owner-nrf52sdk/nRF5_SDK_17.0.2/components/drivers_nrf/sdio/sdio.h

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#ifndef SDIO_H
#define SDIO_H

/*lint ++flb "Enter library region" */

#include <stdbool.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

/** @file
* @brief 2-wire serial interface driver (compatible with ADNS2080 mouse sensor driver)
*
*
* @defgroup nrf_drivers_sdio SDIO driver
* @{
* @ingroup nrf_drivers
* @brief 2-wire serial interface driver.
*/

/**
 * @brief Function for initializing 2-wire serial interface and trying to handle stuck slaves.
 *
 */
void sdio_init(void);

/**
 * @brief Function for reading a byte over 2-wire serial interface.
 *
 * Developer needs to implement this function in a way that suits the hardware.
 * @param address Register address to read from
 * @return Byte read
 */
uint8_t sdio_read_byte(uint8_t address);

/**
 * @brief Function for reading several bytes over 2-wire serial interface using burst mode.
 *
 * Developer needs to implement this function in a way that suits the hardware.
 * @param target_buffer Buffer location to store read bytes to
 * @param target_buffer_size Bytes allocated for target_buffer
 */
void sdio_read_burst(uint8_t *target_buffer, uint8_t target_buffer_size);

/**
 * @brief Function for writing a byte over 2-wire serial interface.
 *
 * Developer needs to implement this function in a way that suits the hardware.
 * @param address Register address to write to
 * @param data_byte Data byte to write
 */
void sdio_write_byte(uint8_t address, uint8_t data_byte);

/**
 *@}
 **/

/*lint --flb "Leave library region" */

#ifdef __cplusplus
}
#endif

#endif