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// Copyright 2016 Martin Hebnes Pedersen (LA5NTA). All rights reserved.
// Use of this source code is governed by the MIT-license that can be
// found in the LICENSE file.
package app
import (
"encoding/json"
"fmt"
"strconv"
"strings"
"github.com/la5nta/wl2k-go/rigcontrol/hamlib"
)
var bands = map[string]Band{
"160m": {1.8e6, 2.0e6},
"80m": {3.5e6, 4.0e6},
"60m": {5.2e6, 5.5e6},
"40m": {7.0e6, 7.3e6},
"30m": {10.1e6, 10.2e6},
"20m": {14.0e6, 14.4e6},
"17m": {18.0e6, 18.2e6},
"15m": {21.0e6, 21.5e6},
"12m": {24.8e6, 25.0e6},
"10m": {28.0e6, 30.0e6},
"6m": {50.0e6, 54.0e6},
"4m": {70.0e6, 70.5e6},
"2m": {144.0e6, 148.0e6},
"1.25m": {219.0e6, 225.0e6}, // 220, 222 (MHz)
"70cm": {420.0e6, 450.0e6},
}
type Band struct{ lower, upper Frequency }
func (b Band) Contains(f Frequency) bool {
if b.lower == 0 && b.upper == 0 {
return true
}
return f >= b.lower && f <= b.upper
}
type Frequency int // Hz
func (f Frequency) String() string {
m := f / 1e6
k := (float64(f) - float64(m)*1e6) / 1e3
return fmt.Sprintf("%d.%06.2f MHz", m, k)
}
func (f Frequency) MarshalJSON() ([]byte, error) {
type obj struct {
Hz json.Number `json:"hz"`
KHz json.Number `json:"khz"`
Desc string `json:"desc"`
}
return json.Marshal(obj{
Hz: json.Number(fmt.Sprint(int(f))),
KHz: json.Number(fmt.Sprint(f.KHz())),
Desc: f.String(),
})
}
func (f Frequency) KHz() float64 { return float64(f) / 1e3 }
func (f Frequency) MHz() float64 { return float64(f) / 1e6 }
func (f Frequency) Dial(mode string) Frequency {
mode = strings.ToLower(mode)
// Try to detect FM modes, e.g. `ARDOP 2000 FM` and `VARA FM WIDE`
if strings.Contains(mode, "fm") {
return f
}
offsets := map[string]Frequency{
MethodPactor: 1500,
MethodArdop: 1500,
// varahf doesn't appear in RMS list from WDT
"vara": 1500,
}
var shift Frequency
for m, offset := range offsets {
if strings.Contains(mode, m) {
shift = -offset
break
}
}
return f + shift
}
func SetFreq(rig hamlib.VFO, freq string) (newFreq, oldFreq int, err error) {
oldFreq, err = rig.GetFreq()
if err != nil {
return 0, 0, fmt.Errorf("unable to get rig frequency: %w", err)
}
f, err := strconv.ParseFloat(freq, 64)
if err != nil {
return 0, 0, err
}
newFreq = int(f * 1e3)
err = rig.SetFreq(newFreq)
return
}
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