I2C Temperature and Humidity Sensor

1

Hi

Does anyone have code or libraries to get this to work on the RPI Pico using micropython?

Thanks

1 Like
2

Hi Clint,

I took a look and it seems no-one has ported this one to MicroPython :frowning:

Though the product wiki gives some simple example code that could be ported over to a Pico easily:

#include "Wire.h"
#define address 0x40
char dtaUart[15];
char dtaLen = 0;
uint8_t Data[100] = {0};
uint8_t buff[100] = {0};
void setup()
{
  Serial.begin(9600);
  Wire.begin();
}
uint8_t buf[4] = {0};
uint16_t data, data1;
float temp;
float hum;
void loop()
{
  readReg(0x00, buf, 4);
  data = buf[0] << 8 | buf[1];
  data1 = buf[2] << 8 | buf[3];
  temp = ((float)data * 165 / 65535.0) - 40.0;
  hum =  ((float)data1 / 65535.0) * 100;
  Serial.print("temp(C):");
  Serial.print(temp);
  Serial.print("\t");
  Serial.print("hum(%RH):");
  Serial.println(hum);
  delay(500);
}
uint8_t readReg(uint8_t reg, const void* pBuf, size_t size)
{
  if (pBuf == NULL) {
    Serial.println("pBuf ERROR!! : null pointer");
  }
  uint8_t * _pBuf = (uint8_t *)pBuf;
  Wire.beginTransmission(address);
  Wire.write(&reg, 1);
  if ( Wire.endTransmission() != 0) {
    return 0;
  }
  delay(20);
  Wire.requestFrom(address, (uint8_t) size);
  for (uint16_t i = 0; i < size; i++) {
    _pBuf[i] = Wire.read();
  }
  return size;
}

All our product design team (the ones that would usually consider making a port) are tied up with our PiicoDev and other ranges, but we’re happy to help with any snags you have if you want to give this a crack yourself :slight_smile:

2 Likes
3

Hi Clint,

ChatGPT is pretty handy for porting small libraries like this (GPT4 ought to work if ChatGPT doesn’t).

1 Like
4

Thanks James - I will have a crack.

1 Like
5

Thanks Liam - I will try ChatGPT

1 Like