【2024 DigiKey Creative Competition】ESP-32-S3- Entry-level radar detection + voice broadcast + integrated HA
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This post was last edited by Misaka10032 on 2024-10-30 23:25
Introduction
In the previous article [2024 DigiKey Creative Competition] ESP-32-S3- Entry Radar Detection + Voice Broadcast https://en.eeworld.com/bbs/thread-1297567-1-1.html, we successfully used ESP32-S3 integrated radar and MX98357. So in this section, we will integrate it into HA, so that we can directly query the trigger status of the radar on the HA central control.
Since the code integration here is roughly the same as using ESP32-C6, I will paste the code here directly for demonstration.
#include <ESP_I2S.h>
#include <Adafruit_NeoPixel.h>
#include <WiFi.h>
#include <ArduinoMqttClient.h>
const char *ssid = "ImmortalWrt";
const char *password = "mazha1997";
WiFiClient wifiClient;
MqttClient mqttClient(wifiClient);
const char broker[] = "192.168.1.142";
int port = 1883;
const char sensorTopic[] = "radar"; // 主题2
#define LED_PIN 38 // Pin connected to the data input of SK68XXMINI-HS
#define NUMPIXELS 1 // Number of LEDs (set to 1 if using a single SK68XXMINI-HS)
#define INTERRUPT_PIN 1 // Pin connected to IO1 for detecting high/low signal
Adafruit_NeoPixel pixels(NUMPIXELS, LED_PIN, NEO_GRB + NEO_KHZ800);
bool ledOn = false; // LED state
void IRAM_ATTR handleInterrupt() {
// Toggle LED state based on the level of INTERRUPT_PIN
ledOn = digitalRead(INTERRUPT_PIN); // Read the state of the pin (HIGH or LOW)
}
unsigned char rawData[66044] = {
};
const size_t wavDataSize = sizeof(rawData) / sizeof(rawData[0]);
i2s_data_bit_width_t bps = I2S_DATA_BIT_WIDTH_16BIT;
i2s_mode_t mode = I2S_MODE_STD;
i2s_slot_mode_t slot = I2S_SLOT_MODE_MONO;
I2SClass i2s;
void setup() {
Serial.begin(115200);
Serial.println("I2S playback from array");
pinMode(INTERRUPT_PIN, INPUT); // Set INTERRUPT_PIN (IO1) as input
attachInterrupt(digitalPinToInterrupt(INTERRUPT_PIN), handleInterrupt, CHANGE); // Trigger on any change in level (HIGH or LOW)
i2s.setPins(41, 42, 40); // BCLK, LRC, DIN
// 启动 I2S，设置采样率和每个样本的位宽
if (!i2s.begin(mode, 30000, bps, slot)) { // 假设采样率为 48000 Hz
Serial.println("Failed to initialize I2S!");
while (1)
; // 不执行任何操作
}
pixels.begin(); // 初始化 LED
WiFi.begin(ssid, password);
int tryDelay = 500;
int numberOfTries = 20;
while (true) {
switch (WiFi.status()) {
case WL_NO_SSID_AVAIL: Serial.println("[WiFi] SSID not found"); break;
case WL_CONNECT_FAILED:
Serial.println("[WiFi] Failed - WiFi not connected! Reason: ");
return;
break;
case WL_CONNECTION_LOST: Serial.println("[WiFi] Connection was lost"); break;
case WL_DISCONNECTED: Serial.println("[WiFi] WiFi is disconnected"); break;
case WL_CONNECTED:
Serial.println("[WiFi] WiFi is connected!");
Serial.print("[WiFi] IP address: ");
Serial.println(WiFi.localIP());
Serial.print("Attempting to connect to the MQTT broker: ");
Serial.println(broker);
mqttClient.setUsernamePassword("root", "mazha1997");
if (!mqttClient.connect(broker, port)) {
Serial.print("MQTT connection failed! Error code = ");
Serial.println(mqttClient.connectError());
while (1)
;
}
Serial.println("You're connected to the MQTT broker!");
Serial.print("Subscribing to topic: ");
Serial.println("sensorTopic");
mqttClient.subscribe(sensorTopic); // 订阅雷达主题
return;
default:
Serial.print("[WiFi] WiFi Status: ");
Serial.println(WiFi.status());
break;
}
delay(tryDelay);
if (numberOfTries <= 0) {
Serial.println("[WiFi] Failed to connect to WiFi!");
WiFi.disconnect();
return;
} else {
numberOfTries--;
}
}
}
void loop() {
// 保证处理 MQTT 消息
mqttClient.poll();
if (ledOn) {
// 点亮红色 LED
pixels.setPixelColor(0, pixels.Color(255, 0, 0)); // 设置为红色
pixels.show(); // 更新 LED 显示
// 播放 WAV 数据
for (size_t i = 0; i < wavDataSize; i++) {
i2s.write(rawData[i]); // 写入样本到 I2S
}
mqttClient.beginMessage(sensorTopic);
mqttClient.print("1");
mqttClient.endMessage();
} else {
// 关闭 LED
pixels.setPixelColor(0, pixels.Color(0, 0, 0)); // 关闭 LED
pixels.show();
mqttClient.beginMessage(sensorTopic);
mqttClient.print("0");
mqttClient.endMessage();
}
delay(5000); // 添加一个小延迟，避免过于频繁的读取
}
In the above code, <WiFi.h> and <ArduinoMqttClient.h> are used to initialize the WiFi connection and MQTT connection. After the connection is successful, the radar topic in the Raspberry Pi MQTT will be subscribed to publish the radar status.
When the radar detects a person, it sends 1, otherwise it sends 0. Then use HA to monitor the change of this state to control the behavior of the sensor
Next we edit the HA configuration file to configure a binary sensor as shown below.
binary_sensor:
- name: "Radar Motion Sensor"
unique_id: "binary_sensor_radar_motion"
state_topic: "radar"
payload_on: "1"
payload_off: "0"
device_class: motion
Then reload the HA configuration
Now we can find the radar configuration options in the HA sensor list.
After that, we can view the update of radar status in the main interface (need to refresh the page)
The attachments are as follows:
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