Petalinux SPI driver running but not connecting

/*
 * SPI testing utility (using spidev driver)
 *
 * Copyright (c) 2007  MontaVista Software, Inc.
 * Copyright (c) 2007  Anton Vorontsov <avorontsov@ru.mvista.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 *
 * Cross-compile with cross-gcc -I/path/to/cross-kernel/include
 */

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

#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

static void pabort(const char *s)
{
 perror(s);
 abort();
}

static const char *device = "/dev/spidev32765.0";
static uint32_t mode;
static uint8_t bits = 8;
static uint32_t speed = 500000;
static uint16_t delay;
static int verbose;

uint8_t default_tx[] = {
 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 0x40, 0x00, 0x00, 0x00, 0x00, 0x95,
 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 0xF0, 0x0D,
};

uint8_t default_rx[ARRAY_SIZE(default_tx)] = {0, };
char *input_tx;

static void hex_dump(const void *src, size_t length, size_t line_size, char *prefix)
{
 int i = 0;
 const unsigned char *address = src;
 const unsigned char *line = address;
 unsigned char c;

 printf("%s | ", prefix);
 while (length-- > 0) {
  printf("%02X ", *address++);
  if (!(++i % line_size) || (length == 0 && i % line_size)) {
   if (length == 0) {
    while (i++ % line_size)
     printf("__ ");
   }
   printf(" | ");  /* right close */
   while (line < address) {
    c = *line++;
    printf("%c", (c < 33 || c == 255) ? 0x2E : c);
   }
   printf("\n");
   if (length > 0)
    printf("%s | ", prefix);
  }
 }
}

/*
 *  Unescape - process hexadecimal escape character
 *      converts shell input "\x23" -> 0x23
 */
static int unescape(char *_dst, char *_src, size_t len)
{
 int ret = 0;
 char *src = _src;
 char *dst = _dst;
 unsigned int ch;

 while (*src) {
  if (*src == '\\' && *(src+1) == 'x') {
   sscanf(src + 2, "%2x", &ch);
   src += 4;
   *dst++ = (unsigned char)ch;
  } else {
   *dst++ = *src++;
  }
  ret++;
 }
 return ret;
}

static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
{
 int ret;

 struct spi_ioc_transfer tr = {
  .tx_buf = (unsigned long)tx,
  .rx_buf = (unsigned long)rx,
  .len = len,
  .delay_usecs = delay,
  .speed_hz = speed,
  .bits_per_word = bits,
 };

 if (mode & SPI_TX_QUAD)
  tr.tx_nbits = 4;
 else if (mode & SPI_TX_DUAL)
  tr.tx_nbits = 2;
 if (mode & SPI_RX_QUAD)
  tr.rx_nbits = 4;
 else if (mode & SPI_RX_DUAL)
  tr.rx_nbits = 2;
 if (!(mode & SPI_LOOP)) {
  if (mode & (SPI_TX_QUAD | SPI_TX_DUAL))
   tr.rx_buf = 0;
  else if (mode & (SPI_RX_QUAD | SPI_RX_DUAL))
   tr.tx_buf = 0;
 }

 ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr);
 if (ret < 1)
                printf(device);
  pabort("can't send spi message");

 if (verbose)
  hex_dump(tx, len, 32, "TX");
 hex_dump(rx, len, 32, "RX");
}

static void print_usage(const char *prog)
{
 printf("Usage: %s [-DsbdlHOLC3]\n", prog);
 puts("  -D --device   device to use (default /dev/spidev1.1)\n"
      "  -s --speed    max speed (Hz)\n"
      "  -d --delay    delay (usec)\n"
      "  -b --bpw      bits per word \n"
      "  -l --loop     loopback\n"
      "  -H --cpha     clock phase\n"
      "  -O --cpol     clock polarity\n"
      "  -L --lsb      least significant bit first\n"
      "  -C --cs-high  chip select active high\n"
      "  -3 --3wire    SI/SO signals shared\n"
      "  -v --verbose  Verbose (show tx buffer)\n"
      "  -p            Send data (e.g. \"1234\\xde\\xad\")\n"
      "  -N --no-cs    no chip select\n"
      "  -R --ready    slave pulls low to pause\n"
      "  -2 --dual     dual transfer\n"
      "  -4 --quad     quad transfer\n");
 exit(1);
}

static void parse_opts(int argc, char *argv[])
{
 while (1) {
  static const struct option lopts[] = {
   { "device",  1, 0, 'D' },
   { "speed",   1, 0, 's' },
   { "delay",   1, 0, 'd' },
   { "bpw",     1, 0, 'b' },
   { "loop",    0, 0, 'l' },
   { "cpha",    0, 0, 'H' },
   { "cpol",    0, 0, 'O' },
   { "lsb",     0, 0, 'L' },
   { "cs-high", 0, 0, 'C' },
   { "3wire",   0, 0, '3' },
   { "no-cs",   0, 0, 'N' },
   { "ready",   0, 0, 'R' },
   { "dual",    0, 0, '2' },
   { "verbose", 0, 0, 'v' },
   { "quad",    0, 0, '4' },
   { NULL, 0, 0, 0 },
  };
  int c;

  c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24p:v", lopts, NULL);

  if (c == -1)
   break;

  switch (c) {
  case 'D':
   device = optarg;
   break;
  case 's':
   speed = atoi(optarg);
   break;
  case 'd':
   delay = atoi(optarg);
   break;
  case 'b':
   bits = atoi(optarg);
   break;
  case 'l':
   mode |= SPI_LOOP;
   break;
  case 'H':
   mode |= SPI_CPHA;
   break;
  case 'O':
   mode |= SPI_CPOL;
   break;
  case 'L':
   mode |= SPI_LSB_FIRST;
   break;
  case 'C':
   mode |= SPI_CS_HIGH;
   break;
  case '3':
   mode |= SPI_3WIRE;
   break;
  case 'N':
   mode |= SPI_NO_CS;
   break;
  case 'v':
   verbose = 1;
   break;
  case 'R':
   mode |= SPI_READY;
   break;
  case 'p':
   input_tx = optarg;
   break;
  case '2':
   mode |= SPI_TX_DUAL;
   break;
  case '4':
   mode |= SPI_TX_QUAD;
   break;
  default:
   print_usage(argv[0]);
   break;
  }
 }
 if (mode & SPI_LOOP) {
  if (mode & SPI_TX_DUAL)
   mode |= SPI_RX_DUAL;
  if (mode & SPI_TX_QUAD)
   mode |= SPI_RX_QUAD;
 }
}

int main(int argc, char *argv[])
{
 int ret = 0;
 int fd;
 uint8_t *tx;
 uint8_t *rx;
 int size;

 parse_opts(argc, argv);

 fd = open(device, O_RDWR);
 if (fd < 0)
  pabort("can't open device");

 /*
  * spi mode
  */
 ret = ioctl(fd, SPI_IOC_WR_MODE32, &mode);
 if (ret == -1)
  pabort("can't set spi mode");

 ret = ioctl(fd, SPI_IOC_RD_MODE32, &mode);
 if (ret == -1)
  pabort("can't get spi mode");

 /*
  * bits per word
  */
 ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, &bits);
 if (ret == -1)
  pabort("can't set bits per word");

 ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits);
 if (ret == -1)
  pabort("can't get bits per word");

 /*
  * max speed hz
  */
 ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed);
 if (ret == -1)
  pabort("can't set max speed hz");

 ret = ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed);
 if (ret == -1)
  pabort("can't get max speed hz");

 printf("spi mode: 0x%x\n", mode);
 printf("bits per word: %d\n", bits);
 printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000);

 if (input_tx) {
  size = strlen(input_tx+1);
  tx = malloc(size);
  rx = malloc(size);
  size = unescape((char *)tx, input_tx, size);
  transfer(fd, tx, rx, size);
  free(rx);
  free(tx);
 } else {
  transfer(fd, default_tx, default_rx, sizeof(default_tx));
 }

 close(fd);

 return ret;
}