--- /dev/null
+/**
+ * \file rp_spi.h
+ */
+
+#include <stdint.h> /*uint32_t*/
+
+/**
+ * \brief Struktura pro prichozi data z fpga.
+ */
+struct rpi_in{
+ uint64_t pozice; /*use twice the origin size to avoid underflow when sunstracting offset*/
+ uint16_t ch0, ch1, ch2;
+ int8_t hal1,hal2,hal3; /* bool values */
+ int8_t en1, en2, en3; /*(bool)last read pwm-enable values - !they are changed after reading ! */
+ int8_t shdn1,shdn2,shdn3; /*(bool)last read shutdown values - !they are changed after reading ! */
+ int8_t b54, b53, b52, b51, b50, b49, b48, b47, b46, b45, b44, b43, b42, b41, b40, b39, b38, b37, b36; /*bits for debug*/
+};
+
+/**
+ * \brief Testovaci funkce.
+ */
+extern void transfer(void);
+
+/**
+ * \brief Inicializace pro spi.
+ */
+extern int spi_init(void);
+
+/**
+ * \brief Uzavreni spi.
+ */
+extern void spi_disable(void);
+
+extern struct rpi_in spi_read(uint8_t *);