Reshuffle file structure

Firmware/lib/soes/hal/arduino-lan9252/spi.cpp

@@ -0,0 +1,66 @@
+#include "spi.hpp"
+// #include <Arduino.h>
+#include <SPI.h>
+
+
+char SCS = ESC_GPIO_Pin_CS;
+
+
+void spi_setup(void)
+{
+  SPI.begin();    
+  pinMode(SCS, OUTPUT);   
+  spi_unselect(0);
+  delay(100);     
+  SPI.beginTransaction(SPISettings(SPIX_ESC_SPEED, MSBFIRST, SPI_MODE0)); 
+
+}
+
+void spi_select (int8_t board)
+{
+    // Soft CSN
+    #if SCS_ACTIVE_POLARITY == SCS_LOW
+    digitalWrite(SCS, LOW);
+    #endif
+}
+
+void spi_unselect (int8_t board)
+{
+    // Soft CSN
+    #if SCS_ACTIVE_POLARITY == SCS_LOW
+    digitalWrite(SCS, HIGH);
+    #endif
+}
+
+inline static uint8_t spi_transfer_byte(uint8_t byte)
+{
+    return SPI.transfer(byte);
+    // AVR will need handling last byte transfer difference,
+    // but then again they pobably wont even fit EtherCAT stack in RAM
+    // so no need to care for now
+}
+
+void write (int8_t board, uint8_t *data, uint8_t size)
+{
+    for(int i = 0; i < size; ++i)
+    {
+        spi_transfer_byte(data[i]);
+    }
+}
+
+void read (int8_t board, uint8_t *result, uint8_t size)
+{
+	for(int i = 0; i < size; ++i)
+    {
+        result[i] = spi_transfer_byte(DUMMY_BYTE);
+    }
+}
+
+
+void spi_bidirectionally_transfer (int8_t board, uint8_t *result, uint8_t *data, uint8_t size)
+{
+	for(int i = 0; i < size; ++i)
+    {
+        result[i] = spi_transfer_byte(data[i]);
+    }
+}