AS3935 Lightning sensor library
Fork of AS3935 by
include the mbed library with this snippet
#include "mbed.h" #include "AS3935.h" // frdm-kl25z sd card connections for spi1 // ------------------------------------------------ // Header -- kl25z -- SD/MMC // J2-20 -- PTE1 -- MOSI // J9-13 -- PTE4 -- CS // J2-14 -- GND -- Vss (GND) // J9-9 -- PTE2 -- SCK // J9-11 -- PTE3 -- MISO AS3935 ld(PTE1, PTE3, PTE2, PTE4, "ld", 100000); // MOSI, MISO, SCK, CS, SPI bus freq (hz) InterruptIn IntLightning(PTA12); //IRQ AS3935 DigitalOut led1(LED_RED); Serial pc(USBTX, USBRX); void DetectLightning() { char OriginInt; wait_ms(2); OriginInt = ld.interruptSource(); if (OriginInt == 1) { // pc.printf(" Noise level too high\r\n"); } if (OriginInt == 4) { // pc.printf(" Disturber\r\n"); } if (OriginInt == 8) { // detection // pc.printf(" Lightning detection\r\n"); pc.printf(" Lightning detection, distance=%dkm\r\n", ld.lightningDistanceKm()); ld.clearStats(); } } int main() { pc.baud(9600); pc.printf("\r\nstart lightning detector\r\n"); //initialisations ld.reset(); ld.setTuneCap(5); // 500kHz ld.powerUp(); ld.setIndoors(); ld.setMinimumLightnings(1); //ld.setSpikeRejection(2); ld.setNoiseFloor(2); ld.disableDisturbers(); //ld.enableDisturbers(); ld.setWatchdogThreshold(2); wait_ms(10); IntLightning.rise(&DetectLightning); int MinBlysk = ld.getMinimumLightnings(); int Noise = ld.getNoiseFloor(); int TuneCap = ld.getTuneCap(); int SpikeRej = ld.getSpikeRejection(); int WatchDog = ld.getWatchdogThreshold(); pc.printf(" Min wylad: %i", MinBlysk); pc.printf("\r\n"); pc.printf(" Noise: %i", Noise); pc.printf("\r\n"); pc.printf(" Tune CAP: %i", TuneCap); pc.printf("\r\n"); pc.printf(" Spike rej: %i", SpikeRej); pc.printf("\r\n"); pc.printf(" Watchdog: %i", WatchDog); pc.printf("\r\n"); while(1) { led1 = ! led1; wait(0.2); } }
AS3935.hpp
- Committer:
- casper
- Date:
- 2014-04-05
- Revision:
- 0:346c723cac97
File content as of revision 0:346c723cac97:
/* AS3935.h - AS3935 Franklin Lightning Sensor™ IC by AMS library Copyright (c) 2012 Raivis Rengelis (raivis [at] rrkb.lv). All rights reserved. Portée sur MBED par Valentin This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef _AS3935_HPP #define _AS3935_HPP #include "mbed.h" //#include "i2c.hpp" // register access macros - register address, bitmask #define AS3935_AFE_GB 0x00, 0x3E #define AS3935_PWD 0x00, 0x01 #define AS3935_NF_LEV 0x01, 0x70 #define AS3935_WDTH 0x01, 0x0F #define AS3935_CL_STAT 0x02, 0x40 #define AS3935_MIN_NUM_LIGH 0x02, 0x30 #define AS3935_SREJ 0x02, 0x0F #define AS3935_LCO_FDIV 0x03, 0xC0 #define AS3935_MASK_DIST 0x03, 0x20 #define AS3935_INT 0x03, 0x0F #define AS3935_DISTANCE 0x07, 0x3F #define AS3935_DISP_LCO 0x08, 0x80 #define AS3935_DISP_SRCO 0x08, 0x40 #define AS3935_DISP_TRCO 0x08, 0x20 #define AS3935_TUN_CAP 0x08, 0x0F // other constants #define AS3935_AFE_INDOOR 0x12 #define AS3935_AFE_OUTDOOR 0x0E class AS3935 { public: /* * Initializes I2C interface and IRQ pin */ AS3935(PinName sda, PinName scl, int adresse); //destruction //~AS3935(); //write to specified register specified data using specified bitmask, //the rest of the register remains intact void registerWrite(char reg, char mask, char data); //read specified register using specified bitmask and return value aligned //to lsb, i.e. if value to be read is in a middle of register, function //reads register and then aligns lsb of value to lsb of byte char registerRead(char reg, char mask); //reset all the registers on chip to default values void reset(); //put chip into power down mode void powerDown(); //bring chip out of power down mode and perform RCO calibration void powerUp(); //return interrupt source, bitmask, 0b0001 - noise, 0b0100 - disturber, //0b1000 - lightning int interruptSource(); //disable indication of disturbers void disableDisturbers(); //enable indication of distrubers void enableDisturbers(); //return number of lightnings that need to be detected in 17 minute period //before interrupt is issued int getMinimumLightnings(); //set number of lightnings that need to be detected in 17 minute period //before interrupt is issued int setMinimumLightnings(int minlightning); //return distance to lightning in kilometers, 1 means storm is overhead, //63 means it is too far to reliably calculate distance int lightningDistanceKm(); // load gain preset to operate indoors void setIndoors(); //load gain preset to operate outdoors void setOutdoors(); //return noise floor setting - refer to datasheet for meaning and range int getNoiseFloor(); //set noise floor setting int setNoiseFloor(int noisefloor); //return spike rejection value - refer to datasheet for meaning and range int getSpikeRejection(); //set spike rejection value int setSpikeRejection(int srej); //return watchdog threshold value - refer to datasheet for meaning and range int getWatchdogThreshold(); //set watchdog threshold value int setWatchdogThreshold(int wdth); //return tune Capacity value int getTuneCap(); //set tune Capacity value int setTuneCap(int cap); //clear internal accumulated lightning statistics void clearStats(); private: I2C i2c; //DigitalOut _irq; int _adress; char _rawRegisterRead(char reg); char _ffsz(char mask); }; /* !_AS3935_HPP_ */ #endif