Skip to content

Latest commit

 

History

History
150 lines (139 loc) · 6.54 KB

README_eng.md

File metadata and controls

150 lines (139 loc) · 6.54 KB

CORE_PHOTO

GyverCore for ATmega328

Version 2.0 from 01.02.2020
Fast and light core for Arduino IDE with advanced configuration. Only for ATmega328 boards!
Based on original Arduino 1.8.9 core, all functions are replaced by faster versions, a bunch of interesting staff is added.
Made by AlexGyver and Egor 'Nich1con' Zaharov from mother Russia.

Install

Automatic

  • Open the Arduino IDE.
  • Open the File > Preferences menu item.
  • Enter the following URL in Additional Boards Manager URLs: 
    https://alexgyver.github.io/package_GyverCore_index.json
  • Open the Tools > Board > Boards Manager... menu item.
  • Wait for the platform indexes to finish downloading.
  • Scroll down until you see the GyverCore entry and click on it.
  • Click Install.
  • After installation is complete close the Boards Manager window.

Manual

  • Place all files from GyverCore to C:\Users\Username\AppData\Local\Arduino15\packages\GyverCore\hardware\avr\1.10.0\

Changes

Faster and lighter

Time of execution, us

Function Arduino GyverCore Times faster
millis 0.69 us 0.69 us -
micros 0.81 us 0.81 us -
pinMode 2.56 us 0.125 us 20.5
digitalWrite 2.40 us 0.125 us 19
digitalRead 2.06 us 0.063 us 33
analogWrite 5.9 us 0.63 us 9.3
analogRead 107.2 us 5.94 us 18
analogReference 0.19 us 0.19 us -
attachInterrupt 1.06 us 1.0 us -
detachInterrupt 0.5 us 0.13 us 3.8
tone 9.0 us 2.25 us 4

Flash, byte

Function Arduino GyverCore Difference
millis 26 24 2
micros 24 20 4
pinMode 114 24 90
digitalWrite 200 24 176
digitalRead 190 24 166
analogWrite 406 48 358
analogRead 32 72 -40
analogReference 0 22 -22
attachInterrupt 212 180 32
detachInterrupt 198 150 48
tone 1410 740 670
Serial begin 1028 166 862
print long 1094 326 768
print string 2100 1484 616
print float 2021 446 1575
parseInt 1030 214 816
readString 2334 1594 740
parseFloat 1070 246 824

Note: analogRead and analogReference has advanced configuration
Sketch with all of functions:

  • Arduino Core: 3446 byte (11%) Flash / 217 byte (10%) SRAM
  • GyverCore: 1436 byte (4%) Flash / 94 byte (4%) SRAM

Empty sketch

  • Arduino Core: 444 byte (1%) Flash / 9 byte (0%) SRAM
  • GyverCore: 202 byte (0%) Flash / 0 byte (0%) SRAM

All libraries, based on Wiring functions, works much faster. Even SPI (more than 2 times faster!)

Added

  • Wide Syntax Coloring Map (include names of registers and bits)
  • Macros bitToggle(value, bit), for fast bit inversion
  • Function digitalToggle(pin), for fast pin inversion
  • Advanced ADC
    • analogStartConvert(byte pin) - start convert from choosed pin
    • analogGet() - get converted value (you can make some actions between start and get)
    • analogPrescaler(uint8_t prescl) - set prescaler for ADC. Prescaler:
      • 2: 3.04 us per conversion
      • 4: 4.72 us per conversion
      • 8: 8.04 us per conversion
      • 16: 15.12 us per conversion
      • 32: 28.04 us per conversion
      • 64: 56.04 us per conversion
      • 128: 112 us per conversion
    • In function analogRead(pin) you can use constants instead of pin number: INTERNAL (get reference voltage) and THERMOMETR (get core temperature). Note: set ADC prescaler to 128
  • uart class is an alternative to Serial, but much faster and lighter.
  • Advanced board menu
    • Bootloader select
    • Clock source and frequency select
    • Save EEPROM when erase, or not
    • Clock out
    • Selectable "system timer" - you can disable it and take control on timer 0 OVF vector
    • Replace Serial by faster uart
    • Disable or configure B.O.D.
    • You can disable default initialization of timers and ADC
    • Compiler version

Board settings

Bootloader - bootloader selection (flash bootloader needed):

  • old bootloader - old stock bootloader
  • optiBoot - actual stock bootloader for all new Arduino boards
  • optiBoot v8 - actual version of optiboot with correct fuses
  • without bootloader with fuses for upload sketch in all of 32 kBytes ща Flash!

Clock - clock source and frequency selection (flash bootloader needed):

  • External 16 MHz
  • External 8 MHz
  • Internal 8 MHz for standalone ATmega chip progects =)
  • Internal 1 MHz
  • Internal 128 kHz - use without bootloader for this clock
  • Note:
    • Time function (delay/millis) are corrected for chosen clock
    • After flash 128 kHz you need to slow down your peogrammer to flash again!

Save EEPROM - save EEPROM after flashing with programmer (flash bootloader needed):

  • enable
  • disable

Clock Out - system clock out on pin D8 (flash bootloader needed):

  • disable
  • enable

System timer - timer0 setting:

  • enable - default settings delay/millis is working as usual
  • disable - timer 0 OVF vector is free! But millis/micros is not working. delay/delayMicroseconds are replaced by _delay_ms и _delay_us

Serial - Serial behavior:

  • default Serial - when you use Serial object, it behave as usual
  • GyverUART - all calls of Serial will be replaced by fast and light uart class

B.O.D. (Brown-out detector) - reset when voltage drop (flash bootloader needed):

  • disable
  • 1.8V - reset when VCC is below 1.7-2.0V
  • 2.7V (default) - reset when VCC is below 2.5-2.9V
  • 4.3V - reset when VCC is below 4.1-4.5V

Initialization - initialization of chip periphery (timers, ADC, etc.)

  • enable - default initialization
  • disable - no initialization

Compiler version

  • default v5.4.0 - stock Arduino IDE compiler (avr-gcc v5.4.0)
  • avr-gcc v8.3.0 - new compiler version: faster compilation and lighter code (more free Flash). But could be unstable in some case