/
buttons.go
70 lines (60 loc) · 1.29 KB
/
buttons.go
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package main
type state uint8
const (
stateMenu state = iota
stateSpoolWeight
stateCalibrate
)
var currentState = stateMenu
type menuEntry uint8
const (
menuEntryZero menuEntry = iota
menuEntrySpoolWeight
menuEntryCalibrate
menuEntryMax
)
func (a menuEntry) Name() string {
switch a {
case menuEntryZero:
return "tare/zero"
case menuEntrySpoolWeight:
return "sp weight"
case menuEntryCalibrate:
return "calibrate"
default:
return "???"
}
}
var currentMenuEntry = menuEntryZero
func handleActionButton() {
if currentState == stateMenu {
if currentMenuEntry == menuEntryZero {
offset = currentRawValue
_ = writeOffset(offset)
} else {
currentState = state(currentMenuEntry)
}
} else {
_ = writeScale(scale)
_ = writeSpool(spool)
currentState = stateMenu
}
}
func handleLeftButton() {
if currentState == stateMenu {
currentMenuEntry = (currentMenuEntry + menuEntryMax - 1) % menuEntryMax
} else if currentState == stateCalibrate {
scale = max(1, scale-1)
} else if currentState == stateSpoolWeight {
spool = max(0, spool-1)
}
}
func handleRightButton() {
if currentState == stateMenu {
currentMenuEntry = (currentMenuEntry + 1) % menuEntryMax
} else if currentState == stateCalibrate {
scale++
} else if currentState == stateSpoolWeight {
spool++
}
}