Lamp dot matrix control device and method and LED stage lamp

Abstract

The invention relates to a lamp dot matrix control device and method and an LED stage lamp. The lamp dot matrix control device comprises a processing module, a filling module, a triggering module anda direct memory access module. The processing module is used for receiving channel function data sent by a light console and calculating each PWM output value according to the channel function data; the channel function data comprises a lamp channel function and a channel value; the filling module is electrically connected with the processing module and is used for converting the PWM output valueinto binary data and storing the binary data in a memory to form a memory array in the memory; the triggering module is used for periodically generating trigger signals; and the direct memory access module is electrically connected with the triggering module and is used for receiving a trigger signal and transmitting the memory array to an external GPIO interface according to the triggering signal, so that a single MCU microprocessor can output a plurality of PWM signal circuits, and meanwhile, the use quantity and the production cost of the MCU microprocessor are reduced.

Description

technical field [0001] The invention relates to the technical field of lamp control, in particular to a lamp dot matrix control device and method, and an LED stage lamp. Background technique [0002] At present, most lighting manufacturers will use multiple Microcontroller Units (MCU) to output PWM to realize the point control function of each lamp bead in the pixel (PIXIE) series lamps. An MCU microprocessor usually has 4 to 6 timers, that is to say, it can generate up to 24 PWM signals, and some timers are also used for other purposes, such as system timing or input capture function, which can be used The PWM signal is very limited. In addition, this will not only increase the number and cost of MCU microprocessors used, but also have communication and synchronization problems between multiple MCU microprocessors, and the corresponding control / driver software also needs to do a lot of synchronization optimization , leading to an increase in cost. Contents of the invent...

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Problems solved by technology

[0003] The present invention provides a lamp dot matrix control device and method, and LED stage lamps to solve the problem of increased cost of point control functions caused by the use of multiple MCU microprocessors

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