File syn_port_spi.h¶

File List > port > syn_port_spi.h
#ifndef SYN_PORT_SPI_H
#define SYN_PORT_SPI_H

#include "../common/syn_defs.h"

#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

/* ── SPI mode (CPOL/CPHA) ───────────────────────────────────────────────── */

typedef enum {
    SYN_SPI_MODE_0 = 0, 
    SYN_SPI_MODE_1 = 1, 
    SYN_SPI_MODE_2 = 2, 
    SYN_SPI_MODE_3 = 3, 
} SYN_SPI_Mode;

/* ── SPI configuration ──────────────────────────────────────────────────── */

typedef struct {
    uint8_t bus;       
    uint32_t clock_hz; 
    SYN_SPI_Mode mode; 
    uint8_t bit_order; 
} SYN_SPI_Config;

/* ── Port functions (user implements) ───────────────────────────────────── */

SYN_Status syn_port_spi_init(const SYN_SPI_Config *cfg);

SYN_Status syn_port_spi_deinit(uint8_t bus);

SYN_Status syn_port_spi_transfer(uint8_t bus, const uint8_t *tx_buf, uint8_t *rx_buf, size_t len);

SYN_Status syn_port_spi_cs_assert(uint8_t bus, SYN_GPIO_Pin cs_pin);

SYN_Status syn_port_spi_cs_deassert(uint8_t bus, SYN_GPIO_Pin cs_pin);

#ifdef __cplusplus
}
#endif

#endif /* SYN_PORT_SPI_H */