获得蓝牙小米温湿度传感器的例子

Zoologist · 发表于 2021-7-25 19:05

代码来自 https://www.instructables.com/ES ... et-Data-Wirelessly/

#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"
#include "esp_system.h"
#include <sstream>
#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEScan.h>
#include <BLEAdvertisedDevice.h>
#define SCAN_TIME 10 // seconds
boolean METRIC = true; //Set true for metric system; false for imperial
BLEScan *pBLEScan;
void IRAM_ATTR resetModule(){
ets_printf("reboot\n");
esp_restart();
}
float current_humidity = -100;
float previous_humidity = -100;
float current_temperature = -100;
float previous_temperature = -100;
class MyAdvertisedDeviceCallbacks : public BLEAdvertisedDeviceCallbacks {
void onResult(BLEAdvertisedDevice advertisedDevice)
{
if (advertisedDevice.haveName() && advertisedDevice.haveServiceData() && !advertisedDevice.getName().compare("MJ_HT_V1")) {
int serviceDataCount = advertisedDevice.getServiceDataCount();
std::string strServiceData = advertisedDevice.getServiceData(0);
uint8_t cServiceData[100];
char charServiceData[100];
strServiceData.copy((char *)cServiceData, strServiceData.length(), 0);
Serial.printf("\n\nAdvertised Device: %s\n", advertisedDevice.toString().c_str());
for (int i=0;i<strServiceData.length();i++) {
sprintf(&charServiceData[i*2], "%02x", cServiceData[i]);
}
std::stringstream ss;
ss << "fe95" << charServiceData;
Serial.print("Payload:");
Serial.println(ss.str().c_str());
char eventLog[256];
unsigned long value, value2;
char charValue[5] = {0,};
switch (cServiceData[11]) {
case 0x04:
sprintf(charValue, "%02X%02X", cServiceData[15], cServiceData[14]);
value = strtol(charValue, 0, 16);
if(METRIC)
{
current_temperature = (float)value/10;
}else
{
current_temperature = CelciusToFahrenheit((float)value/10);
}
displayTemperature();
break;
case 0x06:
sprintf(charValue, "%02X%02X", cServiceData[15], cServiceData[14]);
value = strtol(charValue, 0, 16);
current_humidity = (float)value/10;
displayHumidity();
Serial.printf("HUMIDITY_EVENT: %s, %d\n", charValue, value);
break;
case 0x0A:
sprintf(charValue, "%02X", cServiceData[14]);
value = strtol(charValue, 0, 16);
Serial.printf("BATTERY_EVENT: %s, %d\n", charValue, value);
break;
case 0x0D:
sprintf(charValue, "%02X%02X", cServiceData[15], cServiceData[14]);
value = strtol(charValue, 0, 16);
if(METRIC)
{
current_temperature = (float)value/10;
}else
{
current_temperature = CelciusToFahrenheit((float)value/10);
}
displayTemperature();
Serial.printf("TEMPERATURE_EVENT: %s, %d\n", charValue, value);
sprintf(charValue, "%02X%02X", cServiceData[17], cServiceData[16]);
value2 = strtol(charValue, 0, 16);
current_humidity = (float)value2/10;
displayHumidity();
Serial.printf("HUMIDITY_EVENT: %s, %d\n", charValue, value2);
break;
}
}
}
};
void setup() {
Serial.begin(115200);
Serial.println("ESP32 XIAOMI Humity");
initBluetooth();
}
void loop() {
char printLog[256];
Serial.printf("Start BLE scan for %d seconds...\n", SCAN_TIME);
BLEScan* pBLEScan = BLEDevice::getScan(); //create new scan
pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster
BLEScanResults foundDevices = pBLEScan->start(SCAN_TIME);
int count = foundDevices.getCount();
printf("Found device count : %d\n", count);
delay(100);
}
void initBluetooth()
{
BLEDevice::init("");
pBLEScan = BLEDevice::getScan(); //create new scan
pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster
pBLEScan->setInterval(0x50);
pBLEScan->setWindow(0x30);
}
void displayTemperature()
{
if(current_temperature != previous_temperature)
{
previous_temperature = current_temperature;
}
}
void displayHumidity()
{
if(current_humidity != previous_humidity)
{
previous_humidity = current_humidity;
}
}
String convertFloatToString(float f)
{
String s = String(f,1);
return s;
}
float CelciusToFahrenheit(float Celsius)
{
float Fahrenheit=0;
Fahrenheit = Celsius * 9/5 + 32;
return Fahrenheit;
}

复制代码

我使用 DFRobot FireBeetle 测试接收

结果如下（测试有2个上面这样的传感器）

anqiw · 发表于 2021-7-25 22:22

正在找，谢谢了。只限上图的温湿度计吗，米家其他的蓝牙温湿度计都支持吗？

Zoologist · 发表于 2021-7-26 08:35

anqiw 发表于 2021-7-25 22:22
正在找，谢谢了。只限上图的温湿度计吗，米家其他的蓝牙温湿度计都支持吗？ ...

不知道唉

我用的是图上这一款

oanger · 发表于 2021-7-28 23:20

不知道他用的什么方案

Zoologist · 发表于 2021-7-29 08:47

oanger 发表于 2021-7-28 23:20
不知道他用的什么方案

https://post.smzdm.com/p/alpzodd8/
可以参考一下

oanger · 发表于 2021-7-29 22:51

Zoologist 发表于 2021-7-29 08:47
https://post.smzdm.com/p/alpzodd8/
可以参考一下

谢谢，新手，没看太懂。

leonclz · 发表于 2021-10-20 00:47

那个soc.h是从哪里获取的？

Zoologist · 发表于 2021-10-20 08:42

leonclz 发表于 2021-10-20 00:47
那个soc.h是从哪里获取的？

编译环境自带的。

leonclz · 发表于 2021-10-20 14:15

本帖最后由 leonclz 于 2021-10-20 14:52 编辑

Zoologist 发表于 2021-10-20 08:42
编译环境自带的。

也就是说，需要esp32的板子才有这个头文件？我用的d1 mini ，编译的时候提示没有这个文件

Zoologist · 发表于 2021-10-20 15:48

leonclz 发表于 2021-10-20 14:15
也就是说，需要esp32的板子才有这个头文件？我用的d1 mini ，编译的时候提示没有这个文件 ...

你可以试试 DFRobot 的 FireBeetle 环境，前几天做了一个项目，里面是有的。

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