INfinity 510 Protocol Reference Guide - Sirit

Chapter 15 - Modem Namespace
modem.protocol.isoc.alien.block_read_lock
Perform Alien custom command, BlockReadLock. This command will
lock/unlock user memory blocks for reading on some Alien silicon based
tags. A block is 4 contiguous words in user memory. Block 0 is words 0-3,
Block 1 is words 4-7, etc. The read_lock parameter is a bit map with the
following definition:
MSB
LSB
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
0 1 2 3 4 5 6 7 Block affected
If the bit = 1, then the block is locked.
If the bit = 0, then the block is unlocked.
This command is only successful when the tag is in the secured state.
The following example locks Block 0, which is the first 4 words of user
memory, and unlocks all other Blocks.
>>> modem.protocol.isoc.alien.block_read_lock
(pwd=12345678, read_lock=0x80)
ok
Type
Permissions
Parameters
function
guest=x,admin=x
tag_id (array)
pwd (array)
antenna (int)
read_lock (int)
modem.protocol.isoc.control.cmd_retries
This variable sets the number of command retries for failed command.
When a command sequence fails, it can be retried for the number of times
indicated by this parameter. This is transparent to the user.
Type
var
Permissions
Data Type
int
Default 3
Min 0
Max 8
guest=-,admin=rw
182 INfinity 510 Protocol Reference Guide