The ASCII backspace code is 8. You didn't say what display device you're using. Not all of them provide a backspace operation. Sometimes, if there is a backspace, it doesn't work the way you want it. If it just repositions the cursor or current display position, you may have to output a backspace, blank, and another backspace. It all depends.
IF IN12=0 THEN 'Cancel
POLLIN 11, 1
POLLIN 5, 1
POLLMODE 2
PAUSE 300
counter=0
DO
counter=counter+1
IF IN12 THEN
PAUSE 50
ELSE
EXIT
ENDIF
LOOP UNTIL (counter=6)
IF IN11=1 AND IN5=1 THEN
SEROUT TX, Lcdbaud,[LcdCls,"Key in PIN",CR]
DO
IF IN12=0 THEN
PAUSE 50
ELSE
EXIT
ENDIF
LOOP
ENDIF
ENDIF
Read the Product Guide for the display (like this one). It shows that the backspace code (8) will cause the cursor to move backwards one column (see page 7). To do what most people think of as a backspace, you may need to output 8 then " ", then 8 again like this:
SEROUT TX, LcdBaud, [8, " ", 8]
Read the documentation and experiment to get what you want.
Francis160791
Posts: 28
Comments
IF IN12=0 THEN 'Cancel
POLLIN 11, 1
POLLIN 5, 1
POLLMODE 2
PAUSE 300
counter=0
DO
counter=counter+1
IF IN12 THEN
PAUSE 50
ELSE
EXIT
ENDIF
LOOP UNTIL (counter=6)
IF IN11=1 AND IN5=1 THEN
SEROUT TX, Lcdbaud,[LcdCls,"Key in PIN",CR]
DO
IF IN12=0 THEN
PAUSE 50
ELSE
EXIT
ENDIF
LOOP
ENDIF
ENDIF
RETURN
SEROUT TX, LcdBaud, [8, " ", 8]
Read the documentation and experiment to get what you want.