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2023-02-25 16:13:53 +01:00
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# ESP RainMaker Examples
While building any examples for ESP RainMaker, take care of the following:
1. Change partition scheme in Arduino IDE to RainMaker (Tools -> Partition Scheme -> RainMaker).
2. Once ESP RainMaker gets started, compulsorily call `WiFi.beginProvision()` which is responsible for user-node mapping.
3. Use the appropriate provisioning scheme as per the board.
- ESP32 Board: BLE Provisioning
- ESP32-C3 Board: BLE Provisioning
- ESP32-S3 Board: BLE Provisioning
- ESP32-S2 Board: SoftAP Provisioning
4. Set debug level to Info (Tools -> Core Debug Level -> Info). This is recommended debug level but not mandatory to run RainMaker.

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# ESP RainMaker Custom Device
This example demonstrates how to build a custom device to be used with ESP RainMaker.
## What to expect in this example?
- This example sketch uses the on board Boot button and GPIO16 to demonstrate an ESP RainMaker AC dimmer device.
- After compiling and flashing the example, add your device using the [ESP RainMaker phone apps](https://rainmaker.espressif.com/docs/quick-links.html#phone-apps) by scanning the QR code.
- Toggling the state from the phone app will toggle the dimmer state (GPIO16).
- Pressing the Boot button will toggle the dimmer state (GPIO16) and the same will reflect on the phone app.
- You can also change the Level from the phone app and see it reflect on the device as a print message.
### Output
```
[ 87][I][RMaker.cpp:13] event_handler(): RainMaker Initialised.
[ 94][I][WiFiProv.cpp:158] beginProvision(): Already Provisioned
[ 95][I][WiFiProv.cpp:162] beginProvision(): Attempting connect to AP: Viking007_2GEXT
Received value = false for Dimmer - Power
Toggle State to true.
[ 22532][I][RMakerDevice.cpp:162] updateAndReportParam(): Device : Dimmer, Param Name : Power, Val : true
Received value = 73 for Dimmer - Level
```
### Resetting the device
- Press and Hold the Boot button for more than 3 seconds and then release to reset Wi-Fi configuration.
- Press and Hold the Boot button for more than 10 seconds and then release to reset to factory defaults.

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//This example demonstrates the ESP RainMaker with a custom device
#include "RMaker.h"
#include "WiFi.h"
#include "WiFiProv.h"
#define DEFAULT_POWER_MODE true
#define DEFAULT_DIMMER_LEVEL 50
const char *service_name = "PROV_1234";
const char *pop = "abcd1234";
//GPIO for push button
#if CONFIG_IDF_TARGET_ESP32C3
static int gpio_0 = 9;
static int gpio_dimmer = 7;
#else
//GPIO for virtual device
static int gpio_0 = 0;
static int gpio_dimmer = 16;
#endif
bool dimmer_state = true;
// The framework provides some standard device types like switch, lightbulb, fan, temperature sensor.
// But, you can also define custom devices using the 'Device' base class object, as shown here
static Device my_device("Dimmer", "custom.device.dimmer", &gpio_dimmer);
void sysProvEvent(arduino_event_t *sys_event)
{
switch (sys_event->event_id) {
case ARDUINO_EVENT_PROV_START:
#if CONFIG_IDF_TARGET_ESP32S2
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on SoftAP\n", service_name, pop);
printQR(service_name, pop, "softap");
#else
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on BLE\n", service_name, pop);
printQR(service_name, pop, "ble");
#endif
break;
default:;
}
}
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("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
dimmer_state = val.val.b;
(dimmer_state == false) ? digitalWrite(gpio_dimmer, LOW) : digitalWrite(gpio_dimmer, HIGH);
param->updateAndReport(val);
} else if (strcmp(param_name, "Level") == 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_dimmer, OUTPUT);
digitalWrite(gpio_dimmer, DEFAULT_POWER_MODE);
Node my_node;
my_node = RMaker.initNode("ESP RainMaker Node");
//Create custom dimmer device
my_device.addNameParam();
my_device.addPowerParam(DEFAULT_POWER_MODE);
my_device.assignPrimaryParam(my_device.getParamByName(ESP_RMAKER_DEF_POWER_NAME));
//Create and add a custom level parameter
Param level_param("Level", "custom.param.level", value(DEFAULT_DIMMER_LEVEL), PROP_FLAG_READ | PROP_FLAG_WRITE);
level_param.addBounds(value(0), value(100), value(1));
level_param.addUIType(ESP_RMAKER_UI_SLIDER);
my_device.addParam(level_param);
my_device.addCb(write_callback);
//Add custom dimmer device to the node
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");
// Alternatively, enable the Timezone service and let the phone apps set the appropriate timezone
RMaker.enableTZService();
RMaker.enableSchedule();
RMaker.start();
WiFi.onEvent(sysProvEvent);
#if CONFIG_IDF_TARGET_ESP32S2
WiFiProv.beginProvision(WIFI_PROV_SCHEME_SOFTAP, WIFI_PROV_SCHEME_HANDLER_NONE, WIFI_PROV_SECURITY_1, pop, service_name);
#else
WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, pop, service_name);
#endif
}
void loop()
{
if(digitalRead(gpio_0) == LOW) { //Push button pressed
// Key debounce handling
delay(100);
int startTime = millis();
while(digitalRead(gpio_0) == LOW) delay(50);
int endTime = millis();
if ((endTime - startTime) > 10000) {
// If key pressed for more than 10secs, reset all
Serial.printf("Reset to factory.\n");
RMakerFactoryReset(2);
} else if ((endTime - startTime) > 3000) {
Serial.printf("Reset Wi-Fi.\n");
// If key pressed for more than 3secs, but less than 10, reset Wi-Fi
RMakerWiFiReset(2);
} else {
// Toggle device state
dimmer_state = !dimmer_state;
Serial.printf("Toggle State to %s.\n", dimmer_state ? "true" : "false");
my_device.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, dimmer_state);
(dimmer_state == false) ? digitalWrite(gpio_dimmer, LOW) : digitalWrite(gpio_dimmer, HIGH);
}
}
delay(100);
}

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# ESP RainMaker Custom Device
This example demonstrates how to build a custom device to be used with ESP RainMaker using Mode, Range and Toggle Parameters.
## What to expect in this example?
- This example sketch uses the on board Boot button and GPIOs 16, 17, 18, 19, 21, 22 to demonstrate an ESP RainMaker AirCooler device.
- After compiling and flashing the example, add your device using the [ESP RainMaker phone apps](https://rainmaker.espressif.com/docs/quick-links.html#phone-apps) by scanning the QR code.
- Toggling the power state from the phone app will toggle GPIO 16.
- Pressing the Boot button will toggle the power state (GPIO 16) and the same will reflect on the phone app.
- Toggling the swing state from the phone app will toggle GPIO 17.
- Changing the mode from the phone app will toggle the GPIOs 18 (auto), 19 (cool) and 21 (heat)
- Changing the Speed slider from the phone app will dimming GPIO 22
- You can also change the Level from the phone app and see it reflect on the device as a print message.
### Output
```
Received value = true for Air Cooler - Power
Received value = false for Air Cooler - Power
Received value = true for Air Cooler - Swing
Received value = false for Air Cooler - Swing
Received value = 0 for Air Cooler - Speed
Received value = 255 for Air Cooler - Speed
Received value = Auto for Air Cooler - Mode
Received value = Cool for Air Cooler - Mode
Received value = Heat for Air Cooler - Mode
Toggle power state to false.
Toggle power state to false.
```
### Resetting the device
- Press and Hold the Boot button for more than 3 seconds and then release to reset Wi-Fi configuration.
- Press and Hold the Boot button for more than 10 seconds and then release to reset to factory defaults.

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//This example demonstrates the ESP RainMaker with a custom Air Cooler device
#include "RMaker.h"
#include "WiFi.h"
#include "WiFiProv.h"
#include "led_strip.h"
#define DEFAULT_POWER_MODE true
#define DEFAULT_SWING false
#define DEFAULT_SPEED 0
#define DEFAULT_MODE "Auto"
const char *service_name = "PROV_1234";
const char *pop = "abcd1234";
#if CONFIG_IDF_TARGET_ESP32C3
//GPIO for push button
static int gpio_reset = 9;
//GPIO for virtual device
static int gpio_power = 7;
static int gpio_swing = 3;
static int gpio_mode_auto = 4;
static int gpio_mode_cool = 5;
static int gpio_mode_heat = 6;
static int gpio_speed = 10;
#else
//GPIO for push button
static int gpio_reset = 0;
//GPIO for virtual device
static int gpio_power = 16;
static int gpio_swing = 17;
static int gpio_mode_auto = 18;
static int gpio_mode_cool = 19;
static int gpio_mode_heat = 21;
static int gpio_speed = 22;
#endif
bool power_state = true;
// The framework provides some standard device types like switch, lightbulb, fan, temperature sensor.
// But, you can also define custom devices using the 'Device' base class object, as shown here
static Device my_device("Air Cooler", "my.device.air-cooler", NULL);
void sysProvEvent(arduino_event_t *sys_event)
{
switch (sys_event->event_id) {
case ARDUINO_EVENT_PROV_START:
#if CONFIG_IDF_TARGET_ESP32S2
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on SoftAP\n", service_name, pop);
printQR(service_name, pop, "softap");
#else
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on BLE\n", service_name, pop);
printQR(service_name, pop, "ble");
#endif
break;
default:;
}
}
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("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
power_state = val.val.b;
(power_state == false) ? digitalWrite(gpio_power, LOW) : digitalWrite(gpio_power, HIGH);
param->updateAndReport(val);
} else if (strcmp(param_name, "Swing") == 0) {
Serial.printf("\nReceived value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
bool swing = val.val.b;
(swing == false) ? digitalWrite(gpio_swing, LOW) : digitalWrite(gpio_swing, HIGH);
param->updateAndReport(val);
} else if (strcmp(param_name, "Speed") == 0) {
Serial.printf("\nReceived value = %d for %s - %s\n", val.val.i, device_name, param_name);
int speed = val.val.i;
analogWrite(gpio_speed, speed);
param->updateAndReport(val);
} else if (strcmp(param_name, "Mode") == 0) {
const char* mode = val.val.s;
if (strcmp(mode, "Auto") == 0) {
digitalWrite(gpio_mode_auto, HIGH);
digitalWrite(gpio_mode_heat, LOW);
digitalWrite(gpio_mode_cool, LOW);
} else if (strcmp(mode, "Heat") == 0) {
digitalWrite(gpio_mode_auto, LOW);
digitalWrite(gpio_mode_heat, HIGH);
digitalWrite(gpio_mode_cool, LOW);
} else if (strcmp(mode, "Cool") == 0) {
digitalWrite(gpio_mode_auto, LOW);
digitalWrite(gpio_mode_heat, LOW);
digitalWrite(gpio_mode_cool, HIGH);
}
Serial.printf("\nReceived value = %s for %s - %s\n", val.val.s, device_name, param_name);
param->updateAndReport(val);
}
}
void setup()
{
Serial.begin(115200);
pinMode(gpio_reset, INPUT_PULLUP);
pinMode(gpio_power, OUTPUT);
digitalWrite(gpio_power, DEFAULT_POWER_MODE);
pinMode(gpio_swing, OUTPUT);
digitalWrite(gpio_swing, DEFAULT_SWING);
pinMode(gpio_mode_auto, OUTPUT);
if (strcmp(DEFAULT_MODE, "Auto") == 0) digitalWrite(gpio_mode_auto, HIGH);
pinMode(gpio_mode_cool, OUTPUT);
if (strcmp(DEFAULT_MODE, "Cool") == 0) digitalWrite(gpio_mode_auto, HIGH);
pinMode(gpio_mode_heat, OUTPUT);
if (strcmp(DEFAULT_MODE, "Heat") == 0) digitalWrite(gpio_mode_auto, HIGH);
pinMode(gpio_speed, OUTPUT);
analogWrite(gpio_speed, DEFAULT_SPEED);
Node my_node;
my_node = RMaker.initNode("ESP RainMaker Node");
//Create custom air cooler device
my_device.addNameParam();
my_device.addPowerParam(DEFAULT_POWER_MODE);
my_device.assignPrimaryParam(my_device.getParamByName(ESP_RMAKER_DEF_POWER_NAME));
Param swing("Swing", ESP_RMAKER_PARAM_TOGGLE, value(DEFAULT_SWING), PROP_FLAG_READ | PROP_FLAG_WRITE);
swing.addUIType(ESP_RMAKER_UI_TOGGLE);
my_device.addParam(swing);
Param speed("Speed", ESP_RMAKER_PARAM_RANGE, value(DEFAULT_SPEED), PROP_FLAG_READ | PROP_FLAG_WRITE);
speed.addUIType(ESP_RMAKER_UI_SLIDER);
speed.addBounds(value(0), value(255), value(1));
my_device.addParam(speed);
static const char* modes[] = { "Auto", "Cool", "Heat" };
Param mode_param("Mode", ESP_RMAKER_PARAM_MODE, value("Auto"), PROP_FLAG_READ | PROP_FLAG_WRITE);
mode_param.addValidStrList(modes, 3);
mode_param.addUIType(ESP_RMAKER_UI_DROPDOWN);
my_device.addParam(mode_param);
my_device.addCb(write_callback);
//Add custom Air Cooler device to the node
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");
//Alternatively, enable the Timezone service and let the phone apps set the appropriate timezone
// RMaker.enableTZService();
RMaker.enableSchedule();
RMaker.start();
WiFi.onEvent(sysProvEvent);
#if CONFIG_IDF_TARGET_ESP32S2
WiFiProv.beginProvision(WIFI_PROV_SCHEME_SOFTAP, WIFI_PROV_SCHEME_HANDLER_NONE, WIFI_PROV_SECURITY_1, pop, service_name);
#else
WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, pop, service_name);
#endif
}
void loop()
{
if(digitalRead(gpio_reset) == LOW) { //Push button pressed
// Key debounce handling
delay(100);
int startTime = millis();
while(digitalRead(gpio_reset) == LOW) delay(50);
int press_duration = millis() - startTime;
if (press_duration > 10000) {
// If key pressed for more than 10secs, reset all
Serial.printf("Reset to factory.\n");
RMakerFactoryReset(2);
} else if (press_duration > 3000) {
Serial.printf("Reset Wi-Fi.\n");
// If key pressed for more than 3secs, but less than 10, reset Wi-Fi
RMakerWiFiReset(2);
} else {
// Toggle device state
power_state = !power_state;
Serial.printf("Toggle power state to %s.\n", power_state ? "true" : "false");
my_device.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, power_state);
(power_state == false) ? digitalWrite(gpio_power, LOW) : digitalWrite(gpio_power, HIGH);
}
}
delay(100);
}

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//This example demonstrates the ESP RainMaker with a standard Switch device.
#include "RMaker.h"
#include "WiFi.h"
#include "WiFiProv.h"
#define DEFAULT_POWER_MODE false
const char *service_name = "PROV_SONOFF_DUALR3";
const char *pop = "123456";
// GPIO for push button
static uint8_t gpio_reset = 0;
// GPIO for switch
static uint8_t gpio_switch1 = 32;
static uint8_t gpio_switch2 = 33;
// GPIO for virtual device
static uint8_t gpio_relay1 = 27;
static uint8_t gpio_relay2 = 14;
/* Variable for reading pin status*/
bool switch_state_ch1 = true;
bool switch_state_ch2 = true;
// GPIO for link status LED
static uint8_t gpio_led = 13;
struct LightSwitch {
const uint8_t pin;
bool pressed;
};
// Define the light switches for channel 1 and 2
LightSwitch switch_ch1 = {gpio_switch1, false};
LightSwitch switch_ch2 = {gpio_switch2, false};
//The framework provides some standard device types like switch, lightbulb, fan, temperature sensor.
static Switch my_switch1;
static Switch my_switch2;
void sysProvEvent(arduino_event_t *sys_event)
{
switch (sys_event->event_id) {
case ARDUINO_EVENT_PROV_START:
#if CONFIG_IDF_TARGET_ESP32
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on BLE\n", service_name, pop);
printQR(service_name, pop, "ble");
#else
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on SoftAP\n", service_name, pop);
printQR(service_name, pop, "softap");
#endif
break;
case ARDUINO_EVENT_WIFI_STA_CONNECTED:
Serial.printf("\nConnected to Wi-Fi!\n");
digitalWrite(gpio_led, true);
break;
default:;
}
}
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(device_name, "Switch_ch1") == 0) {
Serial.printf("Lightbulb = %s\n", val.val.b? "true" : "false");
if(strcmp(param_name, "Power") == 0) {
Serial.printf("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
switch_state_ch1 = val.val.b;
(switch_state_ch1 == false) ? digitalWrite(gpio_relay1, LOW) : digitalWrite(gpio_relay1, HIGH);
param->updateAndReport(val);
}
} else if(strcmp(device_name, "Switch_ch2") == 0) {
Serial.printf("Switch value = %s\n", val.val.b? "true" : "false");
if(strcmp(param_name, "Power") == 0) {
Serial.printf("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
switch_state_ch2 = val.val.b;
(switch_state_ch2 == false) ? digitalWrite(gpio_relay2, LOW) : digitalWrite(gpio_relay2, HIGH);
param->updateAndReport(val);
}
}
}
void ARDUINO_ISR_ATTR isr(void* arg) {
LightSwitch* s = static_cast<LightSwitch*>(arg);
s->pressed = true;
}
void setup()
{
uint32_t chipId = 0;
Serial.begin(115200);
// Configure the input GPIOs
pinMode(gpio_reset, INPUT);
pinMode(switch_ch1.pin, INPUT_PULLUP);
attachInterruptArg(switch_ch1.pin, isr, &switch_ch1, CHANGE);
pinMode(switch_ch2.pin, INPUT_PULLUP);
attachInterruptArg(switch_ch2.pin, isr, &switch_ch2, CHANGE);
// Set the Relays GPIOs as output mode
pinMode(gpio_relay1, OUTPUT);
pinMode(gpio_relay2, OUTPUT);
pinMode(gpio_led, OUTPUT);
// Write to the GPIOs the default state on booting
digitalWrite(gpio_relay1, DEFAULT_POWER_MODE);
digitalWrite(gpio_relay2, DEFAULT_POWER_MODE);
digitalWrite(gpio_led, false);
Node my_node;
my_node = RMaker.initNode("Sonoff Dual R3");
//Initialize switch device
my_switch1 = Switch("Switch_ch1", &gpio_relay1);
my_switch2 = Switch("Switch_ch2", &gpio_relay2);
//Standard switch device
my_switch1.addCb(write_callback);
my_switch2.addCb(write_callback);
//Add switch device to the node
my_node.addDevice(my_switch1);
my_node.addDevice(my_switch2);
//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");
// Alternatively, enable the Timezone service and let the phone apps set the appropriate timezone
RMaker.enableTZService();
RMaker.enableSchedule();
//Service Name
for(int i=0; i<17; i=i+8) {
chipId |= ((ESP.getEfuseMac() >> (40 - i)) & 0xff) << i;
}
Serial.printf("\nChip ID: %d Service Name: %s\n", chipId, service_name);
Serial.printf("\nStarting ESP-RainMaker\n");
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 (switch_ch1.pressed) {
Serial.printf("Switch 1 has been changed\n");
switch_ch1.pressed = false;
// Toggle switch 1 device state
switch_state_ch1 = !switch_state_ch1;
Serial.printf("Toggle State to %s.\n", switch_state_ch1 ? "true" : "false");
my_switch1.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, switch_state_ch1);
(switch_state_ch1 == false) ? digitalWrite(gpio_relay1, LOW) : digitalWrite(gpio_relay1, HIGH);
} else if (switch_ch2.pressed) {
Serial.printf("Switch 2 has been changed\n");
switch_ch2.pressed = false;
// Toggle switch 2 device state
switch_state_ch2 = !switch_state_ch2;
Serial.printf("Toggle State to %s.\n", switch_state_ch2 ? "true" : "false");
my_switch2.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, switch_state_ch2);
(switch_state_ch2 == false) ? digitalWrite(gpio_relay2, LOW) : digitalWrite(gpio_relay2, HIGH);
}
// Read GPIO0 (external button to reset device
if(digitalRead(gpio_reset) == LOW) { //Push button pressed
Serial.printf("Reset Button Pressed!\n");
// Key debounce handling
delay(100);
int startTime = millis();
while(digitalRead(gpio_reset) == LOW) delay(50);
int endTime = millis();
if ((endTime - startTime) > 10000) {
// If key pressed for more than 10secs, reset all
Serial.printf("Reset to factory.\n");
RMakerFactoryReset(2);
} else if ((endTime - startTime) > 3000) {
Serial.printf("Reset Wi-Fi.\n");
// If key pressed for more than 3secs, but less than 10, reset Wi-Fi
RMakerWiFiReset(2);
}
}
delay(100);
}

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# ESP RainMaker Switch
This example demonstrates how to build a switch device to be used with ESP RainMaker.
## What to expect in this example?
- This example sketch uses the on board Boot button and GPIO16 to demonstrate an ESP RainMaker switch device.
- After compiling and flashing the example, add your device using the [ESP RainMaker phone apps](https://rainmaker.espressif.com/docs/quick-links.html#phone-apps) by scanning the QR code.
- Toggling the state from the phone app will toggle the switch state (GPIO16).
- Pressing the Boot button will toggle the switch state (GPIO16) and the same will reflect on the phone app.
### Output
```
[ 63][I][RMaker.cpp:13] event_handler(): RainMaker Initialised.
[ 69][I][WiFiProv.cpp:158] beginProvision(): Already Provisioned
[ 69][I][WiFiProv.cpp:162] beginProvision(): Attempting connect to AP: Viking007_2GEXT
Toggle State to false.
[ 8182][I][RMakerDevice.cpp:162] updateAndReportParam(): Device : Switch, Param Name : Power, Val : false
Toggle State to true.
[ 9835][I][RMakerDevice.cpp:162] updateAndReportParam(): Device : Switch, Param Name : Power, Val : true
Received value = false for Switch - Power
Received value = true for Switch - Power
Toggle State to false.
[ 29937][I][RMakerDevice.cpp:162] updateAndReportParam(): Device : Switch, Param Name : Power, Val : false
```
### Resetting the device
- Press and Hold the Boot button for more than 3 seconds and then release to reset Wi-Fi configuration.
- Press and Hold the Boot button for more than 10 seconds and then release to reset to factory defaults.

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libraries/RainMaker/examples/RMakerSwitch/RMakerSwitch.ino Normal file
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//This example demonstrates the ESP RainMaker with a standard Switch device.
#include "RMaker.h"
#include "WiFi.h"
#include "WiFiProv.h"
#define DEFAULT_POWER_MODE true
const char *service_name = "PROV_1234";
const char *pop = "abcd1234";
//GPIO for push button
#if CONFIG_IDF_TARGET_ESP32C3
static int gpio_0 = 9;
static int gpio_switch = 7;
#else
//GPIO for virtual device
static int gpio_0 = 0;
static int gpio_switch = 16;
#endif
/* Variable for reading pin status*/
bool switch_state = true;
//The framework provides some standard device types like switch, lightbulb, fan, temperaturesensor.
static Switch my_switch;
void sysProvEvent(arduino_event_t *sys_event)
{
switch (sys_event->event_id) {
case ARDUINO_EVENT_PROV_START:
#if CONFIG_IDF_TARGET_ESP32S2
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on SoftAP\n", service_name, pop);
printQR(service_name, pop, "softap");
#else
Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on BLE\n", service_name, pop);
printQR(service_name, pop, "ble");
#endif
break;
default:;
}
}
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("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
switch_state = val.val.b;
(switch_state == false) ? digitalWrite(gpio_switch, LOW) : digitalWrite(gpio_switch, HIGH);
param->updateAndReport(val);
}
}
void setup()
{
Serial.begin(115200);
pinMode(gpio_0, INPUT);
pinMode(gpio_switch, OUTPUT);
digitalWrite(gpio_switch, DEFAULT_POWER_MODE);
Node my_node;
my_node = RMaker.initNode("ESP RainMaker Node");
//Initialize switch device
my_switch = Switch("Switch", &gpio_switch);
//Standard switch device
my_switch.addCb(write_callback);
//Add switch device to the node
my_node.addDevice(my_switch);
//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");
// Alternatively, enable the Timezone service and let the phone apps set the appropriate timezone
RMaker.enableTZService();
RMaker.enableSchedule();
RMaker.start();
WiFi.onEvent(sysProvEvent);
#if CONFIG_IDF_TARGET_ESP32S2
WiFiProv.beginProvision(WIFI_PROV_SCHEME_SOFTAP, WIFI_PROV_SCHEME_HANDLER_NONE, WIFI_PROV_SECURITY_1, pop, service_name);
#else
WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, pop, service_name);
#endif
}
void loop()
{
if(digitalRead(gpio_0) == LOW) { //Push button pressed
// Key debounce handling
delay(100);
int startTime = millis();
while(digitalRead(gpio_0) == LOW) delay(50);
int endTime = millis();
if ((endTime - startTime) > 10000) {
// If key pressed for more than 10secs, reset all
Serial.printf("Reset to factory.\n");
RMakerFactoryReset(2);
} else if ((endTime - startTime) > 3000) {
Serial.printf("Reset Wi-Fi.\n");
// If key pressed for more than 3secs, but less than 10, reset Wi-Fi
RMakerWiFiReset(2);
} else {
// Toggle device state
switch_state = !switch_state;
Serial.printf("Toggle State to %s.\n", switch_state ? "true" : "false");
my_switch.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, switch_state);
(switch_state == false) ? digitalWrite(gpio_switch, LOW) : digitalWrite(gpio_switch, HIGH);
}
}
delay(100);
}