About this app

This app communicates between Android and a micro:bit device. You can transmit and receive text in 'notification' or 'indication' mode. The UART communication also has to be implemented at the micro:bit device (Block, Javascript, MBED).

Options:
- Indication: Default micro:bit mode (otherwise notification mode)
- LF: Linefeed added
- CR: Carriage return added

Requirements:
- Min. Android 5
- Bluetooth Low Energy (BLE)
- Paired devices
- micro:bit programm (developed by yourself)

V 2.1: Copy to Clipboard (Option Menu)
V 2.2: Clear List (Option Menu), No Log Option
V 2.5: Hex Mode

MBED example:

#include "MicroBit.h"
#include "MicroBitUARTService.h"
#include "BMP180.h"

MicroBit uBit;
MicroBitUARTService *uart;
BMP180 bmp180(P0_30, P0_0);
char buffer[80];
float pressure,temperature;

int connected = 0;

void onConnected(MicroBitEvent e)
{
uBit.display.scroll("C");
connected = 1;
}

void onDisconnected(MicroBitEvent e)
{
uBit.display.scroll("D");
connected = 0;
}


void onButtonA(MicroBitEvent e)
{
uBit.display.scroll(buffer);
}

void onButtonB(MicroBitEvent e)
{
uBit.display.scroll("SK");
}

/*
IMPORTANT !!!
Oherwise you will run out of memory !

Recommend disabling the DFU and Event services in MicroBitConfig.h since they are not needed here:
microbit->microbit-dal->inc->core->MicroBitConfig.h

#define MICROBIT_BLE_DFU_SERVICE 0
#define MICROBIT_BLE_EVENT_SERVICE 0
#define MICROBIT_SD_GATT_TABLE_SIZE 0x500
*/

int main()
{
bmp180.Initialize(64, BMP180_OSS_ULTRA_LOW_POWER);
pressure = -1;
temperature = -1;
if (bmp180.ReadData(&temperature,&pressure))
sprintf(buffer, "%.2f C %4.0f hPa", temperature, pressure);
else
sprintf(buffer,"NOK");

// Initialise the micro:bit runtime.
uBit.init();

uBit.messageBus.listen(MICROBIT_ID_BLE, MICROBIT_BLE_EVT_CONNECTED, onConnected);
uBit.messageBus.listen(MICROBIT_ID_BLE, MICROBIT_BLE_EVT_DISCONNECTED, onDisconnected);
uBit.messageBus.listen(MICROBIT_ID_BUTTON_A, MICROBIT_BUTTON_EVT_CLICK, onButtonA);
uBit.messageBus.listen(MICROBIT_ID_BUTTON_B, MICROBIT_BUTTON_EVT_CLICK, onButtonB);

uart = new MicroBitUARTService(*uBit.ble, 32, 32);
uBit.display.scroll(":)");

while(1)
{
pressure = -1;
temperature = -1;
if (bmp180.ReadData(&temperature,&pressure))
sprintf(buffer, "%.2f C %4.0f hPa", temperature, pressure);
else
sprintf(buffer,"NOK");

if (!connected) {
uBit.sleep(500);
}
else
{
uart->send(buffer);
uBit.sleep(1000);
}

}

release_fiber();
}

New features

HEX mode

App Permissions

Allows applications to connect to paired bluetooth devices.
Allows applications to discover and pair bluetooth devices.
Allows an app to access precise location.
Allows an app to access approximate location.