v2.0.0 Add support for ESP32S2 and update ESP-IDF to 4.4 (#4996)

This is very much still work in progress and much more will change before the final 2.0.0

Some APIs have changed. New libraries have been added. LittleFS included.

Co-authored-by: Seon Rozenblum <seonr@3sprockets.com>
Co-authored-by: Me No Dev <me-no-dev@users.noreply.github.com>
Co-authored-by: geeksville <kevinh@geeksville.com>
Co-authored-by: Mike Dunston <m_dunston@comcast.net>
Co-authored-by: Unexpected Maker <seon@unexpectedmaker.com>
Co-authored-by: Seon Rozenblum <seonr@3sprockets.com>
Co-authored-by: microDev <70126934+microDev1@users.noreply.github.com>
Co-authored-by: tobozo <tobozo@users.noreply.github.com>
Co-authored-by: bobobo1618 <bobobo1618@users.noreply.github.com>
Co-authored-by: lorol <lorolouis@gmail.com>
Co-authored-by: geeksville <kevinh@geeksville.com>
Co-authored-by: Limor "Ladyada" Fried <limor@ladyada.net>
Co-authored-by: Sweety <switi.mhaiske@espressif.com>
Co-authored-by: Loick MAHIEUX <loick111@gmail.com>
Co-authored-by: Larry Bernstone <lbernstone@gmail.com>
Co-authored-by: Valerii Koval <valeros@users.noreply.github.com>
Co-authored-by: 快乐的我531 <2302004040@qq.com>
Co-authored-by: chegewara <imperiaonline4@gmail.com>
Co-authored-by: Clemens Kirchgatterer <clemens@1541.org>
Co-authored-by: Aron Rubin <aronrubin@gmail.com>
Co-authored-by: Pete Lewis <601236+lewispg228@users.noreply.github.com>

libraries/RainMaker/examples/RMakerDevice/README.md

@@ -0,0 +1,34 @@
+# Switch Example
+
+## Compile n Flash firmware
+
+### ESP32 Board
+- Assisted Claiming + BLE Provisioning
+
+## What to expect in this sketch ?
+### It demonstartes the toggling of power of devices using phone app and BOOT button.
+
+- Switch and Fan are the dummy device. Switch connected at gpio(16) and Fan connected at gpio(17).
+- Toggling the power button for any device(switch/fan) on phone app will change the status(on/off) for the device connected at gpio(16/17) and also update the status to the ESP RainMaker cloud if `param.updateAndReport(val)` API is called.
+- Pressing the BOOT button toggles the status(on/off) of both device(switch & fan) connected at gpio(16/17) and report values to the cloud.
+
+### Output
+
+```
+[I][WiFiProv.cpp:179] beginProvision(): Already Provisioned
+[I][WiFiProv.cpp:183] beginProvision(): Attempting connect to AP: Wce*****
+
+Received value = false for Switch - Power
+
+Received value = false for Fan - Power
+
+Received value = true for Switch - Power
+
+[I][RMakerDevice.cpp:161] updateAndReportParam(): Device : Switch, Param Name : Power, Val : false
+
+[I][RMakerDevice.cpp:161] updateAndReportParam(): Device : Fan, Param Name : Power, Val : true
+
+Received value = true for Switch - Power
+
+Received value = false for Fan - Power
+```

libraries/RainMaker/examples/RMakerDevice/RMakerDevice.ino

@@ -0,0 +1,113 @@
+//This example demonstrates the ESP RainMaker with the custom device and standard Switch device.
+#include "RMaker.h"
+#include "WiFi.h"
+#include "WiFiProv.h"
+
+#define DEFAULT_FAN_SPEED 4
+#define DEFAULT_POWER_MODE true
+const char *service_name = "Prov_1234";
+const char *pop = "abcd1234";
+
+//GPIO for push button
+static int gpio_0 = 0;
+//GPIO for virtual device
+static int gpio_switch = 16;
+static int gpio_fan = 17;
+/* Variable for reading pin status*/
+bool switch_state = true;
+bool fan_state = true;
+
+//The framework provides some standard device types like switch, lightbulb, fan, temperaturesensor.
+static Switch my_switch("Switch", &gpio_switch);
+//You can also define custom devices using the 'Device' base class object, as shown here
+static Device my_device("Fan", ESP_RMAKER_DEVICE_FAN, &gpio_fan);
+
+void sysProvEvent(arduino_event_t *sys_event)
+{
+    switch (sys_event->event_id) {      
+        case ARDUINO_EVENT_PROV_START:
+#if CONFIG_IDF_TARGET_ESP32
+        printQR(service_name, pop, "ble");
+#else
+        printQR(service_name, pop, "softap");
+#endif        
+        break;
+    }
+}
+
+void write_callback(Device *device, Param *param, const param_val_t val, void *priv_data, write_ctx_t *ctx)
+{
+    const char *device_name = device->getDeviceName();
+    const char *param_name = param->getParamName();
+
+    if(strcmp(param_name, "Power") == 0) {
+        Serial.printf("\nReceived value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
+        if(strcmp(device_name, "Switch") == 0) {
+            switch_state = val.val.b;
+            (switch_state == false) ? digitalWrite(gpio_switch, LOW) : digitalWrite(gpio_switch, HIGH);
+        }
+        if(strcmp(device_name, "Fan") == 0) {
+            fan_state = val.val.b;
+            (fan_state == false) ? digitalWrite(gpio_fan, LOW) : digitalWrite(gpio_fan, HIGH);
+        }
+    }
+    else if(strcmp(param_name, "Speed") == 0) {
+        Serial.printf("\nReceived value = %d for %s - %s\n", val.val.i, device_name, param_name);
+    }
+    param->updateAndReport(val);
+}
+
+void setup()
+{
+    Serial.begin(115200);
+    pinMode(gpio_0, INPUT);
+    pinMode(gpio_switch, OUTPUT);
+    pinMode(gpio_fan, OUTPUT);
+
+    Node my_node;    
+    my_node = RMaker.initNode("ESP RainMaker Node");
+
+    //Standard switch device
+    my_switch.addCb(write_callback);
+    
+    //Creating custom fan device
+    my_device.addNameParam();
+    my_device.addPowerParam(DEFAULT_POWER_MODE);
+    my_device.addSpeedParam(DEFAULT_FAN_SPEED);
+    my_device.assignPrimaryParam(my_device.getParamByName(ESP_RMAKER_DEF_POWER_NAME));
+    my_device.addCb(write_callback);
+    
+    //Add switch and fan device to the node   
+    my_node.addDevice(my_switch);
+    my_node.addDevice(my_device);
+
+    //This is optional 
+    RMaker.enableOTA(OTA_USING_PARAMS);
+    //If you want to enable scheduling, set time zone for your region using setTimeZone(). 
+    //The list of available values are provided here https://rainmaker.espressif.com/docs/time-service.html
+    RMaker.setTimeZone("Asia/Shanghai");
+    RMaker.enableSchedule();
+
+    RMaker.start();
+
+    WiFi.onEvent(sysProvEvent);
+#if CONFIG_IDF_TARGET_ESP32
+    WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, pop, service_name);
+#else
+    WiFiProv.beginProvision(WIFI_PROV_SCHEME_SOFTAP, WIFI_PROV_SCHEME_HANDLER_NONE, WIFI_PROV_SECURITY_1, pop, service_name);
+#endif
+
+}
+
+void loop()
+{
+    if(digitalRead(gpio_0) == LOW) { //Push button 
+        switch_state = !switch_state;
+        fan_state = !fan_state;
+        my_switch.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, switch_state);
+        my_device.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, fan_state);
+        (switch_state == false) ? digitalWrite(gpio_switch, LOW) : digitalWrite(gpio_switch, HIGH);
+        (fan_state == false) ? digitalWrite(gpio_fan, LOW) : digitalWrite(gpio_fan, HIGH); 
+    }
+    delay(100);
+}