多通道多路复用器_16路复用器并联

第一个文件，用的 16路的AD转换模块，arduino代码如下：

int s0 = 8;
int s1 = 9;
int s2 = 10;
int s3 = 11;

//Mux in “SIG” pin
int SIG_pin = 0;

void setup(){
pinMode(s0, OUTPUT);
pinMode(s1, OUTPUT);
pinMode(s2, OUTPUT);
pinMode(s3, OUTPUT);

digitalWrite(s0, LOW);
digitalWrite(s1, LOW);
digitalWrite(s2, LOW);
digitalWrite(s3, LOW);

Serial.begin(9600);
}

void loop(){

//Loop through and read all 16 values
//Reports back Value at channel 6 is: 346
for(int i = 0; i < 16; i ++)
{ Serial.print("Value at channel ");
Serial.print(i); Serial.print("is : ");
Serial.println(readMux(i));
delay(1000);
}
}
int readMux(int channel)
{ int controlPin[] = {s0, s1, s2, s3};
int muxChannel[16][4]={ {0,0,0,0}, //channel 0
{1,0,0,0}, //channel 1
{0,1,0,0}, //channel 2
{1,1,0,0}, //channel 3
{0,0,1,0}, //channel 4
{1,0,1,0}, //channel 5
{0,1,1,0}, //channel 6
{1,1,1,0}, //channel 7
{0,0,0,1}, //channel 8
{1,0,0,1}, //channel 9
{0,1,0,1}, //channel 10
{1,1,0,1}, //channel 11
{0,0,1,1}, //channel 12
{1,0,1,1}, //channel 13
{0,1,1,1}, //channel 14
{1,1,1,1} //channel 15
}; //loop through the 4 sig
for(int i = 0; i < 4; i ++){ digitalWrite(controlPin[i], muxChannel[channel][i]); } //read the value at the SIG pin
int val = analogRead(SIG_pin);
//return the value
return val; }