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SHIFTOUT

Syntax​

SHIFTOUT Dpin, Cpin, Mode, [OutputData{\ Bits} {, OutputData{
Bits}...}]

Description​

SHIFTOUT has been kept as a compatable function with PBASIC.  It can be used for devices that are not covered by SPI, I2C or 1-Wire.

While most other hardware functions use bytes, SHIFTOUT is oriented for bit control.  The length of each variable defines the number of bits that will be shifted out (2 - 32).  If Bit is not defined it is assumed to be 8.

  • Mode = 0   data is shifted out LSB first
  • Mode = 1   data is shifted out MSB first

SHIFTOUT does not allow arrays or strings to be part of the OutputList. 

Data is shifted out of the device at 1.1 Mbits/sec.

Example​

' use SHIFTIN/OUT to control an SPI EN28J60

rw=2

reg = $1b

io(6)=0

shiftout 3,4,1,[rw\3, reg\5, y]      ' set reg $1B

io(6)=1

io(6)=0

shiftout 3,4,1,[reg]
         'select the register

shiftin 5,4,0,[x]
               'and
read it back

io(6)=1

Differences from other BASICs​

  • none from Visual BASIC
  • simplified from PBASIC

See also​