Fix typo.

Author: anecdata

adafruit_esp32spi/adafruit_esp32spi.py

@@ -799,7 +799,7 @@ def set_digital_read(self, pin):
         elif resp[0] == 1:
             return True
         else:
-            raise ValueError("_SET_DIGITAL_READ response error", resp_[0])
+            raise ValueError("_SET_DIGITAL_READ response error", resp[0])
 
     def set_analog_read(self, pin, atten=ADC_ATTEN_DB_11):
         """