Request

To send commands, use the Request datatype. When your request is processed the Ravas Redbox will send a Response.

Basic requests

A basic request is shown in the code (C) example below. In this example a Uint32_tag is sent to the Ravas RedBox.

Example

//Request type is defined in converted protobuf file from compiler
bool protocol_send_basic_request(Request_Type type, uint32_t val)
{
    Request request         = {};
    request.type            = type;
    request.which_payload   = Request_Uint32_tag;
    request.payload.Uint32  = val;

    return send_request(&request);
}

Scale requests

Request below can be send via a basic request as described above. As payload an Uint32_tag is filled in with the scale index (0)

Request	Payload	Description
`SET_ZERO`	scale_number (uint32)	If scale is in zero range set scale to zero
`SET_TARE`	scale_number (uint32)	Do semi-automatic taring. Scale switches to net mode
`RESET_TARE`	scale_number (uint32)	Reset tare. Scale switches back to gross mode
`SET_ZERO_OR_TARE`	scale_number (uint32)	When the scale is in zero range: equivalent to SET_ZERO. If not: scale perform semi-automatic taring and switches to net mode
`SET_SUM_WEIGHING_ADD`	scale_number (uint32)	Add current weight to the totalizing register
`SET_SUM_FINAL`	scale_number (uint32)	Finalize SUM and store to alibi memory
`SET_SUM_RESET`	scale_number (uint32)	Reset totalizing register

Special scale request

Preset tare

The following code example shows how to send a preset tare value to the scale:

Example

//Request type is defined in converted protobuf file from compiler
bool protocol_send_preset_tare(Request_Type type, uint32_t scale_index, float value)
{
    Request request                             = {};
    request.type                                = type;
    request.which_payload                       = Request_preset_tare_tag;
    request.payload.preset_tare.preset_weight   = value;
    request.payload.preset_tare.scale_number    = scale_index;

    return send_request(&request);
}

Request	Payload	Description
`SET_PRESET_TARE`	PresetTare	Set manual tare value. Scale switch to net mode

Other requests

Request	Payload	Description
`RESET`	none	Restart the system