OpenTimer0 ( )
RA4/T0CK 是接到 Timer0
發表於: 2005/2/16 14:47
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請問:外部計數怎麼用?
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高級會員
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想請問一下各位外部RA4/T0CKI的計數CLOCK要怎麼用?
我的方法: 1.開啟外部計數OpenTimer1(TIMER_INT_ON& T1_16BIT RW&T1 SOURCE_EXT & T1_PS 1_1&T1_OSC1EN_OFF& T1 SYNC EXT OFF) 2.在RA4接上SWITCH當作計數器 這個方法行不通,請各位幫忙解答 
發表於: 2005/2/15 20:28
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