mirror of
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85 lines
2.1 KiB
Plaintext
85 lines
2.1 KiB
Plaintext
Requires a very recent toolchain, because ATmega32U2 is relatively new.
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- Building:
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make
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- Uploading the firmware to a Ben (for flashing with the atusb-pgm cable):
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make HOST=<hostname> upload
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Example:
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make HOST=ben upload
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HOST defaults to "jlime".
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- Flashing the boot loader:
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Prerequisite: avrdude on the Ben.
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Disconnect the atusb board from USB. Insert the atusb-pgm connector into
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the Ben. Place the atusb-pgm adapter on the exposed contact pads of the
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atusb board and push it down. Then run
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make prog
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This takes about 30 seconds. If the programming fails with an error
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message like "Yikes! Invalid device signature.", verify that the
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atusb-pgm board is properly connected and placed, then try again.
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- Uploading the application:
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Prerequisite: dfu-util installed on the PC.
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Insert atusb into the PC, then run
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make dfu
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Note: since the boot loader resets the USB bus after timing out,
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this operation can fail with a message like "No DFU capable USB device
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found". Just retry, and it will eventually get through.
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--------------------------
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Making the toolchain:
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# patches according to
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# http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=789527
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# some gcc prerequisites
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apt-get remove avr-libc gcc-avr binutils-avr
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apt-get install libmpfr-dev libmpc-dev
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# binutils
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wget http://ftp.gnu.org/gnu/binutils/binutils-2.21.tar.bz2
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tar xfj binutils-2.21.tar.bz2
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cd binutils-2.21
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./configure --target=avr --disable-nls
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make
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make install
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# gcc
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wget http://ftpmirror.gnu.org/gcc/gcc-4.5.2/gcc-4.5.2.tar.bz2
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wget -O gcc_452_avr.patch http://gcc.gnu.org/bugzilla/attachment.cgi?id=23050
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tar xfj gcc-4.5.2.tar.bz2
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cd gcc-4.5.2
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patch -p1 -s <../gcc_452_avr.patch
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mkdir obj-avr
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cd obj-avr
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../configure --target=avr --enable-languages=c \
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--disable-nls --disable-libssp --with-dwarf2
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make
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make install
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wget http://download.savannah.gnu.org/releases/avr-libc/avr-libc-1.7.1.tar.bz2
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tar xfj avr-libc-1.7.1.tar.bz2
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cd avr-libc-1.7.1
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./bootstrap # the automake at the end takes a while
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./configure --build=`./config.guess` --host=avr
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make
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make install
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