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MiP-with-UART.md

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Using MiP from UART

MiP contains a UART serial port which can receive the same commands as the Bluetooth Low Energy receiver. After you connect to the TX & RX pins on the PCB you need to send the byte 0xFF, once this is sent you can send the commands as per the BLE documentation.

Connecting to the Serial Port

Sparkfun have done a fantastic writeup on how to connect to the serial port on MiP (and adding their proto board). This is the recommended guide for opening up MiP.

To connect to MiP you need to use these settings:

  • Baud Rate: 115200
  • Flow Control: Off
  • Data Bits: 8
  • Parity Bit: None
  • Stop Bit: 1

Python Example

Thanks to rjelbert for the sample code.

import serial
import time
ser = serial.Serial('/dev/ttyAMA0', 115200)
time.sleep(0.1)

init MIP in serial mode

ser.write(b'\xFF')

set front LED to flashing GREEN

time.sleep(0.1)
ser.write(b'\x89')
ser.write(b'\x00')
ser.write(b'\xFF')
ser.write(b'\x00')
ser.write(b'\x01')
ser.write(b'\x10')
time.sleep(10)

now send MIP to sleep

ser.write(b'\xFA')
ser.flush()

Arduino Example

Thanks to timab25 here is some sample code for Arduino Mega that uses Serial1 to init, make chest blink green, then sleep.

Note: The delay after sending the init is needed.


//Setup Serial1 for correct baud rate

Serial1.begin(115200);

//Send init command
Serial1.write(0xFF);
delay(30); // delay in between reads for stability

//Send command to blink chest green
Serial1.write(0x89);
Serial1.write(0x00);
Serial1.write(0xFF);
Serial1.write(0x00);
Serial1.write(0x01);
Serial1.write(0x10);
delay(30000);

//Send command to sleep
Serial1.write(0xFA);

Other Languages

Please send us a pull request with any other language examples you have.