PEEK

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Action

Returns the content of a register.

 

 

Syntax

var = PEEK( address )

 

 

Remarks

Var

Numeric variable that is assigned with the content of the memory location address

Address

Numeric variable or constant with the address location.(0-31)

 

Peek() will read the content of a register.

Inp() can read any memory location

 

 

See also

POKE , CPEEK , INP , OUT , SETREG, GETREG

 

 

Example

'-----------------------------------------------------------------------------------------

'name                     : peek.bas

'copyright                : (c) 1995-2005, MCS Electronics

'purpose                  : demonstrates PEEk, POKE, CPEEK, INP and OUT

'micro                    : Mega48

'suited for demo          : yes

'commercial addon needed  : no

'-----------------------------------------------------------------------------------------

 

$regfile = "m162def.dat"                                   ' specify the used micro

$crystal = 4000000                                         ' used crystal frequency

$baud = 19200                                               ' use baud rate

$hwstack = 32                                               ' default use 32 for the hardware stack

$swstack = 10                                               ' default use 10 for the SW stack

$framesize = 40                                             ' default use 40 for the frame space

 

Dim I As Integer , B1 As Byte

'dump internal memory

For I = 0 To 31                                             'only 32 registers in AVR

B1 = Peek(i)                                             'get byte from internal memory

Print Hex(b1) ; "  ";

'Poke I , 1                            'write a value into memory

Next

Print                                                     'new line

'be careful when writing into internal memory !!

 

'now dump a part ofthe code-memory(program)

For I = 0 To 255

B1 = Cpeek(i)                                           'get byte from internal memory

Print Hex(b1) ; "  ";

Next

'note that you can not write into codememory!!

 

Out &H8000 , 1                                             'write 1 into XRAM at address 8000

B1 = Inp(&H8000)                                           'return value from XRAM

Print B1

End