Home Contents | # bis:sendQuery | Bis | Core4 Lua Event System

## SYNOPSIS

Master mode

1. bishandle:sendQuery(addr, ptype, data)
2. bishandle:sendQuery(addr, mtd16)

Slave mode

3. bishandle:sendResponse(data)
4. bishandle:sendResponse(mtd16)
5. bishandle:sendAck()

## DESCRIPTION

The bis:send...() functions perform sending of data using the BiS protocol.

### Master mode

In master mode, the address parameter indicates the address of the slave node. If this is zero, then no addressing is used (point-to-point link).

Form 1 allows sending of arbitrary data. In that case ptype is placed into the PType field of the BiS header.

Form 2 sends a MTD16 formatted message. The PType is chosen automatically. mtd16 is a MTD16 message instance.

### Slave mode

In slave mode, sending of messages is only allowed when a message has been received from the master before. Since this is a reply, no address is necessary, as addressing information is automatically taken from the initial query packet.

Form 3 sends arbitrary data, just as form 1. The PType is automatically taken from query packet that asked for this reply.

Form 4 sends a MTD16 formatted message. mtd16 is a MTD16 message instance.

Form 5 sends an empty response. It is equivalent to bishandle:sendResponse("").

## RETURN VALUE

All forms return a boolean, indicating success.

## NOTES

The BiS protocol supports slave addresses of up to 32 bits. Some smaller devices support only 8 bit addressing, though.

## EXAMPLE

> > > > >
app = event.new() bis = bis.newmaster(app, "/dev/ttyS1", 38400) msg = mtd16.new(0xF00F) msg:append(0x3001, "FNORD!") bis:send(1, msg)

## SEE ALSO

bis.query, bis.queryMTD16, bis.response, bis.responseMTD16, bis.timeout