IC card read and write, I just do a lot of function is normal, is to write in writing the CARDS sometimes card failure, but the data has been read out to mend the, that is to say, in fact have already written in the data, but returned to the result of the failure, how to return a responsibility? How to solve it? Emergency...

CodePudding user response:

Looking for equipment suppliers, let them see if interface usage has a problem,

CodePudding user response:

Will write several sectors, including a sector an error?
Estimates that have to deal with, and then write already entered data, back into the original
It is not like a database, a transaction can use the

CodePudding user response:

PB call?

CodePudding user response:

Did you try to bring the demo also returns failure, if it is, then the interface problem, or the return value is opposite the failure and success

CodePudding user response:

Not afraid of failure and they were afraid to fail occasionally

CodePudding user response:

Interface function, have write check function, after you've written, you can call it again check function, can more insurance

I didn't make so complicated, write directly, finished

CodePudding user response:

Ming?
Post your code, it should be your code, this a very mature

CodePudding user response:

Write a function to use what type? A string or a blob. If writing is the string can try to switch to a blob

CodePudding user response:

Things really mature, minghua key code to consider, there is no doubt that equipment