Maple Mini Bootloader 2.0

Hardware

Platform ST STM32: The STM32 family of 32-bit Flash MCUs based on the ARM Cortex-M processor is designed to offer new degrees of freedom to MCU users. It offers a 32-bit product range that combines very high performance, real-time capabilities, digital signal processing, and low-power, low-voltage operation, while maintaining full integration and ease of development.

Microcontroller

STM32F103CBT6

Frequency

72MHz

Flash

120KB

RAM

20KB

Vendor

LeafLabs

Configuration

Please use maple_mini_b20 ID for board option in “platformio.ini” (Project Configuration File):

[env:maple_mini_b20]
platform = ststm32
board = maple_mini_b20

You can override default Maple Mini Bootloader 2.0 settings per build environment using board_*** option, where *** is a JSON object path from board manifest maple_mini_b20.json. For example, board_build.mcu, board_build.f_cpu, etc.

[env:maple_mini_b20]
platform = ststm32
board = maple_mini_b20

; change microcontroller
board_build.mcu = stm32f103cbt6

; change MCU frequency
board_build.f_cpu = 72000000L

Uploading

Maple Mini Bootloader 2.0 supports the following uploading protocols:

  • blackmagic

  • cmsis-dap

  • dfu

  • jlink

  • stlink

Default protocol is dfu

You can change upload protocol using upload_protocol option:

[env:maple_mini_b20]
platform = ststm32
board = maple_mini_b20

upload_protocol = dfu

Debugging

Debugging - “1-click” solution for debugging with a zero configuration.

Warning

You will need to install debug tool drivers depending on your system. Please click on compatible debug tool below for the further instructions and configuration information.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

Maple Mini Bootloader 2.0 does not have on-board debug probe and IS NOT READY for debugging. You will need to use/buy one of external probe listed below.

Compatible Tools

On-board

Default

Black Magic Probe

Yes

CMSIS-DAP

J-LINK

ST-LINK

Frameworks

Name

Description

Arduino

Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences.

CMSIS

Vendor-independent hardware abstraction layer for the Cortex-M processor series

libopencm3

Open source ARM Cortex-M microcontroller library

STM32Cube

STM32Cube embedded software libraries, including: The HAL hardware abstraction layer, enabling portability between different STM32 devices via standardized API calls; The Low-Layer (LL) APIs, a light-weight, optimized, expert oriented set of APIs designed for both performance and runtime efficiency