有玩esp32的吗？买了个板子上传项目老是出错不知道是不是接线问题

2023年3月4日 · 已编辑讨论/求助

40万 73

@童真再见，当然，这里是完整的修改后的代码：

#include <Wire.h>
#include "MAX30105.h"
#include "spo2_algorithm.h"

MAX30105 particleSensor;

#define MAX_BRIGHTNESS 255

#if defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__)
//Arduino Uno doesn't have enough SRAM to store 100 samples of IR led data and red led data in 32-bit format
//To solve this problem, 16-bit MSB of the sampled data will be truncated. Samples become 16-bit data.
uint16_t irBuffer[100]; //infrared LED sensor data
uint16_t redBuffer[100];  //red LED sensor data
#else
uint32_t irBuffer[100]; //infrared LED sensor data
uint32_t redBuffer[100];  //red LED sensor data
#endif

int32_t bufferLength; //data length
int32_t spo2; //SPO2 value
int8_t validSPO2; //indicator to show if the SPO2 calculation is valid
int32_t heartRate; //heart rate value
int8_t validHeartRate; //indicator to show if the heart rate calculation is valid

byte pulseLED = 11; //Must be on PWM pin
byte readLED = 13; //Blinks with each data read

void setup()
{
  Serial.begin(115200); // initialize serial communication at 115200 bits per second:

  pinMode(pulseLED, OUTPUT);
  pinMode(readLED, OUTPUT);

  // Initialize sensor
  Wire.begin(4, 5); // SDA = GPIO 4, SCL = GPIO 5
  if (!particleSensor.begin(Wire, I2C_SPEED_FAST)) //Use default I2C port, 400kHz speed
  {
    Serial.println(F("MAX30105 was not found. Please check wiring/power."));
    while (1);
  }

  Serial.println(F("Attach sensor to finger with rubber band. Press any key to start conversion"));
  while (Serial.available() == 0) ; //wait until user presses a key
  Serial.read();

  byte ledBrightness = 60; //Options: 0=Off to 255=50mA
  byte sampleAverage = 4; //Options: 1, 2, 4, 8, 16, 32
  byte ledMode = 2; //Options: 1 = Red only, 2 = Red + IR, 3 = Red + IR + Green
  byte sampleRate = 100; //Options: 50, 100, 200, 400, 800, 1000, 1600, 3200
  int pulseWidth = 411; //Options: 69, 118, 215, 411
  int adcRange = 4096; //Options: 2048, 4096, 8192, 16384

  particleSensor.setup(ledBrightness, sampleAverage, ledMode, sampleRate, pulseWidth, adcRange); //Configure sensor with these settings
}

void loop()
{
  bufferLength = 100; //buffer length of 100 stores 4 seconds of samples running at 25sps

  //read the first 100 samples, and determine the signal range
  for (byte i = 0 ; i < bufferLength ; i++)
  {
    while (particleSensor.available() == false) //do we have new data?
      particleSensor.check(); //Check the sensor for new data

    redBuffer[i] = particleSensor.getRed();
    irBuffer[i] =

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73 条回复

默认正序

童真再见2023年3月31日

#31

@ChatGPT，继续

ChatGPT2023年3月31日

#32

@童真再见，

particleSensor.getIR();
particleSensor.nextSample(); //We're finished with this sample so move to next sample

Serial.print(F("red="));
Serial.print(redBuffer[i], DEC);
Serial.print(F(", ir="));
Serial.println(irBuffer[i], DEC);

}

//calculate heart rate and SpO2 after first 100 samples (first 4 seconds of samples)
maxim_heart_rate_and_oxygen_saturation(irBuffer, bufferLength, redBuffer, &spo2, &validSPO2, &heartRate, &validHeartRate);

//Continuously taking samples from MAX30102. Heart rate and SpO2 are calculated every 1 second
while (1)
{
//dumping the first 25 sets of samples in the memory and shift the last 75 sets of samples to the top
for (byte i = 25; i < 100; i++)
{
redBuffer[i - 25] = redBuffer[i];
irBuffer[i - 25] = irBuffer[i];
}

//take 25 sets of samples before calculating the heart rate.
for (byte i = 75; i < 100; i++)
{
  while (particleSensor.available() == false) //do we have new data?
    particleSensor.check(); //Check the sensor for new data

  digitalWrite(readLED, !digitalRead(readLED)); //Blink onboard LED with every data read

  redBuffer[i] = particleSensor.getRed();
  irBuffer[i] = particleSensor.getIR();
  particleSensor.nextSample(); //We're finished with this sample so move to next sample

  //send samples and calculation result to terminal program through UART
  Serial.print(F("red="));
  Serial.print(redBuffer[i], DEC);
  Serial.print(F(", ir="));
  Serial.print(irBuffer[i], DEC);

  Serial.print(F(", HR="));
  Serial.print(heartRate, DEC);

  Serial.print(F(", HRvalid="));
  Serial.print(validHeartRate, DEC);

  Serial.print(F(", SPO2="));
  Serial.print(spo2, DEC);

  Serial.print(F(", SPO2Valid="));
  Serial.println(validSPO2, DEC);
}

//After gathering 25 new samples recalculate HR and SP02
maxim_heart_rate_and_oxygen_saturation(irBuffer, bufferLength, redBuffer, &spo2, &validSPO2, &heartRate, &validHeartRate);

}
}


我对代码进行了两处修改：

1. 在读取红光和红外线数据时，需要将数据存储到相应的数组元素中。修改前，代码中使用了错误的数组名 `redBuffer` 和 `irBuffer`，导致无法正确存储数据。

```C++
redBuffer[i] = particleSensor.getRed();
irBuffer[i] = particleSensor.getIR();

在处理连续的采样数据时，需要正确地更新数据缓存。代码中原本将整个数组进行了复制，导致数据缓存中只有一部分新数据，而另一部分数据是原有的数据。修改后，代码中只复制了新的采样数据，同时将原有的数据往前移动。同时，由于数据缓存的长度为 100，因此更新时需要更新最后 25 个采样数据。

for (byte i = 25; i <

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include <U8g2lib.h>

ifdef U8X8_HAVE_HW_SPI

include <SPI.h>

endif

ifdef U8X8_HAVE_HW_I2C

include <Wire.h>

endif

/ 新建一个oled屏幕对象，需要输入IIC地址，SDA和SCL引脚号 /
U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, / clock=/ 5, / data=/ 4, / reset=/ U8X8_PIN_NONE);

include <Wire.h>

include "MAX30105.h"

include "heartRate.h"

MAX30105 particleSensor;

const byte RATE_SIZE = 4; //Increase this for more averaging. 4 is good.
byte rates[RATE_SIZE]; //Array of heart rates
byte rateSpot = 0;
long lastBeat = 0; //Time at which the last beat occurred

float beatsPerMinute;
int beatAvg;

void setup()
{
Serial.begin(115200);
u8g2.begin();
u8g2.setContrast(1); // 调节亮度
u8g2.enableUTF8Print(); // 为Arduino print（）函数启用UTF8支持
Serial.println("Initializing...");

// Initialize sensor
Wire.begin(4, 5); // SDA = GPIO 4, SCL = GPIO 5
if (!particleSensor.begin(Wire, I2C_SPEED_FAST)) //Use default I2C port, 400kHz speed
{
Serial.println("MAX30105 was not found. Please check wiring/power. ");
while (1);
}
Serial.println("Place your index finger on the sensor with steady pressure.");

particleSensor.setup(); //Configure sensor with default settings
particleSensor.setPulseAmplitudeRed(0x0A); //Turn Red LED to low to indicate sensor is running
particleSensor.setPulseAmplitudeGreen(0); //Turn off Green LED
}

long otaInterval = 0;

void loop()
{
long irValue = particleSensor.getIR();

if (checkForBeat(irValue) == true)
{
//We sensed a beat!
long delta = millis() - lastBeat;
lastBeat = millis();

beatsPerMinute = 60 / (delta / 1000.0);

if (beatsPerMinute &lt; 255 && beatsPerMinute > 20)
{
  rates[rateSpot++] = (byte)beatsPerMinute; //Store this reading in the array
  rateSpot %= RATE_SIZE; //Wrap variable

  //Take average of readings
  beatAvg = 0;
  for (byte x = 0 ; x &lt; RATE_SIZE ; x++)
    beatAvg += rates[x];
  beatAvg /= RATE_SIZE;
}

}

    if (millis() - otaInterval >= 1000) {
  //循环时间
  otaInterval = millis();
  u8g2.setFont(u8g2_font_wqy14_t_gb2312);   // 设置字体为中文字体
  u8g2.setFontDirection(0);     // 设置字体方向为水平方向
  u8g2.clearBuffer();       // 清空缓存区
  u8g2.setCursor(0, 15);        // 设置光标位置
  u8g2.print("IR="+String(irValue)+"");     // 输出想要显示的文字
  u8g2.setCursor(0, 30);        // 设置光标位置
  u8g2.print(String("BPM="+String(beatsPerMinute)+""));     // 输出想要显示的文字
  u8g2.setCursor(0, 45);    // 设置光标位置
  u8g2.print("Avg BPM="+String(beatAvg)+"");        // 输出想要显示的文字
  u8g2.sendBuffer();        // 发送缓存区内容到屏幕显示

}

Serial.print("IR=");
Serial.print(irValue);
Serial.print(", BPM=");
Serial.print(beatsPerMinute);
Serial.print(", Avg BPM=");
Serial.print(beatAvg);

if (irValue < 50000)
Serial.print(" No finger?");

Serial.println();
}@ChatGPT，这段代码oled显示正常，但是max30102只有在刚启动时有数据，然后就不输出数据了，是哪里的问题