moved setChipSelect() in front of beginTransactionWithAssertingCS()

This is a more logical order, as beginTransactionWithAssertingCS() and
endTransactionWithDeassertingCS() both call it.

Author: eringerli

Adafruit_SPIDevice.cpp

@@ -282,6 +282,16 @@ void Adafruit_SPIDevice::endTransaction(void) {
   }
 }
 
+/*!
+ *    @brief  Assert/Deassert the CS pin if it is defined
+ *    @param  value The state the CS is set to
+ */
+void Adafruit_SPIDevice::setChipSelect(int value) {
+  if (_cs != -1) {
+    digitalWrite(_cs, value);
+  }
+}
+
 /*!
  *    @brief  Write a buffer or two to the SPI device, with transaction
  * management.
@@ -510,14 +520,4 @@ bool Adafruit_SPIDevice::write_and_read(uint8_t *buffer, size_t len) {
   return true;
 }
 
-/*!
- *    @brief  Assert/Deassert the CS pin if it is defined
- *    @param  value The state the CS is set to
- */
-void Adafruit_SPIDevice::setChipSelect(int value) {
-  if (_cs == -1)
-    return;
-  digitalWrite(_cs, value);
-}
-
 #endif // SPI exists