tq_spi.h

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#ifndef TQ_SPI_H
#define TQ_SPI_H

#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <linux/spi/spidev.h>
#include <sys/ioctl.h>

static unsigned int mode = 0x0;
static unsigned char bits = 8;      //8位
static unsigned int speed = 500000; //500kHz
#ifdef __cplusplus
extern "C"
{
#endif

    int set_spi_mode(int fd, unsigned short mode);
    int set_spi_bits_per_word(int fd, unsigned short bits);
    int set_spi_max_transfer_speed(int fd, unsigned int speed);
    int spi_message_transfer(int fd, unsigned char *sendBuf, int send_len, unsigned char *recvBuf, int recv_len);
    int spi_message_send(int fd, unsigned char *sendBuf, int len);
#ifdef __cplusplus
}
#endif
#endif