VSDSP Forum

Hi, I have been having a hard time to use the DspIir2Lq function from dsplib. I notice that the header definition shows it returns s_int32, but when I look at the dis-assembly of my program it seems to return only a 16 bit value in A0, so I cast it to a s_int16. I am calling it like this: // declare...

Thank you!

Hello, to get started with writing plugins I made a very simple one with what I learned from the DTMF example. This one just outputs zeroes to one channel so I can tell it is working: #include "vs1003.h" auto void Silence(register __i1 s_int16 *lr, register __b0 s_int16 n){ register __i2 s...

Thanks for that extra detail. I have not been using shared mode, there are several other devices on the SPI bus so I am not sure how I could do it. The GPIO are all connected to user controls, so I think I will just check for the RTMIDI mode and if it is set I will go into a "self test" mo...

Hello,

I have found the source code for the DTMF example and the PCM Mixer to be very helpful.

Is the source for the AD Mixer and the Spectrum Analyzer available somewhere?

Thanks! That is a very clear explanation.

Hello, in my application I want to use all 8 GPIO for inputs from switches, and I cannot be sure that they will always be low when the hardware reset happens. I know I could use a single IO pin from my processor to pull those two lines low when I make the reset, but I want to reserve the processor p...

Thanks Pasi

That is exactly what it was - I meant to have mode 0x0820 but put in 0x8020 instead. (I use microphone instead of line in) .

It works very well now, my board can read an MP3 file from a USB stick and play it back with no problems.

I'll post my other question in a new thread.

Hello, I am using vs1053b chip on my own PCB, it is controlled by PIC24FJ64GB004 processor. I have not been able to make the sine test work by writing the SDI test sequence, but I can make the sine test by using the "New Sine and Sweep Tests" with the SCI interface. I have set the allow te...