自制植物生长灯

第3步编写代码

大家可以参考我的代码。

在C源程序中，14400（14400秒相当于4小时）指的是自动开灯的时间，你可以修改这个时间。

#include <avr/io.h>  
#include "global.h"  
#include <util/delay.h>  
    
int main(){  
    DDRA = 0x04;  
    
    PORTA = 0x00;  
    
    
    ADCSR |= (1 << ADPS2) | (1 << ADPS1) | (1 << ADPS0); // Set ADC prescalar to 128 - 125KHz sample rate @ 16MHz  
    ADMUX |= (1 << ADLAR); // Left adjust ADC result to allow easy 8 bit reading   
    
    ADMUX |= (1 << MUX0);  
    
    ADCSR |= (1 << ADFR);  // Set ADC to Free-Running Mode  
    ADCSR |= (1 << ADEN);  // Enable ADC  
    ADCSR |= (1 << ADSC);  // Start A2D Conversions  
    
    unsigned char sensor = 0;  
    unsigned short int sekund = 14400;  
    
    while(1){  
        ADCSR |= (1 << ADSC);  // Start A2D Conversions  
        sensor = ADCH;  
        //PORTB = sensor;  
    
        if(sensor > 160 && sekund){  
            PORTA=0x04;  
            sekund--;  
        } else {  
            PORTA=0x00;  
            if(sensor <= 160){  
                sekund = 14400;  
            }  
        }   
    
        _delay_ms(1000);  
    
    }  
    
}

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:100040001D92A036B107E1F702D02AC0D9CF84E0D3  
:100050008ABB1BBA86B1876086B93D9A389A359AB1  
:10006000379A369A20E438E364E049E150E0369A62  
:1000700085B1813A38F02115310521F06BBB215053  
:10008000304005C01BBA813A10F420E438E380E127  
:1000900097E2E42FF52F3197F1F70197D1F7E7CFEA  
:0400A000F894FFCF02  
:00000001FF