ascii2decimal conversion

[zby]

In tcl I read a portion of a binary file byte after byte (comes in ascii). To retrieve the desired 'lowlevel' info out of it I need to convert ascii to decimal with tcl functions.
Something like a function in perl:
chr(oct(0x49))....


Any clue on how to do this.
P.S. a newbie.
Thank you.

 

[zby]

I have found a solution:
append res [scan $buff %c]
Thank you for reading.