On Thu, Aug 25, 2016 at 06:31:49PM +0200, Nicolas Boullis wrote: > Hi, > > Sorry if my question is off-topic for this list. > > I have a computer that experienced a kernel failure while a was far away > and nobody could reboot it. So I thought it would be nice to have a > watchdog. Unfortunately, to the best of my knowledge, it has no hardware > watchdog, so I thought I should add one. > > Hence, do you have suggestions for I²C-, serial- or USB-connected > watchdog add-ons? It should of course be compatible with linux. > > I found > http://www.berkprod.com/Product_Web_Pages/usb_v1_pc_watchdog.aspx > but I think it is a little too expensive. > > If no such thing exists, I might consider designing my own (open > hardware) I²C- or USB-connected watchdog add-on, using a cheap MCU. But > then I would welcome opinions on what the interface between the host and > watchdog should look like. > Anything you come up with will need a connection to the system reset, so you'll have to have an in-chassis solution. Any cheap MCU with USB or I2C port and a couple of GPIO ports would probably do. If you consider the above product, make sure that you get an assurance that its Linux driver still works - it is quite old. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
