bleterm -- BLE terminal program for Nordic Semiconductor devices
npm install bleterm
The tested configuration is an Adafruit Bluefruit LE UART Friend connected the hardware UART interface of an Adafruit Pro Trinket 3V. However, bleterm should work with all Nordic Semiconductor devices with BLE UART service.
The switch on the BLE UART should be in the UART position, not CMD.
The Arduino sketch, arduino/cli.ino, must be uploaded to the Pro Trinket. This is a demo of a small command line interface over the hardware serial interface. The only command implemented in cli.ino is "blink [0|1|t|f]" which turns the LED connected to digital pin 13 on and off. This can be used as a template for implementing commands for complex devices. For example, if Neopixels are connected to the Pro Trinket, implement commands to switch between effects such as rainbow, colorWipe, and theaterChase.
How to use
bleterm is a command line application so run it, wait for it to connect to a BLE UART device, then start typing. Press Ctrl-D to exit.
- "blink 1" turns on the LED connected to digital pin 13
- "blink 0" turns off the LED connected to digital pin 13
- "blink t" is a synonym for "blink 1"
- "blink f" is a synonym for "blink 0"
The following is a sample session showing how to turn the Pro Trinket LED on and off.
pi@raspi ~/bleterm $ node bleterm.js Connected to Adafruit Bluefruit LE blink 1 blink 0 <CTRL-D> pi@raspi ~/bleterm $
The following is a sample session showing how to get into AT command mode. Note: You will not see +++ and ATI as you type because the BLE UART does not echo back the characters. They are shown below for clarity.
When the BLE UART is in AT command mode, the cli.ino sketch does not receive the characters you type. The BLE UART intercepts the incoming characters. Be sure to send +++ a second time to make the BLE UART revert to UART data mode.
pi@raspi ~/bleterm $ node bleterm.js Connected to Adafruit Bluefruit LE +++ OK ATI BLEFRIEND32 nRF51822 QFACA10 365B980BEBABC010 0.6.2 0.6.2 Apr 30 2015 S110 8.0.0, 0.2 OK +++ OK <CTRL-D> pi@raspi ~/bleterm $
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