1 files changed, 132 insertions, 0 deletions
diff --git a/color_sensor/color_sensor.ino b/color_sensor/color_sensor.ino
new file mode 100644
index 0000000..dd1c68d
--- /dev/null
+++ b/color_sensor/color_sensor.ino
@@ -0,0 +1,132 @@
+/**
+i2c port scanner based on:
+  in wire library examples i2c_scanner
+  https://learn.adafruit.com/adafruit-pca9548-8-channel-stemma-qt-qwiic-i2c-multiplexer/arduino
+
+color sensor based on±
+  adafruit TCS34725 librarys
+ *
+ */
+
+#include <Wire.h>                  //https://www.arduino.cc/reference/en/language/functions/communication/wire/
+#include "Adafruit_TCS34725.h"    //https://github.com/adafruit/Adafruit_TCS34725
+
+#define PCAADDR 0x70    //i2c address of the i2c multiplexer
+
+Adafruit_TCS34725 tcs = Adafruit_TCS34725();
+
+//color sensors vars
+int r1 = 1;
+int g1 = 1;
+int b1 = 1;
+int r2 = 1;
+int g2 = 1;
+int b2 = 1;
+int r3 = 1;
+int g3 = 1;
+int b3 = 1;
+int r4 = 1;
+int g4 = 1;
+int b4 = 1;
+int r5 = 1;
+int g5 = 1;
+int b5 = 1;
+int r6 = 1;
+int g6 = 1;
+int b6 = 1;
+
+
+void setup() {
+  Serial.begin(115200);
+  while (!Serial); // Leonardo: wait for Serial Monitor
+  Serial.println("\nI2C Scanner");
+
+}
+
+void pcaselect(uint8_t i) {
+  if (i > 7) return;
+ 
+  Wire.beginTransmission(PCAADDR);
+  Wire.write(1 << i);
+  Wire.endTransmission();  
+}
+void scandirectports(){
+  Wire.begin();
+  int nDevices = 0;
+  Serial.println("Scanning for i2c ports on board...");
+
+  for (byte address = 1; address < 127; ++address) {
+    // The i2c_scanner uses the return value of
+    // the Wire.endTransmission to see if
+    // a device did acknowledge to the address.
+    Wire.beginTransmission(address);
+    byte error = Wire.endTransmission();
+
+    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("Unknown 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");
+  }
+}
+
+
+
+void loop() {
+  Wire.begin();
+  
+  for (uint8_t t=0; t<50; t++) {
+    Serial.println(); 
+  }
+  
+  scandirectports();
+  
+  Serial.println();
+  Serial.println();
+  
+  for (uint8_t t=0; t<8; t++) {
+    pcaselect(t);
+    Serial.print("PCA Port #"); Serial.println(t);
+    for (uint8_t addr = 0; addr<=127; addr++) {
+      if (addr == PCAADDR) continue;
+      Wire.beginTransmission(addr);
+      if (!Wire.endTransmission()) {
+        Serial.print("Found I2C 0x");  Serial.println(addr,HEX);
+        Serial.println("scanning for tcs sensor");
+        if (tcs.begin()) {
+          Serial.println("Found sensor");
+          Serial.println("collecting data");
+          uint16_t r, g, b, c, colorTemp, lux;
+          tcs.getRawData(&r, &g, &b, &c);
+          colorTemp = tcs.calculateColorTemperature_dn40(r, g, b, c);
+          lux = tcs.calculateLux(r, g, b);
+          Serial.print("RGB: "); Serial.print(r, DEC); Serial.print(", "); Serial.print(g, DEC); Serial.print(", "); Serial.print(b, DEC); Serial.println(" ");
+          Serial.println();
+
+          
+        } else {
+          Serial.println("No TCS34725 found ... check your connections");
+        }
+      }
+    }
+  }
+  Serial.println();
+  Serial.println("DONE");
+  delay(5500);
+}