Question

初学者尝试学习ADC设置，但不幸的是，大多数在线示例都是针对其他pic18模型的，我没有将adc.h定义作为资源。（或者不是C代码。）不想真正用勺子喂答案，但如果有人能提出一些很好的演练，在线资源等等，我真的很感激，谢谢！

我写的这个伪代码的任何帮助都会很棒。可能会有错误...如果我在正确的轨道上没有线索。

//configure port
    //disable pin output driver (TRIS) - same thing as clear?
    //configure pin as analog
//configure adc module
    //set ADC conversion clock
    // configure voltage reference
    //select adc input channel
        //CH0-CH12 of ADCON0
    // select result format
        //select data format using the ADFM bit of the ADCON1 register                                                 
           //select aquisition delay  
    // turn on ADC module
        //enable A/D converter by setting the ADON bit of the ADCON0 register                                                     
//start conversion by setting GODONE bit of ADCON0 register
    //GODONE = 1;

// read ADC result
    //read the ADRESH and ADRESL registers
//clear the adc interrupt flag (optional)

Answer 1

还不完美，但大部分都弄明白了。休息不应该太困难..现在只需要实现中断。

    TRISc = 0x01; // disable tri-state    
    ANSEL = 0xFF;//setting to analog
    ADCON1 = 0x00;//Voltage References Set
    ADCON2 = 0x00;// left justified ADFM, set Acquisition Time and Conversion Clock
    ADCON0 = 0x11;// Analog Channel Select, GODONE set, Enable ADC

    //TODO:interrupt ADIF bit in the PIR1 register
    ADIF = 0;
    ADIE = 1;
    GODONE = 1;
    while(GODONE) {};

    adcValue = ADRESH;
    adcValue <<= 8;
    adcValue |= ADRESL;

    while(1){}

ADC设置为C中的pic18f1xk22

1 个答案: