Huzzah32 high consumption

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luca_riva
 
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Joined: Tue Nov 29, 2022 9:24 am

Huzzah32 high consumption

Post by luca_riva »

Hello,
I purchased a Huzzah32 board to check about depp sleep power consumption.
The ev. board is the following one:
https://learn.adafruit.com/huzzah32-esp ... rduino-ide

Unfortunately after programming it I can see that the consumption is about 0.5mA, as shown in the attache picture.

Code: Select all

  Serial.begin(115200);
  delay(1000);

  adc_power_off();
  WiFi.disconnect(false);  // Reconnect the network
  WiFi.mode(WIFI_OFF);    // Switch WiFi off
  btStop();
  esp_bt_controller_disable();

  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH,   ESP_PD_OPTION_OFF);
  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_SLOW_MEM, ESP_PD_OPTION_OFF);
  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_FAST_MEM, ESP_PD_OPTION_OFF);
  esp_sleep_pd_config(ESP_PD_DOMAIN_XTAL,         ESP_PD_OPTION_OFF);
   
  esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);
  esp_deep_sleep_start();
Can you please help me solving this issue?

Thank you very much.

Regards.
Attachments
Consumption.jpg
Consumption.jpg (57.45 KiB) Viewed 73 times

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mikeysklar
 
Posts: 13936
Joined: Mon Aug 01, 2016 8:10 pm

Re: Huzzah32 high consumption

Post by mikeysklar »

0.5mA sounds pretty good for the Huzzah32 breakout.

Are all the LEDs off?

Have you bypassed the voltage regulator. Normally pulling EN low on the Feathers.

More discussion here you might find helpful.

viewtopic.php?f=8&t=120675&start=15

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luca_riva
 
Posts: 2
Joined: Tue Nov 29, 2022 9:24 am

Re: Huzzah32 high consumption

Post by luca_riva »

Hi Mikeysklar,
For wroom or esp8266 I found some people online speaking about 10-20uA in deep slep and even less in hibernation.
As you can see from my code the outputs are not initialized therefore the only one led assembled on the board is switched off.
The 3.3V is provided directly to the 3.3V pin without passing through the voltage regulator.

Thank you.

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mikeysklar
 
Posts: 13936
Joined: Mon Aug 01, 2016 8:10 pm

Re: Huzzah32 high consumption

Post by mikeysklar »

I see.

Have you pulled EN low so the voltage regulator is turned off (I understand you are not using it).

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