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Merge pull request #16 from taffarel55/taffarel55/newSugestionModules
Sugestao do Modulo 3 + Sugestao e esboço da projeto do 4
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# Sugestão: | ||
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Mostrar como utilizar o Platformio em um projeto, um bacana de se usar seria como programar o ESP remotamente via OTA! | ||
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Esses dois carinhas fazem todo o sentido! | ||
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O platformio por trabalhar com um ambiente de dev com mts beneficios, gerenciamento de libs e tal | ||
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E o projeto programando via OTA (sem cabo) tem mts benefícios, atualizar o PET Status dentro da caixa de acrílico por exemplo! |
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.pio | ||
.vscode/.browse.c_cpp.db* | ||
.vscode/c_cpp_properties.json | ||
.vscode/launch.json | ||
.vscode/ipch |
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{ | ||
// See http://go.microsoft.com/fwlink/?LinkId=827846 | ||
// for the documentation about the extensions.json format | ||
"recommendations": [ | ||
"platformio.platformio-ide" | ||
], | ||
"unwantedRecommendations": [ | ||
"ms-vscode.cpptools-extension-pack" | ||
] | ||
} |
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This directory is intended for project header files. | ||
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A header file is a file containing C declarations and macro definitions | ||
to be shared between several project source files. You request the use of a | ||
header file in your project source file (C, C++, etc) located in `src` folder | ||
by including it, with the C preprocessing directive `#include'. | ||
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```src/main.c | ||
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#include "header.h" | ||
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int main (void) | ||
{ | ||
... | ||
} | ||
``` | ||
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Including a header file produces the same results as copying the header file | ||
into each source file that needs it. Such copying would be time-consuming | ||
and error-prone. With a header file, the related declarations appear | ||
in only one place. If they need to be changed, they can be changed in one | ||
place, and programs that include the header file will automatically use the | ||
new version when next recompiled. The header file eliminates the labor of | ||
finding and changing all the copies as well as the risk that a failure to | ||
find one copy will result in inconsistencies within a program. | ||
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In C, the usual convention is to give header files names that end with `.h'. | ||
It is most portable to use only letters, digits, dashes, and underscores in | ||
header file names, and at most one dot. | ||
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Read more about using header files in official GCC documentation: | ||
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* Include Syntax | ||
* Include Operation | ||
* Once-Only Headers | ||
* Computed Includes | ||
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https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html |
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This directory is intended for project specific (private) libraries. | ||
PlatformIO will compile them to static libraries and link into executable file. | ||
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The source code of each library should be placed in a an own separate directory | ||
("lib/your_library_name/[here are source files]"). | ||
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For example, see a structure of the following two libraries `Foo` and `Bar`: | ||
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|--lib | ||
| | | ||
| |--Bar | ||
| | |--docs | ||
| | |--examples | ||
| | |--src | ||
| | |- Bar.c | ||
| | |- Bar.h | ||
| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html | ||
| | | ||
| |--Foo | ||
| | |- Foo.c | ||
| | |- Foo.h | ||
| | | ||
| |- README --> THIS FILE | ||
| | ||
|- platformio.ini | ||
|--src | ||
|- main.c | ||
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and a contents of `src/main.c`: | ||
``` | ||
#include <Foo.h> | ||
#include <Bar.h> | ||
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int main (void) | ||
{ | ||
... | ||
} | ||
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``` | ||
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PlatformIO Library Dependency Finder will find automatically dependent | ||
libraries scanning project source files. | ||
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More information about PlatformIO Library Dependency Finder | ||
- https://docs.platformio.org/page/librarymanager/ldf.html |
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; PlatformIO Project Configuration File | ||
; | ||
; Build options: build flags, source filter | ||
; Upload options: custom upload port, speed and extra flags | ||
; Library options: dependencies, extra library storages | ||
; Advanced options: extra scripting | ||
; | ||
; Please visit documentation for the other options and examples | ||
; https://docs.platformio.org/page/projectconf.html | ||
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[env:nodemcu-32s] | ||
platform = espressif32 | ||
board = nodemcu-32s | ||
framework = arduino | ||
monitor_speed = 115200 | ||
lib_deps = knolleary/PubSubClient@^2.8 |
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// Programa: comunicação MQTT com ESP32 | ||
// Autor: Pedro Bertoleti | ||
// Alguns comentários adicionados por: Maurício Taffarel (taffarel55) | ||
// https://www.newtoncbraga.com.br/index.php/microcontroladores/143-tecnologia/17117-comunicando-se-via-mqtt-com-o-esp32-mic404.html | ||
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/* Headers */ | ||
#include <Arduino.h> | ||
#include <WiFi.h> | ||
#include <PubSubClient.h> // Documentação: https://pubsubclient.knolleary.net/api | ||
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/* Defines do MQTT */ | ||
#define TOPICO_SUBSCRIBE "taffarel55_recebe_informacao" | ||
#define TOPICO_PUBLISH "taffarel55_envia_informacao" | ||
#define ID_MQTT "taffarel55_Cliente_MQTT" | ||
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/* Variáveis e constantes globais */ | ||
const char *SSID = "HUAWEI-2.4G-Uppx"; | ||
const char *PASSWORD = "eBTPrJ4a"; | ||
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/* Configurações do Broker */ | ||
const char *BROKER_MQTT = "broker.hivemq.com"; | ||
int BROKER_PORT = 1883; | ||
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/* Variáveis e objetos globais */ | ||
// https://pubsubclient.knolleary.net/api#PubSubClient1 | ||
WiFiClient espClient; // client - the network client to use, for example WiFiClient | ||
PubSubClient MQTT(espClient); // Creates a partially initialised client instance. | ||
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// Prototypes | ||
void init_serial(void); | ||
void init_wifi(void); | ||
void init_mqtt(void); | ||
void reconnect_wifi(void); | ||
void mqtt_callback(char *topic, byte *payload, unsigned int length); | ||
void verifica_conexoes_wifi_mqtt(void); | ||
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/* | ||
* Implementações das funções | ||
*/ | ||
void setup() | ||
{ | ||
init_serial(); | ||
init_wifi(); | ||
init_mqtt(); | ||
} | ||
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/* Função: inicializa comunicação serial com baudrate 115200 (para fins de monitorar no terminal serial | ||
* o que está acontecendo. | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
*/ | ||
void init_serial() | ||
{ | ||
Serial.begin(115200); | ||
} | ||
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/* Função: inicializa e conecta-se na rede WI-FI desejada | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
*/ | ||
void init_wifi(void) | ||
{ | ||
delay(10); | ||
Serial.println("------ Conexao WI-FI ------"); | ||
Serial.print("Conectando-se na rede: "); | ||
Serial.println(SSID); | ||
Serial.println("Aguarde"); | ||
reconnect_wifi(); | ||
} | ||
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/* Função: inicializa parâmetros de conexão MQTT(endereço do | ||
* broker, porta e seta função de callback) | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
*/ | ||
void init_mqtt(void) | ||
{ | ||
/* informa a qual broker e porta deve ser conectado */ | ||
// https://pubsubclient.knolleary.net/api#PubSubClient1 | ||
MQTT.setServer(BROKER_MQTT, BROKER_PORT); // client.setServer("broker.example.com",1883); | ||
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/* atribui função de callback (quando qualquer informação do tópico subescrito chega) */ | ||
// https://pubsubclient.knolleary.net/api#setCallback | ||
MQTT.setCallback(mqtt_callback); // PubSubClient* setCallback (callback) | ||
} | ||
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/* Função: função de callback | ||
* esta função é chamada toda vez que uma informação de | ||
* um dos tópicos subescritos chega) | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
* */ | ||
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// https://pubsubclient.knolleary.net/api#callback | ||
void mqtt_callback(char *topic, byte *payload, unsigned int length) | ||
{ | ||
String msg; | ||
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// obtem a string do payload recebido | ||
for (int i = 0; i < length; i++) | ||
{ | ||
char c = (char)payload[i]; | ||
msg += c; | ||
} | ||
Serial.print("[MQTT] Mensagem recebida: "); | ||
Serial.println(msg); | ||
} | ||
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/* Função: reconecta-se ao broker MQTT (caso ainda não esteja conectado ou em caso de a conexão cair) | ||
* em caso de sucesso na conexão ou reconexão, o subscribe dos tópicos é refeito. | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
*/ | ||
void reconnect_mqtt(void) | ||
{ | ||
while (!MQTT.connected()) | ||
{ | ||
Serial.print("* Tentando se conectar ao Broker MQTT: "); | ||
Serial.println(BROKER_MQTT); | ||
if (MQTT.connect(ID_MQTT)) | ||
{ | ||
Serial.println("Conectado com sucesso ao broker MQTT!"); | ||
MQTT.subscribe(TOPICO_SUBSCRIBE); | ||
} | ||
else | ||
{ | ||
Serial.println("Falha ao reconectar no broker."); | ||
Serial.println("Havera nova tentatica de conexao em 2s"); | ||
delay(2000); | ||
} | ||
} | ||
} | ||
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/* Função: reconecta-se ao WiFi | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
*/ | ||
void reconnect_wifi() | ||
{ | ||
/* se já está conectado a rede WI-FI, nada é feito. | ||
Caso contrário, são efetuadas tentativas de conexão */ | ||
if (WiFi.status() == WL_CONNECTED) | ||
return; | ||
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WiFi.begin(SSID, PASSWORD); | ||
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while (WiFi.status() != WL_CONNECTED) | ||
{ | ||
delay(100); | ||
Serial.print("."); | ||
} | ||
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Serial.println(); | ||
Serial.print("Conectado com sucesso na rede "); | ||
Serial.print(SSID); | ||
Serial.println("IP obtido: "); | ||
Serial.println(WiFi.localIP()); | ||
} | ||
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/* Função: verifica o estado das conexões WiFI e ao broker MQTT. | ||
* Em caso de desconexão (qualquer uma das duas), a conexão | ||
* é refeita. | ||
* Parâmetros: nenhum | ||
* Retorno: nenhum | ||
*/ | ||
void verifica_conexoes_wifi_mqtt(void) | ||
{ | ||
/* se não há conexão com o WiFI, a conexão é refeita */ | ||
reconnect_wifi(); | ||
/* se não há conexão com o Broker, a conexão é refeita */ | ||
if (!MQTT.connected()) | ||
reconnect_mqtt(); | ||
} | ||
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/* programa principal */ | ||
void loop() | ||
{ | ||
/* garante funcionamento das conexões WiFi e ao broker MQTT */ | ||
verifica_conexoes_wifi_mqtt(); | ||
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/* Envia frase ao broker MQTT */ | ||
// https://pubsubclient.knolleary.net/api#publish | ||
MQTT.publish(TOPICO_PUBLISH, "ESP32 se comunicando com MQTT"); | ||
// boolean publish (topic, payload, [length], [retained]) | ||
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/* keep-alive da comunicação com broker MQTT */ | ||
// https://pubsubclient.knolleary.net/api#loop | ||
MQTT.loop(); | ||
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/* Agurda 1 segundo para próximo envio */ | ||
delay(1000); | ||
} |
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This directory is intended for PlatformIO Unit Testing and project tests. | ||
|
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Unit Testing is a software testing method by which individual units of | ||
source code, sets of one or more MCU program modules together with associated | ||
control data, usage procedures, and operating procedures, are tested to | ||
determine whether they are fit for use. Unit testing finds problems early | ||
in the development cycle. | ||
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More information about PlatformIO Unit Testing: | ||
- https://docs.platformio.org/page/plus/unit-testing.html |