serial read only returns one byte

[cbrake]

I have created a simple server and client apps:

https://github.com/simpleiot/simpleiot/blob/feature-modbus/cmd/modbus-client/main.go

https://github.com/simpleiot/simpleiot/blob/feature-modbus/cmd/modbus-server/main.go

When I send a packet to the server, it only ever receives one byte.

What causes the the Read() at this location:

https://github.com/tbrandon/mbserver/blob/master/servertu.go#L26

func (s *Server) acceptSerialRequests(port serial.Port) {
	for {
		buffer := make([]byte, 512)

		bytesRead, err := port.Read(buffer)
		if err != nil {
			if err != io.EOF {
				log.Printf("serial read error %v\n", err)
			}
			return
		}

		if bytesRead != 0 {

			// Set the length of the packet to the number of read bytes.
			packet := buffer[:bytesRead]

			frame, err := NewRTUFrame(packet)
			if err != nil {
				log.Printf("bad serial frame error %v\n", err)
				return
			}

			request := &Request{port, frame}

			s.requestChan <- request
		}
	}
}

To read an entire packet, instead of just several bytes?

Thanks,
Cliff

[cbrake]

closing this as this project appears to not be maintained. I started a new modbus library that will implement both client and server functionality:

https://github.com/simpleiot/simpleiot/tree/master/modbus

Examples:

https://github.com/simpleiot/simpleiot/blob/master/modbus/rtu-end-to-end_test.go
https://github.com/simpleiot/simpleiot/blob/master/cmd/modbus-client/main.go
https://github.com/simpleiot/simpleiot/blob/master/cmd/modbus-server/main.go