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enervent-ctrl
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gh-24 ReadRegister uses common modbus.Client

This commit is contained in:
Jarno Rankinen 2023-03-09 21:51:43 +02:00
parent 602a560cf9
commit d0d26d346a
1 changed files with 5 additions and 10 deletions
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15
enervent-ctrl-go/pingvinKL/pingvinKL.go
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@ -147,6 +147,8 @@ func readCsvLines(file string) [][]string {
return data
}
// Create modbus.Handler, store it in p.handler,
// connect the handler and create p.modbusclient (modbus.Client)
func (p *PingvinKL) createModbusClient() {
// TODO: read configuration from file, hardcoded for now
p.handler = modbus.NewRTUClientHandler("/dev/ttyS0")
@ -171,6 +173,7 @@ func (p *PingvinKL) Quit() {
}
}
// Update all coil values
func (p *PingvinKL) updateCoils() {
results, err := p.modbusclient.ReadCoils(0, uint16(len(p.Coils)))
if err != nil {
@ -195,17 +198,9 @@ func (p *PingvinKL) updateCoils() {
}
}
// Read a single holding register, stores value in p.Registers
// Returns integer value of register
func (p *PingvinKL) ReadRegister(addr uint16) (int, error) {
// handler := p.getHandler()
p.buslock.Lock()
defer p.buslock.Unlock()
err := p.handler.Connect()
if err != nil {
log.Println("ERROR: ReadRegister:", err)
return 0, err
}
// defer handler.Close()
// client := modbus.NewClient(handler)
results, err := p.modbusclient.ReadHoldingRegisters(addr, 1)
if err != nil {
log.Println("ERROR: ReadRegister:", err)