This repository contains scripts to create and upload custom tune onto a tile smart bluetooth tracker device.
- openocd
- swd pogrammer (chinese stlink v2 will do)
- dd
- xxd
- bash
- probably a computer
- SWDCLK - E13 test pad or second top-left on J11 pads
- SWDIO - directly to mcu (look nrf52 datasheet)
- GND - J11 test pads top left when looking so that button is above pads
- 3.3V - J11 pads, top right, button is above pads - vcc
First go into tools directory. For a song you can use tune.notes file
or prepare your own. The format is really simple - first value in a line
is a note, second is its duration. You can look up possible values in a
dict.notes file (left column). Lowercase p is used instead of #.
Values that don't look like notes are durations. Special note P is pause
and special duration Z is zero duration. P Z needs to be at the beginning
and the end of a preared song.
Now you need to connect your tile via SWD and dump the firmware. Be aware that it might work only for this particular model, and probably not all of firmware versions as song memory locations are hardcoded. Remember to do a backup of the original firmware - there is no guarantee it will work after modification.
Connect to tile using openocd like below. Run openocd from the current directory:
sudo openocd -d2 -f interface/stlink.cfg -f target/nrf52.cfg
# and in another terminal
telnet localhost 4444
Now list available flash memory banks, you should see two:
flash banks
Download and backup the firmware (one has to be named in.bin):
flash read_bank 0 in.bin
cp in.bin backup.bin
And now the fun part:
./process.sh tune.notes
# now make sure notes.hex and out.bin file was created
# in openocd telnet console
program out.bin
reset
Now your custom ringtone should be working. Connect your phone and try it out. Remember, if you now change a ringtone using your phone, your custom one will not be played (however it stays in device memory as a backup).