Banana PI BPI-Pico W-S3 User Guide

   Overview

• The Banana Pi BPI-PicoW-S3 is a series of low-powered microcontrollers designed for IoT development. same size as Raspberry Pi Pico board,It supports 2.4 GHz Wi-Fi and Bluetooth® LE dual-mode wireless communication, the peripheral is compatible with low-power hardware design, and the power consumption is only 10uA in deep sleep mode.In terms of programming, the PicoW-S3 supports ESP-IDF, Arduino, micropython and other methods.

   Features

• ESP32-S3, Xtensa® 32 bit LX7
• External PSRAM, FLASH
  
• Ultra-low power 10uA
• 2.4G WIFI, Bluetooth 5, Bluetooth mesh
• GPIO, ADC, TOUCH, PWM, I2C, SPI, RMT, I2S, UART, LCD, CAMERA, USB, JTAG
  
• 1 * microUSB
  
• 1 * Full color LED

   BPI-PicoW-S3 VS Raspberry Pi PicoW, BPI-Leaf-S3, ESP32-S3-DevKitC-1

    Espressif ESP32-S3

What follows is a description of the most important features of ESP32-S3.

• Wi-Fi + Bluetooth 5 (LE) Wireless Connectivity: ESP32-S3 supports a 2.4 GHz Wi-Fi (802.11 b/g/n) with 40 MHz of bandwidth support. The Bluetooth Low Energy subsystem supports long range through Coded PHY and advertisement extension. It also supports higher transmission speed and data throughput, with 2 Mbps PHY. Both Wi-Fi and BLE have superior RF performance that is maintained even at high temperatures.
  
• AI Acceleration Support: ESP32-S3 has additional support for vector instructions in the MCU, which provides acceleration for neural network computing and signal processing workloads. The software libraries for the above-mentioned optimized functions will become available very soon, in the form of updates to ESP-DSP and ESP-NN.
• Rich IO interfaces: ESP32-S3 has 45 programmable GPIOs and common peripheral interfaces such as SPI, I2S, I2C, PWM, RMT, ADC, UART, SD/MMC host controller and TWAITM controller. Fourteen of the GPIOs can be configured as capacitive touch inputs for HMI interaction. In addition, ESP32-S3 is equipped with an ultra-low power coprocessor (ULP) and supports multiple low-power modes, making it widely applicable to various low-power application scenarios.
• Security mechanism: ESP32-S3 provides comprehensive security mechanism and protection measures for iot devices to prevent all kinds of malicious attacks and threats. It supports Flash encryption based on AES-XTS algorithm, secure startup based on RSA algorithm, digital signature and HMAC. Esp32-s3 also includes a new "World Controller" module, which provides two non-interfering execution environments to implement a trusted execution environment or permission separation mechanism.

   Hardware interface

   Hardware spec

   Features

The pin spacing is compatible with universal boards (hole boards, dot matrix boards) and breadboards, which is convenient for debugging applications.

   GPIO define

   Software

CircuitPython

CircuitPython is a programming language designed to simplify experimenting and learning to code on low-cost microcontroller boards.

• Mu Editor Download Page

• Getting Started: Code CircuitPython with Mu Editor

Reference Resources :

• Adafruit: Welcome To CircuitPython

• Adafruit:CircuitPython Web Workflow Code Editor Quick Start

• Adafruit:CircuitPython Docs

• GitHub:CircuitPython-tricks
• BPI-Pico-S3 Getting Started, Code CircuitPython with Mu Editor

   ESP-IDF

ESP-IDF is an IoT development framework officially launched by Espressif, supporting Windows, Linux and macOS operating systems.

It is recommended that developers install ESP-IDF via an integrated development environment (IDE):

• GitHub: ESP-IDF Eclipse Plugin Installation and Usage Guide
• ESP-IDF VSCode plugin 
• /master/docs/tutorial/toc.md GitHub: Installation and Usage Guide 
• bilibili: ESP-IDF VSCode Plugin Quick Operation Guide

Or select the corresponding manual installation process according to the operating system:

• Standard setup for Windows platform toolchain
• Standard setup for Linux and macOS platform toolchains

API:

• API Reference
• API Guide

In order to enable your BPI-Leaf-S3 development board to flash FLASH through USB-CDC, you need to set the development board to firmware download mode.

There are two methods of operation:

1. Connect to the computer via USB, press and hold the BOOT button, then press the RESET button and release it, and finally release the BOOT button.

2. Press and hold the BOOT button when the power supply is disconnected, then connect to the computer via USB, and finally release the BOOT button.

You need to confirm the interface in the device manager. The serial number of the interface in the firmware download mode and the normal mode may be different.

   MicroPython

MicroPython implements most of the features and syntax of Python 3, which is easy to learn and use, and can be downloaded directly into the chip to run the verification program without compiling.

Regardless of whether you have a programming foundation or not, MicroPython is far less difficult to get started with than other programming languages. Its code is easy to read, and the open source community has accumulated rich resources over the years. Just like Python, it has strong vitality and application value.

   Arduino

Arduino is an open source embedded software and hardware development platform for users to create interactive embedded projects.

• Arduino IDE download address  
• Install and configure
• Arduino-ESP32 operating environment
• GitHub: BPI-Leaf-S3 Arduino Quick Start
• Arduino-ESP32 APIs

   Resources

BPI-PicoW-S3 schematic : https://github.com/BPI-STEAM/BPI-PicoW-Doc/blob/main/sch/BPI-PicoW-V0.4.pdf

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