text: /****************************************************************************
  *
  * Copyright (c) 2014 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in
  * the documentation and/or other materials provided with the
  * distribution.
  * 3. Neither the name PX4 nor the names of its contributors may be
  * used to endorse or promote products derived from this software
  * without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
  ****************************************************************************/
  
  /**
  * @file ver.c
  *
  * Version command, unifies way of showing versions of HW, SW, Build, GCC
  * In case you want to add new version just extend version_main function
  *
  * @author Vladimir Kulla <ufon@kullaonline.net>
  */
  
  #include <stdio.h>
  #include <string.h>
  #include <version/version.h>
  #include <systemlib/err.h>
  #include <systemlib/mcu_version.h>
  
  /* string constants for version commands */
  static const char sz_ver_hw_str[] 	= "hw";
  static const char sz_ver_hwcmp_str[] = "hwcmp";
  static const char sz_ver_git_str[] 	= "git";
  static const char sz_ver_bdate_str[] = "bdate";
  static const char sz_ver_gcc_str[] 	= "gcc";
  static const char sz_ver_all_str[] 	= "all";
  static const char mcu_ver_str[]		= "mcu";
  static const char mcu_uid_str[]		= "uid";
  
  static void usage(const char *reason)
  {
  	if (reason != NULL) {
  		printf("%s\n", reason);
  	}
  
  	printf("usage: ver {hw|hwcmp|git|bdate|gcc|all|mcu|uid}\n\n");
  }
  
  __EXPORT int ver_main(int argc, char *argv[]);
  
  int ver_main(int argc, char *argv[])
  {
  	/* defaults to an error */
  	int ret = 1;
  
  	/* first check if there are at least 2 params */
  	if (argc >= 2) {
  		if (argv[1] != NULL) {
  
  			if (!strncmp(argv[1], sz_ver_hwcmp_str, sizeof(sz_ver_hwcmp_str))) {
  				if (argc >= 3 && argv[2] != NULL) {
  					/* compare 3rd parameter with HW_ARCH string, in case of match, return 0 */
  					ret = strncmp(HW_ARCH, argv[2], strlen(HW_ARCH));
  
  					if (ret == 0) {
  						printf("ver hwcmp match: %s\n", HW_ARCH);
  					}
  					return ret;
  
  				} else {
  					errx(1, "Not enough arguments, try 'ver hwcmp PX4FMU_V2'");
  				}
  			}
  
  			/* check if we want to show all */
  			bool show_all = !strncmp(argv[1], sz_ver_all_str, sizeof(sz_ver_all_str));
  
  			if (show_all || !strncmp(argv[1], sz_ver_hw_str, sizeof(sz_ver_hw_str))) {
  				printf("HW arch: %s\n", HW_ARCH);
  				ret = 0;
  
  			}
  
  			if (show_all || !strncmp(argv[1], sz_ver_git_str, sizeof(sz_ver_git_str))) {
  				printf("FW git-hash: %s\n", GIT_VERSION);
  				ret = 0;
  
  			}
  
  			if (show_all || !strncmp(argv[1], sz_ver_bdate_str, sizeof(sz_ver_bdate_str))) {
  				printf("Build datetime: %s %s\n", __DATE__, __TIME__);
  				ret = 0;
  
  			}
  
  			if (show_all || !strncmp(argv[1], sz_ver_gcc_str, sizeof(sz_ver_gcc_str))) {
  				printf("Toolchain: %s\n", __VERSION__);
  				ret = 0;
  
  			}
  
  			if (show_all || !strncmp(argv[1], mcu_ver_str, sizeof(mcu_ver_str))) {
  
  				char rev;
  				char* revstr;
  
  				int chip_version = mcu_version(&rev, &revstr);
  
  				if (chip_version < 0) {
  					printf("UNKNOWN MCU\n");
  
  				} else {
  					printf("MCU: %s, rev. %c\n", revstr, rev);
  
  					if (chip_version < MCU_REV_STM32F4_REV_3) {
  						printf("\nWARNING   WARNING   WARNING!\n"
  							"Revision %c has a silicon errata\n"
  							"This device can only utilize a maximum of 1MB flash safely!\n"
  							"http://px4.io/help/errata\n\n", rev);
  					}
  				}
  
  				ret = 0;
  			}
  
  			if (show_all || !strncmp(argv[1], mcu_uid_str, sizeof(mcu_uid_str))) {
  				uint32_t uid[3];
  
  				mcu_unique_id(uid);
  
  				printf("UID: %X:%X:%X \n",uid[0],uid[1],uid[2]);
  
  				ret = 0;
  			}
  
  
  			if (ret == 1) {
  				errx(1, "unknown command.\n");
  			}
  
  		} else {
  			usage("Error, input parameter NULL.\n");
  		}
  
  	} else {
  		usage("Error, not enough parameters.");
  	}
  
  	return ret;
  }
  