AT90CAN

AT90CAN copied to clipboard

AT90CAN Support for Arduino Maintainer: Sam C. Lin [email protected]

This is a continuation of SuperCow's work on adapting Arduino to work with AT90CANxx MCU's at http://arduino.cc/forum/index.php/topic,8446.0.html

Compile Arduino sketches on Atmel AT90CANxx MCU's. Supports USBtinyISP and JTAG ICE mk1

For Arduino <= 0023: copy the 0023/at90can folder to /hardware/at90can For Arduino >= 1.0: copy the 1.0/at90can folder to /hardware/at90can

From the Arduino IDE's Tools->Board menu, select either

[usbtinyisp]AT90CAN128

or

[JTAG ICE mk1]AT90CAN128

Set your fuses with avrdude: avrdude -c usbtiny -p at90can128 -U lfuse:w:0xFF:m avrdude -c usbtiny -p at90can128 -U hfuse:w:0x19:m avrdude -c usbtiny -p at90can128 -U efuse:w:0xFF:m

To install bootloader for programming over serial, you must set in hfuse BOOTSZ=10 and BOOTRST=0. Use the following fuse settings: avrdude -c usbtiny -p at90can128 -U lfuse:w:0xFF:m avrdude -c usbtiny -p at90can128 -U hfuse:w:0x1C:m avrdude -c usbtiny -p at90can128 -U efuse:w:0xFF:m You will also need to set up the automatic reset circuit to use DTR to toggle the RESET pin: DTR---|100nF|--<RESET>--|1n4148>|--VCC Select [bootloader]AT90CAN128 board type in Arduino IDE and burn the bootloader. Thereafter, you can burn sketches without a hardware programmer via USART0 (RXD0/TXD0) by selecting board type [bootloader]AT90CAN128.

For Arduino pin mappings, see AT90CAN_Pinmap.txt

For more information, see http://blog.lincomatic.com/?tag=can-bus

ChangeLog 20130421 SCL

• restore missing usbtinyisp to 1.0 boards.txt

20130104 SCL

• get bootloader working. Thanks to a4x4kiwi for help
• changed lock bits when locked from CF to 0F because even though AT90CAN128 datasheet shows top 2 bits fixed = 1, avrdude always reads back 0's.