Rob Dobson / Mbed 2 deprecated BLE_ScoringDevice

Using the MBED BLE library and Nordic Puck library this is a simple scoring application using Bluetooth LE. It monitors three analog inputs and triggers on reception of a pulse on any one recording data for a short period on all three. This is then published via BLE characteristics. It's a demonstrator for a new UI dev toolkit that is under development.

Dependencies:   Puck mbed

Fork of Example_Puck_BLE by Nordic Semiconductor

main.cpp

Committer:
Bobty
Date:
2014-08-20
Revision:
1:1a59b4810261
Parent:
0:8d7583961274
Child:
2:e400fd4f501b

File content as of revision 1:1a59b4810261:

/**
Scoring Device - for generic game scoring
Using Puck BLE MBED library from Nordic
Copyright (C) Nodule.io 2014

 */

#define LOG_LEVEL_INFO
#include "Puck.h"

Puck* puck = &Puck::getPuck();

// Gatt characteristic and service UUIDs
const UUID SCORING_GATT_SERVICE =           stringToUUID("nodule.scoring  ");
const UUID SAMPLES_GATT_CHARACTERISTIC =    stringToUUID("nodule.samples  ");

const int SAMPLES_LEN = 20;
uint8_t SAMPLES_BUF[SAMPLES_LEN];
const int SAMPLE_THRESHOLD = 800;

// Setup ADC
AnalogIn ain(P0_1);

// Timer to avoid repeat sampling
Timer antiRepeatTimer;
int lastSampleTime = 0;
const int MIN_MS_BETWEEN_SAMPLES = 2000;

int main(void) 
{
    
    // Set baud rate
    logger.baud(115200);
    
    // Add the Gatt characteristic for samples
    puck->addCharacteristic(
            SCORING_GATT_SERVICE,
            SAMPLES_GATT_CHARACTERISTIC,
            SAMPLES_LEN,
            GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);

    // Initialize the puck
    puck->init(0xCD01);
    
    // Start timer
    antiRepeatTimer.start();

    // Wait for something to be found
    while(puck->drive())
    {
        int curTimerVal = antiRepeatTimer.read_ms();
        if ((lastSampleTime < curTimerVal) || (curTimerVal - lastSampleTime > MIN_MS_BETWEEN_SAMPLES))
        {
            // Check threshold
            unsigned short val = ain.read_u16();
            if(val > SAMPLE_THRESHOLD)
            {
                for (int i = 0; i < SAMPLES_LEN; i++) 
                {
                    SAMPLES_BUF[i] = ain.read_u16() - 760;
                    wait_ms(10);
                }
                    
                // Set the value of the characteristic
                puck->updateCharacteristicValue(SAMPLES_GATT_CHARACTERISTIC, SAMPLES_BUF, SAMPLES_LEN);
                
                // Display readings
                for (int j = 0; j < SAMPLES_LEN; j++)
                {
                    LOG_INFO("%d ", SAMPLES_BUF[j]);
                }
                LOG_INFO("\n");
                
                // Set timer to disallow repeated readings
                lastSampleTime = curTimerVal;
            }
        }                
    }
}