Why can't I read the correct value after programming the fuse?

[ZongYue]

Hi,

After I use fuse prog <bank> <word> <value> to write the SRK_HASH value, I want to use fuse read <bank> <word> to read the data for comparison, but the value returned is 0.

But when the power is turned on again, the correct data can be read.

After writing SRK_HASH, how long do I need to wait for the fuse to complete the prog program?

Thanks,

ZongYue

[Harvey021 · Accepted solution]

Hi,

The fuse values can be effective after SoC reset. Normally.

For comparison, you can use the command line "fuse sense <bank> <word>" after writing and without reset.

Regards

Harvey