Center column scripts and utils

center-column/addressing_patterns-tcaa/addressing_patterns-tcaa.ino

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+#include "Wire.h" // enable I2C bus
+
+#define TCAADDR 0x70
+byte saa1064 = 0x3B; // define the I2C bus address for our SAA1064
+
+byte bank1;
+byte bank2;
+byte bank3;
+byte bank4;
+
+int TOTAL_LEDS = 23;
+byte activityLED = 0b00000001;
+byte leds[23][4] = {
+  {0b00000010, 0b00000000, 0b00000000, 0b00000000}, //  1
+  {0b00000000, 0b00000010, 0b00000000, 0b00000000}, //  2
+  {0b00000100, 0b00000000, 0b00000000, 0b00000000}, //  3
+  {0b00000000, 0b00000100, 0b00000000, 0b00000000}, //  4
+  {0b00001000, 0b00000000, 0b00000000, 0b00000000}, //  5
+  {0b00000000, 0b00001000, 0b00000000, 0b00000000}, //  6
+  {0b00010000, 0b00000000, 0b00000000, 0b00000000}, //  7
+  {0b00000000, 0b00010000, 0b00000000, 0b00000000}, //  8
+  {0b00100000, 0b00000000, 0b00000000, 0b00000000}, //  9
+  {0b00000000, 0b00100000, 0b00000000, 0b00000000}, // 10
+  {0b01000000, 0b00000000, 0b00000000, 0b00000000}, // 11
+  {0b00000000, 0b01000000, 0b00000000, 0b00000000}, // 12
+  {0b00000000, 0b00000000, 0b00000001, 0b00000000}, // 13
+  {0b00000000, 0b00000000, 0b00000000, 0b00000001}, // 14
+  {0b00000000, 0b00000000, 0b00000010, 0b00000000}, // 15
+  {0b00000000, 0b00000000, 0b00000000, 0b00000010}, // 16
+  {0b00000000, 0b00000000, 0b00000100, 0b00000000}, // 17
+  {0b00000000, 0b00000000, 0b00000000, 0b00000100}, // 18
+  {0b00000000, 0b00000000, 0b00001000, 0b00000000}, // 19
+  {0b00000000, 0b00000000, 0b00000000, 0b00001000}, // 20
+  {0b00000000, 0b00000000, 0b00010000, 0b00000000}, // 21
+  {0b00000000, 0b00000000, 0b00100000, 0b00000000}, // 22
+  {0b00000000, 0b00000000, 0b01000000, 0b00000000}  // 23
+};
+
+void initDisplay()
+{
+  Serial.println("starting display");
+  Wire.beginTransmission(saa1064);
+  Wire.write(B00000000); // this is the instruction byte. Zero means the next byte is the control byte
+  Wire.endTransmission();
+}
+
+void setup()
+{
+  Serial.begin(9600);
+  Wire.begin(); // start up I2C bus
+
+  Serial.println("setting up ports");
+
+  resetBanks();
+  _write();
+}
+
+void tcaselect(uint8_t i) {
+  if (i > 7) return;
+ 
+  Wire.beginTransmission(TCAADDR);
+  Wire.write(1 << i);
+  Wire.endTransmission();  
+}
+
+void selectLeft() { tcaselect(2); }
+void selectRight() { tcaselect(1); }
+
+void _write() {
+  selectLeft();
+  write();
+  delay(1);
+  selectRight();
+  write();
+}
+
+void write() {
+  Wire.beginTransmission(saa1064);
+  Wire.write(1);
+
+  Wire.write(bank1);
+  Wire.write(bank2);
+  Wire.write(bank3);
+  Wire.write(bank4);
+
+  Wire.endTransmission();
+}
+
+void resetBanks() {
+  bank1 = 0;
+  bank2 = 0;
+  bank3 = 0;
+  bank4 = 0;
+}
+
+void displayNumber(int number) { 
+  bank1 = leds[number - 1][0];
+  bank2 = leds[number - 1][1];
+  bank3 = leds[number - 1][2];
+  bank4 = leds[number - 1][3];
+}
+
+void displayUpToNumber(int number) { 
+  for (int i = 0; i < number; i++) {
+    bank1 |= leds[i][0];
+    bank2 |= leds[i][1];
+    bank3 |= leds[i][2];
+    bank4 |= leds[i][3];
+  }
+}
+
+void displayNumbers(int* numbersList, size_t length) {
+  for (int i = 0; i < length; i++) {
+    int num = numbersList[i] - 1;
+    bank1 |= leds[num][0];
+    bank2 |= leds[num][1];
+    bank3 |= leds[num][2];
+    bank4 |= leds[num][3];
+  }
+}
+
+void displayPercentage(double percentDecimal) {
+  int numberOfTotal = round(percentDecimal * TOTAL_LEDS);
+  displayUpToNumber(numberOfTotal);
+}
+
+void computeEthernetActivity(bool val) {
+  bank1 |= val; // 0 or 1
+}
+
+void loop() {
+  resetBanks();
+  delay(10);
+
+  int length = 8;
+  int numbers[8] = {2,3,5,6,7,13,17,22};
+  displayNumbers(numbers, length);
+  // displayUpToNumber(15);
+  // displayNumber(16);
+  // displayPercentage(0.91);
+  computeEthernetActivity(false);
+
+  _write();
+  delay(1000);
+}