Advantech PPC-L156T Manual do Utilizador descarregar pdf (Página 45)

35 Appendix A

A.2 Watchdog programming

Bellow is a sample of programming code for controlling the Watchdog

Timer function.

-----------------------------------------------------------------------------------

Enter the extended function mode, interruptible double-write |

-----------------------------------------------------------------------------------

MOV DX,2EH

MOV AL,87H

OUT DX,AL

-----------------------------------------------------------------------------

Configured logical device 8, configuration register CRF6 |

-----------------------------------------------------------------------------

MOV DX,2EH

MOV AL,07H; point to Logical Device Number Reg.

OUT DX,AL

MOV DX,2FH

MOV AL,08H; select logical device 8

OUT DX,AL;

MOV DX,2EH

MOV AL,30H;Set watch dog activate or inactivate

OUT DX,AL

MOV DX,2FH

MOV AL,01H; 01:activate 00:inactivate

OUT DX,AL;

MOV DX,2EH

MOV AL,F5H; Setting counter unit is second

OUT DX,AL

MOV DX,2FH

MOV AL,00H

OUT DX,AL;

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 53 54

Sem comentários

Advantech PPC-L156T Manual do Utilizador Página 45