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Checking the performance of the CC2538 using the usb <-> ttl converter. #19

Closed Ellissar closed 2 years ago

Ellissar commented 3 years ago

I am using JH_2538_2592_ZNP_UART_20201010.hex I suspect my CC2538 is defective. How to check the operability of a microcircuit using a USB <-> TTL adapter? What commands can be sent through the terminal to receive a response from the CC2538?

0x3EC commented 3 years ago

Hi, @Ellissar

After a hard reset CC2538 sends a packet to the port: FE 06 41 80 xx xx xx xx xx xx xx (the first 4 bytes are exactly as I indicated) You can set up communication through the terminal, restart 2538 and see the result.

Maybe your 2538 goes into the bootloader after a reset? PA7 must be high to run the firmware.

Ellissar commented 3 years ago

Hi, @0x3EC I have connected the following pins to CC2538: 3.3V GND PA0 PA1 PA7 is connected directly to 3.3V. All the time.

The answer comes (FE 06 41 80 00 02 02 02 07 02 C0), but not always. I will understand further, I assume that there is not enough power to turn it on.

Thanks!