support sending ack_information nack, ack, busy ?

[leoujz]

there's a repetition mechanism, make my device receiving 4 repeated packets for each knx command. is there any support to send an ack to the bus. I have dig into the source code and found that it supports to set wait_ack or not wait_ack. I'm using tpuart now.
Thanks.

[thelsing]

Ack in TpUart should work.
The code for ack starts here:

knx/src/knx/tpuart_data_link_layer.cpp

Line 257 in 4dda99b

uint8_t c = 0x10;