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Re: c18語法OpenADC()
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版主
 
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OpenADC( ) 函數在C18的 Libraries 裏至少有三種針對不同的PIC18F 的設定，PIC18F452 為最簡單的一類，PIC18F6x20 為一種，新的 PIC 像 PIC18f4620 , 18F1320 等就是使用你所提到的有三個參數輸入。最後一項數字輸入是用來設定ADCON1暫存器裡的 ADC 腳位與數位腳位的設定。詳情請參考 Data Sheet。
ADCON1 Register: bit 3 PCFG3: A/D Port Configuration bit - AN3 1 = Pin configured as a digital port 0 = Pin configured as an analog channel - digital input disabled and reads ‘0’ bit 2 PCFG2: A/D Port Configuration bit - AN2 1 = Pin configured as a digital port 0 = Pin configured as an analog channel - digital input disabled and reads ‘0’ bit 1 PCFG1: A/D Port Configuration bit - AN1 1 = Pin configured as a digital port 0 = Pin configured as an analog channel - digital input disabled and reads ‘0’ bit 0 PCFG0: A/D Port Configuration bit - AN0 1 = Pin configured as a digital port 0 = Pin configured as an analog channel - digital input disabled and reads ‘0’
發表於: 2007/2/2 8:47
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c18語法OpenADC()
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新會員
 
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OpenADC( ADC_FOSC_32 & ADC_LEFT_JUST & ADC_0ANA & ADC_16_TAD, ADC_VREFPLUS_VDD & ADC_VREFMINUS_VSS & ADC_CH3 & ADC_INT_OFF,15 ); 這是menu上的ADC設定函數,請問大大最後面那個15, 是什麼的設定值? 謝謝
發表於: 2007/2/1 15:36
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