I want to create an external object to control a quad DAC board with a Raspberry Pi, namely this one. As the object should run at signal rate, I'm confused as to how I should control the rate of values sent to the DAC.

Since all signal objects in Pd work on DSP ticks, processing as many samples as the block size as fast as possible, how should I go about sending values to the DAC on a one-sample based clock? Is resampling the way to go? If so, how can this be done? I'm checking the source files, specifically d_dac.c and m_pd.h, but can't make much out of it. My C skills are very limited, hence all the questions above...