I have this snippet for ESP32 with a GPRS/module which works when I use Serial Monitor software in my laptop.

i have tried to follow the embassy serial example for ESP32 module to communicate with a GPRS/GSM module via UART with the minimal setup
 //! The following wiring is setup:
//! - TX => GPIO15
 //! - RX => GPIO14

Here is the code snippet
https://www.rustexplorer.com/b/iebphi

How can I send commands to the module and check responses?