Hello support,
I use am5749(custom board) ti-processor-sdk-linux-rt-am57xx-evm-06.03.00.106 and ti-processor-sdk-linux-am57xx-evm-06.03.00.106.
The problem is when the board is started my pcf8574 device pull up all 8 pins.Like I understood from datasheet it is normal but...actually it is not right.
I mean I use it for a control 8 relays and when the board is started but linux is not loaded the state of all the relay is 1. It is can damage something....
The main question is: Is it possible to reconfigure pcf8574 very fast, from u-boot or spl?
I need to send 0x00 to the address of my pcf8574.
BR,
Oleg