›

Can you load an application with persistent storage onto a MetaWear R?

TerryTerry
in Firmware
I would like to use a MetaWear board as a smart BLE device that would calculate a code on command.  For example:

// in the MetaWear

static int seed = 0;
int myCommand ( int myValue) {
  seed++;
  return (seed * myValue);
}


Now, whenever I send a command to the MetaWare:  "myCommand(20)"
I expect to get back  20, 40, 60, 80 ...
The board would remember what the static seed value is.

My use case is more complicated than this; I want to calculate a value based on a numerical key that is stored in the firmware.  The MetaWear broadcasts a BLE advertisement packet of some type such as "Terry's MetaWear #1234", and my app would connect, ask for the calculated value, then disconnect.

Is this possible with the current firmware or would the firmware authors have to add a custom bit of API just for this purpose?  Can I update the firmware myself?

Thanks for any help,
Terry

Comments

  • EricEric
    Using the NvM to store custom data is not supported in the current firmware build (v 1.0.3); the NvM only stores MetaWear commands and logged sensor data.  The closest thing to what you want would be to modify the scan response in the ad packet.
This discussion has been closed.