38e7b842c6
This is a best-effort implementation of write polling. It's difficult to do correctly because if there are multiple output streams (eg UART and USB CDC) then some may not be writeable while others are. A full solution should also have a return value from mp_hal_stdout_tx_strn(), returning the number of bytes written to the stream(s). That's also hard to define. The renesas-ra and stm32 ports already implement a similar best-effort mechanism for write polling. Fixes issue #11026. Signed-off-by: Damien George <damien@micropython.org> |
||
|---|---|---|
| .. | ||
| core | ||
| memzip_files | ||
| add-memzip.sh | ||
| hal_ftm.c | ||
| hal_ftm.h | ||
| hal_gpio.c | ||
| help.c | ||
| lcd.c | ||
| led.c | ||
| led.h | ||
| lexerfrozen.c | ||
| lexermemzip.h | ||
| main.c | ||
| make-pins.py | ||
| Makefile | ||
| manifest.py | ||
| mk20dx256_af.csv | ||
| mk20dx256_prefix.c | ||
| mk20dx256.ld | ||
| modpyb.c | ||
| mpconfigport.h | ||
| pin_defs_teensy.c | ||
| pin_defs_teensy.h | ||
| qstrdefsport.h | ||
| README.md | ||
| reg.c | ||
| reg.h | ||
| servo.c | ||
| servo.h | ||
| std.h | ||
| teensy_hal.c | ||
| teensy_hal.h | ||
| teensy_pins.csv | ||
| timer.c | ||
| timer.h | ||
| uart.c | ||
| uart.h | ||
| usb.c | ||
| usb.h | ||
Build Instructions for Teensy 3.1
Currently the Teensy 3.1 port of MicroPython builds under Linux and not under Windows.
The tool chain required for the build can be found at https://launchpad.net/gcc-arm-embedded.
Download 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 environment 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.
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
sudo ARDUINO=~/arduino-1.0.5/ make deploy
Currently, the Python prompt is through the USB serial interface, i.e.
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:
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:
$(info Executing GNUmakefile)
ARDUINO=${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.
Tips for OSX
Set the ARDUINO environment variable to the location where Arduino with TeensyDuino is installed.
export ARDUINO=~/Downloads/Arduino.app/Contents/Java/
Search /dev/ for USB port name, which will be cu.usbmodem followed by a few numbers. The name of the port maybe different depending on the version of OSX. To access the Python prompt type:
screen <devicename> 115200