![]() ![]() The Purpose of SleepĮven though scientists are constantly finding new purposes behind sleeping, they have already accumulated a pretty hefty number of reasons why sleep is essential to our well-being. In this article, we will be exploring this very notion, dive deeper into the topic of sleep, and (most importantly) how to utilize it properly to boost performance when gaming or even other areas in your life. However, the opposite relationship also applies, in that sleep can make or break your performance in-game. ![]() I have pulled a couple of gaming all-nighters myself, a fact that I am very not proud of. Have you ever sacrificed sleep for “one more game”? Often one game turns to two, three, four, and the next thing you know the sun is already shining through your windows. Nonetheless, how is sleep correlated to gaming? Well for one, I am sure that gaming has definitely impacted your sleeping schedule in some way or another. ![]() Neuroscientists, until this day, are still trying to figure out the ins and out of sleeping such as its purpose, importance, why we spend a darn long time doing it. Despite this fact, sleep is one of the least understood phenomenons in all biological living things. To put that into perspective, assuming that you live for 70 years, you spend about 23 years of your lives closing your eyes. Most of us spend roughly 1/3 of our lives sleeping. Sleep is an activity that all of us are too familiar with. The new add-on board should be detected by the module during startup and will resolve both hardware issues, also allowing you to power the module normally.Want to rank up or play better? Try sleeping more. With the shield in place current consumption during deep sleep is between 7μA and 10μA depending on the wake source. To fix this issue Pycom has gone ahead and designed a deep sleep shield that needs to be fitted to the module which will take care of powering down the module when a deep sleep command is sent. Because of this, the flash memory always remains powered and never goes to deep sleep. The way our circuit is designed, the VDD_SDIO domain of the ESP32 (which also powers the external flash), is powered externally instead of using the internal regulator in the ESP32 itself. This causes the flash chip to consume around 2mA of current. The flash chip doesn’t enter power down mode because the CS pin is floating during deep sleep. Unfortunately, the second design issue is a bit more problematic. This has a fairly easy work around powering the board via the 3V pin using a supply that is able to deliver at least 400mA drops the deep sleep current to around 2.5mA. This causes the regulator to always stay in PWM mode, keeping it’s quiescent current at 10mA. Unfortunately, the pin used to control this mode is out of the RTC domain, and therefore not usable during deep sleep. When the regulator is set into ECO mode, the quiescent current goes down to 10uA. In high performance PWM mode it offers the lowest output ripple and noise, but the quiescent current is ~10mA. We are using a pin from the ESP32 to control the operating mode of the switching regulator. The DC-DC switching regulator always stays in high performance PWM mode. The first has to do with the DC-DC regulator used on the board. The deep sleep issues with the Pycom boards has two different root causes. Issues around deep sleep with the boards started being raised in the company’s support forums more than a month ago after support for the mode was finally added to the Espressif IDF for the ESP32 chip. ![]()
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