AT&T IoT / Mbed OS ATT_AWS_IoT_demo Featured

Demo application for using the AT&T IoT Starter Kit Powered by AWS.

Dependencies:   SDFileSystem

Fork of ATT_AWS_IoT_demo by Anthony Phillips

IoT Starter Kit Powered by AWS Demo

This program demonstrates the AT&T IoT Starter Kit sending data directly into AWS IoT. It's explained and used in the Getting Started with the IoT Starter Kit Powered by AWS on starterkit.att.com.

What's required

  • AT&T IoT LTE Add-on (also known as the Cellular Shield)
  • NXP K64F - for programming
  • microSD card - used to store your AWS security credentials
  • AWS account
  • Python, locally installed

If you don't already have an IoT Starter Kit, you can purchase a kit here. The IoT Starter Kit Powered by AWS includes the LTE cellular shield, K64F, and a microSD card.

AWS_openssl/aws_iot_src/utils/aws_iot_json_utils.cpp@27:2f486c766854, 2017-02-07 (annotated)

Committer:
rfinn
Date:
Tue Feb 07 16:18:57 2017 +0000
Revision:
27:2f486c766854
Parent:
15:6f2798e45099 
changed SDFileSystem library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ampembeng 15:6f2798e45099 1 /*
ampembeng 15:6f2798e45099 2 * Copyright 2010-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
ampembeng 15:6f2798e45099 3 *
ampembeng 15:6f2798e45099 4 * Licensed under the Apache License, Version 2.0 (the "License").
ampembeng 15:6f2798e45099 5 * You may not use this file except in compliance with the License.
ampembeng 15:6f2798e45099 6 * A copy of the License is located at
ampembeng 15:6f2798e45099 7 *
ampembeng 15:6f2798e45099 8 * http://aws.amazon.com/apache2.0
ampembeng 15:6f2798e45099 9 *
ampembeng 15:6f2798e45099 10 * or in the "license" file accompanying this file. This file is distributed
ampembeng 15:6f2798e45099 11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
ampembeng 15:6f2798e45099 12 * express or implied. See the License for the specific language governing
ampembeng 15:6f2798e45099 13 * permissions and limitations under the License.
ampembeng 15:6f2798e45099 14 */
ampembeng 15:6f2798e45099 15
ampembeng 15:6f2798e45099 16 /**
ampembeng 15:6f2798e45099 17 * @file aws_json_utils.c
ampembeng 15:6f2798e45099 18 * @brief Utilities for manipulating JSON
ampembeng 15:6f2798e45099 19 *
ampembeng 15:6f2798e45099 20 * json_utils provides JSON parsing utilities for use with the IoT SDK.
ampembeng 15:6f2798e45099 21 * Underlying JSON parsing relies on the Jasmine JSON parser.
ampembeng 15:6f2798e45099 22 *
ampembeng 15:6f2798e45099 23 */
ampembeng 15:6f2798e45099 24
ampembeng 15:6f2798e45099 25 #include "aws_iot_json_utils.h"
ampembeng 15:6f2798e45099 26
ampembeng 15:6f2798e45099 27 #include <stdio.h>
ampembeng 15:6f2798e45099 28 #include <stdint.h>
ampembeng 15:6f2798e45099 29 #include <inttypes.h>
ampembeng 15:6f2798e45099 30 #include <string.h>
ampembeng 15:6f2798e45099 31 #include "aws_iot_log.h"
ampembeng 15:6f2798e45099 32
ampembeng 15:6f2798e45099 33 int8_t jsoneq(const char *json, jsmntok_t *tok, const char *s) {
ampembeng 15:6f2798e45099 34 if (tok->type == JSMN_STRING) {
ampembeng 15:6f2798e45099 35 if ((int) strlen(s) == tok->end - tok->start) {
ampembeng 15:6f2798e45099 36 if (strncmp(json + tok->start, s, tok->end - tok->start) == 0) {
ampembeng 15:6f2798e45099 37 return 0;
ampembeng 15:6f2798e45099 38 }
ampembeng 15:6f2798e45099 39 }
ampembeng 15:6f2798e45099 40 }
ampembeng 15:6f2798e45099 41 return -1;
ampembeng 15:6f2798e45099 42 }
ampembeng 15:6f2798e45099 43
ampembeng 15:6f2798e45099 44 IoT_Error_t parseUnsignedInteger32Value(uint32_t *i, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 45 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 46 WARN("Token was not an integer");
ampembeng 15:6f2798e45099 47 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 48 }
ampembeng 15:6f2798e45099 49
ampembeng 15:6f2798e45099 50 //if (1 != sscanf(jsonString + token->start, "%"PRIu32, i)) {
ampembeng 15:6f2798e45099 51 if (1 != sscanf(jsonString + token->start, "%lu", i)) {
ampembeng 15:6f2798e45099 52 WARN("Token was not an integer.");
ampembeng 15:6f2798e45099 53 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 54 }
ampembeng 15:6f2798e45099 55
ampembeng 15:6f2798e45099 56 return NONE_ERROR;
ampembeng 15:6f2798e45099 57 }
ampembeng 15:6f2798e45099 58
ampembeng 15:6f2798e45099 59 IoT_Error_t parseUnsignedInteger16Value(uint16_t *i, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 60 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 61 WARN("Token was not an integer");
ampembeng 15:6f2798e45099 62 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 63 }
ampembeng 15:6f2798e45099 64
ampembeng 15:6f2798e45099 65 //if (1 != sscanf(jsonString + token->start, "%"PRIu16, i)) {
ampembeng 15:6f2798e45099 66 if (1 != sscanf(jsonString + token->start, "%u", i)) {
ampembeng 15:6f2798e45099 67 WARN("Token was not an integer.");
ampembeng 15:6f2798e45099 68 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 69 }
ampembeng 15:6f2798e45099 70
ampembeng 15:6f2798e45099 71 return NONE_ERROR;
ampembeng 15:6f2798e45099 72 }
ampembeng 15:6f2798e45099 73
ampembeng 15:6f2798e45099 74 IoT_Error_t parseUnsignedInteger8Value(uint8_t *i, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 75 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 76 WARN("Token was not an integer");
ampembeng 15:6f2798e45099 77 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 78 }
ampembeng 15:6f2798e45099 79
ampembeng 15:6f2798e45099 80 //if (1 != sscanf(jsonString + token->start, "%"PRIu8, i)) {
ampembeng 15:6f2798e45099 81 if (1 != sscanf(jsonString + token->start, "%u", i)) {
ampembeng 15:6f2798e45099 82 WARN("Token was not an integer.");
ampembeng 15:6f2798e45099 83 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 84 }
ampembeng 15:6f2798e45099 85
ampembeng 15:6f2798e45099 86 return NONE_ERROR;
ampembeng 15:6f2798e45099 87 }
ampembeng 15:6f2798e45099 88
ampembeng 15:6f2798e45099 89 IoT_Error_t parseInteger32Value(int32_t *i, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 90 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 91 WARN("Token was not an integer");
ampembeng 15:6f2798e45099 92 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 93 }
ampembeng 15:6f2798e45099 94
ampembeng 15:6f2798e45099 95 //if (1 != sscanf(jsonString + token->start, "%"PRIi32, i)) {
ampembeng 15:6f2798e45099 96 if (1 != sscanf(jsonString + token->start, "%li", i)) {
ampembeng 15:6f2798e45099 97 WARN("Token was not an integer.");
ampembeng 15:6f2798e45099 98 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 99 }
ampembeng 15:6f2798e45099 100
ampembeng 15:6f2798e45099 101 return NONE_ERROR;
ampembeng 15:6f2798e45099 102 }
ampembeng 15:6f2798e45099 103
ampembeng 15:6f2798e45099 104 IoT_Error_t parseInteger16Value(int16_t *i, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 105 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 106 WARN("Token was not an integer");
ampembeng 15:6f2798e45099 107 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 108 }
ampembeng 15:6f2798e45099 109
ampembeng 15:6f2798e45099 110 //if (1 != sscanf(jsonString + token->start, "%"PRIi16, i)) {
ampembeng 15:6f2798e45099 111 if (1 != sscanf(jsonString + token->start, "%i", i)) {
ampembeng 15:6f2798e45099 112 WARN("Token was not an integer.");
ampembeng 15:6f2798e45099 113 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 114 }
ampembeng 15:6f2798e45099 115
ampembeng 15:6f2798e45099 116 return NONE_ERROR;
ampembeng 15:6f2798e45099 117 }
ampembeng 15:6f2798e45099 118
ampembeng 15:6f2798e45099 119 IoT_Error_t parseInteger8Value(int8_t *i, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 120 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 121 WARN("Token was not an integer");
ampembeng 15:6f2798e45099 122 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 123 }
ampembeng 15:6f2798e45099 124
ampembeng 15:6f2798e45099 125 //if (1 != sscanf(jsonString + token->start, "%"PRIi8, i)) {
ampembeng 15:6f2798e45099 126 if (1 != sscanf(jsonString + token->start, "%i", i)) {
ampembeng 15:6f2798e45099 127 WARN("Token was not an integer.");
ampembeng 15:6f2798e45099 128 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 129 }
ampembeng 15:6f2798e45099 130
ampembeng 15:6f2798e45099 131 return NONE_ERROR;
ampembeng 15:6f2798e45099 132 }
ampembeng 15:6f2798e45099 133
ampembeng 15:6f2798e45099 134 IoT_Error_t parseFloatValue(float *f, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 135 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 136 WARN("Token was not a float.");
ampembeng 15:6f2798e45099 137 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 138 }
ampembeng 15:6f2798e45099 139
ampembeng 15:6f2798e45099 140 if (1 != sscanf(jsonString + token->start, "%f", f)) {
ampembeng 15:6f2798e45099 141 WARN("Token was not a float.");
ampembeng 15:6f2798e45099 142 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 143 }
ampembeng 15:6f2798e45099 144
ampembeng 15:6f2798e45099 145 return NONE_ERROR;
ampembeng 15:6f2798e45099 146 }
ampembeng 15:6f2798e45099 147
ampembeng 15:6f2798e45099 148 IoT_Error_t parseDoubleValue(double *d, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 149 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 150 WARN("Token was not a double.");
ampembeng 15:6f2798e45099 151 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 152 }
ampembeng 15:6f2798e45099 153
ampembeng 15:6f2798e45099 154 if (1 != sscanf(jsonString + token->start, "%lf", d)) {
ampembeng 15:6f2798e45099 155 WARN("Token was not a double.");
ampembeng 15:6f2798e45099 156 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 157 }
ampembeng 15:6f2798e45099 158
ampembeng 15:6f2798e45099 159 return NONE_ERROR;
ampembeng 15:6f2798e45099 160 }
ampembeng 15:6f2798e45099 161
ampembeng 15:6f2798e45099 162 IoT_Error_t parseBooleanValue(bool *b, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 163 if (token->type != JSMN_PRIMITIVE) {
ampembeng 15:6f2798e45099 164 WARN("Token was not a primitive.");
ampembeng 15:6f2798e45099 165 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 166 }
ampembeng 15:6f2798e45099 167 if (jsonString[token->start] == 't' && jsonString[token->start + 1] == 'r' && jsonString[token->start + 2] == 'u'
ampembeng 15:6f2798e45099 168 && jsonString[token->start + 3] == 'e') {
ampembeng 15:6f2798e45099 169 *b = true;
ampembeng 15:6f2798e45099 170 } else if (jsonString[token->start] == 'f' && jsonString[token->start + 1] == 'a'
ampembeng 15:6f2798e45099 171 && jsonString[token->start + 2] == 'l' && jsonString[token->start + 3] == 's'
ampembeng 15:6f2798e45099 172 && jsonString[token->start + 4] == 'e') {
ampembeng 15:6f2798e45099 173 *b = false;
ampembeng 15:6f2798e45099 174 } else {
ampembeng 15:6f2798e45099 175 WARN("Token was not a bool.");
ampembeng 15:6f2798e45099 176 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 177 }
ampembeng 15:6f2798e45099 178 return NONE_ERROR;
ampembeng 15:6f2798e45099 179 }
ampembeng 15:6f2798e45099 180
ampembeng 15:6f2798e45099 181 IoT_Error_t parseStringValue(char *buf, const char *jsonString, jsmntok_t *token) {
ampembeng 15:6f2798e45099 182 uint16_t size = 0;
ampembeng 15:6f2798e45099 183 if (token->type != JSMN_STRING) {
ampembeng 15:6f2798e45099 184 WARN("Token was not a string.");
ampembeng 15:6f2798e45099 185 return JSON_PARSE_ERROR;
ampembeng 15:6f2798e45099 186 }
ampembeng 15:6f2798e45099 187 size = token->end - token->start;
ampembeng 15:6f2798e45099 188 memcpy(buf, jsonString + token->start, size);
ampembeng 15:6f2798e45099 189 buf[size] = '\0';
ampembeng 15:6f2798e45099 190 return NONE_ERROR;
ampembeng 15:6f2798e45099 191 }
ampembeng 15:6f2798e45099 192