cd build

cmake -DPICO_BOARD=pico_w -DWIFI_SSID="" -DWIFI_PASSWORD="" -DSERVER_IP="" -DSERVER_PORT= ..

make

Sources

https://github.com/iiot2k/pico-lib2/blob/main/src/dev/dev_ds3231/dev_ds3231.c

https://ghubcoder.github.io/posts/awaking-the-pico/

https://github.com/ghubcoder/PicoSleepRtc/blob/master/ds3232rtc.cpp

https://github.com/raspberrypi/pico-examples/blob/master/adc/hello_adc/hello_adc.c