File content as of revision 3:2ea547dab8a8:

/*

*/

#include "mbed.h"
#include "nrf51_rtc.h"
#include "AS3935_ext.h"

#define NEED_CONSOLE_OUTPUT 1 // Set this if you need debug messages on the console; 
#define NEED_BLE_CONSOLE 1

#if NEED_CONSOLE_OUTPUT
Serial  pc(USBTX, USBRX);
#define DEBUG(...) { pc.printf(__VA_ARGS__); }
#else
#define DEBUG(...) /* nothing */
#endif /* #if NEED_CONSOLE_OUTPUT */

#if NEED_BLE_CONSOLE
#include "BLE.h"
#include "UARTService.h"
#define BLEC(...) { char __blecstr[32]; sprintf(__blecstr,__VA_ARGS__); if (uart) uart->write(__blecstr, strlen(__blecstr)); }
#else
#define BLEC(...) /* nothing */
#endif /* #if NEED_BLE_CONSOLE */

#if NEED_BLE_CONSOLE
// Prepare BLE device
const uint8_t DEVICE_NAME[] = "BLE Ligttning Sensor";
#endif // #if NEED_BLE_CONSOLE


// Prepare LED device
DigitalOut led1(LED1);
DigitalOut led2(LED2);

AS3935_ext Lightning(I2C_SDA0,I2C_SCL0,0x00,P0_23);
InterruptIn IntLightning(P0_23); //IRQ AS3935

// used for the example only, not required for rtc use
DigitalIn  button1(BUTTON1);  // used to trigger the time report
InterruptIn button1Press(BUTTON1);

// event record buffer struct
const int s_evrecord=10;
struct t_evrecord {
    public:
        int event;
        time_t time;
        int distance;
        
        t_evrecord() {
            event = 0;
            time = 0;
            distance = 0;
        }
} evrecord[s_evrecord];

time_t example_time() {
    // set an intial time
    //  ...not really necessary for this example, but it beats setting it to 0 or some non-obvious large integer (# of seconds since 1/1/1970)
    time_t rawtime=0;

    struct tm * init_timeinfo;

    // initialize time
    init_timeinfo = localtime(&rawtime); // note:  must initialize the struct with this before trying to set components
                                         // ...else code goes into the weeds!!
    init_timeinfo->tm_sec = 0;
    init_timeinfo->tm_min = 0;
    init_timeinfo->tm_hour = 0;
    init_timeinfo->tm_mon = 0;
    init_timeinfo->tm_mday = 1;
    init_timeinfo->tm_year = 70;        

    char date[24];
    strftime(date,sizeof(date),"%H:%M:%S on %m/%d/%G",init_timeinfo);
    DEBUG("Initial time set is %s.\r\n",date);
    
    // compute the proper value for time in time_t type
    rawtime = mktime(init_timeinfo);
    return rawtime;
}

void print_time() {
    // called when a button is pushed, this prints the current time to the USB-connected console
    
    time_t rawtime=rtc.time();
    
    // massage the time into a human-friendly format for printing
    struct tm * timeinfo;
    timeinfo = localtime(&rawtime);
    char date[24];
    strftime(date,sizeof(date),"%H:%M:%S on %m/%d/%G",timeinfo);
    DEBUG("The current time is %s.(%d)\r\n",date,rawtime);
}

void periodic_update() {
    // for use as interrupt routine, to insure that RTC is updated periodically
    //  ...if rtc is not read before the underlying counter rolls over (typically 512 seconds), the RTC value will be wrong
    //  ...ideally this would be done as part of the nrf51_rtc method, but I couldn't get it to behave (see nrf51_rtc.cpp for details)
    rtc.time();
    Lightning.lightningDistanceKm();
    led1 = !led1;

    // print_time();
}

#if NEED_BLE_CONSOLE
BLEDevice  ble;
UARTService *uart;
static Gap::ConnectionParams_t connectionParams;
int buff_flash_flag;

void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)    // Mod
{
    DEBUG("Disconnected handle %u!\n\r", handle);
    DEBUG("Restarting the advertising process\n\r");
    led2 = 0;
    ble.gap().startAdvertising();
    
    
}

void onConnectionCallback(const Gap::ConnectionCallbackParams_t *params)
{
    DEBUG("connected. Got handle %u\r\n", params->handle);

    connectionParams.slaveLatency = 1;
    led2 = 1;
    if (ble.gap().updateConnectionParams(params->handle, &connectionParams) != BLE_ERROR_NONE) {
        DEBUG("failed to update connection paramter\r\n");
    }
    buff_flash_flag = 1;

}

void onDataWritten(const GattWriteCallbackParams *params)
{
    uint8_t buff[21];
    if ((uart != NULL) && (params->handle == uart->getTXCharacteristicHandle())) {
        uint16_t bytesRead = params->len;
        DEBUG("received %u bytes\n\r", bytesRead);
        strncpy((char*)buff,(char*)params->data,bytesRead);
        // ble.updateCharacteristicValue(uart->getRXCharacteristicHandle(), params->data, bytesRead);
        ble.updateCharacteristicValue(uart->getRXCharacteristicHandle(), buff, bytesRead);
    }
}

#endif // if NEED_BLE_CONSOLE

void DetectLightning()
{
    char OriginInt;
    time_t rawtime=rtc.time();
    struct tm * timeinfo;
    timeinfo = localtime(&rawtime);
    char date[24],sdate[9];
    int distance;
    
    strftime(date,sizeof(date),"%H:%M:%S on %m/%d/%G",timeinfo);
    strftime(sdate,sizeof(sdate),"%H%M%S",timeinfo);

    wait_ms(2); //on attend 2ms préconisation constructeur
    OriginInt = Lightning.interruptSource();
    distance = Lightning.lightningDistanceKm();

    if (OriginInt == 1) {
        led2 = !led2; 
        DEBUG("%24s : Noise level too high. %d km\r\n",date,distance);
        }
    if (OriginInt == 4) {
        led2 = !led2;
        DEBUG("%24s : Disturber detected. %d km\r\n",date,distance);
        }
    if (OriginInt == 8) {
        led2 = !led2; 
        DEBUG("%24s : Lightning interrupt %d km\r\n",date,distance);
        }
}


int main(void)
{
#if NEED_BLE_CONSOLE
    ble.init();
    ble.gap().onDisconnection(disconnectionCallback);
    ble.gap().onConnection(onConnectionCallback);
    ble.gattServer().onDataWritten(onDataWritten);
    ble.gap().getPreferredConnectionParams(&connectionParams);
    
    uart = new UARTService(ble);
    buff_flash_flag = 0;

#endif // if NEED_BLE_CONSOLE


    led1=0;
    led2=0;
    int hz=0;

    //initialisations
    wait(1);
    DEBUG("reset\r\n");
    Lightning.reset();
    DEBUG("setTuneCap as 5\r\n");
    Lightning.setTuneCap(5); // Tuning Parameter
    DEBUG("powerup\r\n");
    Lightning.powerUp();
    
    DEBUG("set Indoor Mode as 0x0d\r\n");
    Lightning.registerWrite(AS3935_AFE_GB,0x0d);
    
    DEBUG("Auto Calibration Start\r\n");
    float minerr = 100;
    int fincap = 7;
    for(int i=0;i<16;i++) {
        Lightning.setTuneCap(i); // Tuning Parameter
        hz = Lightning.MeasureLCOFreq();
        float err = (hz-500000.)/500000.*100.;
        DEBUG("%d : hz=%10d Hz (%5.2f%%)\r\n",i,hz,err);
        if ( abs(err) < minerr ) {
            minerr = abs(err);
            fincap = i;
        }
    }
    Lightning.setTuneCap(fincap); // Tuning Parameter
    wait_ms(100);
    hz = Lightning.MeasureLCOFreq();
    float err = (hz-500000.)/500000.*100.;
    DEBUG("Final %d : hz=%10d Hz (%5.2f%%)\r\n",fincap,hz,err);
    BLEC("%1x:%10dHz:%5.2f:final\n",fincap,hz,err);
    
    DEBUG("Auto Calibration finished\r\n");
    
    // user selectable, any time < 512 seconds is OK
    #define PERIODIC_UPDATE 1
    Ticker rtc_ticker;
    rtc_ticker.attach(&periodic_update, PERIODIC_UPDATE);
    
    time_t initial_time = example_time();
    rtc.set_time(initial_time);
    
    button1Press.fall(&print_time);  // when button1 is pressed, this calls rtc.time() and prints it
    
    IntLightning.rise(&DetectLightning);

#if NEED_BLE_CONSOLE
    /* setup advertising */
    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
    ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
                                     DEVICE_NAME, sizeof(DEVICE_NAME) - 1);
    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
                                     (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));

    ble.gap().setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
    ble.gap().startAdvertising();
#endif // #if NEED_BLE_CONSOLE

    while (true) {
        if ( buff_flash_flag != 0) {
            wait_ms(4000);
            BLEC("test1\n");
            wait_ms(300);
            time_t rawtime=rtc.time();
            BLEC("%4x:current time\n",rawtime);
    
            for(int i=0;i<s_evrecord;i++) {
                BLEC("%1d:%4x:%1x:%2x\n",i,evrecord[i].time,evrecord[i].event,evrecord[i].distance);
                wait_ms(300);
            }
            BLEC("finished\n");

            buff_flash_flag = 0;
            
        } else {
            BLEC("pong\n");
            wait(5);
        }
    }
}