The following two components provide a convenient GUI interface to monitor and control the state of 8 digital pins. With the "bitctrl" component, the user can either click on the buttons corresponding to individual bits, or can type a hexadecimal value for all 8 bits into an edit control. The output drive of each pin can also be individually turned on and off (i.e. tri-stated). Likewise, with the "bitdisp" component, the user can see the individual logic values on each pin as well as see a decoded hexadecimal value for all 8 bits. The components are licensed under the GNU LGPL v2.1.

Downloads

• bitdisp-1.0.zip - Contains the precompiled "bitdisp.dll" and "bitctrl.dll" component files.
• bitdisp-1.0-src.zip - Contains the source code to both components.
  

Usage

; To use these components, use either of the following component definitions:
;
; X _bitctrl <D7> <D6> <D5> <D4> <D3> <D2> <D1> <D0>
; X _bitdisp <D7> <D6> <D5> <D4> <D3> <D2> <D1> <D0>
;
; The bitctrl and bitdisp components will respectively control and display the logic
; values present at the <D7> through <D0> pins, with <D7> being the most significant
; bit.

Example

XOUT _bitctrl PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0
XIN _bitdisp PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0

Screenshot

The screenshot below shows the VMLAB Control Panel with a running instance of the "bitctrl" and "bitdisp" components: