I'm using a dedicated library to run a ws2812 led strip. As far as I understand, this library sends a signal using the hardware PWM, via GPIO pin 18. This works fine and the led strip shows the colors I want.
Then I got to work using pigpio in order to bitbang a series of SPI boards connected to the pi (MCP3008 & MCP23s17) This also works, but as soon as I call any of the pigpio wave send functions to do this, the led signal gets completely scrambled, and I get the first 25 leds of the strip showing random colors.
This effect lasts as long as the program runs. I can't get a proper led signal trough untill I stop the code and run it again (without the send wave calls).
The function I'm talking about is the following, the wave I'm sending regards different GPIO pins.
Note also the documentation contains the line "Any hardware PWM started by gpioHardwarePWM will be cancelled.", so it's obvious this function interferes with hardware PWM somehow.
So my question is what exactly pigpio does here, and is there a workaround? I was also looking for manually creating a hardware PWM signal, but pigpio only seems to allow a constant repeating signal (which amusingly I can use to set all my leds to pure white).