Question on Error Code 254

GTT TFT Support

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pradipsangani
LCD!
Posts: 14
Joined: Sun Sep 18, 2011 11:49 pm

Question on Error Code 254

Post by pradipsangani »

Hi,

Is the error code 254 sent back to the controller/PC after every Successful Command Execution?

Thanks and regards
Pads

Clark
Matrix Orbital
Matrix Orbital
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Post by Clark »

Hi Pads,

The error code 254 is only used when filesystem commands are executed to report that the GTT filesystem has been successfully altered. For most commands it will not be returned.

~Troy
Troy Clark
Design & Development
Matrix Orbital

pradipsangani
LCD!
Posts: 14
Joined: Sun Sep 18, 2011 11:49 pm

Post by pradipsangani »

Hi,

So, is there any other mechanism for controller/PC connected to GTT480272A to know if the sent command has executed successfully?

Please provide me details on this because the system would be robust and reliable if there is any acknowledgement on successful/unsuccessful execution of commands.

Thanks and regards
Pads

Clark
Matrix Orbital
Matrix Orbital
Posts: 881
Joined: Fri Aug 17, 2007 10:58 am
Location: Matrix Orbital
Contact:

Post by Clark »

Hi Pads,

The GTT uses hardware flow control which is quite robust in terms of ensuring successful serial communication. If you'd like to know when a series of commands has executed, you can issue the echo command and the display will send back a string when it has completed all instructions.

Thanks,
~Troy
Troy Clark
Design & Development
Matrix Orbital

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