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); } }
Diff: AS3935.cpp
- Revision:
- 12:ac6ba62a31c6
- Parent:
- 11:ee2e7a573227
- Child:
- 15:afbf7ba667e7
--- a/AS3935.cpp Wed Jun 24 16:36:47 2015 +0000 +++ b/AS3935.cpp Wed Jun 24 18:18:37 2015 +0000 @@ -222,7 +222,7 @@ intrIn.rise(intrPulseCntr); _SPITransfer2(0x3D, 0x96); // send command to calibrate the internal RC oscillators - _SPITransfer2(8, 0x20); // put TRCO on the IRQ line for measurement + registerWrite(AS3935_DISP_TRCO, 1); // put TRCO on the IRQ line for measurement wait_ms(20); // wait for the chip to output the frequency, ususally ~2 ms pulseTimer.reset(); @@ -234,13 +234,14 @@ { timeNow = pulseTimer.read_ms(); } - _SPITransfer2(8, 0); // stop the output of the frequncy on IRQ line + + registerWrite(AS3935_DISP_TRCO, 0); // stop the output of the frequncy on IRQ line measFreq = sgIntrPulseCount << 1; // calculate the measure frequency based upon period of capture and freq scaler printf("timer RCO: %ld Hz\n\r", measFreq); - trco=registerRead(0x3A, 0x80); // Read out Calibration of TRCO done - srco=registerRead(0x3B, 0x80); // Readout Calibration of SRCO done + trco=registerRead(0x3A, 0x80); // Read out Calibration of TRCO done + srco=registerRead(0x3B, 0x80); // Readout Calibration of SRCO done if(trco != 0x00 && srco != 0x00) { rc = 1; @@ -285,6 +286,7 @@ { timeNow = pulseTimer.read_ms(); } + _SPITransfer2(8, 0x00); // stop the output of the frequncy on IRQ line measFreq = sgIntrPulseCount << 7; // calulate the measure frequency based upon period of capture and freq scaler