Added SPI transaction settings for STM32

src/SPIFlashIO.cpp

@@ -165,6 +165,14 @@
      #if defined ENABLEZERODMA
        dma_init();
      #endif
+   #elif defined (ARCH_STM32)
+     #ifdef SPI_HAS_TRANSACTION
+       _spi->beginTransaction(_settings);
+     #else
+       _spi->setClockDivider(SPI_CLOCK_DIV_4);
+       _spi->setDataMode(SPI_MODE0);
+       _spi->setBitOrder(MSBFIRST);
+     #endif
    #else
      #if defined (ARDUINO_ARCH_AVR)
        //save current SPI settings
@@ -183,6 +191,23 @@
    return true;
  }
 
+uint16_t _transfer16Flash(uint16_t data)
+{
+  uint16_t retVal = 0;
+  // if endianness of both sides fits together
+  // SPI.transfer((uint8_t*)&data, (uint8_t*)&retVal, sizeof(data), NULL);
+
+  // MSB before LSB
+  retVal |= SPI.transfer(data >> 8) << 8; 
+  retVal |= SPI.transfer(data & 0x00FF);
+
+  // LSB before MSB
+  // retVal |= SPI.transfer(data & 0x00FF);
+  // retVal |= SPI.transfer(data >> 8) << 8; 
+
+  return retVal;
+}
+
  //Initiates SPI operation - but data is not transferred yet. Always call _prep() before this function (especially when it involves writing or reading to/from an address)
  bool SPIFlash::_beginSPI(uint8_t opcode) {
    if (!SPIBusState) {
@@ -252,8 +277,10 @@
  uint16_t SPIFlash::_nextInt(uint16_t data) {
  #if defined (ARDUINO_ARCH_SAMD)
    return _spi->transfer16(data);
+#elif PLATFORM_ID == PLATFORM_BORON
+  return _transfer16Flash(data);
  #else
-   return SPI.transfer16(data);
+   return _transfer16(data);
  #endif
  }
 

src/SPIFramIO.cpp

@@ -192,10 +192,28 @@
  #endif
  }
 
+uint16_t _transfer16Fram(uint16_t data)
+{
+  uint16_t retVal = 0;
+  // if endianness of both sides fits together
+  // SPI.transfer((uint8_t*)&data, (uint8_t*)&retVal, sizeof(data), NULL);
+
+  // MSB before LSB
+  retVal |= SPI.transfer(data >> 8) << 8; 
+  retVal |= SPI.transfer(data & 0x00FF);
+
+  // LSB before MSB
+  // retVal |= SPI.transfer(data & 0x00FF);
+  // retVal |= SPI.transfer(data >> 8) << 8; 
+
+  return retVal;
+}
  //Reads/Writes next int. Call 'n' times to read/write 'n' number of integers. Should be called after _beginSPI()
  uint16_t SPIFram::_nextInt(uint16_t data) {
  #if defined (ARDUINO_ARCH_SAMD)
    return _spi->transfer16(data);
+#elif PLATFORM_ID == PLATFORM_BORON
+  return _transfer16Fram(data);
  #else
    return SPI.transfer16(data);
  #endif

src/SPIMemory.h

@@ -110,6 +110,8 @@
 #if defined (ARDUINO_ARCH_SAM) || defined (ARDUINO_ARCH_SAMD) || defined (ARDUINO_ARCH_ESP8266) || defined (SIMBLEE) || defined (ARDUINO_ARCH_ESP32) || defined (BOARD_RTL8195A) || defined(ARCH_STM32) || defined(ESP32) || defined(NRF52)
 // RTL8195A included - @boseji <salearj@hotmail.com> 02.03.17
   #define _delay_us(us) delayMicroseconds(us)
+#elif PLATFORM_ID == PLATFORM_BORON
+  #define _delay_us(us) delayMicroseconds(us)
 #else
   #include <util/delay.h>
 #endif