Hi guys, I wrote a very simple blink and external LED program in the Web IDE and tried to get it to work in the Workbench with no luck. I just copied and pasted the code. It claims that HIGH has not been declared in this scope. I am very new to this. What am I doing wrong? [image]

The error message states High to be the problem, although I cannot see where that came from it needs to be spelt HIGH - C/C++ is case sensitive. Additionally, don’t rely on IntelliSense. Rather run a proper build and observe the actual build messages. To see them you may need to turn on verbose log…

Thanks ScruffR! Appreciate the fast response.

@Motley also if it helps any, we have some troubleshooting steps here: [image] Intellisense: Report Issues Here Particle Workbench hello particle workbench user wave as you’ve no doubt learned, intellisense can be a bit finicky - it’ll flag non-issues in the “Problems” t…

Code working in web IDE doesn't work with Workbench

Developer Tools Particle Workbench

m_m April 22, 2021, 9:02pm 5

@Motley also if it helps any, we have some troubleshooting steps here:

Topic		Replies	Views
[ISSUE] Workbench not finding header files Particle Workbench	8	2157	August 28, 2019
Intellisense include errors when Particle Workbench extension is enabled Particle Workbench	10	292	September 27, 2025
Intellisense: Report Issues Here Particle Workbench	1	4074	November 21, 2025
[ISSUE] Intellisense does not recognize pinReadFast() Particle Workbench	3	1555	May 23, 2019
[ISSUE] Intellisense problem Particle Workbench	17	6944	April 12, 2019

Code working in web IDE doesn't work with Workbench

Related topics