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#

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.

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#

Large Version to see detail

Where I evaluate an interesting prototyping board using CircuitPython.

Sources#

• omzlo FIDI
• Github Repository for this entry

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

  

Large Version to see detail