Patch.init() simple led toggle example c++ not working for me

Troubleshooting and Support
1

Hello there,

I am having problems to run the Momentary_Switch.cpp example. The led on my patch.init() will not lighten up. I am using the following code.

I read somwhere that i should add System::Delay(1); to the while loop. But that seems pointless to me.

Any ideas?

#include "daisy_patch_sm.h"
#include "daisysp.h"

using namespace daisy;
using namespace patch_sm;
using namespace daisysp;

/** Hardware object for the patch_sm */
DaisyPatchSM patch;

/** Switch object */
Switch button;

int main(void)
{

	
    /** Initialize the patch_sm hardware object */
    patch.Init();

    /* Initialize the switch
	 - We'll read the switch on pin B7
	*/
    button.Init(patch.B7);

    /** loop forever */
    while(1)
    {
		
		/** Debounce the switch */
        button.Debounce();

        /** Get the current button state */
        bool state = button.Pressed();

        /** Set the onboard led to the current state */
        patch.SetLed(state);
    }
}
2

Hi,
I don’t have a patch init, but I think the led is connected to the CV_OUT_2 (C1). So maybe try this:

/** loop forever */
    while(1)
    {
		
		/** Debounce the switch */
        button.Debounce();

        /** Get the current button state */
        bool state = button.Pressed();

        /** Set the onboard led to the current state */
        patch.WriteCvOut(CV_OUT_2,state ? 5.f : 0.f);
    }
2 Likes
3

Hi maasijam,

thanks for your suggestion. Unfortunatly this didnt change anything. No led flash under c++.

I did another test with puredata to be sure that the led is working. With pd2dsy I had no problems to let the led flash. Also the led flashes once when powering on the module.

4

Using patch.Init() - I just built and ran the program from the first post, with the change suggested in the second post, and it worked correctly.

3 Likes
5

SInce I am starting with the daisy vscode environment I did a small but crucial mistake.

I switched from using:

CTRL P + 
task build_and_program_dfu

to

make program-dfu

in my bash. I thought both commands compile my code before uploading but only the first one does. for the second one I have to use make beforehand.
Now everything works like expected…

4 Likes