SPI freezing in initialization, while SCK connected to GND

RE: SPI freezing in initialization, while SCK connected to GND

Kenneth — Wed, 20 Jan 2021 08:45:10 GMT

I assume it's a trade-off between code size, resources and still be somewhat pragmatic. It's something that I can see happen in a prototype development situation, I don't see a timeout would help in an end product, it would only happen if there is an electrical failure, in which case a timeout wouldn't really solve anything.

Kenneth

RE: SPI freezing in initialization, while SCK connected to GND

exet — Wed, 20 Jan 2021 04:50:23 GMT

Thanks for the answer. And why does the SDK not provide for handling such an event as a timeout so that the program does not stop in an endless loop waiting for the end of the transaction? After all, the rest of the program should continue to work ...

RE: SPI freezing in initialization, while SCK connected to GND

Kenneth — Mon, 18 Jan 2021 17:41:32 GMT

The clock signal is routed back internally to clock data on miso/mosi, so if you ground clock pin, then this will not occur and you will not get a callback at the end (since no data have been clocked). There is no direct fix to this, since it's hardware implementation, other than to ensure that the clock line is not grounded.

Kenneth