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• bmi160

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• bmi160

  in Other Boards • 4 years, 3 months

  

  Thank you for all responses,

  They read the sensor ready data like this

          rslt = bme280_set_regs(&reg_addr, &soft_rst_cmd, 1, dev);
  
         (rslt == BME280_OK)
         //BME280_OK = INT8_C(0)
  

  I did:

  var ERR_REG = 0x02;//According to docs at page 49
   var adr = 0x69;
   var len = 5;// 
  I2C1.writeTo(adr,ERR_REG);
    var response = toHexString(I2C1.readFrom(adr,16)).slice­(0,len);
     //Response = 00000
  

  

  If the data is correct 5 zero bit is tells sensor is working correct

  But when I tried to get chip id with same code with len = 7 I get 1414240 (Without converting to hex [ 20, 20, 36, 4, 10, 24, 72 ]). In the driver I must get UINT8_C(0x60) or 0x60 the thing is is 0x60 equal to 1414240 ? or am I converting wrong?

  
  

• bmi160

  in Other Boards • 4 years, 3 months

  

  Hi, I bought bosh bmi160 Gyro & accelerometer but I couldnt find any module in espruino module page. I did some research found docs for sensor. I tried i2c connection I am able to write data and see data changing with different commands given in docs. The problem is when I read console by interval function I get uint8Array I dont know what to do with it I tried to convert to hex I got different data with different commands. According to Bosh Docs (I put link to bottom) if I send 0x00 I will read chipId I sended code with following code

  I2C1.setup({ scl : NodeMCU.D6, sda: NodeMCU.D5});
  
  function toHexString (byteArray) {
    const chars = new Uint8Array(byteArray.length * 2);
    const alpha = 'a'.charCodeAt(0) - 10;
    const digit = '0'.charCodeAt(0);
  
    let p = 0;
    for (let i = 0; i < byteArray.length; i++) {
        let nibble = byteArray[i] >>> 4;
        chars[p++] = nibble > 9 ? nibble + alpha : nibble + digit;
        nibble = byteArray[i] & 0xF;
        chars[p++] = nibble > 9 ? nibble + alpha : nibble + digit;    
    }
    return String.fromCharCode.apply(null, chars);
  }
  
  setInterval(function() {
      var uint = I2C1.readFrom(0x69,16);
      var hex = toHexString(uint);
      console.log(uint);
      console.log(hex);
  })
  

  Result:

  d1210000000000000000000000000000
  
  new Uint8Array([209, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
  ...
  

  

  https://www.bosch-sensortec.com/media/bo­schsensortec/downloads/datasheets/bst-bm­i160-ds000.pdf#page=19

  Sorry about my english I tried my best

• Ultrasonic HC-SR04 outputs incorrect dist value

  in ESP8266 • 4 years, 7 months

  

  Same here guys. Data seems clean for second when I disconnected and connect echo pin again