Update examples with more demonstrative code

examples/espidf-arduino-blink/platformio.ini

@@ -12,9 +12,13 @@ platform = espressif32
 framework = arduino, espidf
 board = esp32dev
 monitor_speed = 115200
+build_flags=
+    -D CONFIG_BLINK_GPIO=2
 
 [env:esp wrover kit]
 platform = espressif32
 framework = arduino, espidf
 board = esp-wrover-kit
-monitor_speed = 115200
+monitor_speed = 115200
+build_flags=
+    -D CONFIG_BLINK_GPIO=2

examples/espidf-arduino-blink/src/main.cpp

@@ -5,16 +5,64 @@
    CONDITIONS OF ANY KIND, either express or implied.
 */
 
+#include <stdio.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <driver/gpio.h>
+#include "sdkconfig.h"
 #include <Arduino.h>
 
+/* Can run 'make menuconfig' to choose the GPIO to blink,
+   or you can edit the following line and set a number here.
+*/
 #define BLINK_GPIO (gpio_num_t)CONFIG_BLINK_GPIO
 
 #ifndef LED_BUILTIN
 #define LED_BUILTIN 4
 #endif
 
+void blink_task(void *pvParameter)
+{
+    /* Configure the IOMUX register for pad BLINK_GPIO (some pads are
+       muxed to GPIO on reset already, but some default to other
+       functions and need to be switched to GPIO. Consult the
+       Technical Reference for a list of pads and their default
+       functions.)
+    */
+    gpio_pad_select_gpio(BLINK_GPIO);
+    /* Set the GPIO as a push/pull output */
+    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
+    while(1) {
+        /* Blink off (output low) */
+        gpio_set_level(BLINK_GPIO, 0);
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+        /* Blink on (output high) */
+        gpio_set_level(BLINK_GPIO, 1);
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+    }
+}
+
+#if !CONFIG_AUTOSTART_ARDUINO
+void arduinoTask(void *pvParameter) {
+    pinMode(LED_BUILTIN, OUTPUT);
+    while(1) {
+        digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
+        delay(1000);
+    }
+}
+
+void app_main()
+{
+    // initialize arduino library before we start the tasks
+    initArduino();
+
+    xTaskCreate(&blink_task, "blink_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
+    xTaskCreate(&arduinoTask, "arduino_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
+}
+#else
 void setup() {
     Serial.begin(115200);
+    xTaskCreate(&blink_task, "blink_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
     pinMode(LED_BUILTIN, OUTPUT);
 }
 void loop() {
@@ -22,3 +70,4 @@ void loop() {
     Serial.println("Hello!");
     delay(1000);
 }
+#endif 

examples/espidf-arduino-wifiscan/src/main.cpp

@@ -1,3 +1,13 @@
+/* WiFi scan Example
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+#include <stdio.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include "sdkconfig.h"
 #include <Arduino.h>
 #include <WiFi.h>
 
@@ -25,15 +35,41 @@ void wifiScan() {
     Serial.println("");
 }
 
-void setup() {
+#if !CONFIG_AUTOSTART_ARDUINO
+void arduinoTask(void *pvParameter) {
     // Set WiFi to station mode and disconnect from an AP if it was previously connected
-    Serial.begin(115200);
     WiFi.mode(WIFI_STA);
     WiFi.disconnect();
+    Serial.begin(115200);
+    delay(100);
+
+    while(1) {
+        wifiScan();
+
+        // Wait a bit before scanning again
+        delay(5000);
+    }
+}
+
+void app_main()
+{
+    // initialize arduino library before we start the tasks
+    initArduino();
+
+    xTaskCreate(&arduinoTask, "arduino_task", configMINIMAL_STACK_SIZE, NULL, 5, NULL);
+}
+#else
+void setup() {
+    // Set WiFi to station mode and disconnect from an AP if it was previously connected
+    WiFi.mode(WIFI_STA);
+    WiFi.disconnect();
+    Serial.begin(115200);
     delay(100);
 }
 
 void loop() {
     wifiScan();
+    // Wait a bit before scanning again
     delay(5000);
-} 
+}
+#endif