index 8b7da94..296a752 100644@@ -44,9 +44,13 @@ void SdSpiArduinoDriver::end() { m_spi->end(); } uint8_t SdSpiArduinoDriver::receive() { return m_spi->transfer(0XFF); } //------------------------------------------------------------------------------ uint8_t SdSpiArduinoDriver::receive(uint8_t* buf, size_t count) {+#if defined(STM32_CORE_VERSION) && STM32_CORE_VERSION > 0x02070000+  m_spi->transfer(NULL, buf, count);+#else   // Must send 0XFF - SD looks at send data for command.   memset(buf, 0XFF, count);   m_spi->transfer(buf, count);+#endif   return 0; } //------------------------------------------------------------------------------@@ -57,9 +61,17 @@ void SdSpiArduinoDriver::send(const uint8_t* buf, size_t count) {   if (count > 512) {     return;   }+#if defined(STM32_CORE_VERSION)+#if STM32_CORE_VERSION > 0x02070000+  m_spi->transfer(buf, NULL, count);+#elif STM32_CORE_VERSION == 0x02070000+  #error "STM32 core version 2.7.0 is not compatible due to SPI API changes."+#endif+#else   // Not easy to avoid receive so use tmp RX buffer.   uint8_t rxBuf[512];   // Discard const - STM32 not const correct.   m_spi->transfer(const_cast<uint8_t*>(buf), rxBuf, count);+#endif } #endif  // defined(SD_USE_CUSTOM_SPI) && defined(STM32_CORE_VERSION)