PWM auf Pins 0 bis 20

2026-07-04 02:44:36 +02:00
parent 5234c8d23d
commit 1f4b353f6c
12 changed files with 392 additions and 0 deletions
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+#include "pico/cyw43_arch.h"
+#include "pwm.h"
+
+// Alle 21 Kanaele synchron:
+//   500 ms Ramp-Up, 500 ms voll an, 500 ms Ramp-Down, 500 ms aus.
+static void set_all(uint16_t level) {
+    for (unsigned ch = 0; ch < PWM_TOTAL_COUNT; ch++) {
+        pwm_ch_set(ch, level);
+    }
+}
+
+int main(void) {
+    stdio_init_all();
+
+    if (cyw43_arch_init()) {
+        printf("cyw43_arch_init fehlgeschlagen\n");
+        return -1;
+    }
+
+    pwm_all_init();
+
+    printf("ampel: alle %u Kanaele synchron Ramp-Up / An / Ramp-Down / Aus\n",
+           PWM_TOTAL_COUNT);
+
+    const int ramp_steps = 50;
+    const int step_ms = 500 / ramp_steps;
+
+    while (true) {
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
+        for (int i = 0; i <= ramp_steps; i++) {
+            set_all((uint16_t)((i * PWM_MAX_LEVEL) / ramp_steps));
+            sleep_ms(step_ms);
+        }
+
+        set_all(PWM_MAX_LEVEL);
+        sleep_ms(500);
+
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, false);
+        for (int i = ramp_steps; i >= 0; i--) {
+            set_all((uint16_t)((i * PWM_MAX_LEVEL) / ramp_steps));
+            sleep_ms(step_ms);
+        }
+
+        set_all(0);
+        sleep_ms(500);
+    }
+}