Wellys Dev
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Comparing Board and Language Speeds
Where I compare the execution speeds of different combinations of boards and languages. I will continue to update this post with other languages and processor combinations.
Table for the impatient
ucontroller/Speed(MHz) Method* frequency Language ATSAMD21/48Mhz Integral .6kHz CircuitPython ATSAMD21/48Mhz Integral function .7kHz CircuitPython ATSAMD21/48Mhz Library .7kHz CircuitPython RP2040/133Mhz Integral function 1.0kHz CircuitPython RP2040/133Mhz Library 1.44kHz CircuitPython ATmega328/16MHz struct/function pointer 6.1kHz Arduino C++ ATmega328/16MHz words in an infinite loop 27KHz FlashForth ATmega328/16MHz struct/function pointer 55kHz C ATmega328/16MHz struct/function pointer 56kHz Arduino C++ w/ native toggle ATmega328/16MHz Assembly language toggle 108kHz FlashForth ATmega328/16MHz Assembly language toggle inlined 444kHz FlashForth RP2040/133Mhz struct/function pointer 578.7kHz C RP2040/133Mhz words in an infinite loop 2.841 MHz Mecrisp Forth *See text for an explanation of method. Introduction
While writing about CircuitPython and the FIDI board, I was curious as to the execution speed of CircuitPython on a extremely powerful (relative to the AVR ATmega328) ARM M0+ microcontroller. The M0+ is a modern RISC 32-bit processor with a considerable amount of memory, while the ATmega is 20 year old RISC 8-bit processor with a limited amount of memory. That said, one can’t run CircuitPython on ATmega processors, one must use C or Forth.
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Developing CircuitPython for the FIDI
Where I go into detail as to how I develop code in CircuitPython for the omzlo FIDI board.
Omzlo FIDI
Technical details
- Small!: it measures 25.4mm x 22mm (1" x 0.86")
- Microchip ATSAMD21E18A 32-bit Arm Cortex M0+ running at 48MHz, with 256KB flash, and 32KB RAM
- 4MB flash for CircuitPython code and other files
- Six GPIOs, featuring SPI, I2C, UART, Digital/Analog IO, PWM, …
- 3.5mm terminal block connectors and one 4 pin QWIC/STEMMA QT connector
- 3.3V logic level, maximum 200mA
- USB micro connection to PC
- User-controlled RGB LED
Pinout
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Circuitpython on the omzlo FIDI
Where I evaluate an interesting prototyping board using CircuitPython.
Sources
Introduction
I ran across this board, the omzlo FIDI via an Adafruit blog article. I was struck by its size and utility along with its relative powerful processor for its size. From the webpage:
- Microchip ATSAMD21E18A 32-bit Arm Cortex M0+ running at 48MHz, with 256KB flash, and 32KB RAM
- 4MB flash for CircuitPython code and other files
