View Source Grizzly.FirmwareUpdates (grizzly v8.5.3)
Module for upgrading firmware on target devices.
Required options:
manufacturer_id
- The unique id indentifying the manufacturer of the target devicefirmware_id
- The id of the current firmware
Other options:
device_id
- Node id of the device to be updated. Defaults to 1 (controller)firmware_target
- The firwmare target id. Defaults to 0 (the ZWave chip)max_fragment_size
- The maximum number of bytes that will be transmitted at a time. Defaults to 2048.hardware_version
- The current hardware version of the device to be updated. Defaults to 0.activation_may_be_delayed?
- Whether it is permitted for the device may delay the actual firmware update. Defaults to false.handler
- The process that will receive callbacks. Defaults to the caller.any()
The firmware update process is as follows:
Grizzly sends a
firmware_md_get
command to the target device to get the manufacturer_id, hardware_id, max_fragment size, among other info needed to specify a firmware update request. The info is returned via afirmware_md_report
command.Grizzly uses this info to send a
firmware_update_md_request
command to the target device, telling it to initiate the image uploading process. The checksum of the entire firmware image is added to the request. The target device says yeah or nay via afirmware_update_md_request_report
command.If the target device agrees to have its firmware updated, it next sends a first
firmware_update_md_get
command to Grizzly asking for a number_of_reports (a bunch of firmware image fragment uploads) starting at fragmentreport_number
.Grizzly responds by sending the requested series of
firmware_update_md_report
commands to the target device, each one containing a firmware image fragment, with a checksum for the command.Once a series of uploads is completed, the target device either asks for more fragments via another
firmware_update_md_get
command, or it sends afirmware_update_md_status_report
command either to cancel the yet incomplete upload (bad command checksums!), or to announce that the update has completed either successfully (with some info about what happens next) or in failure (invalid overall image checksum!).As part of a successful
firmware_update_md_status_report
command, the target device tells Grizzly whether the new firmware needs to be activated. If it does, Grizzly would then be expected to send afirmware_update_activation_set
command which success is reported by the target device via afirmware_update_activation_report
command.
Summary
Functions
A firmware update is in progress when a FirmwareUpdateRunner
process is running
and has received at least one request for one or more image fragments.
Starts the firmware update process
Stop the current firmware update runner, if any.
Types
@type image_path() :: String.t()
@type opt() :: {:manufacturer_id, non_neg_integer()} | {:firmware_id, non_neg_integer()} | {:device_id, Grizzly.node_id()} | {:hardware_version, byte()} | {:handler, pid() | module() | {module(), keyword()}} | {:firmware_target, byte()} | {:max_fragment_size, non_neg_integer()} | {:activation_may_be_delayed?, boolean()} | {:transmission_delay, pos_integer()}
Functions
@spec firmware_image_fragment_count() :: {:ok, non_neg_integer()} | {:error, :not_updating}
@spec firmware_update_running?() :: boolean()
A firmware update is in progress when a FirmwareUpdateRunner
process is running
and has received at least one request for one or more image fragments.
@spec start_firmware_update(image_path(), [opt()]) :: :ok | {:error, :image_not_found} | {:error, :busy}
Starts the firmware update process
@spec stop_firmware_update() :: :ok
Stop the current firmware update runner, if any.