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Keep display freq within possible channels

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This commit is contained in:
rcarteraz 2023-05-20 19:37:14 -07:00 committed by Sacha Weatherstone
parent a4234e9ae6
commit 3856459fce
1 changed files with 13 additions and 6 deletions
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19
src/components/tools/FrequencyCalculator.tsx
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@ -263,16 +263,22 @@ export const FrequencyCalculator = (): JSX.Element => {
useEffect(() => {
const selectedRegion = RegionData.get(region);
const selectedModemPreset = modemPresets.get(modemPreset);
setNumChannels(
Math.floor(
(selectedRegion.freq_end - selectedRegion.freq_start) /
(selectedRegion.spacing + selectedModemPreset.bw / 1000),
),
const calculatedNumChannels = Math.floor(
(selectedRegion.freq_end - selectedRegion.freq_start) /
(selectedRegion.spacing + selectedModemPreset.bw / 1000),
);
setNumChannels(calculatedNumChannels);
let updatedChannel = channel;
if (updatedChannel >= calculatedNumChannels) {
updatedChannel = calculatedNumChannels - 1;
}
setChannel(updatedChannel);
setChannelFrequency(
selectedRegion.freq_start +
selectedModemPreset.bw / 2000 +
channel * (selectedModemPreset.bw / 1000),
updatedChannel * (selectedModemPreset.bw / 1000),
);
}, [modemPreset, region, channel]);
@ -323,6 +329,7 @@ export const FrequencyCalculator = (): JSX.Element => {
))}
</select>
</div>
<div className="flex gap-2">
<label className="font-semibold">Number of channels:</label>
<input type="number" disabled value={numChannels} />