Rework SPI interfaces

include/sta/spi_interface.hpp

@@ -23,7 +23,7 @@ namespace sta
 		 * @param settings  SPI interface settings
 		 * @param mutex     Mutex object for managing shared access. Pass nullptr for no access control
 		 */
-		SpiInterface(const SpiSettings & settings, Mutex * mutex = nullptr);
+		SpiInterface(Mutex * mutex = nullptr);
 
 
 		/**
@@ -32,6 +32,12 @@ namespace sta
 		 * @param value     8-bit value
 		 */
 		virtual void transfer(uint8_t value) = 0;
+		/**
+		 * @brief Send two bytes of data.
+		 *
+		 * @param value     16-bit value
+		 */
+		virtual void transfer16(uint16_t value) = 0;
 		/**
 		 * @brief Send data from buffer.
 		 *
@@ -47,29 +53,6 @@ namespace sta
 		 * @param size      Number of bytes to transfer
 		 */
 		virtual void transfer(const uint8_t * txBuffer, uint8_t * rxBuffer, size_t size) = 0;
-
-		/**
-		 * @brief Send two bytes of data.
-		 *
-		 * @param value     16-bit value
-		 */
-		virtual void transfer16(uint16_t value) = 0;
-
-		/**
-		 * @brief Send byte value repeatedly.
-		 *
-		 * @param value     8-bit value to repeat
-		 * @param count     Number of repetitions
-		 */
-		virtual void fill(uint8_t value, size_t count) = 0;
-		/**
-		 * @brief Send 32-bit value repeatedly.
-		 *
-		 * @param value     32-bit value to repeat
-		 * @param count     Number of repetitions
-		 */
-		virtual void fill32(uint32_t value, size_t count) = 0;
-
 		/**
 		 * @brief Read incoming data to buffer.
 		 *
@@ -79,12 +62,21 @@ namespace sta
 		virtual void receive(uint8_t * buffer, size_t size) = 0;
 
 
+		/**
+		 * @brief Send byte value repeatedly.
+		 *
+		 * @param value     8-bit value to repeat
+		 * @param count     Number of repetitions
+		 */
+		virtual void fill(uint8_t value, size_t count) = 0;
+
+
 		/**
 		 * @brief Get SPI interface settings.
 		 *
 		 * @return SPI settings
 		 */
-		const SpiSettings & settings() const;
+		virtual const SpiSettings & settings() const = 0;
 
 
 		/**
@@ -101,7 +93,6 @@ namespace sta
 		virtual void release();
 
 	private:
-		SpiSettings settings_;  /** SPI settings */
 		Mutex * mutex_;	        /**< Mutex object */
 	};
 } // namespace sta