change timeout to retry count in _wait_spi_char

Author: mikejc58

adafruit_esp32spi/adafruit_esp32spi.py

@@ -260,9 +260,8 @@ def _read_bytes(self, spi, buffer, start=0, end=None):
             print("\t\tRead:", [hex(i) for i in buffer])
 
     def _wait_spi_char(self, spi, desired):
-        """Read a byte with a time-out, and if we get it, check that its what we expect"""
-        times = time.monotonic()
-        while (time.monotonic() - times) < 0.1:
+        """Read a byte with a retry loop, and if we get it, check that its what we expect"""
+        for _ in range(50):
             r = self._read_byte(spi)
             if r == _ERR_CMD:
                 raise RuntimeError("Error response to command")