fix(spi): initialize bus on begin

Author: cumin777

libraries/SPI/src/SPI.cpp

@@ -13,9 +13,9 @@
 
 SPIClass SPI;
 
-void SPIClass::configSpi(const SPISettings &settings)
+void SPIClass::configSpi(const SPISettings &settings, bool force)
 {
-  if (_spiSettings != settings) {
+  if (force || _spiSettings != settings) {
     _spiSettings = settings;
 
     uint32_t  clock   = settings.getClockFreq();
@@ -79,7 +79,7 @@ void SPIClass::begin(SPIBusMode busMode)
     SPI_MODE0,
     busMode
   );
-  configSpi(defaultSettings);
+  configSpi(defaultSettings, true);
 }
 
 /**

libraries/SPI/src/SPI.h

@@ -135,7 +135,7 @@ class SPIClass : public HardwareSPI {
     /* Current SPISettings */
     SPISettings   _spiSettings = SPISettings();
 
-    void configSpi(const SPISettings &settings);
+    void configSpi(const SPISettings &settings, bool force = false);
 };
 
 extern SPIClass SPI;