MA pointers pointing to something else when sampling audio.

[JRatt.2]

Im trying to build a guitar pedal on a STM32F446RE. 'SoundIN' is assigned to a pointer that is assigned to address value of the adc samples. 'SoundOUT' is half of soundIN (Just a test to see if works). However, output pointer '*outPoint' is showing a different value. When I input a sine wave of say 2Vpp, I get the exact same signal out. Shouldn't I be getting 1Vpp at the output ?

Figure 1 shows the debugger output. Shouldn't 'outPoint' be a similar value to 'soundOUT' ?

Figure 2 shows my double buffering code.

[KnarfB]

Fig. 2 shows the conversion of a single audio sample, not a buffer. I would expect a for loop somewhere.

When the debugger stops at the green line, the assignment to *outPoint was not yet executed, and Fig. 1 shows the previous value at that address.

hth

KnarfB

[JRatt.2]

Thanks for your answer. Something like this ?

[KnarfB]

Well, not completely. This is more about C programming. You might want to check/follow Phil's Lab video, e.g. https://youtu.be/zlGSxZGwj-E?t=971

hth

KnarfB

[JRatt.2]

I tried using Phil's method but it also didn't work.

This is my new code. It still doesn't work, unfortunately.