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| | [[Category:Ongoing_Projects]] | | [[Category:Ongoing_Projects]] |
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| − | [[File:arm_board_r1.jpg|thumb|Revision 1 of the ARM development board]]
| + | [https://github.com/corecode/mchck/wiki Moved to GitHub] |
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| − | The goal is to have a small, cheap, and powerful development board
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| − | that supports USB for easy programming, at low parts costs (current
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| − | estimate < $5). This allows us to use the board for all silly purposes
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| − | where spending >$20 for an Arduino is just too much. The board is like
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| − | the [http://pjrc.com/teensy/index.html Teensy], just with an ARM
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| − | microcontroller instead.
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| − | == Quick links ==
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| − | * [https://gitorious.org/usb-micro-proto/nucproto Project sources]
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| − | * [http://www.nuvoton.com/NuvotonMOSS/Community/ProductInfo.aspx?tp_GUID=5dbf7d7a-b6df-4fe1-91c9-063449500ce7 NUC homepage]
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| − | * [http://download.nuvoton.com/NuvotonMOSS/DownloadService/Member/DocumentsInfo.aspx?tp_GUID=DA00-NUMICRONUC100 Reference Manual]
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| − | * [https://silver.arm.com/download/download.tm?pv=1102513 ARMv6 Architecture Manual] (requires registration)
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| − | == Detailed Description ==
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| − | The board uses a
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| − | [http://www.nuvoton.com/NuvotonMOSS/Community/ProductInfo.aspx?tp_GUID=5dbf7d7a-b6df-4fe1-91c9-063449500ce7 Nuvoton NUC120]
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| − | 48-pin microcontroller which has an ARM Cortex-M0 CPU
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| − | 32-bit CPU core.
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| − | Features:
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| − | * up to 50MHz
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| − | * 32KKB-128KKB program flash, 4KKB-16KKB RAM, 4KKB data flash, 4KKB boot loader flash
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| − | * 2 UART, 1 SPI, 2 I2C, USB, 1 analog comparator, 4 PWM, 8 12-bit ADC channels
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| − | The board contains:
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| − | * USB A connector on board outline
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| − | * optional Mini-USB receptacle
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| − | * USB header connector for direct wire connections (e.g. inside PC)
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| − | * optional voltage regulator for external voltage (up to 13V)
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| − | * optional LiPo battery charger IC for battery operation
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| − | * LiPo charger can be driven from a solar panel
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| − | * SWD debug/programming header
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| − | * reset button
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| − | * 1 LED for binary debug/information display
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| − | == Project roadmap ==
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| − | === Hardware design ===
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| − | In beta state. Version 1 boards have been fabbed and need to be
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| − | tested and assembled
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| − | Errata/changes required for next version:
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| − | * probably a problem with 3.3V circuit operation and battery: PMOS gate only gets pulled up to 3.3V, but likely needs the full battery voltage. Replacing PMOS with SOT-323 footprint might help routing.
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| − | === Toolchain ===
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| − | Proprietary windows software is available, but we'd like to have
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| − | complete support with free software tools.
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| − | ==== What works ====
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| − | * gcc/binutils/gdb support ARM Cortex-M0
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| − | ==== In progress ====
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| − | [http://dangerousprototypes.com/docs/Bus_Blaster Bus Blaster] can speak SWD with KT firmware; use UrJTAG git as root to [http://dangerousprototypes.com/docs/Bus_Blaster_v2_manufacturing_resources flash] (interface=1). TODO: test SWD connection to target.
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| − | ==== What needs work ====
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| − | * Programming/Debugging: [http://openocd.berlios.de/web/ OpenOCD] supposedly supports SWD. Needs to be confirmed what works.
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| − | * Need bootloader and programming software. Proprietary from Nuvoton available
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| − | * Tool library?
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| − | === Programming envionment ===
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| − | * [http://leaflabs.com/docs/ide.html Maple IDE] by LeafLabs is a port of the Arduino IDE for ARM
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| − | * [http://leaflabs.com/docs/unix-toolchain.html LeafLabs command-line toolchain] might apply in parts, or at least inspire
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| − | * [https://github.com/esden/summon-arm-toolchain summon arm toolchain] builds an ARM toolchain
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| − | == Umbrellas ==
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| − | Eric says: Expansion boards will be called umbrellas.
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| − | possible umbrellas:
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| − | * sdcard umbrella
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| − | * rf umbrella ([http://en.wikipedia.org/wiki/6LoWPAN 6LoWPAN]/[http://en.wikipedia.org/wiki/IEEE_802.15.4 802.15.4]?)
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| − | * stepper motor umbrella
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| − | * lcd umbrella
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| − | * microphone umbrella
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| − | * speaker umbrella (with small amp)
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| − | * power umbrella (bigger voltage regulator)
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| − | == Example projects ==
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| − | * OTP generator (yubikey-like)
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| − | * Your idea here
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| − | == People involved ==
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| − | [mailto:2@0x2c.org Simon], Eric
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