Interfacing with scanner using terminal ?

Thanks Dino, it's a bit outdated since I added PCI-bus transceiver.
Datacode byte has an unreported change:



Consult the
void send_usb_packet(uint8_t bus, uint8_t command, uint8_t subdatacode, uint8_t *payload, uint16_t payload_length)

function in the source code for up to date techniques.

The scanner expects UART baudrate of 250000 (8-N-1). Minicom does not allow this baudrate, though.

The boot sequence you saw is ESP32's boot log transmitted at 115000 baud. I tried this with Minicom and shows properly.

Next, scanner changes baudrate to 250000 and loses respect from Linux.

The other button is connected to the ESP32's boot pin.
If you press both and release Reset button first (and then Boot button), then ESP32 starts is bootloader mode (to be re-programmed).
It's a good workaround if ESP32 autoreset (via DTR and RTS pins) doesn't work.

Here is a simple ping test if you get the settings right:

[<-TX] Handshake request:
3D 00 02 01 00 40

[RX->] Handshake response:
3D 00 11 81 00 43 48 52 59 53 4C 45 52 53 43 41
4E 4E 45 52 45

[INFO] Handshake OK: CHRYSLERSCANNER


I don't know how byte arrays could be sent from Terminal.

Nope, but I'm going to add a baudrate selector feature to GUI and scanner firmware, later today.
Hold on.

Edit: updates are out.

Both LEDs flashing is a good sign. It means the scanner received a valid packet and responded either ok or error.

I did not try the GUI under Ubuntu VM.