SHT31-F新品测评(2)通过ESP32接入HomeKit
本帖最后由 vany5921 于 2020-6-6 13:38 编辑1.测试视频：
https://v.youku.com/v_show/id_XNDcwMTMyNDI0NA==.html
介绍一下将SHT31-F接入HomeKit的方法，这里使用了以前我用的SHT3X的库。乐鑫有一套基于ESP-IDF开发HomeKit的SDK，对于许多用户来说过于复杂，因此有大神进行了Arduino版本的移植，并封装好了编译库，我们只需要根据自己使用的功能进行添加即可。该库作者还在不断完善功能中，基本的数据获取和开关控制是不影响的。
2.电路连接：
我依然选择了简洁的一体化主机作为控制节点，通过GROVE线反插连接到Gravity接口，非常简单
3.程序
程序部分先介绍一个库ESPHAP，github地址https://github.com/Yurik72/ESPHap，支持ESP32与ESP8266。由于封装的比较完整，整个使用并不复杂，基本处理过程：
•在文件系统中开辟一块空间存储配对码
•连接WIFI
•注册接入的产品类型
•写入产品的描述信息
•注册HomeKit相关服务
•回调HomeKit服务
主要代码部分：
#include <M5Atom.h>
#include "SHT3X.h"
#include <Wire.h> //The DHT12 uses I2C comunication.
#include <WiFi.h>
#include <FS.h>
#include <SPIFFS.h>
const char* ssid = "GB3-14FF";
const char* password = "12345678";
const int identity_led=-1;//LED提示灯，我的是RGB因此用不到
float tmp = 0.0;
float hum = 0.0;
extern "C"{
#include "homeintegration.h"
}
homekit_service_t* hapservice={0};
String pair_file_name="/pair.dat";
void Format(){
// Next lines have to be done ONLY ONCE!!!!!When SPIFFS is formatted ONCE you can comment these lines out!!
Serial.println("Please wait 30 secs for SPIFFS to be formatted");
SPIFFS.format();
Serial.println("Spiffs formatted");
}
void init_hap_storage(){
Serial.print("init_hap_storage");
if (!SPIFFS.begin(true)) {
Serial.print("SPIFFS Mount failed");
}
File fsDAT=SPIFFS.open(pair_file_name, "r");
if(!fsDAT){
Serial.println("Failed to read pair.dat");
return;
}
int size=hap_get_storage_size_ex();
char* buf=new char;
memset(buf,0xff,size);
int readed=fsDAT.readBytes(buf,size);
Serial.print("Readed bytes ->");
Serial.println(readed);
hap_init_storage_ex(buf,size);
fsDAT.close();
delete []buf;
}
void storage_changed(char * szstorage,int size){
SPIFFS.remove(pair_file_name);
File fsDAT=SPIFFS.open(pair_file_name, "w+");
if(!fsDAT){
Serial.println("Failed to open pair.dat");
return;
}
fsDAT.write((uint8_t*)szstorage, size);
fsDAT.close();
}
SHT3X sht30;
homekit_service_t* temperature;
homekit_service_t* humidity;
void setup() {
M5.begin(true, false, true);
Wire.begin(26, 32, 100000);
M5.dis.drawpix(0, 0xff11ff);//设置RGB灯颜色
M5.update();
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
M5.dis.drawpix(0, 0x0011ff);
M5.update();
hap_set_identity_gpio(identity_led);
init_hap_storage();
set_callback_storage_change(storage_changed);
hap_setbase_accessorytype(homekit_accessory_category_thermostat);//注册设备类型
hap_initbase_accessory_service("Sensor","DFROBOT","20200605","SHT31-F","1.0.1");//注册设备详细信息
temperature = hap_add_temperature_service("Temperature Sensor");//注册服务
humidity = hap_add_humidity_service("Humidity Sensor");
//and finally init HAP
hap_init_homekit_server();//启用服务
}
void loop() {
if(sht30.get() == 0){
tmp = sht30.cTemp;
hum = sht30.humidity;
homekit_characteristic_t * ch= homekit_service_characteristic_by_type(temperature, HOMEKIT_CHARACTERISTIC_CURRENT_TEMPERATURE);
ch->value.float_value=tmp;
homekit_characteristic_notify(ch,ch->value);
homekit_characteristic_t * ch2= homekit_service_characteristic_by_type(humidity, HOMEKIT_CHARACTERISTIC_CURRENT_RELATIVE_HUMIDITY);
ch2->value.float_value=hum;
homekit_characteristic_notify(ch2,ch2->value);
}
}
相关文件：
ESPHAP与wolfSSL解压后放入Arduino的library文件夹下
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