A method of generating fast exponential pulse output with arm microcontroller

Abstract

The present invention discloses a method for generating rapid exponential pulse output by an using ARM single-chip microcontroller, comprising following steps: (1) setting a timer; (2) inputting necessary parameters of a pulse sequence to be output; (3) computing an exponential curve and storing values of each point into an array; (4) performing following steps in an updating interruption period of the timer so as to output the computed curve array. The present invention provides a method for generating rapid exponential pulse output by using an ARM single-chip microcontroller, realizes the computation of the exponential curve and stores into the array, realizes rapid output of curves by using the timer and realizes symmetrical outputs of acceleration and deceleration of the exponential curve.

Description

technical field [0001] The invention relates to the field of AMR single-chip microcomputer technical equipment, in particular to a method for generating fast exponential pulse output by using an ARM single-chip microcomputer. Background technique [0002] Single-chip microcomputer is a kind of integrated circuit chip, which adopts VLSI technology to combine central processing unit CPU with data processing capability, random access memory RAM, read-only memory ROM, various I / O ports and interrupt systems, timers / counters, etc. Functions (may also include display drive circuit, pulse width modulation circuit, analog multiplexer, A / D converter and other circuits) integrated into a silicon chip to form a small and complete microcomputer system, widely used in the field of industrial control application. From the 1980s, from the 4-bit and 8-bit single-chip microcomputers at that time, to the current 300M high-speed single-chip microcomputers. [0003] In the single-chip microco...

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Problems solved by technology

[0003] In the single-chip microcomputer + stepping servo motor drive system, the motor is required to have the function of acceleration and deceleration during operation to reduce the impact of the mechanical device. Now most of them use simple timer + IO port operation, analog output linear pulse and motion controller Using the drive scheme of the motion controller will lead to high cost and cannot be used in low-cost occasions. Using a single-chip microcomputer to simulate linear pulse output has poor accuracy, unstable frequency, and cannot be smoothly transitioned. The impact of the motion mechanism Big