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trafficLight/trafficLight.c

+#include <stdio.h>
+#include "pico/stdlib.h"
+#include "hardware/gpio.h"
+
+#define RED_LED_PIN 25
+#define AMBER_LED_PIN 8
+#define GREEN_LED_PIN 7
+
+int main() {
+    stdio_init_all();
+
+    
+    gpio_init(RED_LED_PIN);
+    gpio_init(AMBER_LED_PIN);
+    gpio_init(GREEN_LED_PIN);
+
+    gpio_set_dir(RED_LED_PIN, GPIO_OUT);
+    gpio_set_dir(AMBER_LED_PIN, GPIO_OUT);
+    gpio_set_dir(GREEN_LED_PIN, GPIO_OUT);
+
+    gpio_put(RED_LED_PIN, 0);
+    gpio_put(AMBER_LED_PIN, 0);
+    gpio_put(GREEN_LED_PIN, 0);
+
+    while (true) {
+        
+        gpio_put(RED_LED_PIN, 1);
+        gpio_put(AMBER_LED_PIN, 0);
+        gpio_put(GREEN_LED_PIN, 0);
+        sleep_ms(20000);
+
+        
+        gpio_put(RED_LED_PIN, 1);
+        gpio_put(AMBER_LED_PIN, 1);
+        gpio_put(GREEN_LED_PIN, 0);
+        sleep_ms(2000);
+
+        
+        gpio_put(RED_LED_PIN, 0);
+        gpio_put(AMBER_LED_PIN, 0);
+        gpio_put(GREEN_LED_PIN, 1);
+        sleep_ms(5000);
+
+        
+        gpio_put(RED_LED_PIN, 0);
+        gpio_put(AMBER_LED_PIN, 1);
+        gpio_put(GREEN_LED_PIN, 0);
+        sleep_ms(2000);
+    }
+
+    return 0;
+}