Add SPI device interface

src/spi_device.cpp

@@ -0,0 +1,56 @@
+#include <sta/spi_device.hpp>
+
+
+namespace sta
+{
+	SpiDevice::SpiDevice(SpiInterface * intf)
+		: intf_{intf}
+	{}
+
+	void SpiDevice::beginTransmission()
+	{
+		// Acquire SPI access and activate device
+		intf_->acquire();
+		select();
+	}
+
+	void SpiDevice::endTransmission()
+	{
+		// Deactivate device and release SPI access
+		deselect();
+		intf_->release();
+	}
+
+
+	// Forward I/O operations to SPI interface
+
+	void SpiDevice::transfer(uint8_t data)
+	{
+		intf_->transfer(data);
+	}
+
+	void SpiDevice::transfer(const uint8_t * data, size_t size)
+	{
+		intf_->transfer(data, size);
+	}
+
+	void SpiDevice::transfer16(uint16_t data)
+	{
+		intf_->transfer16(data);
+	}
+
+	void SpiDevice::fill(uint8_t value, size_t count)
+	{
+		intf_->fill(value, count);
+	}
+
+	void SpiDevice::fill32(uint32_t value, size_t count)
+	{
+		intf_->fill32(value, count);
+	}
+
+	void SpiDevice::receive(uint8_t * buffer, size_t size)
+	{
+		intf_->receive(buffer, size);
+	}
+} // namespace sta