Update FreeRTOS examples for PicoW (#2557)

The PicoW can't access the LED from core 1, because it is driven by the
CYW43 chip, so make sure any blinking is on core 0.

Fixes #2553

Author: earlephilhower

libraries/FreeRTOS/examples/Multicore-FreeRTOS/Multicore-FreeRTOS.ino

@@ -38,6 +38,7 @@ void ps() {
 
 void blink(void *param) {
   (void) param;
+  delay(500);
   pinMode(LED_BUILTIN, OUTPUT);
   while (true) {
     digitalWrite(LED_BUILTIN, LOW);
@@ -49,12 +50,17 @@ void blink(void *param) {
 
 
 void setup() {
+  TaskHandle_t blinkTask;
   Serial.begin(115200);
-  xTaskCreate(blink, "BLINK", 128, nullptr, 1, nullptr);
+  xTaskCreate(blink, "BLINK", 256, nullptr, 1, &blinkTask);
+#ifdef ARDUINO_RASPBERRY_PI_PICO_W
+  // The PicoW WiFi chip controls the LED, and only core 0 can make calls to it safely
+  vTaskCoreAffinitySet(blinkTask, 1 << 0);
+#endif
   delay(5000);
 }
 
-volatile int val= 0;
+volatile int val = 0;
 void loop() {
   Serial.printf("C0: Blue leader standing by...\n");
   ps();

libraries/FreeRTOS/examples/StaticMulticore-FreeRTOS/StaticMulticore-FreeRTOS.ino

@@ -35,6 +35,8 @@ StackType_t xStack_B[ STACK_SIZE ];
 SemaphoreHandle_t xSemaphore = NULL;
 StaticSemaphore_t xMutexBuffer;
 
+TaskHandle_t ledOnTask, ledOffTask;
+
 void setup() {
   SERIAL_PORT.begin(115200);
   pinMode(LED_BUILTIN, OUTPUT);
@@ -44,13 +46,22 @@ void setup() {
     the xMutexBuffer variable. */
   xSemaphore = xSemaphoreCreateMutexStatic( &xMutexBuffer );
 
-  xTaskCreateStatic(led_ON, "led_ON", STACK_SIZE, NULL, configMAX_PRIORITIES - 1, xStack_A, &xTaskBuffer_A);
-  xTaskCreateStatic(led_OFF, "led_OFF", STACK_SIZE, NULL, configMAX_PRIORITIES - 1, xStack_B, &xTaskBuffer_B);
-}
+  ledOnTask = xTaskCreateStatic(led_ON, "led_ON", STACK_SIZE, NULL, configMAX_PRIORITIES - 1, xStack_A, &xTaskBuffer_A);
+#ifdef ARDUINO_RASPBERRY_PI_PICO_W
+  // The PicoW WiFi chip controls the LED, and only core 0 can make calls to it safely
+  vTaskCoreAffinitySet(ledOnTask, 1 << 0);
+#endif
+  ledOffTask = xTaskCreateStatic(led_OFF, "led_OFF", STACK_SIZE, NULL, configMAX_PRIORITIES - 1, xStack_B, &xTaskBuffer_B);
+#ifdef ARDUINO_RASPBERRY_PI_PICO_W
+  // The PicoW WiFi chip controls the LED, and only core 0 can make calls to it safely
+  vTaskCoreAffinitySet(ledOffTask, 1 << 0);
+#endif
+  }
 
 void led_ON(void *pvParameters)
 {
   (void) pvParameters;
+  delay(100);
   while (1)
   {
     xSemaphoreTake( xSemaphore, ( TickType_t ) portMAX_DELAY );
@@ -65,6 +76,7 @@ void led_ON(void *pvParameters)
 void led_OFF(void *pvParameters)
 {
   (void) pvParameters;
+  delay(100);
   while (1)
   {
     xSemaphoreTake( xSemaphore, ( TickType_t ) portMAX_DELAY );