pine64 / bl_iot_sdk

BL602 SDK (Pine64 version)

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This repository contains the Pine64 fork of Bouffalo Lab's SDK for their BL602 Wi-Fi/BLE Combo RISC-V SoC. Documentation, including upstream documentation, translations, mirrored technical documentation, and original reverse engineered documentation is at bl602-docs, which is cloned as a submodule of this repository at docs. Use git submodule update --init to initialize the submodule.

This repository is the central focus of Pine64's Nutcracker Challenge. The main task is to reverse engineer the following files:

• components/bl602/bl602_wifi/lib/libbl602_wifi.a
• components/network/ble/blecontroller/lib/libblecontroller.a
• components/stage/atcmd/lib/libatcmd.a

This is being done at bl602-re.

Documentation

You can find a lot of documentation on PINE64 Documentation Website and PINE64 Documentation Repository, where you can find Datasheets, Reference Manuals and various other documentation materials.

Quick Start

In order to build sample apps, you need to set a few environment variables:

export BL60X_SDK_PATH=/path/to/this/repo
export CONFIG_CHIP_NAME=BL602

In order to build all sample apps simply call make, for example:

make

To only build the sample app of interest, go to the directory of the app, then call make, for example:

cd customer_app/bl602_boot2
make

Call

make CONFIG_TOOLPREFIX=riscv64-linux-gnu-

if you wish to bypass the bundled cross-compiler and using your distribution's own cross-compiler.

There is a linker script (written in python) at image_conf/flash_build.py. To run this, you need to specify the application and the target, for example:

python3 flash_build.py bl602_boot2 bl602

Note: If you decide to copy any project outside of the customer_app folder, you will need to define a few variables in order to compile it:

export BL60X_SDK_PATH=/path/to/this/repo
export CONFIG_CHIP_NAME=bl602

Docker

To set up a development environment in Docker, and do a full build of all the example projects, using the bundled toolchain:

docker build -t bl602sdk -f Dockerfile.bundled
docker run -t -i --rm bl602sdk
# make

Hardware

BL602 is a 32-bit RISC-V based combo chipset supporting Wi-Fi and BLE (Bluetooth Low Energy). The chip is made by Nanjing-based Bouffalo Lab for ultra-low-power applications. In terms of price range and feature set, the chip is competing against Espressif ESP8266. The RISC-V core is based on SiFive E24.

At the moment there are mainly three development boards:

• PineCone: USB-C evaluation board by Pine64 (datasheet here), RGB LED, CH340N USB-to-UART chip
• Doi.am DT-BL10: micro USB
• Official BL EVB (Sipeed early adopter program): mini USB, FTDI chip?

Comparison with ESP8266