WeMos D1 R2 and the Arduino 9-Axis Shield
Posted: Mon Jun 05, 2017 8:23 pmI was wondering if anyone has gotten the WeMos D1 R2 to work with the Bosch 9-Axis shield. I have verified that the shield works with the 5V Arduino Mega and the 3.3V DUE but I can't get it to work with the WeMos.
I scoped the SDA and SLC lines and these look reasonable but the I2C Scanner code does not find the shield at address 0x28 like the DUE or Mega do.
Thanks
Kurt
I scoped the SDA and SLC lines and these look reasonable but the I2C Scanner code does not find the shield at address 0x28 like the DUE or Mega do.
Code: Select all
#include <Wire.h>
void setup()
{
Wire.begin(D2,D1); //(SDA,SCL)
Serial.begin(115200);
while (!Serial); // Leonardo: wait for serial monitor
Serial.println("\nI2C Scanner");
}
void loop()
{
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Serial.print("I2C scan address 0x"); Serial.print("0");
Serial.print(address,HEX);
Serial.print(" ! error=");
Wire.beginTransmission(address);
error = Wire.endTransmission();
Serial.println(error);
if (error == 0)
{
Serial.print("I2C device found at address 0x");
if (address<16)
Serial.print("0");
Serial.print(address,HEX);
Serial.println(" !");
nDevices++;
}
else if (error==4)
{
Serial.print("Unknow error at address 0x");
if (address<16)
Serial.print("0");
Serial.println(address,HEX);
}
}
if (nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");
// delay(5000); // wait 5 seconds for next scan
}Thanks
Kurt