diff --git a/cores/arduino/ard_sup/analog/ap3_analog.cpp b/cores/arduino/ard_sup/analog/ap3_analog.cpp
index a940677c..95936671 100644
--- a/cores/arduino/ard_sup/analog/ap3_analog.cpp
+++ b/cores/arduino/ard_sup/analog/ap3_analog.cpp
@@ -125,6 +125,12 @@ uint8_t _servoWriteBits = 8;  // 8-bit by default for writes
 
 uint16_t analogRead(uint8_t pinNumber)
 {
+    static bool ap3_adc_initialized = false;
+    if(!ap3_adc_initialized){
+        ap3_adc_setup();
+        ap3_adc_initialized = true;
+    }
+
     uint32_t ui32IntMask;
     am_hal_adc_sample_t Sample;
     uint32_t ui32NumSamples = 1;
diff --git a/cores/arduino/ard_sup/main.cpp b/cores/arduino/ard_sup/main.cpp
index 869f9088..1464324d 100644
--- a/cores/arduino/ard_sup/main.cpp
+++ b/cores/arduino/ard_sup/main.cpp
@@ -21,7 +21,7 @@ extern "C" int main(void)
 
   ap3_variant_init();
 
-  ap3_adc_setup();
+  // ap3_adc_setup();
 
   setup();
   for (;;)