I'm having a issue regarding some UART messages on SC18IM700.
I send, for example, the folowed message by UART:
0x53 0x40 0x02 0x55 0x55 0x50 0x52 0x0A 0x50
That message works properly. I have a PCF controller with 0x40 address. I receive 0xF0 and can see the outputs changed.
In fact, all kind of messages works well, unless when I need to send a 0xFF (eg: 0x53 0x40 0x02 0xFF 0xFF 0x50 0x52 0x0A 0x50). In that case the SC18IM700 doesn't send anything by I2C (I confermed by osciloscope, and nothing hapens on I2C lines).