diff --git a/CS1237气泵参考代码.txt b/CS1237气泵参考代码.txt
new file mode 100644
index 0000000..2c1ea2e
--- /dev/null
+++ b/CS1237气泵参考代码.txt
@@ -0,0 +1,69 @@
+int ndrdy = A4;
+int clck = A5; 
+int pwm = 3;
+
+void setup() {
+    Serial.begin(115200);
+    pinMode(pwm, OUTPUT);
+    
+    while (!Serial) {}
+    digitalWrite(ndrdy, LOW);
+    pinMode(ndrdy, INPUT);
+
+    digitalWrite(clck, LOW);
+    pinMode(clck, OUTPUT);
+
+    while (digitalRead(ndrdy)) {}
+    while (!digitalRead(ndrdy)) {}
+}
+
+long readADC() 
+{
+    if (digitalRead(ndrdy))
+        return -1;
+
+    long result = 0;
+
+    for (int i = 0; i < 24; i++) 
+    {
+        digitalWrite(clck, HIGH);
+        delayMicroseconds(1);
+        int new_bit = digitalRead(ndrdy);
+        digitalWrite(clck, LOW);
+        delayMicroseconds(1);
+        result <<= 1;
+        result |= new_bit;
+    }
+
+    for (int i = 0; i < 3; i++) 
+    {
+        digitalWrite(clck, HIGH);
+        delayMicroseconds(1);      
+        digitalWrite(clck, LOW);
+        delayMicroseconds(1);
+    }
+
+    return result; 
+}
+
+
+void loop() {  
+  long adcValue = readADC();
+  Serial.print("ADC reading: ");
+  Serial.print(adcValue);
+  if (adcValue >= 3400000)
+  {
+    delay(500);
+    analogWrite(pwm,0);
+    Serial.println(" End of Run ");
+    delay(500);
+  }
+  else
+  {
+    if (is_run == true)
+    {
+      analogWrite(pwm,255);
+      delay(500);
+    }
+  }
+}