Hi again everybody! Hopefully someone has some sage advice:
So I am using ATMega324PBs with a master and several slaves chained together using the UART and multi-MCU mode. This entails using 9-bit serial frames and the MCMCU bit to mask data that is not intended for that MCU, and also to delineate packets.
This has been working great, but now instead of direct connection, I need to send the UART data over the air. To do this my boss found this part: HM-TRP FSK Transceiver https://www.rcscomponents.kiev.ua/datasheets/HM-TRP_433.pdf. However, it has a major problem: it only supports 8 data bits and one stop bit. This doesn't fit my 9 bits, and I get garbage data because of it.
So what I'm looking for is a drop-in data radio that I can connect to my TX and RX pins and have it transfer the 9 data bits and 1 stop bit. Does anyone know of a product like this?
P.S. I am also looking at the LoRa radios, but I am not really familiar with them. Do the ones with a UART interface (as opposed to the SPI units) work as drop-in UART transceivers?