PikaPython

Open source

An ultra-lightweight Python interpreter that runs with only 4KB of RAM, zero dependencies. It is ready to use out of the box without any configuration required

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An ultra-lightweight Python interpreter that runs with only 4KB of RAM, zero dependencies. It is ready to use out of the box without any configuration required

PikaPython

Cross platform ultra lightweight embedded Python engine

PikaPython V2 is now available with a redesigned kernel, higher execution performance, lower Flash and static RAM usage, a unified project CLI, and Code Agent workflows. Explore PikaPython V2.

# 1. Abstract

PikaPython is an ultra-lightweight Python interpreter that runs with only 4KB of RAM, zero dependencies. It is ready to use out of the box without any configuration required and easy to extend with C.

PikaPython also known as PikaScript and PikaPy.

It's very easy to bind C function to python module with the help of Pika Pre-compiler.Only write the API of python in .pyi and the bindings are autoly generated by Pre-compiler.

Get pikapython:

Use Online Project Generator

Generator url: http://pikascript.com

Note: You need the Community Edition license (Now Free) to build Keil projects, and the version of Keil should be newer than v5.36.

PikaPython studio

PikaPython serial terminal, script download and package menage tool.

Quick Start

You can use simulation project to quick start without hardware，or use the out-of-the-box develop board Pika-Pi—Zero.

The board based on STM32G030C8T6 MCU, only 64kB Flash, 8kB RAM can run pikapython with total peripheral device (GPIO、TIME、IIC、RGB、KEY、LCD、RGB). CH340 is deployed to support USB to serial with Type-C USB, support download python script py serial, there are 4 RGB on the board and support the LCD.

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⏩ pika_startup_demo This program demonstrate the 5 startup methods of pikapython.
PikaPython-OpenHardware PikaPython 开源硬件
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Document

https://pikadoc-en.readthedocs.io/en/latest/index.html

How to contribute

https://pikadoc-en.readthedocs.io/en/latest/%E5%A6%82%E4%BD%95%E5%8F%82%E4%B8%8E%E7%A4%BE%E5%8C%BA%E8%B4%A1%E7%8C%AE.html

Folders

src - core code

bsp - mcu/board support

port - OS and package manager

test - unit test

document - developt document

examples - example scripts

package - packages and moudles

pikaCompiler - pre-compiler write by Rust, used to bind C function to python moudle.

pikaPackageManager - pacakge manager

2.Platform support

MCU support

MCU	bsp	gpio	time	uart	pwm	adc	i2c	dac
stm32g030c8	√	√	√	√	√	√	√
stm32g070cB	√	√	√	√	√	√	√
stm32f103c8	√	√	√	√	√	√	√
stm32f103rb	√	√	√	√	√	√	√
stm32f103ze	√	√	√	√	√	√	√
stm32f103rc	√	√	√	√	√	√	√
stm32f401cc	√	√	√	√	√	√	√
stm32f411ce	√	√	√	√	√	√	√
stm32f407ze	√
stm32f407zg	√
stm32h750vb	√
stm32f051r8	√
air32f103cb	√	√	√
ch582	√	√	√	√		√	√
ch32v103r8t6	√	√	√
cm32m101a	√
w806	√	√	√	√	√	√	√
apm32f030r8	√
apm32e103vb	√
bl-602	√	√			√	√		√
bl-706	√
bl-618	√	√	√	√	√	√	√	√
Raspberry Pico	√
ESP32C3	√	√	√
TC264D	√
devc	√
visual-studio	√
EC600N	√
mm32f5277e9p	√	√
xr806(openharmony)	√

Board support

Board	bsp	gpio	uart	pwm	adc	i2c	rgb	lcd	arm-2d
Pika-Pi-Zero	√	√	√	√	√	√	√	√	√

Board	bsp	pika_lvgl
lvgl-vs-simu	√	√
swm320	√	√

Board	bsp	arm-2d
QEMU-arm2d	√	√

Board	bsp	LED	KEY
SmartLoong	√	√	√

OS support

OS	port	GPIO	TIME	PWM
RT-Thread	√	√	√	√
vsf	√	√

OS	port	Google Test	Benchmark
linux	√	√	√

3.Characteristic

(1)Run environment

Support run in mcu without OS or file system. Can run in everywhere with RAM ≥ 4kB and FLASH ≥ 64kB，such as stm32g030, stm32f103c8t6，esp8266.

(2)Develop enviroment

Support REPL by serial.

Support run and program python scripts by serial.

Support IDEs like Keil, IAR, RT-Thread studio and segger embedded studio to develop C moudle.

Support build tools like CMake, makeFile and Scons.

Zero dependencies, zero configuration, out-of-the-box, easy to integrated into privious C projcet.

Eazy to extern customized C moudles.

Support linux.

(3)Syntax

Support subaggregate of python 3 standard syntax.

Support class and method define, encapsulation-inheritance-polymorphism and moudles in .pyi of C module.

More Details About Syntax Support

Syntax	Compile-Time	Run-Time	Shell
Module Define	√	-	-
Module Import	√	√	√
Class Define	√	√	√
Class Inherit	√	√	√
Method Define	√	√	√
Method Override	√	√	√
Method Invoke	√	√	√
Argument Define	√	√	√
Argument Assignment	√	√	√
Object New	√	√	√
Object Free	√	√	√
Object Nest	√	√	√
Control flow	√	√	√

Operator

+	-	*	/	==	>	<	>=	<=	%	**	//	!=	&	>>	<<	and	or	not	in	+=	-=	*=	/=
√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√

Control flow

Syntax	State
if	√
while	√
for in [list]	√
for in range(a, b)	√
for in [dict]	√
if elif else	√
for break/continue	√
while break/continue	√

Module

Syntax	Python Module	C Module
import [module]	√	√
import [module] as	√	-
from [module] import [class/function>]	√	-
from [module] import [class/function>] as	√	-
from [module] import *	-	PikaObj Module Only

List/Dict

Syntax	State
l = list()	√
l = [a, b, c]	√
d = dict()	√
d = {'a':x, 'b':y, 'c':z}	√

Exception

Syntax	State
try:	√
except:	√
except [Exception]:	-
except [Exception] as [err]:	-
except: ... else:	-
raise:	√
raise [Exception]:	-
finally:	-

Slice

Syntax	str	bytes	list
test[i]	√	√	√
test[a : b]	√	√	√
test[a :]	√	√	√

Other keywords/Syntax

yield	is	comprehensions
-	√	-

(4)Develop standard.

Readability first, nearly never use macro function and global argument.

Complete unit testes based on google test.

4.Both talk and show the code：

E-mail: [email protected]

5.Demo

The scripts in demos are in the examples folder.

Demo 01 GPIO

View Code

python

import PikaStdLib
import STM32G0

mem = PikaStdLib.MemChecker()
io1 = STM32G0.GPIO()
time = STM32G0.Time()

io1.setPin('PA8')
io1.setMode('out')
io1.enable()
io1.low()

print('hello pikapython')
print('mem.max :')
mem.max()
print('mem.now :')
mem.now()

while True:
    io1.low()
    time.sleep_ms(500)
    io1.high()
    time.sleep_ms(500)

Demo 02 USART

View Code

python

import PikaStdLib
import STM32G0

time = STM32G0.Time()
uart = STM32G0.UART()
uart.setId(1)
uart.setBaudRate(115200)
uart.enable()

while True:
    time.sleep_ms(500)
    readBuff = uart.read(2)
    print('read 2 char:')
    print(readBuff)

Demo 03 ADC

View Code

python

import PikaStdLib
import STM32G0

time = STM32G0.Time()
adc1 = STM32G0.ADC()

adc1.setPin('PA1')
adc1.enable()

while True:
    val = adc1.read()
    print('adc1 value:')
    print(val)
    time.sleep_ms(500)

Demo 04 PWM output

View Code

python

import PikaStdLib
import STM32G0

time = STM32G0.Time()
pwm = STM32G0.PWM()
pwm.setPin('PA8')
pwm.setFrequency(2000)
pwm.setDuty(0.5)
pwm.enable()

while True:
    time.sleep_ms(500)
    pwm.setDuty(0.5)
    time.sleep_ms(500)
    pwm.setDuty(0.001)

Demo 05 RGB

View Code

python

import STM32G0
import PikaPiZero
import Pika

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PublishedAug 1, 2026

UpdatedSep 17, 2026

Category编程语言

PricingOpen source

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PikaPython

About

PikaPython

Cross platform ultra lightweight embedded Python engine

Get pikapython:

Use Online Project Generator

PikaPython studio

Quick Start

Related Projects

Document

How to contribute

Folders

2.Platform support

MCU support

Board support

OS support

3.Characteristic

(1)Run environment

(2)Develop enviroment

Support REPL by serial.

Support run and program python scripts by serial.

(3)Syntax

Operator

Control flow

Module

List/Dict

Exception

Slice

Other keywords/Syntax

(4)Develop standard.

4.Both talk and show the code：

E-mail: [email protected]

5.Demo

Demo 01 GPIO

Demo 02 USART

Demo 03 ADC

Demo 04 PWM output

Demo 05 RGB

Issues· 0 open

> Tags

> Discussion

> Details

> Related tools