C++ (Cpp) felica_i2c_open Examples

Example #1

0

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/*
* Description : 
* Input :
* Output :
*/
int felica_i2c_read(unsigned char reg, unsigned char *buf, size_t count)
{
  ssize_t rc = 0;
  mm_segment_t old_fs = get_fs();

  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] felica_i2c_read\n");
  #endif

  set_fs(KERNEL_DS);

	/* dev/i2c-0 device file open */
	rc = felica_i2c_open();
	if (rc)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_open : %d \n",rc);
		return rc;
	}

	/* Set slave address */
	rc = felica_i2c_set_slave_address(I2C_FELICA_SLAVE_ADDRESS);
	if (rc)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_set_slave_address : %d \n",rc);
		return rc;
	}

	/* set register address */
	rc = sys_write(fd, &reg, 1);
	if (rc < 0)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - sys_write : %d \n",rc);
		return rc;
	}
	
	/* read register data */
	rc = sys_read(fd, buf, count);

  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] read data : 0x%02x \n",*buf);
  #endif
  
	if (rc < 0)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - sys_read : %d \n",rc);
		return rc;
	}

	/* release i2c */
	rc = felica_i2c_release();
	if (rc)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_release : %d \n",rc);
		return rc;
	}

	set_fs(old_fs);
	return 0;
}

Example #2

0

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/*
* Description : 
* Input :
* Output :
*/
int felica_i2c_write(unsigned char reg, unsigned char *buf, size_t count)
{
  ssize_t rc = 0;
  unsigned char write_buf[2];
  mm_segment_t old_fs = get_fs();
  
  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] felica_i2c_write\n");
  #endif

  set_fs(KERNEL_DS);

	/* dev/i2c-0 device file open */
	rc = felica_i2c_open();
	if (rc)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_open : %d \n",rc);
		return rc;
	}

	/* set slave address */
	rc = felica_i2c_set_slave_address(I2C_FELICA_SLAVE_ADDRESS);
	if (rc)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_set_slave_address : %d \n",rc);
		return rc;
	}

	/* set register  */	
	memset(write_buf,0x00,2*sizeof(unsigned char));
	write_buf[0] = reg;
	write_buf[1] = *buf;

  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] write_buf[0][1] : 0x%02x 0x%02x \n",write_buf[0],write_buf[1]);
  #endif

	/* write data */    
	rc = sys_write(fd, write_buf, 2);
	if (rc < 0)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - sys_write : %d \n",rc);
		return rc;
	}
	
	/* release i2c */
	rc = felica_i2c_release();
	if (rc)
	{
		FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_release : %d \n",rc);
		return rc;
	}

	set_fs(old_fs);

	return 0;
}

Example #3

0

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/*
* Description :
* Input :
* Output :
*/
int felica_i2c_write(unsigned char reg, unsigned char *buf, size_t count)
{
  ssize_t rc = 0;
  unsigned char write_buf[2];
  mm_segment_t old_fs = get_fs();
  int retry = 10;

  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] felica_i2c_write\n");
  #endif

 // while((I2C_STATUS_NO_USE != get_felica_i2c_status())&&(retry > 0))
  while((I2C_STATUS_FOR_NFC == get_felica_i2c_status())&&(retry > 0))  
  {
    usleep(100);
    retry--;
  }

//  if(I2C_STATUS_NO_USE != get_felica_i2c_status())
  if(I2C_STATUS_FOR_NFC == get_felica_i2c_status())
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - other device(NFC) use i2c abnormally \n");
    goto ERROR;  	
  }

  set_felica_i2c_status(I2C_STATUS_FOR_FELICA);
  
  set_fs(KERNEL_DS);

  /* dev/i2c-0 device file open */
  rc = felica_i2c_open();
  if (rc)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_open : %d \n",rc);
    goto ERROR;
  }

  /* set slave address */
  rc = felica_i2c_set_slave_address(I2C_FELICA_SLAVE_ADDRESS);
  if (rc)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_set_slave_address : %d \n",rc);
    goto ERROR;
  }

  /* set register  */
  memset(write_buf,0x00,2*sizeof(unsigned char));
  write_buf[0] = reg;
  write_buf[1] = *buf;

  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] write_buf[0][1] : 0x%02x 0x%02x \n",write_buf[0],write_buf[1]);
  #endif

  /* write data */
  rc = sys_write(fd, write_buf, 2);
  if (rc < 0)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - sys_write : %d \n",rc);
    goto ERROR;
  }

  /* release i2c */
  rc = felica_i2c_release();
  if (rc)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_release : %d \n",rc);
    goto ERROR;
  }

  set_fs(old_fs);

//  set_felica_i2c_status(I2C_STATUS_NO_USE);
  set_felica_i2c_status(I2C_STATUS_READY);
  
  return 0;

  ERROR:
//    set_felica_i2c_status(I2C_STATUS_NO_USE);
    set_felica_i2c_status(I2C_STATUS_READY);    
    return rc;
}

Example #4

0

Show file

/*
* Description : 
* Input :
* Output :
*/
int felica_i2c_read(unsigned char reg, unsigned char *buf, size_t count)
{
  ssize_t rc = 0;
  mm_segment_t old_fs = get_fs();
  int retry = 10;

  
  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] felica_i2c_read\n");
  #endif

//  while((I2C_STATUS_NO_USE != get_felica_i2c_status())&&(retry > 0))
  while((I2C_STATUS_FOR_NFC == get_felica_i2c_status())&&(retry > 0))
  {
    usleep(100);
    retry--;
  }

//  if(I2C_STATUS_NO_USE != get_felica_i2c_status())
  if(I2C_STATUS_FOR_NFC == get_felica_i2c_status())
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - other device(NFC) use i2c abnormally \n");
    goto ERROR;  	
  }

  set_felica_i2c_status(I2C_STATUS_FOR_FELICA);
  
  set_fs(KERNEL_DS);

  /* dev/i2c-0 device file open */
  rc = felica_i2c_open();
  if (rc)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_open : %d \n",rc);
    goto ERROR;
  }

  /* Set slave address */
  rc = felica_i2c_set_slave_address(I2C_FELICA_SLAVE_ADDRESS);
  if (rc)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_set_slave_address : %d \n",rc);
    goto ERROR;
  }

  /* set register address */
  rc = sys_write(fd, &reg, 1);
  if (rc < 0)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - sys_write : %d \n",rc);
    goto ERROR;
  }

  /* read register data */
  rc = sys_read(fd, buf, count);

  #ifdef FEATURE_DEBUG_LOW
  FELICA_DEBUG_MSG("[FELICA_I2C] read data : 0x%02x \n",*buf);
  #endif
  
  if (rc < 0)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - sys_read : %d \n",rc);
    goto ERROR;
  }

  /* release i2c */
  rc = felica_i2c_release();
  if (rc)
  {
    FELICA_DEBUG_MSG("[FELICA_I2C] ERROR - felica_i2c_release : %d \n",rc);
    goto ERROR;
  }

  set_fs(old_fs);
  
//  set_felica_i2c_status(I2C_STATUS_NO_USE);
  set_felica_i2c_status(I2C_STATUS_READY);
  
  return 0;
  
  ERROR:
//    set_felica_i2c_status(I2C_STATUS_NO_USE);
    set_felica_i2c_status(I2C_STATUS_READY);
    return rc;
}