diff --git a/HIL/esp_dut.py b/HIL/esp_dut.py
index c364983..3ec8668 100644
--- a/HIL/esp_dut.py
+++ b/HIL/esp_dut.py
@@ -74,10 +74,10 @@ class EspDut:
         self.pigpio.set_mode(self.powerPin, pigpio.OUTPUT)
 
     def begin(self):
-        self.pigpio.pi.write(self.powerPin, 1)
+        self.pigpio.write(self.powerPin, 1)
 
     def stop(self):
-        self.pigpio.pi.write(self.powerPin, 0)
+        self.pigpio.write(self.powerPin, 0)
 
     def writeFlash(self, bin_dir):
         logger.info("write flash")