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<h1 align="center" style="margin: 30px 0 30px; font-weight: bold;">PikaPython</h1>

<h4 align="center">Cross platform ultra lightweight embedded Python engine</h4>

<p align="center">

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<a href="README_zh.md" >中文页</a> |

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<a href="https://pikadoc-en.readthedocs.io/en/latest/index.html" >Documents</a> |

<a href="https://space.bilibili.com/5365336/channel/detail?cid=202329">Videos</a> |

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[](https://pikastech.github.io/PikaPython/dev/bench/)

# 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.

<img src="https://user-images.githubusercontent.com/88232613/147799704-d79345da-a2b9-4593-b1eb-ff9de127429a.png" width="500"/>

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)](https://www.keil.com/pr/article/1299.htm) to build Keil projects, and the version of Keil should be newer than v5.36.

[](http://pikascript.com)

## PikaPython studio

PikaPython serial terminal, script download and package menage tool.

[](https://gitee.com/Lyon1998/pikapython/attach_files/1285327/download)

# Quick Start

You can use [simulation project](https://pikadoc-en.readthedocs.io/en/latest/Keil%20%E4%BB%BF%E7%9C%9F%E5%B7%A5%E7%A8%8B.html) to quick start without hardware，or use the out-of-the-box develop board [Pika-Pi—Zero](https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-23991764791.11.37216340XZtYt9&id=738387991209).


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](https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-23991764791.12.16f97c58fsLjVk&id=660745643102).

# Related Projects

- ▶️ [pikapython Binding For LVGL](https://github.com/lvgl/lv_binding_pikascript)

- ⭐ [pikapython Bluepill Demo In PlatformIO — Python-like REPL 🐍🔌](https://github.com/maxgerhardt/pikascript-pio-bluepill)

- ⭐ [pikapython Bluepill Demo In GCC 🐍](https://github.com/Chandler-Kluser/pikascript_gcc_bluepill)

- ⏩ [pika_startup_demo](https://gitee.com/kcfkwok/pika_startup_demo) This program demonstrate the 5 startup methods of pikapython.

- 🎮 [PikaPython-OpenHardware](https://gitee.com/Lyon1998/pikapython_openhardware) PikaPython 开源硬件

- 💻 [pikapython-msvc-qt](https://gitee.com/zuto360_460135301/pikapython-msvc-qt) 移植pikapython到windows平台，基于QT，采用MSVC编译器，移植pthread库，支持多线程。

# 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](../../tree/master/src) - core code

[bsp](../../tree/master/bsp) - mcu/board support

[port](../../tree/master/port) - OS and package manager

[test](../../tree/master/port/linux/test) - unit test

[document](../../tree/master/document) - developt document

[examples](../../tree/master/examples) - example scripts

[package](../../tree/master/package) - packages and moudles

[pikaCompiler](../../tree/master/tools/pikaCompiler) - pre-compiler write by Rust, used to bind C function to python moudle.

[pikaPackageManager](../../tree/master/tools/pikaPackageManager) - pacakge manager

# 2.Platform support

## MCU support

!INCLUDE "bsp.mdpp"

## Board support

!INCLUDE "board.mdpp"

## OS support

!INCLUDE "os.mdpp"

# 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.

<img src="assets/1641178790145-2f026e70-4ba1-4e9a-b05f-c602b2bd8cad.png" width="400" alt="微信交流群"/><br/>

#### Support run and program python scripts by serial.

<img src="document/image/134841230-85de6734-8467-4245-93a5-d452b5022b42.gif" width="400" alt="微信交流群"/><br/>

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.

<details><summary>More Details About Syntax Support</summary>

|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 |√|√|√|

!INCLUDE "syntax.mdpp"

</details>

### (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: liang6516@outlook.com

# 5.Demo

The scripts in demos are in the [examples](examples) folder.

## Demo 01 GPIO

<details><summary>View Code</summary>

``` 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)

```

</details>


## Demo 02 USART

<details><summary>View Code</summary>

``` 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)

```

</details>


## Demo 03 ADC

<details>

<summary>View Code</summary>

``` 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)

```

</details>


## Demo 04 PWM output

<details><summary>View Code</summary>

``` 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)

```

</details>

## Demo 05 RGB

<details><summary>View Code</summary>

``` python

import STM32G0

import PikaPiZero

import PikaStdLib

rgb = PikaPiZero.RGB()

mem = PikaStdLib.MemChecker()

rgb.init()

rgb.enable()

print('hello 2')

print('mem used max:')

mem.max()

while True:

print('flowing')

rgb.flow()

```

</details>

## Demo 06 Snake(Need LCD)

<details>

<summary>View Code</summary>

``` python

from PikaObj import *

import PikaStdLib

import PikaPiZero

import STM32G0

# hardware init

lcd = PikaPiZero.LCD()

lcd.init()

lcd.clear('white')

key = PikaPiZero.KEY()

key.init()

time = STM32G0.Time()

x_max = 120

y_max = 150

# snake init

s = PikaPiZero.Point()

w = 9

h = 9

s.x = 50

s.y = 10

len = 0

while len < 3:

b = s

i = 0

while i < len:

b = b.next

i = i + 1

b.next = PikaPiZero.Point()

b.next.x = b.x - 10

b.next.y = b.y

b.next.prev = b

len = len + 1

# ring link

b.next = s

s.prev = b

i = 0

b = s

while i < len:

lcd.fill(b.x, b.y, w, h, 'blue')

b = b.next

i = i + 1

print('snake lengh')

print(len)

# fruit init

f = PikaPiZero.Point()

f.x = 30

f.y = 20

lcd.fill(f.x, f.y, w, h, 'green')

# memory check

mem = PikaStdLib.MemChecker()

print('mem used max:')

mem.max()

# main loop

d = 0

isUpdate = 1

isEat = 0

while True:

if isUpdate:

# isUpdate = 0

# check eat fruit

if f.x == s.x and f.y == s.y:

# have eat fruit

isEat = 1

f.x = f.x + 30

if f.x > x_max:

f.x = f.x - x_max

f.y = f.y + 30

if f.y > y_max:

f.y = f.y - y_max

lcd.fill(f.x, f.y, w, h, 'green')

# move snake by the direction

if d == 0:

x_new = s.x + 10

y_new = s.y

if x_new > x_max:

x_new = 0

elif d == 1:

x_new = s.x

y_new = s.y - 10

if y_new < 0:

y_new = y_max

elif d == 2:

x_new = s.x

y_new = s.y + 10

if y_new > y_max:

y_new = 0

elif d == 3:

x_new = s.x - 10

y_new = s.y

if x_new < 0:

x_new = x_max

if isEat:

isEat = 0

b_new = PikaPiZero.Point()

b_new.x = x_new

b_new.y = y_new

b_new.prev = s.prev

b_new.next = s

s.prev.next = b_new

s.prev = b_new

s = b_new

len = len + 1

print('snake lengh')

print(len)

print('mem used max:')

mem.max()

# drow the snake and fruit

# clear last body

lcd.fill(s.prev.x, s.prev.y, w, h, 'white')

# new body

s.prev.x = x_new

s.prev.y = y_new

# head is last body

s = s.prev

lcd.fill(s.x, s.y, w, h, 'blue')

b = s

i = 0

# scan key

key_val = key.get()

if key_val == 0:

d = 0

isUpdate = 1

elif key_val == 1:

d = 1

isUpdate = 1

elif key_val == 2:

d = 2

isUpdate = 1

elif key_val == 3:

d = 3

isUpdate = 1

```

</details>


The maximum RAM usage of these demos is only 3.56K, which is 4.56K if the 1K stack is included, and the maximum Flash usage is 30.4K. Refer to the 20K RAM and 64K Flash of STM32F103C8T6, less than 25% RAM and less than 50% Flash are used.

## About the custom extern module ？

In addition to device drivers, developing custom Python modules for MCU is very easy. The following two demos are extensions of the custom module, which developed python interfaces for the ARM-2D image driver library.

## Boxes~


## Rotating suns~


# 6.Test and develop Core

## Test core in docker (recommend)

[get start with docker](https://pikadoc-en.readthedocs.io/en/latest/get-start_linux.html)

# ✨ Contributors

<a href="https://github.com/pikastech/pikapython/graphs/contributors">

<img src="https://contrib.rocks/image?repo=pikastech/pikascript" />

</a>

## [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)

<div class="log"></div>

### Contribute Log On 2023

| Contribute log | Contributer |

| --- | --- |

!INCLUDE "contributor2023.mdpp"

<details><summary> Contribute Log On 2022 </summary>

| Contribute log | Contributer |

| --- | --- |

!INCLUDE "contributor2022.mdpp"

</details>

<details><summary> Contribute Log On 2021 </summary>

| Contribute log | Contributer |

| --- | --- |

!INCLUDE "contributor2021.mdpp"

</details>

## Star History

[](https://star-history.com/#pikastech/pikascript&Date)