Added support for the ESP-IDF framework

API.md

@@ -1,6 +1,6 @@
 # CayenneLPP API Reference
 
-The `CayenneLPP` class enables Arduino devices to encode data with the Cayenne Lower Power Protocol (LPP). [Read more about Cayenne LPP](https://mydevices.com/cayenne/docs/#lora-cayenne-low-power-payload)
+The `CayenneLPP` class enables Arduino and ESP-IDF devices to encode data with the Cayenne Lower Power Protocol (LPP). [Read more about Cayenne LPP](https://mydevices.com/cayenne/docs/#lora-cayenne-low-power-payload)
 
 ### Class: `CayenneLPP`
 

CMakeLists.txt

@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.13)
+
+if(ESP_PLATFORM)
+  # Build CayenneLPP as an ESP-IDF component
+  # required because ESP-IDF runs cmake in script mode
+  # and needs idf_component_register()
+  file(GLOB_RECURSE CAYENNELPP_ESP_SOURCES
+    "src/*.*"
+  )
+
+  idf_component_register(
+    SRCS ${CAYENNELPP_ESP_SOURCES} 
+    INCLUDE_DIRS src 
+    REQUIRES bblanchon__arduinojson
+  )
+
+  return()
+endif()

README.md

@@ -1,8 +1,8 @@
-# CayenneLPP _by Electronic Cats_ - Library for Arduino
+# CayenneLPP _by Electronic Cats_ - Library for Arduino and ESP-IDF
 
 ![LibraryBuild](https://github.com/ElectronicCats/CayenneLPP/workflows/LibraryBuild/badge.svg?branch=master)
 
-This is an Arduino Library for Arduino Compatible with Cayenne Low Power Payload with Extended Data Types.
+This is an Library for Arduino and ESP-IDF Compatible with Cayenne Low Power Payload with Extended Data Types.
 
 CayenneLPP is a format designed by [myDevices](https://mydevices.com) to integrate LoRaWan nodes into their [IoT Platform](https://mydevices.com/capabilities). It is used to send sensor data in a packed way to [The Things Network platform](https://www.thethingsnetwork.org). You can read more on [myDevices CayenneLPP](https://docs.mydevices.com/docs/lorawan/cayenne-lpp)
 

idf_component.yml

@@ -0,0 +1,13 @@
+version: "1.3.0"
+description: "CayenneLPP library for Arduino and ESP-IDF. Compatible with Cayenne Low Power Payload."
+tags: "communication, LoRa, LoRaWAN"
+url: "https://github.com/ElectronicCats/CayenneLPP"
+issues: https://github.com/ElectronicCats/CayenneLPP/issues
+documentation: https://github.com/ElectronicCats/CayenneLPP/blob/master/API.md
+repository: "https://github.com/ElectronicCats/CayenneLPP.git"
+license: "MIT"
+dependencies:
+  bblanchon/arduinojson:
+    version: "*"
+maintainers:
+  "Electronic Cats <hola@electroniccats.com>"

library.json

@@ -0,0 +1,31 @@
+{
+  "name": "CayenneLPP",
+  "version": "1.3.0",
+  "description": "CayenneLPP library for Arduino and ESP-IDF. Compatible with Cayenne Low Power Payload.",
+  "keywords": "communication, LoRa, LoRaWAN",
+  "homepage": "https://github.com/ElectronicCats/CayenneLPP",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ElectronicCats/CayenneLPP.git"
+  },
+  "authors": {
+    "name": "Electronic Cats",
+    "email": "hola@electroniccats.com",
+    "maintainer": true
+  },
+  "license": "MIT",
+  "frameworks":[
+    "arduino",
+    "espidf"
+  ],
+  "platforms": "*",
+  "headers": "CayenneLPP.h",
+  "dependencies":
+  {
+      "bblanchon/ArduinoJson": "*"
+  },
+  "build":
+  {
+    "libLDFMode": "chain+"
+  }
+}

src/CayenneLPP.cpp

@@ -932,7 +932,7 @@ uint32_t CayenneLPP::getValue32(uint8_t * buffer, uint8_t size) {
 
 }
 
-#ifdef ARDUINO
+#if defined(ARDUINO) || defined(IDF_VER)
 uint8_t CayenneLPP::decode(uint8_t *buffer, uint8_t len, JsonArray& root) {
 
   uint8_t count = 0;
@@ -967,8 +967,12 @@ uint8_t CayenneLPP::decode(uint8_t *buffer, uint8_t len, JsonArray& root) {
     JsonObject data = root.createNestedObject();
     data["channel"] = channel;
     data["type"] = type;
+#ifdef ARDUINO
     data["name"] = String(getTypeName(type));
-
+#else
+    data["name"] = std::string(getTypeName(type));
+#endif
+
     // Parse types
 	if (false) {
 	}
@@ -1059,7 +1063,11 @@ uint8_t CayenneLPP::decodeTTN(uint8_t *buffer, uint8_t len, JsonObject& root) {
     }
 
     // Init object
+#ifdef ARDUINO
     String name = String(getTypeName(type)) + "_" + channel;
+#else
+    std::string name = std::string(getTypeName(type)) + "_" + std::to_string(channel);
+#endif
 
     // Parse types
 	if (false) {
@@ -1126,7 +1134,9 @@ uint8_t CayenneLPP::decodeTTN(uint8_t *buffer, uint8_t len, JsonObject& root) {
   return count;
 
 }
-#else
+#endif
+// Non Arduino frameworks
+#ifndef ARDUINO
 uint8_t CayenneLPP::decode(uint8_t *buffer, uint8_t len, std::map<uint8_t, CayenneLPPMessage> &messageMap) {
 
   uint8_t count = 0;

src/CayenneLPP.h

@@ -7,10 +7,17 @@
 #ifndef CAYENNE_LPP_H
 #define CAYENNE_LPP_H
 
+// Arduino framework
 #ifdef ARDUINO
 #include <Arduino.h>
 #include <ArduinoJson.h>
-#else
+#endif
+// ESP-IDF framework
+#if !defined(ARDUINO) && defined(IDF_VER)
+#include <ArduinoJson.h>
+#endif
+// Non Arduino frameworks
+#ifndef ARDUINO
 #include <cstdint>
 #include <map>
 #include "CayenneLPPMessage.h"
@@ -121,10 +128,13 @@ class CayenneLPP {
 
   // Decoder methods
   const char *getTypeName(uint8_t type);
-#ifdef ARDUINO
+// Arduino or ESP-IDF framework
+#if defined(ARDUINO) || defined(IDF_VER)
   uint8_t decode(uint8_t *buffer, uint8_t size, JsonArray &root);
   uint8_t decodeTTN(uint8_t *buffer, uint8_t size, JsonObject &root);
-#else
+#endif
+// Non Arduino frameworks
+#ifndef ARDUINO
   uint8_t decode(uint8_t *buffer, uint8_t size, std::map<uint8_t, CayenneLPPMessage> &messageMap);
 #endif
 

src/CayenneLPPPolyline.cpp

@@ -199,7 +199,12 @@ void CayenneLPPPolyline::pushFirst(double lat, double lon, uint8_t factor) {
 }
 
 void CayenneLPPPolyline::writeHeader(int32_t lat, int32_t lon, uint8_t factor) {
+// ESP-IDF framework
+#if !defined(ARDUINO) && defined(IDF_VER)
+    m_buffer.resize(std::max(static_cast<long unsigned int>(m_buffer.size()), 8UL));
+#else
     m_buffer.resize(std::max(m_buffer.size(), 8UL));
+#endif
     m_buffer[0] = m_buffer.size();
     m_buffer[1] = factor;
     m_buffer[2] = (lat >> 16); m_buffer[3] = (lat >> 8); m_buffer[4] = (lat);

src/CayenneLPPPolyline.h

@@ -12,6 +12,10 @@
 
 #include <utility>
 #include <vector>
+// ESP-IDF framework
+#if !defined(ARDUINO) && defined(IDF_VER)
+#include <stdint.h>
+#endif
 
 struct DeltaCoord;