Teledyne-lecroy CATC Scripting Language Reference Manual Manual do Utilizador descarregar pdf (Página 39)

HAPTER

Primitives

CATC Scripting Language

result = C # The result is given in

hexadecimal. The result in binary is 1100.

In the call to GetNBits: starting at bit 2, reads 4 bits (1100), and returns the value

0xC.

NextNBits()

NextNBits (<bit_count integer>)

Parameter Meaning Default Value Comments

bit_count integer

Return value

None.

Comments

Reads bit_count bits from the data source specified in the last call to

GetNBits, starting after the last bit that the previous call to GetNBits or

NextNBits returned. If called without a previous call to GetNBits, the result is

undefined. Note that bits are indexed starting at bit 0.

Example

raw = 'F0F0';# 1111000011110000 binary

result1 = GetNBits ( raw, 2, 4 );

result2 = NextNBits(5);

result3 = NextNBits(2);

Trace ( "result1 = ", result1, " result2 = ", result2,

" result3 = ", result3 );

This will generate this trace output:

result1 = C result2 = 7 result3 = 2

In the call to GetNBits: starting at bit 2, reads 4 bits (1100), and returns the value

0xC.

In the first call to NextNBits: starting at bit 6, reads 5 bits (00111), and returns

the value 0x7.

In the second call to NextNBits: starting at bit 11(= 6+5 ), reads 2 bits (10),

and returns the value 0x2.

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Teledyne-lecroy CATC Scripting Language Reference Manual Manual do Utilizador Página 39