- #Arduino 1.8.5 serial buffer setting how to
- #Arduino 1.8.5 serial buffer setting generator
- #Arduino 1.8.5 serial buffer setting software
Several other ATMega/Tiny processors also have this type of timer, but they are not too common Timer 4 on this processor/module is unique in that it can be connected to the processors main clock or can be connected to the PLL contained in the ATMega32U4 providing higher initial frequencies and some additional scaling values including 1.5x clock, providing more combinations of count values to produce an output signal closer to any desired frequency. It can be used while also using all other functions of the module.
#Arduino 1.8.5 serial buffer setting generator
The frequency generator will output a square wave signal with a 50% duty cycle from 1 Hz to approximately 12MHz, using hardware contained within the Pro Micro module itself. This signal may be used to output an adjustable frequency square wave signal to any user defined device or circuit. This library implements a variable frequency generator using Timer 4 on an Arduino Pro Micro module (using an ATMega32U4). It should be noted that other Arduino modules with the ATMega32U4 processor could also be used, including the Arduino Leonardo and Arduino Micro and possibly others.
#Arduino 1.8.5 serial buffer setting how to
Finally, because both the frequency generator and frequency counter depend on the Pro Micro’s normally uncalibrated internal crystal oscillator, details of how to modify the module to improve the accuracy of the oscillator is detailed.
It is assumed that the user will then write a main module that deploys these modules for whatever purpose is desired, and may include an LCD display, a keyboard or other external interface, or may be part of some larger project the user needs. Unlike many of the projects listed on this site, instead of implementing some final device, this project focuses on the functional blocks for a frequency generator and a frequency counter. This may be done via a serial port or alternatively, with 4 push button switches and an LCD display to use these functions as a stand alone device. As part of this project a common main module is also included that can be used to set up the frequency generator or read the frequency from the frequency counter. Since they are independent functions they will be covered separately. These functional blocks can be used separately or together in a larger application or as a stand alone device.
#Arduino 1.8.5 serial buffer setting software
This project implements either or both of these functional blocks using only a low cost (≈$5-$17) Pro Micro (Sparkfun DEV-12640 or equivalent clone) module with an ATMega32U4 processor chip and software implemented using the Arduino IDE compiler and environment.
Many times it is necessary to produce a programmable frequency output or implement a frequency counter for various uses.