add some more delays

Author: ladyada

adafruit_pn532.py

@@ -205,9 +205,9 @@ def __init__(self, *, debug=False, reset=None):
             reset.value = True
             time.sleep(0.1)
             reset.value = False
-            time.sleep(0.1)
+            time.sleep(0.5)
             reset.value = True
-            time.sleep(1)
+            time.sleep(0.1)
         try:
             self._wakeup()
             self.get_firmware_version() # first time often fails, try 2ce
@@ -261,6 +261,8 @@ def _write_frame(self, data):
         # Send frame.
         if self.debug:
             print('Write frame: ', [hex(i) for i in frame])
+        else:
+            time.sleep(0.1)
         self._write_data(bytes(frame))
 
     def _read_frame(self, length):
@@ -273,6 +275,8 @@ def _read_frame(self, length):
         response = self._read_data(length+8)
         if self.debug:
             print('Read frame:', [hex(i) for i in response])
+        else:
+            time.sleep(0.1)
         # Swallow all the 0x00 values that preceed 0xFF.
         offset = 0
         while response[offset] == 0x00:
@@ -456,6 +460,8 @@ def _read_data(self, count):
             raise BusyError("No data read from PN532")
         if self.debug:
             print("Reading: ", [hex(i) for i in frame])
+        else:
+            time.sleep(0.1)
         return frame
 
     def _write_data(self, framebytes):
@@ -506,6 +512,8 @@ def _read_data(self, count):
             i2c.readinto(frame)        # ok get the data, plus statusbyte
         if self.debug:
             print("Reading: ", [hex(i) for i in frame[1:]])
+        else:
+            time.sleep(0.1)
         return frame[1:]   # don't return the status byte
 
     def _write_data(self, framebytes):