I am using an EG21-G mini PCIe module with EG21GGBR07A11M1G_30.002.30.002.
EG21 is connected to MCU only via UART(Tx,Rx,RTS,CTS), DTR, PERST, W_DISABLE, so WAKEUP_IN is not connected.
Also I have connected NET_STATUS pin to external LED, to see modem activity.
I still not sure whether module is entered into sleep mode by command: QT+QSCLK. Modem always answared OK.
But LED NET_STATUS is still flicking asi in the idle mode, so I think modem is not enter sleep mode.
I also tried change the DTR pin level (pull up/pull down), nothing happend.
When I change EC21 instead of EG21-G, EC21 enters into sleep mode very nice, NET_STATUS is off.
So i know that my HW + SW is able to enter EC21 into sleep mode, but with EG21-H I am not sure.
Please, can I ask you for advice?