Remote-processing CAMBASIC Manual de usuario descargar pdf (Pagina 135)

Commands - 102

PULSE

Tasking Statement

SYNTAX: PULSE n,a ddress, bit,tim e,p olarity

PURPOSE: To configure a digital output line as a timed, or pulsed o utput.

REMARK S: You may configure up to eight digital I/O lines as independent pulse output. The lines may be on

any digital I/O port. This command allows you to pulse a line for a period of time while executing

other BASIC commands.

n is a pulse reference number and has a range from 0 to 7. This number is used for CL EAR PULSE

and PULSE functions to reference this pulse timer.

The address is the I/O address of an 8– bit port. The range is 0 to 65535 (&FFFF).

The bit parameter is the particular bit of the port. The value ranges from 0 to 7.

The time parameter is the time in seconds that the specified bit is active. You may specify a time

from 0. 005 to 327.67 seconds.

The polarity parameter determines whether the specified bit is active high or low. When polarity is

“1” , the bit goes high during the active time. If the polarity is “0” it goes low during the active

time.

For more information see the Multitasking Chapter.

RELATED: CLEAR PU LSE, PULSE function

EXAMPLE: PULSE 5,0,2,2.55,1

Pulse number 5 is configured to output bit 2 at address 0 so the bit will go high for 2.55 seconds and

then return low. This sequence will execute only once.

ERROR: < Data > 255> - for address

< Data negative> – for n,addr ess,bit,w ait,active

< Time > 327.67 sec> - for t

< Data > 65,535> – for address

< Data out of range> – if bit or bit > 7

1 2 ... 130 131 132 133 134 135 136 137 138 139 140 ... 207 208

Sin comentarios

Remote-processing CAMBASIC Manual de usuario Pagina 135