Find a better way for controlling groups of 7S-display digits (e.g. W1401, W1219)

[TG9541]

Blank, tab, or CR might be suitable.

[TG9541]

Solution details:

• "blank" moves to the next 7S-LED group, and erases it, wrap around to first group
• CR (actually LF) moves to the last group
  This is a bit hacky but it works OK.

On a W1219, the following code writes "F.o.o" to the 1st (red) 7S-LED group, and the timer value to the 2nd (green) group.

FILE
: p cr ."  F.o.o" tim . ; 
' p bg !
HAND

[TG9541]

The first prototype code works but for transparency and ease of use the following requirements shall apply:

• CR shall move the output to the first "tab" group without changing the display contents
• whitespace shall move the output to the next 7S-LED group only if it was not preceded another move
• whitespace shall clear the current 7S-LED group, whether the output has been moved, or not

[TG9541]

The feature now works as described in the previous comment.

[TG9541]

A review revealed that DCDC and W1209 had a problem with the new semantics of HAS_LED7SEG which no longer (kind of) encodes the number of 7S-LED digits but that of the number of LED groups.