The invention discloses a computer ARGB light asynchronous series controller and a control method, a main control
chip is internally provided with a TIM
timer, a GPIO resource and a DMA resource, the precision of the TIM
timer is less than or equal to 100ns, and an independent ARGB light PWM
signal is generated through a cooperation mechanism of a hardware-level TIM
timer, the GPIO resource and the DMA resource; the controller supports free switching of asynchronous / synchronous
modes, not only can be separated from a mainboard to operate independently (asynchronous mode), but also can be synchronized with a mainboard ARGB
signal (synchronous mode), adapts to a mainstream mainboard (such as ASUSAura and MSIMyricLight), meets lamp effect control requirements in different scenes, greatly reduces resource occupation compared with a traditional multi-channel PWM output scheme through a hardware-level TIM + GPIO parallel output and DMA
transmission technology, and has the advantages of being simple in structure, convenient to operate, low in cost and the like. The lamp effect response speed lt is ensured; and meanwhile, the DMA is adopted to accelerate
data transmission, so that the CPU
occupancy rate is reduced, the problem of
frame rate reduction during
parallel rendering is avoided, and the smooth and stable light effect is ensured.