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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3043 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2010-10-21 01:07:21 +00:00
parent 7edb022a80
commit e401d57e9e
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53
configs/avr32dev1/README.txt
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@ -6,6 +6,8 @@ This is the README file for the NuttX port to the Atmel AVR32DEV1 board.
Contents
^^^^^^^^
* Pin Configuration
* Serial Connection
* Toolchains
* Development Environment
* GNU Toolchains
@ -14,6 +16,47 @@ Contents
* AVR32DEV1 Configuration Options
* Configurations
Pin Configuration
^^^^^^^^^^^^^^^^^
The only GPIO pin usage is for LEDs (2) and Buttons (2):
PIN 13 PA7 LED1
PIN 14 PA8 LED2
PIN 24 PB2 KEY1
PIN 25 PB3 KEY2
See configs/avr32dev/src/avr32dev_internal.h
Serial Connection
^^^^^^^^^^^^^^^^^
USART1 is the default USART1 used in the configuration files to
provide a serial console (of course, that can be easily changed
by editting the configuration file). The AVR32DEV1 board has no
RS-232 drivers or connectors on board. I use an off-board MAX232
module that I got on eBay (search for MAX232 if you want to find
one). I connect the MAX232 board as follows:
In configs/avr32dev/include/board.h:
#define PINMUX_USART1_RXD PINMUX_USART1_RXD_1
#define PINMUX_USART1_TXD PINMUX_USART1_TXD_1
In arch/avr/src/at91uc3/at91uc3b_pinmux.h:
#define PINMUX_USART1_RXD_1 (GPIO_PERIPH | GPIO_FUNCD | GPIO_PORTA | 17)
#define PINMUX_USART1_TXD_1 (GPIO_PERIPH | GPIO_FUNCA | GPIO_PORTA | 23)
PA17 and PA23 are avaiable from the AVR32DEV1:
GPIO PIN Header 16X2 (J2)
----- ----- ----------------
PA17 PIN37 Pin 5
PA23 PIN47 Pin 15
and, of course, +5V and ground.
Development Environment
^^^^^^^^^^^^^^^^^^^^^^^
@ -69,6 +112,9 @@ IDEs
AVR32 Bootloader
^^^^^^^^^^^^^^^^
Link Address
------------
The linker scripts (ld.script) assume that you are using the bootloader.
The bootloader resides at 0x8000:0000 and so the ld.script files link
the application to execute after the bootloader at 0x8000:2000. To link
@ -80,6 +126,13 @@ AVR32 Bootloader
to:
flash (rxai!w) : ORIGIN = 0x80000000, LENGTH = 256K
Entering the ISP
----------------
In order to use the USB port to download the FLASH(ISP), you need to
use the S3(PA13) to make CPU return to boot status. In this mode, the
on chip bootloader will run, making the ISP possible.
AVR32DEV1 Configuration Options
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^