1# MCUZone AT32UC3B0256 mini development board
2
3## Introduction
4
5**The AVR32 is a high performance, low power 32-bit Atmel AVR
6microcontroller.** This board support package supports the MCUZone
7AVR32 mini development board (also known as the AVR32DEV1). The
8development board uses the AT32UC3B0256 microcontroller.
9
10![board-snap](figures/board-snap.png)
11
12Note: Unfortunately, the online link for the development board (both
13MCUZone OR Aliexpress) doesn't work. I don't have access to the
14schematic (OR Gerber information) for this development kit. I used a
15multimeter to look for the connected pins. If you - the reader - do
16have access to the schematic/pinouts, could you please reach out to
17me?
18
19This README is essentially a work-in-progress. I will try to map the
20berg rows (J1 and J2) and document them as and when I further the
21device driver base for the target.
22
23If you feel like reaching out to me for questions pertaining to the
24target development board, you can write to me: ramangopalan AT gmail
25dot com.
26
27## Supported compiler
28
29This BSP is built with the AVR32 GCC that comes with the Microchip
30Studio. I am using the Microchip Studio version 7.0.2594. Make sure
31that avr32-gcc.exe is visible on your command line. Add the binary
32directory to you PATH. Yes, on Windows. Sorry :(
33
34![env-windows-avr32-gcc](figures/env-windows-avr32-gcc.png)
35
36I use Git Bash (Windows) for compiling the RT-Thread system. Once you
37set your path correctly, invoke Git Bash to query avr32-gcc.exe's
38version. The output should look similar to this:
39
40```bash
41$ avr32-gcc.exe --version
42avr32-gcc.exe (AVR_32_bit_GNU_Toolchain_3.4.2_435) 4.4.7
43Copyright (C) 2010 Free Software Foundation, Inc.
44This is free software; see the source for copying conditions.  There is NO
45warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
46```
47
48If you see this, you're all set to compile RT-Thread for AT32UC3B0256.
49
50## Program firmware
51
52### Step 1: download the RT-Thread codebase and navigate to bsp/avr32uc3b0.
53
54```bash
55$ cd bsp/avr32uc3b0/
56```
57
58### Step 2: build
59
60```bash
61scons -c
62scons
63```
64
65### Step 3: flash
66
67If everything went well, scons should have generated an elf file:
68rtthread-uc3b0256.elf. Let us program the file. The program 'atprogram'
69comes with Microchip Studio. I didn't have to do much here. Just make sure
70'atprogram.exe' is in your PATH.
71
72```bash
73atprogram -t atmelice -i jtag -d at32uc3b0256 program -f rtthread-uc3b0256.elf
74```
75
76Note that you should already see the on-board LEDs (PA7, PA8) blink if your
77programming was successful. I use the Atmel ICE programmer. To access
78msh, you'll need an FTDI breakout board. Connect the target board to
79the FTDI breakout with jumper wires:
80
81- GND (FTDI) to GND (development board)
82- RX (FTDI) to J2, pin 10.
83- TX (FTDI) to J2, pin 7.
84
85## Running Result
86
87The output information on serial port for `ps' the command should look like this:
88
89```bash
900x000003c0 tidle0    31  ready   0x00000054 0x00000100    67%   0x00000009 OK
910x00001650 tshell    20  running 0x000000b4 0x00001000    13%   0x0000000a OK
920x00000ac4 led2       5  suspend 0x0000007c 0x00000400    12%   0x0000000a EINTRPT
930x00001350 led1       5  suspend 0x0000007c 0x00000400    12%   0x00000005 EINTRPT
94```
95
96## Peripheral Support
97
98| Drive | Support | Remark  |
99| ----- | ------- | ------- |
100| UART  | Support | UART0/1 |
101| GPIO  | -       | -       |
102| I2C   | -       | -       |
103| RTC   | -       | -       |
104| SPI   | -       | -       |
105| TIMER | -       | -       |
106| WDT   | -       | -       |
107
108