problems with deepsleep of Heltec Vision Master E290 is 2mA instead of the 20uA which is mentioned.

[Fer-byte-123]

Hi,

While testing the Heltec Vision Master E290 V0.3.2

the deepsleep current is 2mA instead of the 20uA which is mentioned in the datasheet.

Do you have any idea how to improve this?

I used the standard deepsleep command from the arduino examples:

 *
 * Function:
 * 1.ESP32 deep sleep achieves low power consumption
 * 
 * * Description:
 * 1.Pin states can be set to achieve stable deep sleep.
 * 2.If equipped with Lora module, please use this low-power instance
 * 
 * To reset the deepsleep on a Heltec Vision Master, you can press and 
 *  hold the Boot key, press RST once, and then release the Boot key. 
 * Now you can upload next program. 
 *
 * Library url: https://github.com/HelTecAutomation/Heltec_ESP32
 * Support: support@heltec.cn
 *
 * HelTec AutoMation, Chengdu, China
 * 成都惠利特自动化科技有限公司
 * https://www.heltec.org
 *
 * */

#include "Arduino.h"
#include "LoRaWan_APP.h"
#include "driver/rtc_io.h"
#include <driver/gpio.h>

#define wakeuptime  10 * 1000 * (uint64_t)1000 //Sleep time

void intodeepsleep()
{
  Mcu.begin(HELTEC_BOARD,SLOW_CLK_TPYE);
  pinMode(18,OUTPUT);
  digitalWrite(18, LOW);
  Radio.Sleep();
  SPI.end();
  pinMode(14,ANALOG);
  pinMode(8, OUTPUT);
  digitalWrite(8, HIGH);
  rtc_gpio_hold_en(gpio_num_t(8));
  pinMode(12,ANALOG);
  pinMode(13,ANALOG);
  pinMode(9,ANALOG);
  pinMode(11,ANALOG);
  pinMode(10,ANALOG);
}

void setup()
{
    intodeepsleep();
    esp_sleep_enable_timer_wakeup(wakeuptime);
    delay(4000);
    esp_deep_sleep_start();
}
void loop()
{
}

[Fer-byte-123]

I tested also the E213, this one also gave 2mA in deepsleep. Can you please mention what i am missing?