/
data-rate-utils.js
40 lines (39 loc) · 1.37 KB
/
data-rate-utils.js
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// Copyright © 2024 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
export default (data, selector = 'settings') => {
if (!data) {
return undefined
}
const { [selector]: container } = data
if (!container) {
return undefined
}
const { data_rate } = container
if (!data_rate) {
return undefined
}
const { lora, fsk, lrfhss } = data_rate
// The encoding below mimics the encoding of the `modu` field of the UDP packet forwarder.
if (lora) {
const { bandwidth, spreading_factor } = lora
return `SF${spreading_factor}BW${bandwidth / 1000}`
} else if (fsk) {
const { bit_rate } = fsk
return `${bit_rate}`
} else if (lrfhss) {
const { modulation_type, operating_channel_width } = lrfhss
return `M${modulation_type ?? 0}CW${operating_channel_width / 1000}`
}
return undefined
}