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171 lines
5.5 KiB
171 lines
5.5 KiB
# SimpleMachines' Mizar32 Development Board
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## Introduction
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The Mizar32 is a 32-bit computer based on the AVR32 processor. It is
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clocked at 66MHz and has 32MB of main memory. It supports mass storage
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on SD card, a USB connector, an on-board LED, two buttons, a JTAG port
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and six bus connectors.
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The bus connectors let you add other stackable hardware modules such
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as serial ports, ethernet, a 16x2 character LCD display and a
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VGA/keyboard/mouse/audio board based on the 8-core Parallax Propeller
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processor.
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The Mizar32 is designed by SimpleMachines, Italy.
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This board support package aims at adding RT-Thread support for the
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following Mizar32 development boards.
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| Model | Flash | SRAM | SDRAM |
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| --------- | ----- | ---- | ---- |
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| Mizar32-A | 512KB | 64KB | 32MB |
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| Mizar32-B | 256KB | 64KB | 32MB |
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| Mizar32-C | 128KB | 64KB | 32MB |
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## Specification
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- Main processor: AVR32 UC3A0 @ 66 MHz
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- Internal fast SRAM: 32KB or 64KB with single-cycle access time
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- On-board SDRAM: 32MB with 2-cycle access time
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- Internal Flash memory: 128/256/512KB with single-cycle access time
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- External Flash memory: up to 4GB on micro SD card.
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- Internal operating Voltage: 3.3V with 5V input tolerant I/O
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- Digital I/O Pins: 66
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- Timer/Counter: 3 channel, 16-bit.
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- Analog-to-Digital input pins: 8 with 10-bit resolution measuring 0-3.3v at up to 384,000 samples per second
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- Stereo audio bitstream Digital-to-Analog Converter with 16 bit resolution at up to 48kHz
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- Pulse Width Modulation channels (PWM): 7
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- Universal Sync/Async RX/TX (USART): 2
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- Serial Periperal Interface (SPI): 2
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- Two-Wire Interface (TWI): 1, I2C-compatible at up to 400kbit/s
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- Universal Serial Bus (USB): 1 OTG host with dedicated cable.
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- Debug Port: JTAG connector
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- Ethernet MAC 10/100: 1 (requires add-on hardware module)
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- Oscillators: 2 (12MHz and 32768Hz)
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- Buttons: Reset button, user button
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- LEDs: Power LED, User LED
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- Power supply: 5V USB or 7.5V-35V DC, 80mA (base board) to 222mA (with all add-on modules)
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- Dimensions: 96,5mm x 63,5mm
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- Weight: 42.5 grams
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- Temperature range: -45 to +85°C
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## Embedded Hardware Interfaces
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- MicroSD
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- USB
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- JTAG
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- Add-on bus connectors 1-6 interfaces on the Add-on Bus
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- 12 General Purpose I/O pins
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- 2 UARTs: one basic, one with modem control signals
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- 2 SPI
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- I2C interface with 2-way splitter
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- 8 ADC inputs
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- 3 high-resolution timers
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- Ethernet
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## Optional Stacked Modules
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This README is essentially a work-in-progress. I will try to further
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and documentation as and when I further the device driver base for the
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Mizar32 target.
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If you feel like reaching out to me for questions pertaining to the
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target development board, you can write to me: ramangopalan AT gmail
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dot com.
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## Supported compiler
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This BSP is built with the AVR32 GCC that comes with the Microchip
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Studio. I am using the Microchip Studio version 7.0.2594. Make sure
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that avr32-gcc.exe is visible on your command line. Add the binary
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directory to you PATH.
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I use Git Bash (Windows) for compiling the RT-Thread system. Once you
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set your path correctly, invoke Git Bash to query avr32-gcc.exe's
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version. The output should look similar to this:
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```bash
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$ avr32-gcc.exe --version
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avr32-gcc.exe (AVR_32_bit_GNU_Toolchain_3.4.2_435) 4.4.7
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Copyright (C) 2010 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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```
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If you see this, you're all set to compile RT-Thread for Mizar32.
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## Program firmware
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### Step 1: download the RT-Thread codebase and navigate to bsp/avr32uc3a0.
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```bash
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$ cd bsp/avr32uc3a0/
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```
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### Step 2: build
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```bash
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scons -c
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scons
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```
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### Step 3: flash
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If everything went well, scons should have generated an elf file:
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rtthread-uc3a0256.elf. Let us program the file. The program 'atprogram'
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comes with Microchip Studio. I didn't have to do much here. Just make sure
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`atprogram.exe' is in your PATH.
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```bash
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atprogram -t atmelice -i jtag -d at32uc3a0256 program -f rtthread-uc3a0256.elf
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```
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Note that you should already see the on-board LED (PB29) blink if your
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programming was successful. I use the Atmel ICE programmer. To access
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msh with the default menuconfig's configuration, you'll need the VGA
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shield. Connect the target board to a 12 VDC wall adapter. Also
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connect the shield to a VGA monitor and a PS/2 keyboard.
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## Running Result
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The output information on serial port for `ps' the command should look like this:
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```bash
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0x000003c0 tidle0 31 ready 0x00000054 0x00000100 67% 0x00000009 OK
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0x00001650 tshell 20 running 0x000000b4 0x00001000 13% 0x0000000a OK
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0x00001350 led1 5 suspend 0x0000007c 0x00000400 12% 0x00000005 EINTRPT
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```
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Here is a picture of the RT-Thread session on the VGA monitor:
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## Peripheral Support
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| Drive | Support | Remark |
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| ----- | ------- | ------- |
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| UART | Support | UART0/1 |
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| GPIO | Support | - |
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| I2C | - | - |
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| RTC | - | - |
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| SPI | - | - |
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| TIMER | - | - |
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| WDT | - | - |
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