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+# Synopsys DesignWare ARC EM Starter Kit
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+
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+## Overview
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+
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+The DesignWare™ ARC™ EM Starter Kit(EMSK, emsk) is a low-cost, versatile
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+solution enabling rapid software development and software debugging, and
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+profiling for the ARC EM Family of processors. The EM Family includes the EM4,
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+EM6, EM5D, EM7D, EM9D, and EM11D cores.
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+
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+
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+
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+The EMSK consists of a hardware platform and a software package, including
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+pre-installed FPGA images of different configurations of the ARC EM Processor
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+with peripherals.
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+
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+The development board is based on a Xilinx Spartan-6 LX45 FPGA. It supports
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+hardware extensions using six 2x6 connectors supporting a total of 48 user I/O
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+pins (plus power and ground pins) that can be used to connect components such
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+as sensors, actuators, memories, displays, buttons, switches, and
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+communication devices. A Digilent Pmod™ compatible extension board containing
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+a four-channel 12-bit A/D converter with an IIC interface and an AC power
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+adapter are included in the package.
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+
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+## Board Resources
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+
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+| Hardware | Description |
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+| -- | -- |
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+| SOC | EMSK |
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+| Core | EM9D |
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+| Arch | 32-bit ARC EM |
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+| Frequency | 20/25 Mhz |
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+| RAM | 128 MB DDR RAM + 256 KB Instruction CCM + 256 KB Data CCM |
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+|Flash | 16 MB SPI Flash for FPGA configuration with 128 KB reserved for application |
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+
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+## Usage
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+
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+### FPGA Configuration
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+
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+Current, only em9d configuration is supported and tested for RT-Thread. However,
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+it's can be easily applied to other configurations because all emsk configurations almost share the same memory map and periphreals.
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+
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+Please refer [EMSK configuration](https://embarc.org/embarc_osp/doc/build/html/board/emsk.html) for details.
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+
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+### Toolchain
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+
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+The ARC GNU Toolchain offers all of the benefits of open source tools, including complete source code and a large install base. The ARC GNU IDE Installer consists of Eclipse IDE with [ARC GNU plugin for Eclipse](https://github.com/foss-for-synopsys-dwc-arc-processors/arc_gnu_eclipse/releases), [ARC GNU prebuilt toolchain](https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases) and [OpenOCD for ARC](https://github.com/foss-for-synopsys-dwc-arc-processors/openocd>)
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+
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+Here, the ARC GNU toolchain is installed to `c:\arc\gnu`. If not, please change the path configuration in rtconfig.py.
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+
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+### Compile
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+
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+please run the following cmds to compile
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+
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+ cd <rt-thread-root>/bsp/synopsys/emsk_em9d
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+ scons
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+
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+## Debug
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+
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+You need to install [Zadig](http://zadig.akeo.ie) to replace the default FTDI driver with WinUSB driver. See [How to Use OpenOCD on Windows](https://github.com/foss-for-synopsys-dwc-arc-processors/arc_gnu_eclipse/wiki/How-to-Use-OpenOCD-on-Windows>) for more information.
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+
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+After compile, please use the following cmds to debug
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+
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+ scons --gdb
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+
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+
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+## Supported Drivers
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+
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+| Driver | Supported | Comment |
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+| ------ | ---- | :------: |
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+| UART1 | yes | USB-UART for shell & log |
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+| UART0 | yes | PMOD A UART for UART modules, e.g. esp8266 |
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+
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+## Maintainer
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+- [vonhust](https://github.com/vonhust)
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+
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+## Notes
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+
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Wayne Ren
