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The default firmware in CYBLE-013025 is EZ-Serial: https://www.cypress.com/documentation/software-and-drivers/ez-serial-ez-ble-module-firmware-platform
Could you check if you set the UART right on your computer, which should be 115200 baud, 8 data bits, no parity, 1 stop bit, flow control disabled.
You may refer to the user guide chapter 2.2 for details: https://www.cypress.com/file/408286/download
Yes, the UART baud settings are correct. If it is EZSerial it should send @E not @$. And it is only wotking UART TX (module RX) unconnected.
The CYBLE-013025 only supports binary mode and doesn't support text mode with puart. You should set your UART to hex mode to receive the binary log or use a python script (refer to the user guide chapter 12) to see the text log.
Thank you, The problem was I selected a different UART (HCI UART) instead of PUART, i.e. SW1 switches 5, and 6 was on instead of 1, and 2.