Difference between revisions of "ARM Board"

Revision as of 21:40, 25 September 2011

Overview

The goal is to have a small, cheap, and powerful development board that supports USB for easy programming, at low parts costs (current estimate < $5). This allows us to use the board for all silly purposes where spending >$20 for an Arduino is just too much. The board is like the Teensy, just with an ARM microcontroller instead.

Quick links

• Project sources
• NUC homepage
• Reference Manual
• ARMv6 Architecture Manual

Detailed Description

The board uses a Nuvoton NUC120 48-pin microcontroller which has an ARM Cortex-M0 CPU 32-bit CPU core. Features:

• up to 50MHz
• 32KKB-128KKB program flash, 4KKB-16KKB RAM, 4KKB data flash, 4KKB boot loader flash
• 2 UART, 1 SPI, 2 I2C, USB, 1 analog comparator, 4 PWM, 8 12-bit ADC channels

The board contains:

• USB A connector on board outline
• optional Mini-USB receptacle
• USB header connector for direct wire connections (e.g. inside PC)
• optional voltage regulator for external voltage (up to 13V)
• optional LiPo battery charger IC for battery operation
• LiPo charger can be driven from a solar panel
• SWD debug/programming header
• reset button
• 1 LED for binary debug/information display

Project roadmap

Hardware design

In beta state. Version 1 boards have been fabbed and need to be tested and assembled

Toolchain

Proprietary windows software is available, but we'd like to have complete support with free software tools.

What works

• gcc/binutils/gdb support ARM Cortex-M0

What needs work

• Programming/Debugging: OpenOCD

supposedly supports SWD. Needs to be confirmed what works.

• Need bootloader and programming software. Proprietary from Nuvoton available
• Tool library?

Programming envionment

• Maple IDE by LeafLabs is a port of the Arduino IDE for ARM
• LeafLabs command-line toolchain might apply in parts, or at least inspire
• summon arm toolchain builds an ARM toolchain

Example projects

• Your idea here