Disable wifi for low power operation
Is it possible to disable the wifi radios for lora-only operation?
I guess I could try to put the Lopy into WLAN.STA mode and not connect to anything:
wlan = network.WLAN(mode=WLAN.STA)
but I'm not sure that would be equivalent to disabled hardware.
livius last edited by livius
from ESP documentation
3.3 System Clocks 3.3.1 CPU Clock Upon reset, an external crystal clock source (2 MHz ~ 60 MHz), is selected as the default CPU clock. The external crystal clock source also connects to a PLL to generate a high frequency clock (typically 160 MHz). In addition to this, ESP32 has an internal 8 MHz oscillator, of which the accuracy is guaranteed by design and is stable over temperature (within 1% accuracy). Hence, the application can then select from the external crystal clock source, the PLL clock or the internal 8 MHz oscillator. The selected clock source drives the CPU clock, directly or after division, depending on the application.
bmarkus last edited by bmarkus
In a typical LoRaWAN scenario there are 'A-Class' devices, sending sensor data in every 10 minutes, hour or less. These are in deep sleep between two measurement/transmission period. This way you can save battery. Just disabling WiFi without going to sleep doesn't help too much. Also reduction of clock can help but as far as I see it is not yet supported and do not know what ESP32 supports itself as a minimum clock frequency.
Are there any news about this feature? I'm deploying some LoRa prototypes in a couple of days, and I'd like them to be able to run for a long time out in the wild ;)
abilio last edited by
@tmk854, this option is currently not available, but it will be added in a future firmware release. I invite you to stay tuned to upcoming news.