Hi!
I have a Camabola2, chipdown on a PCB. I have another computer acting as host on the same PCB. There is a GPIO from the other computer to the C2 that is tied to the C2 reset input line. Occasionally, if I apply a reset to the C2, it does not come back up. It appears to be locked in an unknown state. I can not communicate via serial port to it, nor does the wifi come up. If I reset again, it probably will come up.

Is there a minimum time that I have to apply the reset low before bringing it back high? Right now I apply rest - sleep 500ms - remove reset. I hoped that should be sufficient but it might not be.

Thanks for your help,
JB

Hi,
min reset signal time is 100nS.Carambola module reset pin is connected to supervisor input pin (Fitipower FP6811).
Output of this supervisor is connected to AR9331 sock.

Hi Gedass, Thanks for the reply.
I guess the next question, since my reset is way longer than the 100ns requirement, is why do you think my Carambola2s are not always booting properly? It probably happens once every 25 times.
JB