You can conditionally enable no-op sources. For example:

set(wifi_srcs "")
if(CONFIG_AT_WIFI_ENABLED)
list(APPEND wifi_srcs "at_wifi.c")
else()
list(APPEND wifi_srcs "at_no_wifi.c")
endif()

esp-idf won't link not used components.

idf.py size-components can help with troubleshooting.

It turned out the issue was in the sx127x chip. After reset I put chip into the sleep mode. It was reporting that the sleep mode is active, but obviously it was not. After I changed sequence into:

go into sleep mode
then into standby mode
and finally back to sleep mode

Everything started ...

Hi,

I have Heltec lora v2 board. It has esp32 and semtech sx127x chips. sx127x is connected via SPI interface. When I'm trying to put both into deep sleep mode, I'm seeing 1.7mA of power consumption. The algorithm is the following:

* init SPI bus ( spi_bus_initialize / spi_bus_add_device )
* read ...