Ebyte E32 Part 8 article modified for E220 library

Tagged: deep sleep, E220 Library, WOR

This topic has 12 replies, 2 voices, and was last updated 1 month, 2 weeks ago by William.

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10 March 2024 at 19:00 #29940
William
Participant
Have modified code from “Ebyte LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) and new ESP32 shield – 8” for the E220 library. Experiencing some compiler errors; requesting help resolving errors.

Created Github Gist of code and compiler error

William
10 March 2024 at 19:09 #29941
Renzo Mischianti
Keymaster
Hi William,
The E220 has a different setting structure; please take a look at the examples of the library.
Here, you can find the WOR sender and WOR receiver configuration.

Here is the sketch to send WOR, and here is the sketch to receive It.

Bye Renzo
10 March 2024 at 20:19 #29942
William
Participant
Thank you Mr. Mischianti. I started with those sketches; both worked first attempt. I apologize; I did not think to look over those sketches closer.

Best Regards,
William
11 March 2024 at 17:31 #29992
Renzo Mischianti
Keymaster
Don’t worry, William, I must write the same articles for E32 for E220, but for now, the examples can be useful.
Rye Renzo
12 March 2024 at 14:50 #30011
William
Participant
Thank you Mr. Mischianti.

Converting nRF24L01 receiver and sender sketxhes to use E220-900T30D transceivers using E220 library. Sender part is working; having issue with structure. Plan is to expand structure in future; for now only 1 variable, switchState. The value should be 1 or 2; value for 1 on the receiving structure when read is 18285312. Have searched the web;very few returns.

I am using E220 library examples “pieced” together WOR, Sending of structure. Must say I am easy to confuse; likely missed something critcal to success.

Best regards,
William

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12 March 2024 at 15:38 #30034
Renzo Mischianti
Keymaster
Hi William,
first of all, try to send a String and check if It’s transferred correctly.
Then, try to use a char or byte to set the value.
Bye Renzo

14 March 2024 at 00:42 #30036

William

Participant

Comparing E220 library examples I sucessfully modified my exsisting sketches for the nRF24L01+ transceivers.

Thank you for reminder to look at the examples!

E220 transceiver remote switch

Receiver


//E220_Transceiver_Videofeed_Receiver.ino
//William Lucid 3/11/2024 @ 17:17 EDT

	
/*
 * EBYTE LoRa E32
 * Stay in sleep mode and wait a wake up WOR message
 *
 * You must configure the address with 0 3 23 with WOR receiver enable
 * and pay attention that WOR period must be the same of sender
 *
 *
 * https://mischianti.org
 *
 * E32        ----- esp32
 * M0         ----- 19 (or 3.3v)
 * M1         ----- 21 (or GND)
 * RX         ----- TX2 (PullUP)
 * TX         ----- RX2 (PullUP)
 * AUX        ----- 15  (PullUP)
 * VCC        ----- 3.3v/5v
 * GND        ----- GND
 *
 */
 
// with this DESTINATION_ADDL 2 you must set
// WOR SENDER configuration to the other device and
// WOR RECEIVER to this device
#define DESTINATION_ADDL 2
 
// If you want use RSSI uncomment //#define ENABLE_RSSI true
// and use relative configuration with RSSI enabled
//#define ENABLE_RSSI true
 
#include "Arduino.h"
#include "LoRa_E220.h"
#include <WiFi.h>
 
#include "soc/rtc_cntl_reg.h"
#include "soc/rtc.h"
#include "driver/rtc_io.h"

#define AUX GPIO_NUM_15

#define relayPin 17

struct Message {
 int switchState;
} message;
 
#define FPM_SLEEP_MAX_TIME           0xFFFFFFF
void callback() {
  Serial.println("Callback");
  Serial.flush();
}

void print_wakeup_reason() {
  esp_sleep_wakeup_cause_t wakeup_reason;

  wakeup_reason = esp_sleep_get_wakeup_cause();

  switch (wakeup_reason) {
    case ESP_SLEEP_WAKEUP_EXT0: Serial.println("Wakeup caused by external signal using RTC_IO"); break;
    case ESP_SLEEP_WAKEUP_EXT1: Serial.println("Wakeup caused by external signal using RTC_CNTL"); break;
    case ESP_SLEEP_WAKEUP_TIMER: Serial.println("Wakeup caused by timer"); break;
    case ESP_SLEEP_WAKEUP_TOUCHPAD: Serial.println("Wakeup caused by touchpad"); break;
    case ESP_SLEEP_WAKEUP_ULP: Serial.println("Wakeup caused by ULP program"); break;
    default: Serial.printf("Wakeup was not caused by deep sleep: %d\n", wakeup_reason); break;
  }
}

int data;

RTC_DATA_ATTR int bootCount = 0;

bool interruptExecuted = false;

void IRAM_ATTR wakeUp() {
	 // Do not use Serial on interrupt callback
	 interruptExecuted = true;
	 detachInterrupt(AUX);
}

void printParameters(struct Configuration configuration);
 
// ---------- esp32 pins --------------
LoRa_E220 e220ttl(&Serial2, 15, 21, 19); //  RX AUX M0 M1
 
//LoRa_E32 e220ttl(&Serial2, 22, 4, 18, 21, 19, UART_BPS_RATE_9600); //  esp32 RX <-- e22 TX, esp32 TX --> e22 RX AUX M0 M1
// -------------------------------------
 
//The setup function is called once at startup of the sketch
void setup()
{
  Serial.begin(9600);
  while (!Serial) {
      ; // wait for serial port to connect. Needed for native USB
  }
  delay(100);

  e220ttl.begin();

  e220ttl.setMode(MODE_2_WOR_RECEIVER);

  delay(1000);
  Serial.println();
  Serial.println("Start deep sleep!");
  delay(100);
  attachInterrupt(AUX, wakeUp, FALLING);

  esp_sleep_wakeup_cause_t wakeup_reason;

  wakeup_reason = esp_sleep_get_wakeup_cause();

  if (ESP_SLEEP_WAKEUP_EXT0 == wakeup_reason) {
      Serial.println("Waked up from external GPIO!");

      gpio_hold_dis(GPIO_NUM_21);
      gpio_hold_dis(GPIO_NUM_19);

      gpio_deep_sleep_hold_dis();

      e220ttl.setMode(MODE_0_NORMAL);

      delay(1000);

      e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, "We have waked up from message, but we can't read It!");
  }else{
      e220ttl.setMode(MODE_2_POWER_SAVING);

      delay(1000);
  }
}
 
// The loop function is called in an endless loop
void loop()
{
 
    if (e220ttl.available() > 1) {
      Serial.println("Message arrived!");
      ResponseStructContainer rsc = e220ttl.receiveMessage(sizeof(Message));
      struct Message message = *(Message*)rsc.data;

      //Serial.println(*(int*)(message.switchState));
      Serial.println(message.switchState); 
      free(rsc.data);

      // Work only with full connection
      e220ttl.setMode(MODE_0_NORMAL);

      delay(1000);

      ResponseStatus rsSend = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, "We have received the message!");
      // Check If there is some problem of succesfully send
      Serial.println(rsSend.getResponseDescription());

    if(interruptExecuted){
      
      Serial.println("WakeUp Callback, AUX pin go LOW and start receive message!");
    
      if (message.switchState == 1) {
        digitalWrite(relayPin, HIGH);
        Serial.println("\nBattery power switched ON");
        Serial.println("ESP32 wake from Deep Sleep\n");
      }
      
      if (message.switchState == 2) {
        digitalWrite(relayPin, LOW);
        Serial.println("\nBattery power switched OFF");
        Serial.println("ESP32 going to Deep Sleep");
        esp_sleep_enable_ext0_wakeup(GPIO_NUM_15,LOW); 
        gpio_deep_sleep_hold_en();
        //Go to sleep now
        Serial.println("Going to sleep now");
        esp_deep_sleep_start();
        delay(100);
        Serial.println("This will never be printed");
      }    
    }    
  }
}

void printParameters(struct Configuration configuration) {
	Serial.println("----------------------------------------");

	Serial.print(F("HEAD : "));  Serial.print(configuration.COMMAND, HEX);Serial.print(" ");Serial.print(configuration.STARTING_ADDRESS, HEX);Serial.print(" ");Serial.println(configuration.LENGHT, HEX);
	Serial.println(F(" "));
	Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, HEX);
	Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, HEX);
	Serial.println(F(" "));
	Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
	Serial.println(F(" "));
	Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
	Serial.print(F("SpeedUARTDatte     : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRateDescription());
	Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRateDescription());
	Serial.println(F(" "));
	Serial.print(F("OptionSubPacketSett: "));  Serial.print(configuration.OPTION.subPacketSetting, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getSubPacketSetting());
	Serial.print(F("OptionTranPower    : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
	Serial.print(F("OptionRSSIAmbientNo: "));  Serial.print(configuration.OPTION.RSSIAmbientNoise, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getRSSIAmbientNoiseEnable());
	Serial.println(F(" "));
	Serial.print(F("TransModeWORPeriod : "));  Serial.print(configuration.TRANSMISSION_MODE.WORPeriod, BIN);Serial.print(" -> "); Serial.println(configuration.TRANSMISSION_MODE.getWORPeriodByParamsDescription());
	Serial.print(F("TransModeEnableLBT : "));  Serial.print(configuration.TRANSMISSION_MODE.enableLBT, BIN);Serial.print(" -> "); Serial.println(configuration.TRANSMISSION_MODE.getLBTEnableByteDescription());
	Serial.print(F("TransModeEnableRSSI: "));  Serial.print(configuration.TRANSMISSION_MODE.enableRSSI, BIN);Serial.print(" -> "); Serial.println(configuration.TRANSMISSION_MODE.getRSSIEnableByteDescription());
	Serial.print(F("TransModeFixedTrans: "));  Serial.print(configuration.TRANSMISSION_MODE.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.TRANSMISSION_MODE.getFixedTransmissionDescription());

	Serial.println("----------------------------------------");
}

void printModuleInformation(struct ModuleInformation moduleInformation) {
	Serial.println("----------------------------------------");
	Serial.print(F("HEAD: "));  Serial.print(moduleInformation.COMMAND, HEX);Serial.print(" ");Serial.print(moduleInformation.STARTING_ADDRESS, HEX);Serial.print(" ");Serial.println(moduleInformation.LENGHT, DEC);

	Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
	Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
	Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
	Serial.println("----------------------------------------");
}

Sender


//  See library downloads for each library license.

// With FIXED SENDER configuration
#define DESTINATION_ADDL 3

#include <Arduino.h>
#include "WiFi.h"
#include "LoRa_E220.h"
#include <AsyncTCP.h>
#include "ESPAsyncWebServer.h"
#include <esp_sleep.h>
#include <Ticker.h>

#import "index7.h"  //Video feed HTML; do not remove

// ---------- esp32 pins --------------
 LoRa_E220 e220ttl(&Serial2, 15, 21, 19); //  RX AUX M0 M1

//LoRa_E220 e220ttl(&Serial2, 22, 4, 18, 21, 19, UART_BPS_RATE_9600); //  esp32 RX <-- e220 TX, esp32 TX --> e220 RX AUX M0 M1
// -------------------------------------

#define AUX GPIO_NUM_15

// Replace with your network details
const char *ssid = "XXXX";
const char *password = "XXXXXXXX";

WiFiClient client;

AsyncWebServer server(80);

int data;

struct Message {
 int switchState;
} message;
 
Ticker oneTick;
Ticker onceTick;

String linkAddress = "xxx.xxx.xxx.xxx:80";

portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;

volatile int watchdogCounter;
int totalwatchdogCounter;
int cameraPowerOff = 0;
int watchDog;

void ISRwatchdog() {

  portENTER_CRITICAL_ISR(&mux);

  watchdogCounter++;

  if (watchdogCounter >= 75) {

    watchDog = 1;
  }

  portEXIT_CRITICAL_ISR(&mux);
}

int cameraFlag;
int needAnotherCountdown = 0;

void ISRcamera() {
  batteryOff();
}

bool got_interrupt = false;
 
void interruptHandler() {
  got_interrupt = true;
}  // interruptHandler

void setup() {

  Serial.begin(9600);
  delay(500);
  
  // Startup all pins and UART
  e220ttl.begin();

  e220ttl.setMode(MODE_1_WOR_TRANSMITTER);

  Serial.println("Hi, I'm going to send WOR message!");

  // Send message
  ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, "Hello, world? WOR!");
  // Check If there is some problem of succesfully send
  Serial.println(rs.getResponseDescription());

  //  e220ttl.setMode(MODE_0_NORMAL);

  //  e220ttl.setMode(MODE_0_NORMAL);

  Serial.println("\n\n\nWebserver and");
  Serial.println("E220-900T30D Transceiver for turning ON Videofeed\n");

  wifi_Start();

  attachInterrupt(digitalPinToInterrupt(AUX), interruptHandler, FALLING);

  server.on("/relay", HTTP_GET, [](AsyncWebServerRequest *request) {
    request->send_P(200, PSTR("text/html"), HTML7, processor7);
    data = 1;
    needAnotherCountdown = 1;
    countdownTrigger();
  });

  server.begin();

  oneTick.attach(1.0, ISRwatchdog);  //watchdog  ISR triggers every 1 second
} 

void loop() {
  // If something available
  if (e220ttl.available() > 1) {
    // read the String message
    ResponseContainer rc = e220ttl.receiveMessage();
    // Is something goes wrong print error
    if (rc.status.code != 1) {
      Serial.println(rc.status.getResponseDescription());
    } else {
      // Print the data received
      Serial.println(rc.status.getResponseDescription());
      Serial.println(rc.data);
    }
  }
    
  if (Serial.available()) {
    message.switchState = data;
	  message.switchState = Serial.parseInt();

	  // Send message
	  ResponseStatus rs = e220ttl.sendFixedMessage(0, 2, 23, &message, sizeof(Message));

	  // Check If there is some problem of succesfully send
	  Serial.println(rs.getResponseDescription());
  }  
}

String processor7(const String &var) {

  //index7.h

  if (var == F("LINK"))
    return linkAddress;

  return String();
}

void batteryOff() {
  int data = 2;
  switchOne(data);
  oneTick.detach();
}

void countdownTrigger() {
  // Perform countdown actions here
  Serial.println("\nCountdown timer triggered!\n");
  // Schedule the next countdown if needed
  if (needAnotherCountdown == 1) {
    onceTick.once(60, ISRcamera);
    int data = 1;
    switchOne(data);
    needAnotherCountdown = 0;
  }
}

void switchOne(int data) {

  if (data == 1) {
    int data = 1;
    message.switchState = data;
    Serial.println("Battery Switch is ON");
    Serial.println("ESP32 waking from Deep Sleep\n");
  }

  if (data == 2) {
    int data = 2;
    message.switchState = data;
    Serial.println("Battery power switched OFF");
    Serial.println("ESP32 going to Deep Sleep\n");
  }

	Serial.println("Hi, I'm going to send message!");

	// Send message
	ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, &message, sizeof(Message));
	// Check If there is some problem of succesfully send
	Serial.println(rs.getResponseDescription());
}

void wifi_Start() {

//Server settings
#define ip { 10, 0, 0, 27 }
#define subnet \
  { 255, 255, 255, 0 }
#define gateway \
  { 10, 0, 0, 1 }
#define dns \
  { 10, 0, 0, 1 }

  WiFi.mode(WIFI_AP_STA);

  Serial.println();
  Serial.print("MAC: ");
  Serial.println(WiFi.macAddress());

  // We start by connecting to WiFi Station
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);
  delay(1000);

  //setting the static addresses in function "wifi_Start
  IPAddress ip;
  IPAddress gateway;
  IPAddress subnet;
  IPAddress dns;

  WiFi.config(ip, gateway, subnet, dns);

  Serial.println("Web server running. Waiting for the ESP32 IP...");

  // Printing the ESP IP address
  Serial.print("Server IP:  ");
  Serial.println(WiFi.localIP());
  Serial.print("Port:  ");
  Serial.println("80");
  Serial.print("MAC: ");
  Serial.println(WiFi.macAddress());
  Serial.print("Wi-Fi Channel: ");
  Serial.println(WiFi.channel());
  Serial.println("\n");

  delay(500);

  WiFi.waitForConnectResult();

  Serial.printf("Connection result: %d\n", WiFi.waitForConnectResult());

  server.begin();

  if (WiFi.waitForConnectResult() != 3) {
    delay(3000);
    wifi_Start();
  }
}

void printParameters(struct Configuration configuration) {
	DEBUG_PRINTLN("----------------------------------------");

	DEBUG_PRINT(F("HEAD : "));  DEBUG_PRINT(configuration.COMMAND, HEX);DEBUG_PRINT(" ");DEBUG_PRINT(configuration.STARTING_ADDRESS, HEX);DEBUG_PRINT(" ");DEBUG_PRINTLN(configuration.LENGHT, HEX);
	DEBUG_PRINTLN(F(" "));
	DEBUG_PRINT(F("AddH : "));  DEBUG_PRINTLN(configuration.ADDH, HEX);
	DEBUG_PRINT(F("AddL : "));  DEBUG_PRINTLN(configuration.ADDL, HEX);
	DEBUG_PRINTLN(F(" "));
	DEBUG_PRINT(F("Chan : "));  DEBUG_PRINT(configuration.CHAN, DEC); DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.getChannelDescription());
	DEBUG_PRINTLN(F(" "));
	DEBUG_PRINT(F("SpeedParityBit     : "));  DEBUG_PRINT(configuration.SPED.uartParity, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.SPED.getUARTParityDescription());
	DEBUG_PRINT(F("SpeedUARTDatte     : "));  DEBUG_PRINT(configuration.SPED.uartBaudRate, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.SPED.getUARTBaudRateDescription());
	DEBUG_PRINT(F("SpeedAirDataRate   : "));  DEBUG_PRINT(configuration.SPED.airDataRate, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.SPED.getAirDataRateDescription());
	DEBUG_PRINTLN(F(" "));
	DEBUG_PRINT(F("OptionSubPacketSett: "));  DEBUG_PRINT(configuration.OPTION.subPacketSetting, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.OPTION.getSubPacketSetting());
	DEBUG_PRINT(F("OptionTranPower    : "));  DEBUG_PRINT(configuration.OPTION.transmissionPower, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.OPTION.getTransmissionPowerDescription());
	DEBUG_PRINT(F("OptionRSSIAmbientNo: "));  DEBUG_PRINT(configuration.OPTION.RSSIAmbientNoise, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.OPTION.getRSSIAmbientNoiseEnable());
	DEBUG_PRINTLN(F(" "));
	DEBUG_PRINT(F("TransModeWORPeriod : "));  DEBUG_PRINT(configuration.TRANSMISSION_MODE.WORPeriod, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.TRANSMISSION_MODE.getWORPeriodByParamsDescription());
	DEBUG_PRINT(F("TransModeEnableLBT : "));  DEBUG_PRINT(configuration.TRANSMISSION_MODE.enableLBT, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.TRANSMISSION_MODE.getLBTEnableByteDescription());
	DEBUG_PRINT(F("TransModeEnableRSSI: "));  DEBUG_PRINT(configuration.TRANSMISSION_MODE.enableRSSI, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.TRANSMISSION_MODE.getRSSIEnableByteDescription());
	DEBUG_PRINT(F("TransModeFixedTrans: "));  DEBUG_PRINT(configuration.TRANSMISSION_MODE.fixedTransmission, BIN);DEBUG_PRINT(" -> "); DEBUG_PRINTLN(configuration.TRANSMISSION_MODE.getFixedTransmissionDescription());

	DEBUG_PRINTLN("----------------------------------------");
}

void printModuleInformation(struct ModuleInformation moduleInformation) {
	Serial.println("----------------------------------------");
	DEBUG_PRINT(F("HEAD: "));  DEBUG_PRINT(moduleInformation.COMMAND, HEX);DEBUG_PRINT(" ");DEBUG_PRINT(moduleInformation.STARTING_ADDRESS, HEX);DEBUG_PRINT(" ");DEBUG_PRINTLN(moduleInformation.LENGHT, DEC);

	Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
	Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
	Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
	Serial.println("----------------------------------------");
}

index7.h


//index7.h
const char HTML7[] PROGMEM = R"====(
<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
  <div class="container">
    <header>
      <br><br>This is original H264 video encoded by IP camera; server doesn't do any transcoding.  Wyze Cam v3 video feeds
      <br>Wyze-Bridge Docker, container; which provides webRTC video URL.  Camera maybe offline; depending on battery discharge state.
      <br><br>
    </header>
    <main>
      <iframe class="iframe" width="1300" height="731"src="http://xxxxxx:port/cameraname/" frameborder="0"></iframe> 
    </main>
    <footer>
      <h2><a href="server return link goes here... " >ESP32 Server</a></h2>  
    </footer>
  </div>
</body>
</html>
)====";

14 March 2024 at 16:48 #30045
Renzo Mischianti
Keymaster
Hi William,
Thanks for your feedback.
Bye Renzo
16 March 2024 at 02:15 #30083
William
Participant
Trying to measure current in sleep mode of the E220-900T30D. Current in uA multimeter range is varying from ~1.09 uA to 55 uA while in sleep mode.

Video capture of deep sleep uA multimeter readings.

What can account for these varying readings?

William
- This reply was modified 1 month, 2 weeks ago by William.
- This reply was modified 1 month, 2 weeks ago by William.
17 March 2024 at 10:37 #30101
Renzo Mischianti
Keymaster
Hi William,
It’s normal the device use a WOR cycle to check if some message is coming, you can find more information here.

WOR Cycle
A critical configuration parameter is WOR Cycle, for the sender is essential because It adds a long preamble to the message (long as wake time). The handset uses the wake-up time as the cadence for checking a wake-up message. So if the receiver checks every 2000ms (polling time) if there is a message, the sender adds a 2000ms preamble. The receiver intercepts the message preamble, waits for the actual message to read, and returns to power save mode.

So If you want to maximize the power save, you must put minimal WOR Cycle. If you want more efficiency, you must do the inverse.

Bye Renzo
24 March 2024 at 06:28 #30130
William
Participant
Video E220-900T30D sleep current reading

Appears to be three values displayed in sequence; in the uA current range, what is the meter showing? ESP32 was in deep sleep.

I have been asked what my video is showing. Also, highest reading increases over time; why?

WOR is at default 2000 mS. Current is taken between ESP32 Vin and E220-900T30D device Vcc.

William
- This reply was modified 1 month, 2 weeks ago by William.
- This reply was modified 1 month, 2 weeks ago by William.
- This reply was modified 1 month, 2 weeks ago by William.
- This reply was modified 1 month, 2 weeks ago by William.
- This reply was modified 1 month, 2 weeks ago by William.

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Ebyte E32 Part 8 article modified for E220 library

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