VS Arduino - Teensy 3.1/3.2 build errors

Jun 15^th, 2025 at 1:08am (UTC)

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VS Arduino › › › Teensy 3.1/3.2 build errors

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Teensy 3.1/3.2 build errors (Read 4046 times)

Zoran Newbies Offline Posts: 3 Joined: Mar 17^th, 2017	Teensy 3.1/3.2 build errors Mar 17^th, 2017 at 8:22pm	Print Post
	I am trying to build this program: void setup(){} void loop(){} If I choose "Teensy 3.1/3.2" as a target, I get 50 errors like this one: token "{" is not valid in preprocessor expressions kinetis.h:765: note in expansion of macro F_CPU #if (F_CPU == 240000000) If I choose "Teensy 3.0" or "Teensy 3.5", everything works fine. Arduino IDE builds the program without problems. My environment: Arduino 1.8.1, the latest version of Visual Micro, Visual Studio 2015 and 2017 CE, 2 different PCs using Windows 10 Home.


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Teensy 3.1/3.2 build errors Reply #1 - Mar 17^th, 2017 at 9:47pm	Print Post
	Hi, Please switch on "vmicro>compiler>verbose" and "show build properties" so we can see your config Post as .txt file or email to info[at]visualmicro.com with link to this post Thanks maybe no relevant but please note:- if the tool bar is set to Debug instead of Release, then you need to avoid methods in same line with no code. This is a better test Code void setup(){ } void loop(){ }
	« Last Edit: Mar 17^th, 2017 at 10:26pm by Tim@Visual Micro »

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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Teensy 3.1/3.2 build errors Reply #2 - Mar 17^th, 2017 at 10:28pm	Print Post
	More I just tried teensy 3.1/3.2 and it worked fine. It's important to note that teensy has a number of additional options that will appear on the vMicro menu. One of the options controls the speed which is the F_CPU build param. So please state what options you have set? The defaults should just work but we obviously have something wrong. The build output mentioned in my previous post is important if this post doesn't help solve the issue.


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Zoran Newbies Offline Posts: 3 Joined: Mar 17^th, 2017	Re: Teensy 3.1/3.2 build errors Reply #3 - Mar 18^th, 2017 at 6:57am	Print Post
	I found the source of the problem. vMicro - Option 2 drop-down list had a value "CPU Speed:". After change to "CPU Speed: 96 MHz (overclock), the problem disappeared on both computers. Thank you for your help.


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Tim@Visual Micro Administrator Offline Posts: 12191 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Teensy 3.1/3.2 build errors Reply #4 - Mar 18^th, 2017 at 11:31pm	Print Post
	Great thanks. I am not sure why the speed was not selected by default. All board options should select the first item in the list if they have not been set by user. What is your history with teensy? new user? jusrt installed teensy for the first time? or have previously installed older versions of teensy? Thanks


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Zoran Newbies Offline Posts: 3 Joined: Mar 17^th, 2017	Re: Teensy 3.1/3.2 build errors Reply #5 - Mar 20^th, 2017 at 8:47pm	Print Post
	I have a couple of PCs and many Teensy 3.1 or 3.2 boards. We have been using them for maybe 2 years. I haven't tried other Teensy versions but I used different Arduino IDE and Visual Micro versions. I do not know why 2 of our PCs didn't have any speed selected. I do not see what was different in the configurations.


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