![]() If you need to disable sleep can disable the automation and publish an MQTT message setting ota_mode then OTA can be done and when that is done ota_mode can be turned OFF and the automation enabled again. Run_duration is calculated from from when MQTT is connected it is set to 10secs, but we want the esp to go to sleep as quickly as possible, rather than estimate the time needed which could be a bit variable over internet we send the esp to sleep as quickly as possible use on_message together with an HA automation. The i2c address for bme280 and bmp280 have to be set to 0x76, the default of 0x77 does not work with either of the devices I have. Oversampling on BME280 is set to 2X to speed up reads. Setting the MQTT Birth and Will message to blank stops the device from going Unavailable while it is asleep which messes with history graphs, you get lots of dots/broken lines ![]() None of my multimeters was able to measure the current drawn by the ESP32 in deep sleep mode. Boot to Sleep time is around two seconds, most of which is connecting to wifi, this could be shortened by setting a static IP. I use fast_connect and reduced logging to INFO rather than the default DEBUG in the hope of shaving off a second or so from the wake time. Yes I know its a security risk, thats why MQTT is on a non standard port to reduce likelyhood of people constantly hitting my Mosquitto server. I used MQTT rather than API because this will be in a remote location and I was not sure API would work with the Home Assistant server behind one NAT firewall and the ESP32 behind another with the internet in the middle. ![]() The device wakes up reads the values from the bme280 and sends them via MQTT. No GPIOs need to be linked on ESP32 to enable deep sleep like they do on ESP8266. This sensor is very power efficient only drawing a few uA when idle and a couple of mA when being read. Unless there is a difference on deep-sleep wake-up that I’ve overseen, you need hardware to solve your problem.How to use Deep Sleep with bme280 and esp32. Here’s the code that puts the device to sleep: include 'espsleep. That means that you can’t control the pull-up/pull-down internal resistors on reset. Getting the ESP32 into Deep Sleep mode is relatively easy. MCU’s GPIOs to control the voltage level of these pins when powering on the chip.Īfter reset release, the strapping pins work as normal-function pins. To change the strapping bit values, users can apply the external pull-down/pull-up resistances, or use the host Pull-up/pull-down will determine the default input level of the strapping pins. Strapping pin is unconnected or the connected external circuit is high-impedance, the internal weak VDD_SDIO and other initial system settings.Įach strapping pin is connected to its internal pull-up/pull-down during the chip reset. The strapping bits configure the device’s boot mode, the operating voltage of Perform a capacitive measurement of the soil moisture level Periodically wake from deep sleep and check if the moisture level is above the threshold Flip the. espsleeppdconfig (ESPPDDOMAINRTCSLOWMEM, ESPPDOPTIONOFF) espsleeppdconfig (ESPPD. I'm successfully invoking the code below: Code: Select all. Battery voltage drops below a certain threshold. Line power is removed (running on battery) 2. ![]() The strapping pins sample the voltage level as strapping bits of ”0” or ”1”, and hold these bits until the chip is I'm attempting to enter deep sleep mode when the following conditions are met: 1. GPIO0 is a strapping pin the datasheet states this:ĭuring the chip’s system reset release (power-on-reset, RTC watchdog reset and brownout reset), the latches of That means that when waking up, it will start up just like on reset. I did not deeply dive into the internals, but as I said before, the chip is mostly powered off in deep-sleep. that is high, though.Ī floating pin with a weak pull-up, no filtering, and perhaps being exposed for the sake of easy reprogramming may be susceptible to noise though latch-ups are not so common these days (the internal pin structure might act like an SCR and short circuit to ground or Vdd). If your problem is not reproducible in the lab, it may be due to environmental causes.Īn unbounded 45K pull-up means that any residual humidity draining 50uA will put you in serious trouble. AFAIK all ESP32 have the same GPIO0 structure. Of course different modules might have different ESP32 variants, but those are in terms of number of cores and memory capabilities. The weak pull-up is a current source inside the ESP32 chip. ![]()
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