X-Git-Url: https://git.ayoreis.com/hackapet/Adafruit_Blinka.git/blobdiff_plain/ecba441c03a58ce97b3c1c769cb9c76675abbf7f..7c00bb4d5237d7d46b65b33d62bbefe3381ded67:/src/busio.py

diff --git a/src/busio.py b/src/busio.py
index 9003bab..ddf290d 100755
--- a/src/busio.py
+++ b/src/busio.py
@@ -31,8 +31,8 @@ class I2C(Lockable):
                 self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
                 break
         else:
-            raise NotImplementedError(
-                "No Hardware I2C on (scl,sda)={}\nValid UART ports: {}".format((scl, sda), i2cPorts)
+            raise ValueError(
+                "No Hardware I2C on (scl,sda)={}\nValid I2C ports: {}".format((scl, sda), i2cPorts)
             )
 
     def deinit(self):
@@ -95,7 +95,7 @@ class SPI(Lockable):
                 self._pins = (portSck, portMosi, portMiso)
                 break
         else:
-            raise NotImplementedError(
+            raise ValueError(
                 "No Hardware SPI on (SCLK, MOSI, MISO)={}\nValid SPI ports:{}".
                 format((clock, MOSI, MISO), spiPorts))
 
@@ -159,6 +159,13 @@ class SPI(Lockable):
         self._spi = None
         self._pinIds = None
 
+    @property
+    def frequency(self):
+        try:
+            return self._spi.frequency
+        except AttributeError:
+            raise NotImplementedError("Frequency attribute not implemented for this platform")
+
     def write(self, buf, start=0, end=None):
         return self._spi.write(buf, start, end)
 
@@ -223,7 +230,7 @@ class UART(Lockable):
                 )
                 break
         else:
-            raise NotImplementedError(
+            raise ValueError(
                 "No Hardware UART on (tx,rx)={}\nValid UART ports: {}".format((tx, rx), uartPorts)
             )