Hi all,
I am having trouble successfully finding/connecting to a few VEML6075 UV sensor breakout’s that I’m wanting to constantly read values from.
I have the VEML6075s connected to SD/SC ports 0-3 on the Adafuit TCA954BA multiplexer, When plugged in all UV senors are lighting up and appear to be connected properly.
When running the following code, it prints out
TCA Port #0
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #1
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #2
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #3
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #4
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #5
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #6
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
TCA Port #7
Failed to communicate with VEML6075 sensor1, check wiring?
Failed to communicate with VEML6075 sensor2, check wiring?
Failed to communicate with VEML6075 sensor3, check wiring?
Failed to communicate with VEML6075 sensor4, check wiring?
Here is the code I’m using:
#include <SparkFun_VEML6075_Arduino_Library.h>
#include <Wire.h>
#define TCAADDR1 0x70 //Multiplexer 1
VEML6075 uv_1; // Create VEML6075 object 1
VEML6075 uv_2; // Create VEML6075 object 2
VEML6075 uv_3; // Create VEML6075 object 3
VEML6075 uv_4; // Create VEML6075 object 4
void tcaselect(uint8_t i) {
if (i > 7) return;
Wire.beginTransmission(TCAADDR1);
Wire.write(1 << i);
Wire.endTransmission();
}
void setup(void)
{
Serial.begin(115200);
Wire.begin();
for (uint8_t t=0; t<8; t++) {
tcaselect(t);
Serial.print("TCA Port #"); Serial.println(t);
if(uv_1.begin() != VEML6075_SUCCESS)
{
// There was a problem detecting the VEML6075 ... check your connections
Serial.println("Failed to communicate with VEML6075 sensor1, check wiring?");
}
if(uv_2.begin(Wire) != VEML6075_SUCCESS)
{
// There was a problem detecting the VEML6075 ... check your connections
Serial.println("Failed to communicate with VEML6075 sensor2, check wiring?");
}
if(uv_3.begin(Wire) != VEML6075_SUCCESS)
{
// There was a problem detecting the VEML6075 ... check your connections
Serial.println("Failed to communicate with VEML6075 sensor3, check wiring?");
}
if(uv_4.begin(Wire) != VEML6075_SUCCESS)
{
// There was a problem detecting the VEML6075 ... check your connections
Serial.println("Failed to communicate with VEML6075 sensor4, check wiring?");
}
}
}
void loop(void)
{
}
Any ideas of what could be going on? Any help is greatly appreciated. Thanks in advance!