// #################################################################################################
// # << NEORV32: neorv32_spi.h - Serial Peripheral Interface Controller (SPI) HW Driver >>         #
// # ********************************************************************************************* #
// # BSD 3-Clause License                                                                          #
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// # Copyright (c) 2021, Stephan Nolting. All rights reserved.                                     #
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// # The NEORV32 Processor - https://github.com/stnolting/neorv32              (c) Stephan Nolting #
// #################################################################################################


/**********************************************************************//**
 * @file neorv32_spi.h
 * @author Stephan Nolting
 * @brief Serial peripheral interface controller (SPI) HW driver header file.
 *
 * @note These functions should only be used if the SPI unit was synthesized (IO_SPI_EN = true).
 **************************************************************************/

#ifndef neorv32_spi_h
#define neorv32_spi_h

// prototypes
int neorv32_spi_available(void);
void neorv32_spi_setup(uint8_t prsc, uint8_t clk_phase, uint8_t clk_polarity, uint8_t data_size);
void neorv32_spi_disable(void);
void neorv32_spi_enable(void);
void neorv32_spi_cs_en(uint8_t cs);
void neorv32_spi_cs_dis(uint8_t cs);
uint32_t neorv32_spi_trans(uint32_t tx_data);
void neorv32_spi_put_nonblocking(uint32_t tx_data);
uint32_t neorv32_spi_get_nonblocking(void);
int neorv32_spi_busy(void);

#endif // neorv32_spi_h