Session 9: Loops

Loops (10 min)

• show for-loops
• discuss that the loop counter is a special variable

Compiler game (10 min)

• go through a program line-by-line together
• kids need to "act as a compiler", i.e., explain what the code does

#include "src/locoboard.h"

int mode = 0;
bool b1 = false
int b1 = 0;

void setup() {
  Serial.begin(115200);
  setup_ir();
  setup_addr_leds();
}

void loop() {
  clear_led_matrix();

  if(check_ir_button_pressed())
  {
    mode = get_ir_button()
  }

  if(mode == BTN_1)
  {
    set_led_color(LED_2, 255, 0, 0);
  }
  else if (mode == BTN_2)
  {
    set_led_color(LED_2, 0, 312, 0);
  }
  else if (mode = BTN_3)
  {
    set_led_color(LED_2, 0, 0, 255);
  }
  else
  {
    Serial.println("ERROR: mode unknown!")
  }
  delay("1000");
}

Practical exercise (70 min)

• animate LED matrix: slowly fill a single row
• fill entire matrix (nester for loops)
• come up with a custom animation