I2C Not working with MPU6050 on BLE Nano 2

[jcbooth2]

Hello,

When I use the following code in Arduino environment, there is no signal at all on either SDA or SCL line. I checked it with an oscilloscope.

From what I have researched, the I2C is not very reliable with BLE Nano 1 or 2. I know that the Nano 1 had a problem with a specific setting in the 'i2c_api.c' file as described by this post. I am wondering if there is a similar fix for the BLE Nano 2, or if someone has had a similar problem?

`#include<Wire.h>
#include<nRF5x_BLE_API.h>

const uint8_t MPU_ADDR = 0x68;
int16_t acc[3], gyro[3], temp;

void setup()
{
Wire.begin(D3, D2, TWI_FREQUENCY_100K);
Wire.beginTransmission(MPU_ADDR);
Wire.write(0x6B); // PWR_MGMT_1 register
Wire.write(0); // set to zero (wakes up the MPU-6050)
Wire.endTransmission(true);

Serial.begin(9600);
}

void loop()
{
Wire.beginTransmission(MPU_ADDR);
Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H)
Wire.requestFrom(MPU_ADDR,14,true); // request a total of 14 registers
acc[0]= Wire.read()<<8|Wire.read();
acc[1]= Wire.read()<<8|Wire.read();
acc[2]= Wire.read()<<8|Wire.read();
temp = Wire.read()<<8|Wire.read();
gyro[0]= Wire.read()<<8|Wire.read();
gyro[1]= Wire.read()<<8|Wire.read();
gyro[2]= Wire.read()<<8|Wire.read();

Serial.print("AcX = "); Serial.print(acc[0]);
Serial.print(" | AcY = "); Serial.print(acc[1]);
Serial.print(" | AcZ = "); Serial.print(acc[2]);
Serial.print(" | Tmp = "); Serial.print(temp/340.00+36.53); //equation for temperature in degrees C from datasheet
Serial.print(" | GyX = "); Serial.print(gyro[0]);
Serial.print(" | GyY = "); Serial.print(gyro[1]);
Serial.print(" | GyZ = "); Serial.println(gyro[2]);

delay(333);
}`