Collisions reported during kernel execution

Vitaliy

Hello! I'm trying to start sinusoidal impulses simultaneously on different channels of urukul 9910 using the parallel decorator, as it shown in manual, but I get a "Collisions reported during kernel execution" error, and it doesn't work as it supposed.
The code I use:
for i in range(3000):
with parallel:
self.ch_device_0.set(frequency, 0.0, 0.5) #1
self.ch_device_1.set(frequency, 0.0, 0.5) #2
delay(1ms)
with parallel:
self.ch_device_0.set(frequency, 0.0, 0.0) #1
self.ch_device_1.set(frequency, 0.0, 0.0) #2
delay(1ms)
Thanks.

rjo

This won't work. The SPI bus to the four DDS channels on a Urukul is shared.
Try across different devices.
And obviously don't transfer entire profiles if all you want to do is OOK. The latter can be done in parallel with the RF switches.

Vitaliy

rjo Thank so much, it worked. It takes much less time to set switches, and it seems that it works with parallel, at least it doesn't show any collisions. But as it follows from your statement, the parallel decorator doesn't make any sense in case of single urukul module.

That's what i do now:

       for i in range(3000):     
     
        self.ch_device_0.sw.set_o(True)
        self.ch_device_1.sw.set_o(True)
        delay(1*ms)       
  
        self.ch_device_0.sw.set_o(False)
        self.ch_device_1.sw.set_o(False)
        delay(1*ms)