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Update teensy README.md file

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Thanks to Artur Wroblewski for some suggested changes.
I also added the TIPs section at the end while I was updating.
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Dave Hylands 2014-08-30 12:14:47 -07:00
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# Build Instructions for Teensy 3.1
Currently the Teensy 3.1 port of Micro Python builds under Linux and not under Windows.
The tool chain required for the build can be found at <https://launchpad.net/gcc-arm-embedded>.
Downlaod the current Linux *.tar.bz2 file. Instructions regarding unpacking the file and moving it to the correct location
as well as adding the extracted folders to the enviroment variable can be found at
<http://eliaselectronics.com/stm32f4-tutorials/setting-up-the-stm32f4-arm-development-toolchain/>
## Previous Instructions Shown Below (no longer valid)
This assumes that you have TeensyDuino installed and set the ARDUINO environment
variable pointing to the where Arduino with TeensyDuino is installed.
```
cd teensy
ARDUINO=~/arduino-1.0.5 make
```
To upload micropython to the Teensy 3.1.
Press the Program button on the Teensy 3.1
```
make upload
```
Currently, the python prompt is through the USB serial interface.
# Build Instructions for Teensy 3.1
Currently the Teensy 3.1 port of Micro Python builds under Linux and not under Windows.
The tool chain required for the build can be found at <https://launchpad.net/gcc-arm-embedded>.
Downlaod the current Linux *.tar.bz2 file. Instructions regarding unpacking the file and moving it to the correct location
as well as adding the extracted folders to the enviroment variable can be found at
<http://eliaselectronics.com/stm32f4-tutorials/setting-up-the-stm32f4-arm-development-toolchain/>
In order to download the firmware image to the teensy, you'll need to use the
downloader included with TeensyDuino. The following assumes that you have
TeensyDuino installed and set the ARDUINO environment variable pointing to the
where Arduino with TeensyDuino is installed.
```bash
cd teensy
ARDUINO=~/arduino-1.0.5 make
```
To upload micropython to the Teensy 3.1.
Press the Program button on the Teensy 3.1
```bash
sudo ARDUINO=~/arduino-1.0.5/ make deploy
```
Currently, the Python prompt is through the USB serial interface, i.e.
```bash
minicom -D /dev/ttyACM0
```
## TIPS
### Install 49-teensy.rules into /etc/udev/rules.d
If you install the 49-teensy.rules file from http://www.pjrc.com/teensy/49-teensy.rules
into your ```/etc/udev/rules.d``` folder then you won't need to use sudo:
```bash
sudo cp ~/Downloads/49-teensy.rules /etc/udev/rules.d
sudo udevadm control --reload-rules
```
Unplug and replug the teensy board, and then you can use: ```ARDUINO=~/arduino-1.0.5/ make deploy```
### Create a GNUmakefile to hold your ARDUINO setting.
Create a file call GNUmakefile (note the lowercase m) in the teensy folder
with the following contents:
```make
$(info Executing GNUmakefile)
ARDUINO=${HOME}/arduino-1.0.5
$(info ARDUINO=${ARDUINO})
include Makefile
```
GNUmakefile is not checked into the source code control system, so it will
retain your settings when updating your source tree. You can also add
additional Makefile customizations this way.