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Em2GoHome: simplify phase handling

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This commit is contained in:
andig 2024-04-21 11:41:51 +02:00
parent 8d8d404ea9
commit 31de058e4d
1 changed files with 20 additions and 42 deletions
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62
charger/em2go-home.go
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@ -40,9 +40,7 @@ const (
em2GoHomeRegStatus = 0 // Uint16 RO ENUM
em2GoHomeRegConnectorState = 2 // Uint16 RO ENUM
em2GoHomeRegErrorCode = 4 // Uint16 RO ENUM
em2GoHomeRegCurrent1 = 6 // Uint16 RO 0.1A
em2GoHomeRegCurrent2 = 8 // Uint16 RO 0.1A
em2GoHomeRegCurrent3 = 10 // Uint16 RO 0.1A
em2GoHomeRegCurrents = 6 // Uint16 RO 0.1A
em2GoHomeRegPower = 12 // Uint32 RO 1W
em2GoHomeRegEnergy = 28 // Uint16 RO 0.1KWh
em2GoHomeRegMaxCurrent = 32 // Uint16 RO 0.1A
@ -56,9 +54,7 @@ const (
em2GoHomeRegCurrentLimit = 91 // Uint16 WR 0.1A
em2GoHomeRegChargeMode = 93 // Uint16 WR ENUM
em2GoHomeRegChargeCommand = 95 // Uint16 WR ENUM
em2GoHomeRegVoltage1 = 109 // Uint16 RO 0.1V
em2GoHomeRegVoltage2 = 111 // Uint16 RO 0.1V
em2GoHomeRegVoltage3 = 113 // Uint16 RO 0.1V
em2GoHomeRegVoltages = 109 // Uint16 RO 0.1V
em2GoHomeRegPhases = 200 // Set charging phase 1 unsigned
)
@ -193,52 +189,34 @@ func (wb *Em2GoHome) TotalEnergy() (float64, error) {
return rs485.RTUUint32ToFloat64(b) / 10, nil
}
// getPhaseValues returns 3 register values offset by 2
func (wb *Em2GoHome) getPhaseValues(reg uint16) (float64, float64, float64, error) {
var res [3]float64
for i := range 3 {
b, err := wb.conn.ReadHoldingRegisters(reg+2*uint16(i), 1)
if err != nil {
return 0, 0, 0, err
}
res[i] = float64(binary.BigEndian.Uint16(b)) / 10
}
return res[0], res[1], res[2], nil
}
var _ api.PhaseCurrents = (*Em2GoHome)(nil)
// Currents implements the api.PhaseCurrents interface
func (wb *Em2GoHome) Currents() (float64, float64, float64, error) {
b, err := wb.conn.ReadHoldingRegisters(em2GoHomeRegCurrent1, 1)
if err != nil {
return 0, 0, 0, err
}
c, err := wb.conn.ReadHoldingRegisters(em2GoHomeRegCurrent2, 1)
if err != nil {
return 0, 0, 0, err
}
d, err := wb.conn.ReadHoldingRegisters(em2GoHomeRegCurrent3, 1)
if err != nil {
return 0, 0, 0, err
}
return float64(binary.BigEndian.Uint16(b)) / 10,
float64(binary.BigEndian.Uint16(c)) / 10,
float64(binary.BigEndian.Uint16(d)) / 10, nil
return wb.getPhaseValues(em2GoHomeRegCurrents)
}
var _ api.PhaseVoltages = (*Em2GoHome)(nil)
// Currents implements the api.PhaseVoltages interface
func (wb *Em2GoHome) Voltages() (float64, float64, float64, error) {
b, err := wb.conn.ReadHoldingRegisters(em2GoHomeRegVoltage1, 1)
if err != nil {
return 0, 0, 0, err
}
c, err := wb.conn.ReadHoldingRegisters(em2GoHomeRegVoltage2, 1)
if err != nil {
return 0, 0, 0, err
}
d, err := wb.conn.ReadHoldingRegisters(em2GoHomeRegVoltage3, 1)
if err != nil {
return 0, 0, 0, err
}
return float64(binary.BigEndian.Uint16(b)) / 10,
float64(binary.BigEndian.Uint16(c)) / 10,
float64(binary.BigEndian.Uint16(d)) / 10, nil
return wb.getPhaseValues(em2GoHomeRegVoltages)
}
var _ api.ChargeRater = (*Em2GoHome)(nil)