disable all interrupts while SPI transfer

Author: nerdyscout

lib/MCP3x6x/MCP3x6x.cpp

@@ -79,10 +79,12 @@ void MCP3x6x::_reverse_array(uint8_t *array, size_t size) {
 
 MCP3x6x::status_t MCP3x6x::_transfer(uint8_t *data, uint8_t addr, size_t size) {
   _spi->beginTransaction(SPISettings(MCP3x6x_SPI_SPEED, MCP3x6x_SPI_ORDER, MCP3x6x_SPI_MODE));
+  noInterrupts();
   digitalWrite(_pinCS, LOW);
   _status.raw = _spi->transfer(addr);
   _spi->transfer(data, size);
   digitalWrite(_pinCS, HIGH);
+  interrupts();
   _spi->endTransaction();
   return _status;
 }