Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48

From 7.5 to 7.4 From 8.4 to 8.3

From version

8.3

edited by Kevin Wiki
on 2024/07/06 11:12

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To version

7.5

edited by Kevin Wiki
on 2024/07/05 10:29

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@@ -220,7 +220,6 @@
  Each sides bank of LEDs are driven by each their PCA9554 shift register. The registers represent the following LEDs: (Note that Lock LED is only present for the LEFT side)
--(% border="1" %)
  |=(% scope="row" %)Register|1|2|3|4|5|6|7
  |=Device|Power LED Green|Power LED Red|Fan LED Green|Fan LED Red|Temperature LED Green|Temperature LED Red|Lock LED
@@ -265,176 +265,7 @@
  {{/code}}
--Controlling middle IO strip
--
--0 = 0000
--1 (green) = 0001
--2 = 0010
--1 + 2 = 0011
--3 = 0100
--
--
--There are 4 words, each containing 7 data bits. They do not
--
--
--= Controlling center LED columns =
--
--There are a total of 4 banks of addressable LED's 12 each of the total 48.
--
--|=Register Banks|=LEDs|=Count
--|=Bank 1|1 2 4 6 8 10 12|7
--|=Bank 2|3 5 7 9 11 13|6
--|=Bank 3|14 16 18 20 22 23 24|7
--|=Bank 4|15 17 19 21|4
--
--Script for writing all permutations to display:
--
--{{code language="c++"}}
--#include "Wire.h" // enable I2C bus
--
--byte saa1064 = 0x3B; // define the I2C bus address for our SAA1064 (pin 1 to GND) ****
--
--void setup()
--{
--  Wire.begin(); // start up I2C bus
--}
--
--void write(int value) {
--  Wire.beginTransmission(saa1064);
--  Wire.write(1);
--
--  Wire.write(value);
--  Wire.write(value);
--  Wire.write(value);
--  Wire.write(value);
--
--  Wire.endTransmission();
--}
--
--void loop() {
--  for (int value = 0; value < 127; value++) {
--    write(value);
--    delay(300);
--  }
--}
--{{/code}}
--
--Since LED positions don't map sequentially with LED number we can't address them in 10-base form, but we can define each LED in binary and use OR operator to display LEDs we want.
--
--{{code language="c++"}}
--#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;
--
--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 setup()
--{
--  Serial.begin(9600);
--  Wire.begin(); // start up I2C bus
--
--  Serial.println("setting up ports");
--}
--
--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() {
--  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 = bank1 | leds[i][0];
--    bank2 = bank2 | leds[i][1];
--    bank3 = bank3 | leds[i][2];
--    bank4 = bank4 | leds[i][3];
--  }
--}
--
--void computeEthernetActivity() {
--  bank1 = bank1 | activityLED;
--}
--
--void loop() {
--  resetBanks();
--  delay(10);
--
--  displayUpToNumber(15);
--  computeEthernetActivity();
--
--  selectLeft();
--  write();
--  delay(2);
--
--  selectRight();
--  write();
--  delay(1000);
--}
--{{/code}}
--
--
  )))

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