{"id":3405,"date":"2021-04-04T13:02:44","date_gmt":"2021-04-04T18:02:44","guid":{"rendered":"http:\/\/blog.espol.edu.ec\/girni\/?p=3405"},"modified":"2021-08-06T21:02:42","modified_gmt":"2021-08-07T02:02:42","slug":"lorawan-sensor-humedad-y-temperatura-archivo-ino","status":"publish","type":"post","link":"https:\/\/blog.espol.edu.ec\/girni\/lorawan-sensor-humedad-y-temperatura-archivo-ino\/","title":{"rendered":"LoRaWan \u2013 Sensor Humedad y Temperatura. Archivo.ino"},"content":{"rendered":"

El desarrollo del ejercicio se simplifica al tratarse como una extensi\u00f3n del ejemplo base de comunicaci\u00f3n Lora al que se a\u00f1ade el Sensor DHT11.<\/p>\n

ChirpStack \u2013 A\u00f1adir un dispositivo<\/a><\/p>\n

El archivo de instrucciones se presenta en tres secciones o pesta\u00f1as. La primera contiene la declaraci\u00f3n de variables, la parte de configuraci\u00f3n y el lazo principal. Las siguientes dos secciones son procedimientos para preparaci\u00f3n de trama y lectura de sensor.<\/p>\n

Preparaci\u00f3n de trama<\/h2>\n

El valor de temperatura se almacena en tipo real (float) que usa 4 bytes. En la trama se separan los bytes en orden LSB (Byte menos significativo primero, detalle que hay que recordar para decodificar en ChirpStack.<\/p>\n

    unsigned char *puc;\r\n    puc = (unsigned char *)(&temperaturaC);\r\n    appDataSize = 8;\/\/AppDataSize max value is 64\r\n    appData[0] = puc[0];\r\n    appData[1] = puc[1];\r\n    appData[2] = puc[2];\r\n    appData[3] = puc[3];\r\n<\/pre>\n
De utilizar el mismo formato para el valor de Humedad, el formato es muy semejante.<\/p>\n
Intrucciones Principales<\/h2>\n
 \/*<\/span>\r\n * HelTec Automation(TM) LoRaWAN 1.0.2 OTAA example use OTAA, CLASS A<\/span>\r\n * Solo ESP32+LoRa series boards con licencia <\/span>http: \/ \/www.heltec.cn \/search \/<\/span><\/u>);<\/span>\r\n *<\/span>https: \/ \/github.com \/HelTecAutomation \/ESP32_LoRaWAN<\/span><\/u>\r\n* \/<\/span>\r\n#include<\/span> <<\/span>ESP32_LoRaWAN<\/span>.h<\/span>><\/span>\r\n#include<\/span> \"Arduino.h\"<\/span>\r\n#include<\/span> <<\/span>DHT<\/span><\/b>.h<\/span>><\/span>\r\n\r\n \/*licencia Heltec ESP32 LoRaWan <\/span>http: \/ \/resource.heltec.cn \/search<\/span><\/u> * \/<\/span>\r\nuint32_t<\/span>  license<\/span>[4<\/span>] = {0xBE21335B<\/span>, 0xAEC3C5CE<\/span>, 0xCC0A1CF4<\/span>, 0xB836F981<\/span>};\r\n\r\n \/* OTAA parametros* \/<\/span>\r\nuint8_t<\/span> DevEui<\/span>[] = { 0x01<\/span>, 0x20<\/span>, 0x08<\/span>, 0x93<\/span>, 0xdf<\/span>, 0x80<\/span>, 0x37<\/span>, 0x74<\/span> };\r\nuint8_t<\/span> AppEui<\/span>[] = { 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span> };\r\nuint8_t<\/span> AppKey<\/span>[] = { 0x05<\/span>, 0x8e<\/span>, 0xeb<\/span>, 0xff<\/span>, 0x24<\/span>, 0xf1<\/span>, 0x01<\/span>, 0x84<\/span>, 0xd0<\/span>, 0x07<\/span>, 0xbe<\/span>, 0xd4<\/span>, 0x65<\/span>, 0xe7<\/span>, 0x6b<\/span>, 0xb5<\/span> };\r\n\r\n \/* ABP parametros* \/<\/span>\r\nuint32_t<\/span> DevAddr<\/span> =  ( uint32_t<\/span> )0x0174b1fd<\/span>;\r\nuint8_t<\/span> NwkSKey<\/span>[] = { 0xc1<\/span>, 0x45<\/span>, 0x31<\/span>, 0x28<\/span>, 0x5f<\/span>, 0xb2<\/span>, 0x56<\/span>, 0x3b<\/span>, 0x9d<\/span>, 0x5f<\/span>, 0x27<\/span>, 0x15<\/span>, 0xed<\/span>, 0x3a<\/span>, 0x0e<\/span>, 0xbc<\/span>}; \r\nuint8_t<\/span> AppSKey<\/span>[] = { 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>, 0x00<\/span>};\r\n\r\n \/ \/LoraWan channelsmask, default channels 0-7 \/<\/span>\r\nuint16_t<\/span> userChannelsMask<\/span>[6<\/span>]={ 0x00FF<\/span>,0x0000<\/span>,0x0000<\/span>,0x0000<\/span>,0x0000<\/span>,0x0000<\/span> };\r\n\r\nDeviceClass_t<\/span>  loraWanClass<\/span> = CLASS_A<\/span>;   \/*Soporte de A and C* \/<\/span>\r\nuint32_t<\/span> appTxDutyCycle<\/span> = 300000<\/span>;         \/*15000; en [ms]* \/<\/span>\r\nbool<\/span> overTheAirActivation<\/span> = true<\/span>;        \/*OTAA or ABP* \/<\/span>\r\nbool<\/span> loraWanAdr<\/span> = true<\/span>;                  \/*ADR enable* \/<\/span>\r\nbool<\/span> isTxConfirmed<\/span> = true<\/span>;               \/*confirmed or unconfirmed messages * \/<\/span>\r\nuint8_t<\/span> appPort<\/span> = 2<\/span>;                     \/* Application port * \/<\/span>\r\n\r\n \/* reintentos de transmisi\u00f3n, en caso de no recibir ack * \/<\/span>\r\nuint8_t<\/span> confirmedNbTrials<\/span> = 8<\/span>;\r\n\r\n \/* Seleccionado de Arduino IDE tools * \/<\/span>\r\nuint8_t<\/span> debugLevel<\/span> = LoRaWAN_DEBUG_LEVEL<\/span>; \r\nLoRaMacRegion_t<\/span> loraWanRegion<\/span> = ACTIVE_REGION<\/span>;\r\n\r\n \/ \/ variables de sensor \/actuador<\/span>\r\nuint8_t<\/span> contador = 0;  \r\nfloat<\/span> humedad = 0;\r\nfloat<\/span> temperaturaC = 0;\r\nfloat<\/span> temperaturaF = 0;\r\n\r\n \/ \/ Mensajes por Puerto Serial<\/span>\r\nvolatile<\/span> boolean<\/span> serial_msg = true<\/span>;\r\n\r\n \/ \/ Sensor humedad y temperatura<\/span>\r\n#define<\/span> DHTPIN<\/span> 4<\/span>\r\n#define<\/span> DHTTYPE<\/span> DHT11<\/span>\r\nDHT<\/span><\/b> dht<\/span>(DHTPIN<\/span>, DHTTYPE<\/span>);\r\n\r\nvoid<\/span> setup<\/span>(){\r\n  if<\/span> (serial_msg){\r\n    Serial<\/span><\/b>.begin<\/span>(115200<\/span>);\r\n    while<\/span> (!<\/span>Serial<\/span><\/b>);\r\n  }\r\n  SPI<\/span><\/b>.begin<\/span>(SCK<\/span>,MISO<\/span>,MOSI<\/span>,SS<\/span>);\r\n  Mcu<\/span>.init<\/span>(SS<\/span>,RST_LoRa<\/span>,DIO0<\/span>,DIO1<\/span>,license<\/span>);\r\n  deviceState = DEVICE_STATE_INIT;\r\n\r\n   \/ \/ SENSOR Temperatura&Humedad<\/span>\r\n  dht<\/span>.begin<\/span>();\r\n}\r\nvoid<\/span> loop<\/span>(){\r\n  \r\n  switch<\/span>( deviceState )  {\r\n    case<\/span> DEVICE_STATE_INIT:<\/span>    {\r\n      LoRaWAN.init<\/span>(loraWanClass<\/span>,loraWanRegion<\/span>);\r\n      break<\/span>;\r\n    }\r\n    case<\/span> DEVICE_STATE_JOIN<\/span>:<\/span>    {\r\n      LoRaWAN.join<\/span>();\r\n      break<\/span>;\r\n    }\r\n    case<\/span> DEVICE_STATE_SEND<\/span>:<\/span>    { \r\n      prepareTxFrame<\/span>( appPort<\/span> );\r\n      LoRaWAN.send<\/span>(loraWanClass<\/span>);\r\n      deviceState = DEVICE_STATE_CYCLE<\/span>;\r\n      break<\/span>;\r\n      \r\n    }\r\n    case<\/span> DEVICE_STATE_CYCLE<\/span>:<\/span>    {\r\n       \/ \/ Schedule next packet transmission<\/span>\r\n      txDutyCycleTime<\/span> = appTxDutyCycle<\/span> +<\/span> randr<\/span>( -<\/span>APP_TX_DUTYCYCLE_RND<\/span>,\r\n                                                APP_TX_DUTYCYCLE_RND<\/span> );\r\n      LoRaWAN.cycle<\/span>(txDutyCycleTime<\/span>);\r\n      deviceState = DEVICE_STATE_SLEEP;\r\n      break<\/span>;\r\n    }\r\n    case<\/span> DEVICE_STATE_SLEEP:<\/span>    {\r\n      LoRaWAN.sleep<\/span>(loraWanClass<\/span>,debugLevel<\/span>);\r\n      break<\/span>;\r\n    }\r\n    default<\/span>:<\/span>    {\r\n      deviceState = DEVICE_STATE_INIT;\r\n      break<\/span>;\r\n    }\r\n  }\r\n}\r\n<\/pre>\n
Preparaci\u00f3n de trama<\/h2>\n
\/\/ Trama - integra datos<\/span>\r\nstatic<\/span> void<\/span> prepareTxFrame( uint8_t<\/span> port ){\r\n    contador = contador +<\/span> 1;\r\n    \/\/ Sensor de Temperatura y Humedad<\/span>\r\n    SensorTempHum();\r\n\r\n    if<\/span> (isnan<\/span>(humedad) ||<\/span> isnan<\/span>(temperaturaC) ||<\/span> isnan<\/span>(temperaturaF)) {\r\n      humedad = 0;\r\n      temperaturaC = 0;\r\n      temperaturaF = 0;\r\n    }\r\n    unsigned<\/span> char<\/span> *<\/span>puc;\r\n    puc = (unsigned<\/span> char<\/span> *<\/span>)(&<\/span>temperaturaC);\r\n    appDataSize = 8;\/\/AppDataSize max value is 64<\/span>\r\n    appData[0] = puc[0];\r\n    appData[1] = puc[1];\r\n    appData[2] = puc[2];\r\n    appData[3] = puc[3];\r\n\r\n    puc = (unsigned<\/span> char<\/span> *<\/span>)(&<\/span>humedad);\r\n    appData[4] = puc[0];\r\n    appData[5] = puc[1];\r\n    appData[6] = puc[2];\r\n    appData[7] = puc[3];\r\n    if<\/span> (serial_msg){\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(\"tx: \"+String(temperaturaC)+\"  \");\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(appData[0]);\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(appData[1]);\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(appData[2]);\r\n      Serial<\/span><\/b>.<\/span>println<\/span>(appData[3]);\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(\"tx: \"+String(humedad)+\"  \");\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(appData[4]);\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(appData[5]);\r\n      Serial<\/span><\/b>.<\/span>print<\/span>(appData[6]);\r\n      Serial<\/span><\/b>.<\/span>println<\/span>(appData[7]);\r\n    }\r\n}\r\n<\/pre>\n
Lectura de sensor<\/h2>\n
void<\/span> SensorTempHum<\/span>(){\r\n  \/\/ SENSOR Temperatura&Humedad<\/span>\r\n  dht<\/span>.<\/span>begin<\/span>(); \/\/ regresa de sleep<\/span>\r\n  delay<\/span>(2000); \/\/ espera minina entre lecturas de sensor\r\n  humedad<\/span> =<\/span> dht<\/span>.<\/span>readHumidity<\/span>();\r\n  temperaturaC<\/span> =<\/span> dht<\/span>.<\/span>readTemperature<\/span>();\r\n  temperaturaF<\/span> =<\/span> dht<\/span>.<\/span>readTemperature<\/span>(true<\/span>);\r\n\r\n  if<\/span> (isnan<\/span>(humedad<\/span>) ||<\/span> isnan<\/span>(temperaturaC<\/span>) ||<\/span> isnan<\/span>(temperaturaF<\/span>)) {\r\n    if<\/span> (serial_msg<\/span>){\r\n      Serial<\/span><\/b>.<\/span>println<\/span>(F<\/span>(\"Failed to read from DHT sensor!\"<\/span>));\r\n    }\r\n    \/\/ espera minina entre lecturas de sensor<\/span>\r\n    delay<\/span>(100<\/span>); \r\n    return<\/span>;\r\n  }\r\n\r\n  float<\/span> hif<\/span> =<\/span> dht<\/span>.<\/span>computeHeatIndex<\/span>(temperaturaF<\/span>,<\/span> humedad<\/span>);\r\n  float<\/span> hic<\/span> =<\/span> dht<\/span>.<\/span>computeHeatIndex<\/span>(temperaturaC<\/span>,<\/span> humedad<\/span>,<\/span> false<\/span>);\r\n\r\n  if<\/span> (serial_msg){\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(F<\/span>(\" Humidity: \"<\/span>));\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(humedad<\/span>);\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(F<\/span>(\"%  \\n Temperature: \"<\/span>));\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(temperaturaC<\/span>);\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(F<\/span>(\"\u00b0C \"<\/span>));\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(temperaturaF<\/span>);\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(F<\/span>(\"\u00b0F \\n Heat index: \"<\/span>));\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(hic<\/span>);\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(F<\/span>(\"\u00b0C \"<\/span>));\r\n    Serial<\/span><\/b>.<\/span>print<\/span>(hif<\/span>);\r\n    Serial<\/span><\/b>.<\/span>println<\/span>(F<\/span>(\"\u00b0F\"<\/span>));\r\n  }\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
El desarrollo del ejercicio se simplifica al tratarse como una extensi\u00f3n del ejemplo base de comunicaci\u00f3n Lora al que se a\u00f1ade el Sensor DHT11. ChirpStack \u2013 A\u00f1adir un dispositivo El archivo de instrucciones se presenta en tres secciones o pesta\u00f1as. La primera contiene la declaraci\u00f3n de variables, la parte de configuraci\u00f3n y el lazo principal. … <\/p>\n
Continuar leyendo \"LoRaWan \u2013 Sensor Humedad y Temperatura. Archivo.ino\"<\/span><\/a><\/p>\n","protected":false},"author":8043,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1465790],"tags":[],"class_list":["post-3405","post","type-post","status-publish","format-standard","hentry","category-lorawan-humedad-y-temperatura"],"_links":{"self":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts\/3405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/users\/8043"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/comments?post=3405"}],"version-history":[{"count":7,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts\/3405\/revisions"}],"predecessor-version":[{"id":3677,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/posts\/3405\/revisions\/3677"}],"wp:attachment":[{"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/media?parent=3405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/categories?post=3405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.espol.edu.ec\/girni\/wp-json\/wp\/v2\/tags?post=3405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}