【Follow me第二季第2期】Arduino UNO R4 WiFi跟我一起练
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本帖最后由 90houyidai 于 2024-11-1 23:16 编辑
Arduino UNO R4 WiFi 是一款基于32位Arm® Cortex®-M4 Renesas RA4M1微控制器，具有用于 Wi-Fi® 和蓝牙连接的ESP32模块，具备强大的计算能力和多种连接功能。该板SRAM 32kB，闪存256kB，时钟频率为48MHz，USB端口升级为USB-C，并且最大电源供应电压增加到24V。该板提供了一个CAN总线，允许用户通过连接多个扩展板来最小化布线并执行不同的任务。板载的Qwiic 连接器可以方便地创建即插即用风格的项目。
使用到资料
• Arduino UNO R4 WiFi数据手册
• Arduino UNO R4 WiFi原理图
• Arduino UNO R4 WiFi引脚图
• RA4M1数据手册
• RA4M1硬件用户手册
• SHT40数据手册
Temp Graph with UNO R4 and SHT40 - Software Deep Dive - Hackster.io
Home Assistant获取DHT11温湿度-CSDN博客
开发环境：Arduino IDE Nightly Builds
使用到的库：
Adafruit_SHT4x、ArduinoMqttClient
使用到的硬件：
主板：Arduino UNO R4 WiFi（核心板）
扩展板：4885（SHT40温湿度传感器扩展板）
缆线：PRT-14426（Qwiic缆线-50mm）
简单开箱
入门任务（必做）：搭建环境并开启第一步Blink / 串口打印Hello EEWorld！
#include "Arduino_LED_Matrix.h"
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200);
}
// the loop function runs over and over again forever
void loop() {
Serial.write("Hello ");
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(500); // wait for a second
Serial.write("EEWorld\r\n");
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(500); // wait for a second
}
基础任务（必做）：
一、驱动12x8点阵LED；
#include "Arduino_LED_Matrix.h"
#include <stdint.h>
#include "opamp.h"
ArduinoLEDMatrix matrix;
const uint32_t animation[][4] = {
{
0x2006,
0x200200,
0x20070000,
1000
},
{
0x6009,
0x200400,
0x800f0000,
1000
},
{
0xe001,
0xe00100,
0x100e0000,
1000
}
};
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200);
matrix.autoscroll(2000);
matrix.loadSequence(animation);
matrix.begin();
// turn on autoscroll to avoid calling next() to show the next frame; the parameter is in milliseconds
//matrix.autoscroll(2000);
matrix.play(true);
OPAMP.begin(OPAMP_SPEED_HIGHSPEED);
}
// the loop function runs over and over again forever
void loop() {
Serial.write("Hello ");
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
Serial.write("EEWorld\r\n");
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
可以使用https://ledmatrix-editor.arduino.cc/生成需要的显示图形和动画
二、用DAC生成正弦波；
#include "analogWave.h" // Include the library for analog waveform generation
analogWave wave(DAC); // Create an instance of the analogWave class, using the DAC pin
int freq = 10; // in hertz, change accordingly
void setup() {
Serial.begin(115200); // Initialize serial communication at a baud rate of 115200
wave.sine(freq); // Generate a sine wave with the initial frequency
}
void loop() {
// Read an analog value from pin A5 and map it to a frequency range
//freq = map(analogRead(A5), 0, 1024, 0, 10000);
// Print the updated frequency to the serial monitor
Serial.println("Frequency is now " + String(freq) + " hz");
wave.freq(freq); // Set the frequency of the waveform generator to the updated value
delay(1000); // Delay for one second before repeating
}
三、用OPAMP放大DAC信号；
#include "Arduino_LED_Matrix.h"
#include <stdint.h>
#include <OPAMP.h>
ArduinoLEDMatrix matrix;
const uint32_t animation[][4] = {
{
0x2006,
0x200200,
0x20070000,
1000
},
{
0x6009,
0x200400,
0x800f0000,
1000
},
{
0xe001,
0xe00100,
0x100e0000,
1000
}
};
uint16_t sin_index;
//正弦波单个周期的点数
#define POINT_NUM 32
/* 波形数据 -----------------------------------------------*/
const uint16_t Sine12bit[POINT_NUM] = {
2048 , 2460 , 2856 , 3218 , 3532 , 3786 , 3969 , 4072 ,
4093 , 4031 , 3887 , 3668 , 3382 , 3042 , 2661 , 2255 ,
1841 , 1435 , 1054 , 714 , 428 , 209 , 65 , 3 ,
24 , 127 , 310 , 564 , 878 , 1240 , 1636 , 2048
};
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200);
matrix.autoscroll(2000);
matrix.loadSequence(animation);
matrix.begin();
// turn on autoscroll to avoid calling next() to show the next frame; the parameter is in milliseconds
//matrix.autoscroll(2000);
matrix.play(true);
analogWriteResolution(12);//change this write resolution up to 12-bits
OPAMP.begin(OPAMP_SPEED_HIGHSPEED);
}
// the loop function runs over and over again forever
void loop() {
#if 0
Serial.write("Hello ");
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
analogWrite(A0, 123);
delay(1000); // wait for a second
Serial.write("EEWorld\r\n");
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
analogWrite(A0, 0);
Serial.write("A1_input:%d\r\n",analogRead(A1));
delay(1000); // wait for a second
#else
analogWrite(A5, Sine12bit[sin_index++%POINT_NUM]>>2);//输出正弦波
delay(1);
#endif
}
四、用ADC采集并且打印数据到串口等其他接口可上传到上位机显示曲线
#include "analogWave.h"
analogWave wave(DAC);
int freq = 1000;
// These constants won't change. They're used to give names to the pins used:
const int analogInPin = A1; // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; // Analog output pin that the LED is attached to
int sensorValue = 0; // value read from the pot
int outputValue = 0; // value output to the PWM (analog out)
void setup() {
// initialize serial communications at 9600 bps:
Serial.begin(115200);
wave.sine(freq);
}
void loop() {
// read the analog in value:
sensorValue = analogRead(analogInPin);
// map it to the range of the analog out:
outputValue = map(sensorValue, 0, 1023, 0, 255);
// change the analog out value:
analogWrite(analogOutPin, outputValue);
// print the results to the Serial Monitor:
//Serial.print("sensor = ");
Serial.println(sensorValue);
//Serial.print("\t output = ");
//Serial.println(outputValue);
// wait 2 milliseconds before the next loop for the analog-to-digital
// converter to settle after the last reading:
delay(2);
}
进阶任务（必做）：通过Wi-Fi，利用MQTT协议接入到开源的智能家居平台HA（HomeAssistant）
#include <ArduinoMqttClient.h>
#if defined(ARDUINO_SAMD_MKRWIFI1010) || defined(ARDUINO_SAMD_NANO_33_IOT) || defined(ARDUINO_AVR_UNO_WIFI_REV2)
#include <WiFiNINA.h>
#elif defined(ARDUINO_SAMD_MKR1000)
#include <WiFi101.h>
#elif defined(ARDUINO_ARCH_ESP8266)
#include <ESP8266WiFi.h>
#elif defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)
#include <WiFi.h>
#elif defined(ARDUINO_PORTENTA_C33)
#include <WiFiC3.h>
#elif defined(ARDUINO_UNOR4_WIFI)
#include <WiFiS3.h>
#endif
#include "arduino_secrets.h"
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password (use for WPA, or use as key for WEP)
// To connect with SSL/TLS:
// 1) Change WiFiClient to WiFiSSLClient.
// 2) Change port value from 1883 to 8883.
// 3) Change broker value to a server with a known SSL/TLS root certificate
// flashed in the WiFi module.
WiFiClient wifiClient;
MqttClient mqttClient(wifiClient);
const char broker[] = "192.168.110.23";//"core-mosquitto";//"test.mosquitto.org";
int port = 1883;
const char topic[] = "office/sensor_sht40";
const long interval = 1000;
unsigned long previousMillis = 0;
int count = 0;
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// attempt to connect to WiFi network:
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
while (WiFi.begin(ssid, pass) != WL_CONNECTED) {
// failed, retry
Serial.print(".");
delay(5000);
}
Serial.println("You're connected to the network");
Serial.println();
Serial.println(WiFi.localIP());
// You can provide a unique client ID, if not set the library uses Arduino-millis()
// Each client must have a unique client ID
mqttClient.setId("clientId");
// You can provide a username and password for authentication
mqttClient.setUsernamePassword("uno", "uno");
Serial.print("Attempting to connect to the MQTT broker: ");
Serial.println(broker);
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.println();
}
void loop() {
// call poll() regularly to allow the library to send MQTT keep alives which
// avoids being disconnected by the broker
mqttClient.poll();
// to avoid having delays in loop, we'll use the strategy from BlinkWithoutDelay
// see: File -> Examples -> 02.Digital -> BlinkWithoutDelay for more info
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
// save the last time a message was sent
previousMillis = currentMillis;
Serial.print("Sending message to topic: ");
Serial.println(topic);
Serial.print("temperature: ");
Serial.println(count);
Serial.print("humidity: ");
Serial.println(count);
// send message, the Print interface can be used to set the message contents
mqttClient.beginMessage(topic);
mqttClient.print("temperature: ");
mqttClient.print(count);
mqttClient.print("humidity: ");
mqttClient.print(count);
mqttClient.endMessage();
Serial.println();
count++;
}
}
扩展任务：通过外部SHT40温湿度传感器，上传温湿度到HA，通过HA面板显示数据
#include <ArduinoMqttClient.h>
#if defined(ARDUINO_SAMD_MKRWIFI1010) || defined(ARDUINO_SAMD_NANO_33_IOT) || defined(ARDUINO_AVR_UNO_WIFI_REV2)
#include <WiFiNINA.h>
#elif defined(ARDUINO_SAMD_MKR1000)
#include <WiFi101.h>
#elif defined(ARDUINO_ARCH_ESP8266)
#include <ESP8266WiFi.h>
#elif defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_GIGA) || defined(ARDUINO_OPTA)
#include <WiFi.h>
#elif defined(ARDUINO_PORTENTA_C33)
#include <WiFiC3.h>
#elif defined(ARDUINO_UNOR4_WIFI)
#include <WiFiS3.h>
#endif
#include "Adafruit_SHT4x.h"
#include "arduino_secrets.h"
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password (use for WPA, or use as key for WEP)
// To connect with SSL/TLS:
// 1) Change WiFiClient to WiFiSSLClient.
// 2) Change port value from 1883 to 8883.
// 3) Change broker value to a server with a known SSL/TLS root certificate
// flashed in the WiFi module.
WiFiClient wifiClient;
MqttClient mqttClient(wifiClient);
const char broker[] = "homeassistant.local";//"core-mosquitto";//"test.mosquitto.org";
int port = 1883;
const char topic[] = "office/sensor_sht40";
const long interval = 1000;
unsigned long previousMillis = 0;
int count = 0;
Adafruit_SHT4x sht4 = Adafruit_SHT4x();
float temperature_date,humidity_date;
sensors_event_t humidity, temp;
static TwoWire& SHT_I2C_INTERFACE = Wire1; // Wire1 = Uno R4 QWIIC port
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("SHT40 test");
if (! sht4.begin(&SHT_I2C_INTERFACE)) {
Serial.println("Couldn't find SHT40");
while (1) delay(1);
}
Serial.println("Found SHT40 sensor");
Serial.print("Serial number 0x");
Serial.println(sht4.readSerial(), HEX);
// You can have 3 different precisions, higher precision takes longer
sht4.setPrecision(SHT4X_HIGH_PRECISION);
switch (sht4.getPrecision()) {
case SHT4X_HIGH_PRECISION:
Serial.println("High precision");
break;
case SHT4X_MED_PRECISION:
Serial.println("Med precision");
break;
case SHT4X_LOW_PRECISION:
Serial.println("Low precision");
break;
}
// You can have 6 different heater settings
// higher heat and longer times uses more power
// and reads will take longer too!
sht4.setHeater(SHT4X_NO_HEATER);
switch (sht4.getHeater()) {
case SHT4X_NO_HEATER:
Serial.println("No heater");
break;
case SHT4X_HIGH_HEATER_1S:
Serial.println("High heat for 1 second");
break;
case SHT4X_HIGH_HEATER_100MS:
Serial.println("High heat for 0.1 second");
break;
case SHT4X_MED_HEATER_1S:
Serial.println("Medium heat for 1 second");
break;
case SHT4X_MED_HEATER_100MS:
Serial.println("Medium heat for 0.1 second");
break;
case SHT4X_LOW_HEATER_1S:
Serial.println("Low heat for 1 second");
break;
case SHT4X_LOW_HEATER_100MS:
Serial.println("Low heat for 0.1 second");
break;
}
// attempt to connect to WiFi network:
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
while (WiFi.begin(ssid, pass) != WL_CONNECTED) {
// failed, retry
Serial.print(".");
delay(5000);
}
Serial.println("You're connected to the network");
Serial.println();
Serial.println(WiFi.localIP());
// You can provide a unique client ID, if not set the library uses Arduino-millis()
// Each client must have a unique client ID
mqttClient.setId("clientId");
// You can provide a username and password for authentication
mqttClient.setUsernamePassword("uno", "uno");
Serial.print("Attempting to connect to the MQTT broker: ");
Serial.println(broker);
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.println();
}
void loop() {
// call poll() regularly to allow the library to send MQTT keep alives which
// avoids being disconnected by the broker
mqttClient.poll();
// to avoid having delays in loop, we'll use the strategy from BlinkWithoutDelay
// see: File -> Examples -> 02.Digital -> BlinkWithoutDelay for more info
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
// save the last time a message was sent
previousMillis = currentMillis;
Serial.print("Sending message to topic: ");
Serial.println(topic);
// Serial.print("temperature:");
// Serial.println(temperature_date);
// Serial.print("humidity: ");
// Serial.println(humidity_date);
uint32_t timestamp = millis();
sht4.getEvent(&humidity, &temp);// populate temp and humidity objects with fresh data
timestamp = millis() - timestamp;
Serial.print("Temperature: "); Serial.print(temp.temperature); Serial.println(" degrees C");
Serial.print("Humidity: "); Serial.print(humidity.relative_humidity); Serial.println("% rH");
Serial.print("Read duration (ms): ");
Serial.println(timestamp);
temperature_date=temp.temperature;
humidity_date=humidity.relative_humidity;
// send message, the Print interface can be used to set the message contents
mqttClient.beginMessage(topic);
mqttClient.println("{");
mqttClient.print(" \"temperature\":");
mqttClient.print(temperature_date);
mqttClient.println(",");
mqttClient.print(" \"humidity\":");
mqttClient.println(humidity_date);
mqttClient.print("}");
mqttClient.endMessage();
Serial.println();
count+=0.01;
}
}
软件流程图
代码包
（4）对本活动的心得体会（包括意见或建议）
本次活动让我接触到了Home Assistant 智能家居系统，这个系统感觉功能很强大，有很多好玩的插件，值得好好探索；
Arduino UNO R4 WiFi借助ESP32完成wifi操作，可玩性大大提高，MCU可以做自己的任务。
另外提个小意见，展示视频自我介绍好社恐
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