Check if tx_msg has arrived successfully

Hello, I use DWM1000 and STM32L4 microcontroller.
I programming with STM32CubeIDE. I have already check the communication (for SPI) and its okay.

I have programmed my two custom boards with the example codes of DECAWAVE. The one with the simple-Tx and the other with the simple-Rx code.

I want your help to check if the message tx_msg[] = {0xC5, 0, ‘D’, ‘E’, ‘C’, ‘A’, ‘W’, ‘A’, ‘V’, ‘E’, 0, 0}; , has arrived successfully at my Receiver.

I dont know what command i have to use, to print my buffer to the debbuger. I have serial usb if its help.
Sorry for this question but i’m still training